PE modified polyethylene wax and paraffin

A small amount of low density polyethylene (LDPE) was added to the molten wax to form a homogeneous mixture of the polyethylene dissolved, and cooled to obtain a modified PE wax, paraffin wax which is very classic processing methods. Adding a small amount of polyethylene wax crystallization changed, so that the melting point paraffin has heat stabilizer for panel  been greatly improved, improved from 50 degrees to 80-90 degrees, LDPE also has very good toughness paraffin, wax coating containing the PE not easy to crack. Because of these advantages, several decades ago, PE is widely used in the modified paraffin wax coated paper, cardboard, waterproof packaging for food, when very expensive PE film can not be applied to these areas.
PE modified so that the physical properties of paraffin wax has greatly improved, but even the plastic coating applications, it is fundamentally different and polyethylene wax, not  stearic acid paraffin polyethylene + = polyethylene wax.
PE modified paraffin wax can change a small molecular weight (300-400) nature, at higher temperatures, large-volatile paraffin. Bake 180 degrees for 20 minutes, PE modified paraffin thermal weight loss of about 10 percent, a variety of polyethylene wax TGA basically about 0.5%. Modified PE wax used in powder coatings, baking smoke very serious.
PVC external lubricant wax can do, but there are many disadvantages: Since paraffin and small molecular weight PVC resin and incompatible, paraffin easily precipitate from PVC products, wax  Chlorinated paraffin tends to reduce the strength of PVC products. PE modified paraffin wax can not change these properties, but it improves the viscosity increase than pure wax such external lubrication has improved stability than pure wax.
For masterbatches, PE modified relatively pure paraffin wax, the viscosity increased, a shearing force increases, the relative genuine purpose polyethylene wax, PE wax or a modification of the pigment is difficult to effect uniform dispersion.

Zinc stearate coatings more extensive use

Zinc stearate is mainly used in paint wood primer , from filling role in enhancing sexual polished . Transparency, transparency affect paint small, especially for transparent primer. With the direct method zinc stearate manufacturers gradually increased, so that under the pressure of competition in the domestic zinc stearate coatings performance has been dramatically improved. In addition to zinc stearate coating focus sanding and transparent , but also some other factors such as overall  Stabilizers for pipe performance oil absorption, thickening , particle size, dispersion and so on Wood have also been affected. Zinc stearate in wood primer There are several major technical indicators affect the performance of its paint : 1 , primer sanding of the wood , polished performance is a very important indicator in the paint , the usual method is to use the same test the coating formulations , while polished plate spray test in the same time , there is no fixed standard . 2 , transparency transparent primer , the transparency level of direct impact on the appearance of wood . Therefore, the water produced with zinc stearate is not transparent in the wood , mainly because of too many impurities . The direct method in the production of zinc stearate is able to meet the requirements of purity , but also a very high process requirements , a significant impact of different production processes for transparency , small differences may lead to huge differences in process on transparency .
3 , thickening the production of coatings manufacturers of zinc stearate thickening is not acceptable because the zinc stearate coating added to finished products , its viscosity determines factory index had settled down , even if the error is also in ± 500mP · s, so the test zinc stearate thickening method is generally used to  one pack stabilizer test rotary viscometer , viscosity and viscosity deviation good if just a few hours after the dispersion is greater than 500mP · s, regarded as thickening 4. suction oil absorption and thickening personally do not think the same concept , oil is in the same proportion of large amounts of added conditions to make the finished product viscosity, while the viscosity does not exceed a period of time to place the error value ± 500mP · s. Generally PU coating for oil absorption is not much demand because production will not have much impact , paint manufacturers have high requirements on oil absorption , which may be solvent paint manufacturers to add some more , and want to reduce the evaporation of the solvent , must find some high oil absorption material added to it , and oil absorption of zinc stearate relative to other additives are additives of high oil absorption .
5, the particle size of the indicators show that the particle size of the zinc stearate , are generally used to measure the degree of fineness . The easiest test is usually the result fineness fastest scraper fineness, generally adding a certain percentage of zinc in the alkyd resin dispersion , then add a little solvent viscosity good tune , then fineness meter testing, such test results are slightly larger than the actual fineness so, because the resin powder is wrapped in possession of a certain thickness , but as long as the standard set can be comparable and reproducible test method to measure this fineness is exceeded 6 , dispersed in paint Chlorinated paraffin  production process , there are many manufacturers mentioned dispersion problems. Under normal circumstances , zinc stearate dispersed in the paint is not a problem , but in the production process of zinc stearate , some indicators will also cause the dispersion of certain effects, such as zinc stearate acid value is too high , semi temperature is too high, there will be zinc in the coating dispersion of workers bad press pack too serious , but if the water is too high in zinc also appear crystallization problems , is considered dispersion bad .

Effect on the performance of PVC heat stabilizers how much you know

A series of complex organic PVC heat stabilizers have begun to enter the market and gradually replaced the traditional heavy metal stabilizers.
PVC heat stabilizers are indispensable in the process additives , awareness of their concerns with human health and  iron oxide black the surrounding environment is gradually increased, the world has promulgated a series of measures to limit the use of heavy metal heat stabilizers .
Outside the industry generally believe that awareness of PVC heat stabilizers environmental protection has become an irreversible trend, in the process of environmental protection PVC heat stabilizer , research and development , non-toxic , non-polluting , complex , and efficient heat stabilizers have been more widely application .
PVC resin having a self- HCL released catalytic or structural instability polyolefin produced PVC resin capable of addition reflection to prevent or reduce the decomposition of PVC resin . General characteristics of the formulations selected thermal stabilizer , features and requirements of the article to be considered. Here are some characteristics of people stabilizer :
1 lead salt stabilizer is mainly used in hard articles . Lead salt stabilizer has good heat stabilizers , excellent electrical properties , low cost and so on. However, its toxicity, easily contaminated products , can only produce opaque products. In recent years, large  iron oxide yellow numbers of composite stabilizer , stabilizer dangerous single component has been replaced . Features composite stabilizer is a dedicated and strong, little pollution , the advantages of simple ingredients and processing enterprises . But because no uniform standard , so the difference between the various composite stabilizer great .
2 barium cadmium -based stabilizers is a better performance heat stabilizers . PVC plastic sheeting used in wider . Usually barium cadmium and zinc and organic phosphite antioxidants and use .
3 . Calcium zinc stabilizers can be used as non-toxic stabilizers used in food packaging and medical devices, pharmaceutical packaging , but its stability is relatively low education , calcium -based stabilizers large amount of poor transparency , easy to bloom . Calcium zinc stabilizers usually used polyols and antioxidants to improve its performance, the PVC heat stabilizer  country has recently been Ca-Zn composite stabilizer for rigid pipes appear.
4 good thermal properties of the organic tin-based stabilizers , are preferred species for the transparent rigid PVC products , particularly octyl tin packaging products become almost indispensable toxic stabilizers .

Look plasticizer industry how to deal with future market

The news is no doubt consumers "Gospel ." With the enhancement of environmental awareness around the world and focus on aspects of chemical hazards to human health , have introduced on phthalates , the most commonly used types of phosphate plasticizers restrictions regulations and technical standards . Our country is in Asia plasticizer production, consumer, plasticizer production capacity of about 300 million tons, production of about 1.5 million tons . Because many companies related to international trade regulations insufficient attention on the face of the titanium dioxide anatase  endless variety of new regulations by surprise, in children's toys , food packaging , consumer goods and medical plastic products such as foreign trade industry has been a huge hit. Despite a greater impact , but the introduction of various international industry regulations is to ensure that the risk of harmful plasticizers are reasonable control and gradually replaced. Although the new international regulations to establish a high technical barriers, but once beyond, domestic enterprises from both technical and market while promoting industrial upgrading plasticizer .
President of the China Plastics Processing Industry Association, Liao pointed out that China's plastics industry is still huge room for development, but we must increase investment in technological innovation , attention to the introduction and training of technical personnel , to strengthen cooperation with universities and research institutes , tracking and abroad the latest trends in technology development , there are efforts to develop proprietary products and technologies with independent intellectual property rights , improve the overall level of technology and independent innovation capability . The role of plasticizer to provide mankind with high quality plastic products is indispensable , but it brings security issues , environmental hazards , pose a new challenge to humanity . R & D use of safe, environmentally friendly plasticizer has become an urgent  pvc additive task development of the industry . Accelerate the elimination of toxic plasticizers and promote the development of new non-toxic plasticizer has become an inevitable trend. Therefore , domestic enterprises must constantly monitor plasticizer regulations related fields exporter latest updates , progress and adjustments and changes , early good response. Second, to increase the new " non-toxic type", environmentally friendly plasticizer research and development efforts , the right to judge the market demand, timely adjustment of the production structure . It is reported that China plasticizer industry after decades of development, the industrial base has a considerable scale . Faced with new international regulations change constantly adjust product structure , more carbon black powder  advanced means of detection , evaluation method is more reasonable , a number of manufacturers have begun to catalyze a great effort under the new study , the separation process , vigorously develop and promote non-toxic , environmentally friendly and biodegradable growth plasticizers, the more cost-effective , more reliable security , a new generation of environmentally friendly plasticizer products to market.

All kinds of heat stabilizer heat discoloration Comment

Thermal stabilizers should preferably absorb both HCL, to eliminate the active site , the addition of a conjugated polyene chain , carbenium salt damage , etc. to prevent auto-oxidation , which does not produce the product of the catalytic degradation of PVC . The actual heat stabilizers have different functions due to exhibit different thermal stability characteristics , can be divided into early -type , long-term , intermediate -and versatile four . A ) cadmium , zinc soap is typical  Processing aid of early -type heat stabilizers , can quickly absorb HCL, and effectively substituted with carboxylate PVC unstable chlorine atom in the catalytic chain Cd, Zn , thereby effectively suppressing early degradation and coloring , but because of the consumption of fast and transformation products CdC12, ZnC12, but also off the HCL efficient catalyst PVC , PVC and thus lead to Chrolinated polyethylene  the degradation of the material suddenly vicious black , so poor long-term thermal stability. 2 ) barium, calcium soaps are typically long-term thermal stabilizers , absorption HCL function only and therefore can not inhibit coloring PVC , but the conversion product BaC12, CaC12 do not have catalytic activity , does not cause a sudden black PVC , long-term heat stability better. 3 ) fatty acids, organic tin are intermediate , both absorption HCL, can effectively replace with carboxylate unstable chlorine atoms PVC chain, and transformation products do not have catalytic activity.
 4 ) mercaptan organotin it Azodicarbonamide  has versatile features , while a variety of mechanisms can stabilize PVC, transformation products do not have catalytic activity , and therefore both excellent initial and long-term thermal stability effect.

plastic lubricant some differences

Lubricant is a broad concept. According to their different functions, the lubricant for the following three categories: (1) to reduce the friction between the particles to improve the powder flowability of the materials, also known as glidants glidants); (2) to prevent the fluorescent brightener  adhesion of raw materials to punch surface of the material, also known as anti-adhesion agent antiadherents); (3) to reduce the particle or tablet) with the friction between the die hole wall accessories, this is the real sense of the lubricant. An ideal lubricant should be both of the flow aid, anti-sticking and lubrication three roles, the lubricant in the currently available yet no such ideal lubricant, are often one or two aspects of a relatively good performance, but other effects are relatively poor.
Type of dispersant
Fatty acids, fatty amides, and esters
Stearamide and used with higher alcohol can improve lubricity and thermal stability, the amount (mass fraction) 0.3% -0.8%, the slip agent may be polyolefin; hexenyl bis hard fat acid amides, also known as ethylene bis-stearamide (EBS), the lubricant is a high melting point, the amount of 0.5% to 2%; glyceryl monostearate (GMS), glyceryl tristearate (HTG); oleic acid 0.2% to 0.5% of the amount; hydrocarbon wax solid, mp 57 ~ 70 ℃, insoluble in water, soluble in an organic solvent, the resin dispersibility, compatibility, heat stability are poor, the dosage is generally 0.5% or less
Paraffin
Although the wax is external lubricant, but straight-chain non-polar hydrocarbon, not wet the metal surface, such as polyvinyl chloride resin that does not prevent adhesion of metal walls, only, and stearic acid, calcium stearate and used, in order to achieve synergy
(Nujol): Freezing Point -15 ¯ -35 ℃, the extrusion and injection molding processing, the poor compatibility with the resin, add the amount is generally 0.3% to 0.5%, too much time, but the processing performance bad Microcrystalline wax: obtained from petroleum refining process, the  PVC profile stabilizer larger molecular weight, and has many isomers, mp 65-90 ℃, lubricity and thermal stability, but poor dispersion, the dosage is generally 0.1% -0.2%, preferably butyl stearate, higher fatty acids, metal soaps with
Metal salts of higher fatty acids, called metal soaps such as barium stearate (BaSt) for a variety of plastics, an amount of about 0.5%; zinc stearate (ZnSt) for polyolefins, ABS, etc., the amount of was 0.3%; calcium stearate (CaSt) suitable for GE Plastics, external lubrication, the amount of 0.2% ¯ 1.5%; Other stearic acid soaps such as cadmium stearate (CdSt), stearic acid Magnesium (MgSt), copper stearate (CuSt) low molecular weight waxes
Based on a variety of low molecular aluminum hydroxide  weight polyethylene wax (homopolymer or copolymer), polypropylene, polystyrene or other polymer modified as raw material, by pyrolysis, oxidation from a range of performance of different oligomers Its main products are: homopolymer, oxidized homopolymer, ethylene - acrylic acid copolymer, ethylene - vinyl acetate copolymer, low molecular weight ionomers five categories. Among the most commonly used polyethylene wax
Commonly used polyethylene wax average relative molecular mass of 1500-4000, the softening point of 102 ℃; Other specifications of polyethylene wax average relative molecular mass of 10,000 to 20,000, a softening point of 106 ℃; oxidized polyethylene wax of long-chain molecules with a certain amount of ester group or a soap, and thus the PVC, PE, PP, ABS and external lubrication more balanced, better, its transparency is good. As dispersing agent and its environment, many practical applications, selection of the appropriate dispersing agent is very important.

some description depolymerization pigment

In the dispersion process, only the surface of the secondary particles is not enough to wet paints, because such a large size, small surface area of ​​the pigment particles forming group can not meet the requirements of paints and maintaining a stable dispersion state of liquid paint .
Must therefore be subjected to  PVC heat stabilizer external mechanical forces (shear forces primarily) deaggregation these large particles, to restore back to the original level at or near the particle size to small particles form a large surface area exposed to the paint and so that all surfaces are exposed by wet paints.
This means the applied mechanical force, the pigment agglomerates and aggregates restored or nearly restored to the original level of particles or depolymerization process called dispersion process called.
Pigment in the paint in the paint manufacturing process depolymerization is the main, the most energy consuming processes. Make pigment depolymerization external mechanical force, usually by grinding and dispersion we normally use equipment, such as a sand mill, ball mill, three-roll machine, high speed disperser and two roll machine generated.
As a dispersion medium in order to create a liquid vehicle for the pigment (filling) material particles penetrate the surface of the conditions necessary to color (fill) material aggregates and agglomerates can be applied to promote its breakdown external mechanical force, the color (fill) depolymerization material particles, it is better to paint the wetting liquid, which requires grinding and dispersion equipment.
Paint the polishing slurry, the pigment particles depolymerization process, not only can be sufficiently liquid so that wet paint color (fill) material particle surface to improve the stability of the millbase, and with a higher level of pigment dispersion, coloring pigments, cover will be a corresponding increase in strength, gloss and other paint film performance is also improved. So the selection of an efficient grinding and  aluminum stearate dispersion device, can greatly improve the dispersion of pigment in the paint level, thereby improving the millbase while reducing the amount of pigment stability, improve the quality of paint and coatings.
3, stabilization:
Depolymerization has been wetted pigment particles distributed to a large number of paints continue to go, so there is enough paint coated on the periphery of pigment particles, and isolated from one another, thereby reducing the attractive force between the pigment particles, to avoid the mutual contact between the pigment particles, such that each has to be gathered and the solution of the pigment particles are moistened sufficiently thick, continuous, non-volatile dispersion of film-forming material is permanently open, the dispersion applied in the absence of under the control of mechanical forces, the pigment particles will not appear again coalesce into large particles in the process, called the stabilization process, to obtain stability of the pigment dispersion, the purpose is production of the final paint.
Thus, the dispersion of pigment in the  paint is wet, and stabilization depolymerization process three major components.
But, in fact, these three processes are not  calcium zinc stabilizer completely separate, but simultaneous and alternating conducted. For dispersing the pigment in the paint dispersion is formed, the relationship between the three: a wet basis, in order to more fully depolymerization wetting, and to achieve steady state of the ultimate goal.
If the pigment is dispersed in the paint well, to reach a relatively stable state, then had been dispersed pigment particles likely will re-close and gathered into large particles, forming what we call a pigment floc flocculation of pigments is distributed among the inverse process.
Floc pigments and aggregates and agglomerates, although the original-sized particles made of large particle coalescence particle group, but the floc and the latter are essentially different, although it still paints the surface of the package cover, paint particles have been filled the gap, the pigment aggregates and agglomerates the surface of the cladding is air and water, the gap is filled by air, but the micro-flocculation state, in the production of coatings as well as its the use of the Department.

alum water principle and its preparation method of aluminum sulfate

Alum is a familiar folk purifying agent , which is a kind of aluminum sulfate and potassium sulfate complex salt . Then it is how to use water purification , and its use What is the principle . But also how to use it produced . We together look.
Alum water principle
Alum can be ionized in water, two metal ions : KAl (SO4) 2 = K + + Al3 + + 2SO4 4 -. And Al3 + is easily hydrolyzed  carbon black powder to form colloidal aluminum hydroxide Al (OH) 3: Al3 + + 3H2O = Al (OH) 3 ( gel ) + 3H +. Aluminum hydroxide colloid strong adsorption capacity , can absorb impurities suspended in the water , and the precipitate formed , the water clarification. Therefore , a better purifying agent is alum .
Aluminum sulfate alum was prepared using 1 , aluminum sulfate is added in an excess of ammonia , to obtain aluminum hydroxide precipitate potassium sulfate and ammonium sulfate solution, a 2 , a solid aluminum hydroxide was filtered , washed with dilute sulfuric acid obtained by adding an appropriate amount of aluminum sulfate , evaporation and  iron oxide yellow crystallization 3 , to the filtrate was added an excess of potassium hydroxide and heated , the ammonia evaporated to give potassium sulfate solution , evaporation and crystallization . Due to the use of the prepared aluminum sulfate alum ( potassium aluminum sulfate ) will affect the body iron, calcium absorption components , leading to osteoporosis , anemia, and even affect the development of nerve cells . Therefore , it is now generally used for drinking water alum . Of course, the same rationale containing aluminum ions chloride, aluminum chloride is not used for drinking water purification.

PAFC first three outs coagulation process

PAFC is aluminum ( aluminum sulfate ) and iron coagulation hydrolysis , and set them on the merits of a new and efficient coagulant It is also the wastewater treatment coagulant. Well, you know ferric chloride coagulation in the first three kind of how it is played . We dibasic lead stearate  take a look at three stages of the coagulation process and the formation of hydraulic conditions alum status .
Condensed phases: the liquid is injected into the raw water coagulation tank with rapid coagulation in a very short period of time the process of forming a fine alum , when the water becomes more turbid , it requires water to produce intense turbulence . Beaker experiment should be fast ( 250-300 rev / min ) was stirred for 10-30S, generally no more than 2min.
Flocculation stages: yes alum  n-butyl stearate grow thicker process, requiring an appropriate degree of turbulence and sufficient residence time (10-15min), to the later observed sinking slowly gathered a large number of alum to form a clear surface layer . Beaker experiment first with 150 rev / min stirring for about 6 minutes, then 60 cycles / minute to about 4 minutes was stirred in suspension .
Settlement stage : it is carried out in the settlement pool floc settlement process , requiring slow water flow , to improve the general efficiency of the use of ramps ( plate ) settling pond , lots of thick alum perianth inclined tube ( plate ) and deposited in the  glyceryl monostearate pool wall barrier end of the upper water to clarify the water , the rest of the small particle size, density alum side down slowly , while continuing to collide knot large cloud -to-late I basically unchanged . Beaker experiments should be 20-30 rev / min slow stirring for 5 minutes, then 10 minutes of static sink , than measured turbidity . PAFC take aluminum ( such as aluminum sulfate , etc. ) , iron coagulant their respective flotation operation advantageous to improve the PAC coagulation performance ; the high turbidity water and low temperature and low turbidity water purification effect is particularly evident not add alkaline additives or other coagulant .

types of plastic flame sense

Plastic inexhaustible extended use category while its volume increases and flammable and easily ignited a fever , brought to mankind unexpected danger and loss . Began as a flame retardant additive major categories beginning in chemical fiber, plastics industry projections . Brominated flame retardants despite heavy smoke , because of environmental problems by  Glycrin monostearate the EU restrictions ; But since retardant properties, and with less impact on product performance is small, quite a long time thereafter remain within the main flame . Tips progress along the international growth of brominated flame retardants new features is a continuous and progressive increase of bromine content (fèn) molecular weight . Most phosphorus flame retardants (dū) is a liquid , mainly used for PU, PVC and other plastics . Small molecule phosphorus flame retardant main problems are volatile , high heat resistance is not high , now is trying to develop a large molecular weight compounds and oligomers , special suitable for casting finished and soft PU foam guessed . Flame retardant and plasticizer , flame retardant and cross-linked multi- phosphorus flame retardant effect acrylic processing  of the growth is another major aspect is the low temperature flame-retardant plasticizer special probation plasticized PVC is mainly used in the finished product , such as domestic cumene produced two phosphate. Flame number which reflects the activity of the crosslinking agent is a phosphorus-containing polyhydric alcohols , not only as a reflection type flame retardant PU , and also with the brominated flame retardant and used epoxy resin , brominated flame retardant can be greatly reduced dosage . Since phosphorus flame retardant but also to the low toxicity of growth , not only to solve their toxic products , but also to consider the toxicity of the combustion product differentiation and waste pollution problem situations , or even appropriate, production, sales , storage and transportation process (dì) toxicity problems. Aluminum hydroxide usually with a silane coupling agent , titanate coupling agent and stearic acid ( salt ) , etc. before disposal , just started this titanium dioxide  country , foreign countries have been further carried out before the new special effect modifier of aluminum hydroxide open up. Solem new technology company with a silane disposal and disposal of organic silicone coated aluminum hydroxide , in the PP, PE is added to 70% volume of 60 processing still very good , and the physical properties and flame retardancy of progress.
Inorganic synergist new varieties. A small amount of aluminum hydroxide flame retardant synergist can fill data function has obvious improvements , such as restraint dripping , improved mechanical properties . And aluminum hydroxide can play a synergistic role in a wide scope of an inorganic flame retardant synergist , mainly metal oxides and zinc borate , phosphorus-based compound ( red phosphorus , phosphate) , a silicon -based compound, a metal nitrate ( copper nitrate , silver nitrate ) , ammonium polyphosphate , etc. .

Some of the main flame retardant plastic description

Flame retardants
Most plastics are flammable . With the plastic in the construction, furniture, transportation, aviation , aerospace , electrical and other aspects of the widely used to improve the flame retardancy of plastics has carbon black powder  become a very urgent issue. Inhibiting polymer flame retardant is a class of flammability additives, they are mostly of the Periodic Table Ⅴ, Ⅶ Ⅲ elements and compounds ; especially phosphorus , bromine , chlorine , antimony and aluminum compounds. Sub- additive flame retardants and reactive types . Flame retardant halogen-containing primarily phosphate and Acrylic processing aid  phosphate, a halogenated hydrocarbon , antimony oxide , and aluminum hydroxide . Advantage is easy to use and adaptable . However, the addition of capacity of 10 % to 30% , often affect the performance of plastics . Reactive flame retardant containing the elements actually monomer, it has little effect on the plastic properties . Common reactive flame retardants , halogenated anhydrides such as for polyesters , for epoxy resins of tetrabromobisphenol A, and phosphorus for polyurethane polyol. Flame , the current amount of second plasticizer. Consuming most varieties of plastic flame retardant polyvinyl chloride, polystyrene, polyurethane foam , unsaturated polyester , ABS resin and polypropylene.
Most plastic is flammable , its  titanium dioxide anatase products, which brought a lot of application security risks. Precisely, flame retardants, flame retardants known as more appropriate , because " flame " contains two meanings flame retardant and smoke suppression , compared with the broader concept of flame retardants . However , long time, people have become accustomed to the concept of use of flame retardants

Analysis of the use of natural red iron oxide

Iron oxide red do you know? Professionals may be more familiar with such items. Today we'll learn a wide range of uses of natural iron oxide red! Look at it together!
Red iron oxide has both natural and  Metal stearate artificial. West said the natural red. A substantially pure iron oxide. Red powder. As production methods and operating conditions, their crystal structure and physical properties are very different, color changes from orange to blue to violet light between. Hiding power and tinting strength are great. There  are excellent light, high temperature performance and resistance to atmospheric effects, resistance to dirty gas, all the alkali resistance. Only in  optical brightener concentrated acid under heating was gradually dissolved.
 Natural red iron oxide has good coloring power, the production of ultra-fine natural red iron oxide pigments, the main chemical ingredient, fine texture, pure color, particle size distribution science, measured by the Chinese Institute of Chemical Industry Metals data indicate that, in similar products , it is non-toxic, high temperature, not with acid, alkali, salt effect, is replaced Hongdan green pigments. Surface to be easily attached to dust, Every time there was rain Xueshuang, more so the film surface scrub as new, soft  lead stearate colors and elegant, do not fade, change color, replace part of red iron oxide. Natural red iron oxide is mainly used for the production of iron red paint industry series primer, paint, mixed paint and high-grade paint colors such species or building components for color, natural red iron oxide can replace the roots of materials and precipitated barium sulfate , talc and other fillers. ...

Iron oxide red pigment

Red iron oxide, may be relatively well-known professionals. But we usually see red items, many of which are red iron oxide as raw material. Then, together we know about.
Iron oxide red pigment:
1, iron oxide red pigment Iron Oxide Red for potassium stearate  coloring plastics, such as thermosets and thermoplastics, and rubber products, coloring, such as automobile inner tubes, aircraft inner tube, bicycle inner tube and so on. 2, iron oxide red pigment Iron Oxide Red for a variety of paint color and protective substances, including water-based interior and exterior paints, powder coatings, etc.; also apply to oil paint, including epoxy, alkyd, amino and other primer and surface paint; also be used for toy paint, decorative paint, furniture paint, electrophoretic lacquers and enamels.
3, iron oxide red pigment in the various types of precast concrete products and building materials as pigments or  PVC impact modifier coloring agents, directly into the application of cement. A variety of indoor and outdoor color concrete surfaces, such as walls, floors, ceilings, pillars, porches, roads, parking lots, stairs, stations, etc.; various architectural ceramics and glass ceramics, such as tiles, floor tiles, roof tiles, panels , terrazzo, mosaic tiles, artificial marble.
4, red iron oxide commonly used in construction, rubber, plastics, paint and other industries, particularly iron oxide red primer with rust function, you can replace the expensive red lead paint, saving non-ferrous metals. High Ground material, for use in precision metal instruments, optical glass polishing. Powder metallurgy high purity is the main base for various magnetic alloy smelting and other senior alloy steels. By the one pack stabilizer  ferrous sulfate or iron oxide yellow, or scraps of iron mixed by high temperature calcination, or directly from the liquid medium is made.
5, red in the building materials industry, mainly for color cement, colored cement tiles, colored cement tiles, imitation glazed tiles, concrete tiles, colored mortar, colored asphalt, terrazzo, mosaic tiles, artificial marble and stucco walls, etc.; in the paints and coatings industry is mainly used to manufacture a variety of paints, coatings, inks. In other industries, such as ceramics, rubber, plastics, leather, pulp used to make arrangements light coloring agent and a filler

PVC heat stabilizers catalysis

PVC heat stabilizers catalyst. Such stabilizers include lead salts , organic acids, metal soaps , organic tin compounds , epoxy compounds , phenol salts and metal thiolate salt. They can react with HCL , inhibition PVC de HCL response.
2 ) replacement of PVC molecules suppress  Metallic stearate unstable allylic chlorine atoms off the PVC. Such as organic tin stabilizer of PVC unstable molecule ligand binding chlorine atoms in the ligand , a chlorine atom with an unstable organotin substitution . 3 ) the addition reaction of a polyene structure , a large conjugated system damage formation and reduce coloration . A salt of an unsaturated acid or ester containing double bonds , and the PVC molecules conjugated diene double bond addition reaction , thereby destroying the conjugated structure, and color.
4 ) to capture free radicals and prevent the oxidation reaction . Such as adding phenolic heat stabilizers can block off the HCL, is due to give phenol H atom radical degradation of PVC macromolecules with radical coupling reaction with O2 to form a substance can not be , and has a thermal stability. Such thermal stabilizers may have one or several functions of both .
Ideal PVC heat stabilizer should be a multi-functional substance , or a mixture of some materials , they can achieve the following functions: First, replacement lively, unstable substituent ; second is to absorb and neutralize the release of PVC during processing HCL, eliminating the autocatalytic degradation of the HCL ; third neutralization or passivation of the catalytic metal ions from the degradation and other harmful impurities ; Fourth, through the chemical reaction forms an unsaturated bond can block the  PVC processing aid continued growth inhibition degradation coloring ; five is the best protection against ultraviolet radiation shielding effect . Typically heat stabilizers according to their performance with the use of special , rare cases used alone , and most varieties are powdery , some are highly toxic chemicals. For ease of use , to prevent dust poisoning, reduce toxic substances or replaced by non-toxic substances, at home and abroad in recent years developed many kinds of composite stabilizer , for example , the world famous German brand composite stabilizer Bear series , the United States , Germany, Japan, Netherlands and other countries or organotin compound organotin stabilizers have considerable market share in China . Therefore , efforts to promote the application developed in China with high efficiency , low cost , no dust pollution and non-toxic or low toxicity of new composite stabilizer , is the urgent need for the development of the plastics industry .
Ideal thermal stabilizer should also absorb HCL, remove the active site , the addition of a conjugated polyene chain , destruction carbenium salts and prevent auto-oxidation , etc. , which does not produce a product of catalytic degradation of PVC . The actual heat stabilizers with different functions due to exhibit different thermal stability characteristics ,
1 ) cadmium , zinc soap is typical of aluminium stearate  early -type heat stabilizers , can quickly absorb HCL, and Cd, Zn in the catalyst to effectively replace PVC chain carboxylate unstable chlorine atom , thereby effectively suppressing the initial degradation and coloring , but because of consumption of fast transformation products CdC12, ZnC12, but also off the HCL PVC efficient catalysts , which will lead to degradation of the material PVC vicious suddenly darkened , so long-term thermal stability .
2 ) barium, calcium soap is a typical long-term thermal stabilizers, only the function of absorbing HCL , PVC can not effectively suppress coloration , but the transformation products BaC12, CaC12 non- catalytic activity , does not cause a sudden black PVC , long-term heat stability better.

PVC heat stabilizers some of the important role

1 absorption and HCl, inhibit its catalytic automatically . Such stabilizers include lead salts , organic acids, metal soaps , organic tin compounds , epoxy compounds, amines, metal alkoxide and a phenolic salts and metal thiolate salt. They are available with HCl to de- HCl reaction inhibition PVC .
(2) replacement of PVC unstable allylic chlorine tin stabilizer  molecule or a tertiary carbon atom chlorine atom , inhibit de PVC. Such as organic tin stabilizer of PVC unstable molecule of chlorine ligand binding occurs , the ligand , organic tin substitution with an unstable chlorine atoms . 3 with the addition reaction of a polyene structure , damage the formation of a large conjugated system and reduce coloration . A salt of an unsaturated acid or ester containing double bonds , and the PVC molecules conjugated diene double bond addition reaction , thereby destroying the  Diethyleneglycoldibenzoate conjugated structure, and color.
 4 capture free radicals and prevent the oxidation reaction . Such as adding phenolic heat stabilizers can block off HCl, is due to give phenol H atom radical degradation of PVC macromolecules with radical coupling reaction with O2 to form a substance can not be , and has a thermal stability. Such thermal stabilizers may have one or several functions of both . Ideal PVC heat stabilizer should be a multi-functional substance , or a mixture of some materials , they can achieve the following functions:
1 replacement lively , unstable substituent such  titanium dioxide as attached to the tertiary Cl Cl atom or allyl chloride , to form a stable structure ;
(2) to absorb and process the PVC processing and release of HCl, HCl elimination autocatalytic degradation ;
 3 passivated on the degradation neutralized or catalytic metal ions and other harmful impurities ;
 4 by chemical reaction forms an unsaturated bond can block the continued growth inhibiting degradation coloring ;
5 The best protection against ultraviolet radiation shielding effect .

PVC heat stabilizers and mechanism

PVC is the first ideal structure - tail structure-CH2-CHCl-CH2-CHCl-, is quite stable. But so far the PVC synthesis method can not be like synthetic butadiene rubber, as the role of catalyst in Jigger so there are rules for orientation cis butadiene polymerization is a free radical polymerization of vinyl chloride random polymerization, in addition to its stable First - tail structure, as well as the first - the first structure-CH2
-CHCl-CHCl-CH-, tail - tail structure-CHCl-CH2-CH2-CHCl-; generate a coupling disproportionation vinyl Results CH2 = CH-CHCl
-CH2-structure and allyl chloride-CH2-CH = CH-CHCl-CH2 and so on.
Generated in the PVC synthetic allyl chloride, chlorine and tertiary carbon double bond in its molecular chain structure instability, unstable cis
Sequence is: PVC within the molecular chain allyl chloride> tertiary carbon Chlorine> terminal allyl chloride> sec chlorine. PVC processing is easily degraded but because
The PVC molecular chain structure, there vegetable stearic acid  is instability factors, such modification not be stabilized, and its decomposition temperature is about 130 ℃, but
PVC resin to be processed into useful articles, molding temperature to above 190 ℃. Therefore, you must add to its junction heat stabilizer
Improved structure for stabilization. Four types of heat stabilizers heat discoloration Comment
Ideal thermal stabilizer should also absorb HCL, remove the active site, the addition of a conjugated polyene chain, from the destruction of carbenium
Sub-salt, to prevent the auto-oxidation and other functions, without generating a catalytic degradation of PVC products. The plastic processing aid  actual heat stabilizer due to
Has a different function and behave in a different thermal stability characteristics, can be divided into early-type, long type, intermediate type and versatile
Four categories.
1) cadmium, zinc soap is typical of early-type heat stabilizers, can quickly absorb HCL, and Cd, Zn in the catalyst effectively carboxylic
Replace PVC chain radical unstable chlorine atoms, thereby effectively suppressing the initial degradation and coloring, but because of consumption of fast transformation products CdC12, ZnC12, but also off the HCL PVC efficient catalysts, which will lead to the aluminium distearate  degradation of PVC material suddenly becomes a vicious black, so
Long-term thermal stability. 2) barium, calcium soap is a typical long-term thermal stabilizers, absorption HCL function only and therefore can not effectively suppress coloring PVC,
But the transformation products BaC12, CaC12 does not have catalytic activity, does not cause a sudden black PVC, long-term thermal stability. 3) fatty acids, organic tin are intermediate, both absorbs HCL, can effectively replace PVC with chain carboxylate unstable chlorine
Atoms, and conversion products do not have catalytic activity.

The main types of PVC

1.pvc generally soft products.
You can use the extruder extruded hoses, cables, wires, etc.; utilize injection molding machine with a variety of molds can be made of plastic
(7740, -270.00, -3.37%) sandals, shoes, slippers, toys, auto parts and so on.
2.pvc film. pvc mixed with additives, plasticizers, the use antimony trioxide  of three-roll or four-roll calender and formed into a predetermined thickness of a transparent or colored film,
This method of processing a film, a calendered film. You can also cut, heat processing, packaging bags, raincoats, tablecloths, curtains, inflatable toys. Wide transparent film can be used for greenhouses, plastic greenhouses and film use. The biaxially oriented thin
Film, suffered heat shrinkable properties, can be used for shrink packaging.
3.pvc coating products.
There is pvc artificial leather substrate confused spreads the cloth or paper, and then at 100 degrees or more plasticizing. Also available
In the first pvc calendered into a film with additives, and then laminated together with the substrate. No artificial leather substrate is directly from the rolling machine rolling into a certain thickness of the soft system sheet, and then the pressure on the pattern can be. Can be used to make leather suitcases, purses, book cover,
Sofa and car seat, as well as floor coverings, flooring materials for buildings.
4.pvc foam products.
Soft pvc mixing, adding the right amount titanium dioxide rutile  of foaming agent made of sheet material, the foam molding of foam can be used for foam slippers
Sandals, insoles, and shockproof cushion packaging materials. Extruder can also be used as the basis of rigid pvc foam sheet and low profile, alternative timber trial, is a new construction material only.
5.pvc transparent sheet.
pvc impact modifier was added and calcium zinc stabilizer  the organic tin stabilizer, mixing, plasticizing, rolling and a transparent sheet. Using thermal
Molding can be made thin transparent containers or for vacuum packaging, is an excellent packaging materials and decorative materials.
6.pvc hard board and sheet.
adding pvc stabilizers, lubricants and fillers, the kneaded, extruded with an extruder to a variety of hard tube diameter, shaped
Tubes, bellows, as the plumbing, water pipes, wire casing or stair railing. Good hot rolled sheets overlap will be
Made of rigid plates of various thicknesses. Sheet can be cut into desired shape and then use pvc welded by hot air welding
Various chemical resistant tanks, duct and containers.
7.pvc other.
Windows and doors with rigid shaped materials assembled. In some countries such as aluminum windows and wood windows and doors windows and doors occupy common market

Aluminum sulfate coagulation wastewater treatment and wastewater treatment with

Aluminum sulfate as the coagulant , it is acidic chemicals, waste water can also be used as an alkaline pH adjustment chemicals . It is a traditional pharmaceutical wastewater , which  organic pigments both participate in the wastewater effluent coagulation treatment , and is also involved in wastewater treatment . We look at what is waste and wastewater coagulation treatment and disposal method .
Wastewater treatment aluminum sulphate coagulation coagulation wastewater treatment to waste water by adding coagulant ( such as aluminum sulfate , ferrous sulfate , etc. ) , dissolved alumina colloid, the colloidal substances in wastewater the fine coagulated or flocculated suspended solids are separated out water and solid contaminants , methods  Flame retardant to purify wastewater .
And wastewater treatment
And wastewater treatment method is the use of treated wastewater and the purification of the approach. The basic principle is to make the acidic wastewater plus the OH or H and the alkaline wastewater OH and H- plus interactions generate weak dissociation of water molecules , while generating additional soluble or insoluble salts, thus  PVC plasticizer eliminate their harmful effects. Obey the law of the reaction equivalent , can be processed using this method and recovered by using an acidic water and alkaline water , acidic or alkaline water can adjust the PH. The chemical treatment of sewage by chemical reaction action to remove the impurities , mainly in sewage processing target inorganic or organic ( difficult biodegradable ) dissolved substances or colloidal substances. Commonly used chemical treatment methods such as chemical coagulation , neutralization, chemical precipitation and oxidation-reduction method . In the coagulation of aluminum sulfate, ferrous applications are more extensive , and in the middle and the most widely applied method is lime , ferrous sulfate is also used for redox .

The use of aluminum sulfate sweatband

Heard of aluminum sulfate paper sizing role in the coagulation of sewage treatment , as alum and other raw materials , such as medical supplies . Heard of it can be used as antiperspirant it ? In this upcoming summer , we take a look at how aluminum sulfate sweatband .
What is the antiperspirant
 Antiperspirant is used to inhibit sweating chemical PVC stabilizer  products, generally used in human underarm sweating so easy part . Antiperspirant aluminum and zirconium -containing , and damage can block Porokeratosis , sweat glands can be suppressed . Sweating agents usually spray , roller , and paste , three types. Currently the market launch stressed that we can sweatband thirty antiperspirant deodorant , the main component of aluminum , aluminum and aluminum molecules through the painting , you can block the body sweat duct outlet , to improve the situation sweat , the effect pretty good, but Metal stearate  antiperspirant only applies to a small area, such as the armpits , face , etc. , the disadvantage is to maintain a limited effect and validity is not long. Antiperspirant effect of aluminum sulfate
 Antiperspirants to reduce perspiration to 20% can be regarded as antiperspirants , metal salts such as aluminum chloride , aluminum sulfate and aluminum chloride is that the effective agent in many products . Since antiperspirants closed and cause irritation or rash sweat , so try not to use more than you actually need antiperspirant . Sugary antiperspirants, to PVC heat stabilizer  avoid the use of safe , because a lot of people in the use of zirconium-containing products, their armpits called granulomas appear small mass. Avoid sweating inflammation or just shaved skin using antiperspirants . Deodorants and antiperspirants applied to the shaved skin but not dry , the most prone to skin irritation symptoms, the causes of which are such products a common side effect. In summary, aluminum sulfate and ferrous sulfate salts such as antiperspirants , you can say it is the second as a deodorant , fluoride agents and flotation agent after another little-known feature . I will continue to serve you tap its other effects .

PVC heat stabilizers mainly of some description

 1 ) absorption and HCL, inhibit its catalytic automatically . Such stabilizers include lead salts , organic acids, metal soaps , organic tin compounds , epoxy compounds , phenol salts and metal thiolate salt. They can react with HCL , inhibition PVC de HCL response.
 2 ) replacement of PVC molecules suppress unstable allylic chlorine atoms off the PVC. Such as organic tin stabilizer of PVC unstable molecule ligand binding chlorine atoms in the ligand , a chlorine atom with an unstable organotin substitution .
3 ) the addition reaction of  dibasic lead stearate a polyene structure , a large conjugated system damage formation and reduce coloration . A salt of an unsaturated acid or ester containing double bonds , and the PVC molecules conjugated diene double bond addition reaction , thereby destroying the conjugated structure, and color.
 4 ) to capture free radicals and prevent the oxidation reaction . Such as adding phenolic heat stabilizers can block off the HCL, is due to give phenol H atom radical degradation of PVC macromolecules with radical coupling reaction with O2 to form a substance can not be , and has a thermal stability. Such thermal stabilizers may have one or several functions of both .
Ideal PVC heat stabilizer should be a multi-functional substance , or a mixture of some materials , they can achieve the following functions: First, replacement lively, unstable substituent ; second is to absorb and neutralize the release of PVC during processing HCL, eliminating the autocatalytic degradation of the HCL ; third neutralization or passivation of the PVC stabilizer for fittings  catalytic metal ions from the degradation and other harmful impurities ; Fourth, through the chemical reaction forms an unsaturated bond can block the continued growth inhibition degradation coloring ; five is the best protection against ultraviolet radiation shielding effect . Typically heat stabilizers according to their performance with the use of special , rare cases used alone , and most varieties are powdery , some are highly toxic chemicals. For ease of use , to prevent dust poisoning, reduce toxic substances or replaced by non-toxic substances, at home and abroad in recent years developed many kinds of composite stabilizer , for example , the world famous German brand  oxidized PE WAX composite stabilizer Bear series , the United States , Germany, Japan, Netherlands and other countries or organotin compound organotin stabilizers have considerable market share in China . Therefore , efforts to promote the application developed in China with high efficiency , low cost , no dust pollution and non-toxic or low toxicity of new composite stabilizer , is the urgent need for the development of the plastics industry .

pvc heat stabilizer some simple instructions

With many countries in the world for environmental awareness and increasingly severe environmental problems , related health problems in people's daily lives by everyone concerned . PVC products used as an extremely wide range of general plastic surface , in the traditional PVC heat stabilizers , containing heavy metals such as lead salt heat stabilizer has a good cost advantage , is widely used . However, with the plastic processing aid  deepening of understanding and found that in the manufacturing process have serious dust pollution, once absorbed by the body after can not be excreted , seriously affecting the health of production workers ; while PVC products containing lead salts in the course will be varies with time precipitation , which also affects the user 's health, especially in medicine and health, children's toys and food packaging-related products is particularly serious. Therefore, the traditional heavy metal toxic heat stabilizers will be fully replaced . Future PVC heat stabilizers are mainly concentrated in the direction of non-toxic calcium / zinc composite heat stabilizer and organic tin  titanium dioxide in two ways. Ca / Zn compound stabilizer due to excellent overall performance and cost-effectiveness will ultimately shape the future country PVC stabilizer system of the subject. It is also about to become the next phase of PVC heat stabilizers hotspot.
In summary , pvc heat stabilizer study related subjects in previous studies , based on the liquid calcium / zinc composite heat stabilizer metal soap synthesis and complex research to improve synthesis process , improve heat stabilizer comprehensive performance to meet the  PVC flame retardant future needs of multi-functional stabilizer for the relevant enterprises and research institutions to provide a reference . And soft , transparent PVC heat stabilizer complex study to improve thermal stability . If these problems are resolved , there will be our country's non-toxic environmentally friendly PVC heat stabilizers to a higher level , widening environmentally friendly composite heat stabilizer market and shorten the gap with foreign countries . For widening liquid calcium / zinc composite heat stabilizer field of use has a positive meaning , and will directly promote the upgrading and development of the PVC industry .

aluminum soap component analysis of some of the key

Aluminum sulfate: white shiny crystals, granules or powder. Sweet. Stable in air. 86.5 ℃ when the loss of part of the crystal water, 250 ℃ lose all crystal water. Violently expanding when heated and become a sponge-like material. Thermal decomposition of red burn sulfur trioxide and aluminum oxide. When the relative humidity of about 25% lower weathering. Soluble in water, practically insoluble in ethanol, the solution is acidic. Long after boiling insoluble basic salt precipitation. The relative density of 1.62. Aluminum sulfate is a widely used industrial reagent, usually yellow iron oxide  with alum (potassium aluminum sulfate dodecahydrate both) confusion. Aluminum sulfate is often used as flocculant for purifying drinking water and wastewater treatment equipment which is also used in the paper industry. Aluminum sulfate application: 1. Papermaking industry as paper sizing agent to enhance water-resistant paper, anti-seepage performance; 2 dissolved in water to make the water and natural rubber fine particles agglomerate into large floc was thus removed from water, the coagulant for water and wastewater; 3 as turbidity purification, also used as a precipitating agent, fixing agent, fillers and iron oxide black  the like. Used in cosmetic antiperspirant cosmetic ingredients (astringent); 4 Fire industry, and baking soda, composed of foam blowing agents; 5. Analytical reagents, mordant, tanning agents, oil bleaching agent, wood preservative agents; 6 pasteurized albumin stabilizer (including liquid or frozen whole eggs, egg yolk protein or); 7 can be used for raw material for the manufacture of artificial stones and advanced ammonium alum, aluminates other; 8. fuel industry , in the production of chrome yellow and color lakes made the  plastic processing aid precipitating agent, and a filler while underway fixing role. Preparation of aluminum sulfate: pressurized by the bauxite and sulfuric acid reaction. Or sulfuric acid decomposition alunite, kaolin and alumina containing silicon material can be obtained. Aluminum sulfate can also be aluminum hydroxide (Al (OH) 3) into sulfuric acid (H2SO4) is prepared. 2Al (OH) 3 + 3H2SO4 + 10H2O → Al2 (SO4) 3.16 H2O 1. Crystallized from the resulting acidic solution of aluminum sulfate hydrate crystals slowly heated, it gradually dehydrated, and finally the temperature was raised to 350 ℃, is completely Dehydration as anhydrous aluminum sulfate; 2 sulfuric acid method: pulverized to a particle size of bauxite, the addition of sulfuric acid to the reaction vessel and the reaction solution after sedimentation, the supernatant adding sulfuric acid to neutral or slightly alkaline, and then concentrated to about 115 ℃, solidified by cooling, crushing prepared products.

calcium stearate simple narrative

Heat stabilizers for PVC and a variety of plastics processing lubricant , release agent . In rigid products , and  tribasic lead sulphate the base of lead salts , lead soap can increase the gelation speed. Also used in food packaging, medical equipment and other requirements nontoxic soft film and equipment. Can be made of polyethylene , polypropylene, halogen absorbent to remove the residual catalyst on the adverse effects of color and stability . As a plasticizer in rubber processing , make the whole into a natural rubber and rubber softening , and almost no effect on curing . Also used as a molding  epoxidation of soybean oil of polyolefin fibers and lubricants , grease thickening agent, textile waterproofing agent, paint flatting agent , when manufacturing plastic LP plasticizers. Also used in pencil manufacturing and pharmaceutical , perfume industry . Polyolefin polyolefin acid neutralizer color stability and corrosion have a direct contribution ;
Lubricating / processing aids improve  carbon black powder the polyolefins, polyamides , styrene and rubber in the extrusion molding ( film, fiber , profiling , etc. ) , and press molding processability.
Release properties of the thermoplastic plastics , rubber, and thermoset articles, such as unsaturated polyester polyurethane foam . Storage
The product packaging woven bag lined with plastic bag, 20KG or 10KG, stored in a cool , dry place , away from sources of fire , moisture , heat, not with acid, alkali and corrosive substances mixed Commonwealth Games .

Some of the major properties of calcium stearate

Calcium stearate, calcium stearate uniform nature of fine white powder. Melting point 175 ℃, density 1.035g/cm3. Dissolved in toluene , ethanol, benzene and other organic solvents , insoluble fluorescent brightener  in water . Slowly heated to 400 ℃, decomposition, combustible , the case of decomposition of stearic acid and corresponding calcium salts . Water absorption, non-toxic.
Use heat stabilizers for PVC and a variety of plastics processing lubricant , release agent . In rigid products , and the base of lead salts , lead soap can increase the gelation speed. Also used in  Impact modifier for PVC food packaging, medical equipment and other requirements nontoxic soft film and equipment. Can be made of polyethylene , polypropylene, halogen absorbent to remove the residual catalyst on the adverse effects of color and stability . As a plasticizer in rubber processing , make the whole into a natural rubber and rubber softening , and almost no effect on curing . Also used as a molding of polyolefin fibers and lubricants , grease thickening agent, textile waterproofing agent, paint flatting agent , when  whitening agent manufacturing plastic LP plasticizers. Also used in pencil manufacturing and pharmaceutical , perfume industry . Polyolefins polyolefin acid neutralizer and corrosion stability of the color is directly offered ; lubricating / processing aids improve the polyolefins, polyamides , styrene and rubber in the extrusion molding ( film, fiber , copying , etc. ) , and press molding processability. Release properties of the thermoplastic plastics , rubber, and thermoset articles, such as unsaturated polyester polyurethane foam

properties of metal soap

SBS has a good high and low temperature performance and temperature performance , is currently the most widely used  dibasic lead phosphate at home and abroad range of modified bitumen varieties but , SBS and asphalt between the density, molecular weight , viscosity, polarity and solubility parameter difference compared to other properties large , high-temperature storage process prone to SBS and bitumen phase separation phenomenon , segregation test in order to achieve the requirements of product fluorescent brightener  standards modified asphalt is very difficult , this feature greatly limits its application [ 1 ] and therefore , the present study is one of the hot issues resolved SBS modified asphalt production and use in the presence of the main thermal storage stability problems. SongXiaoyan [ 2 ] et al showed that organic salts increases the viscosity of bitumen modified asphalt , Meanwhile modified , reducing the temperature sensitivity of asphalt , improved high temperature performance , low temperature performance of the asphalt little effect . Yang Jinquan [ 3 ] and other studies have shown that people , metallic soap, the lack of improvement in low temperature crack resistance , but can  PVC heat stabilizer for fittings enhance the high temperature stability of asphalt in this issue on the basis of previous studies , presented at the SBS modified asphalt adding metal soaps, prepared SBS / metallic soap compound modified bitumen studied SBS, metal soaps complex with its modified asphalt mixture performance is analyzed SBS / metallic soap compound modified asphalt macroscopic mechanical properties and microstructure morphology between

Organotin stabilizers may be used alone

also for both the transparent where good thermal stability , but can also be the barium , cadmium compounds mixed to obtain a synergistic effect .
Tin stabilizer good machining properties , they are particularly suitable for rigid products . While its light stability than barium / cadmium stabilizer better , but some in the processing of organic tin to arouse tacky lubricant is therefore required to be adjusted . Tin plastic lubricant  compounds containing sulfur and lead compounds contaminating action will occur , so the two should be avoided in combination .
( 1 ) Dibutyl tin dilaurate : The stabilizers can be made very transparent products , soft products are often used in the . Its processing temperature is not too high , the quality of the products, processing Chin have sufficient thermal stability and good light stability.
( 2 ) two maleic acid butyl tin : its thermal stability than dibutyltin dilaurate is good, especially for hard injection or extrusion products. Processing temperatures up to 200 ° C or more, with PVC foaming board stabilizer  good light stability . Such stabilizers prevent the contaminating action of vulcanization , the sulfur can effectively replace the tin compounds . The disadvantage is that at high concentrations may bleed , while in the process of irritating gases released .
( 3 ) a sulfur-containing tin stabilizers : This type of material has a maximum thermal stability , but also can obtain good product transparency , it is widely used for a transparent extruded products in rigid . Usually the hard composition an amount of about 2.0 ~ 3.0Phr, be less soft . Because they have no lubrication, so the application must be added the right amount of lubricant.
( 4 ) n-octyl tin salts : All of the tin compounds , in addition to other n- octyltin are toxic , so it is suitable for non-toxic products. Its characteristics with sulfur-containing tin compounds are close , suitable for hard or soft transparent tube. 4 , the stabilizer tends Although a variety of different stabilizers and combinations of the number of rapid growth, but lead compounds is still by far the most  low molecular polyethylene widely used . Lead stabilizer also has drawbacks , chief among them :
( 1 ) toxicity.
( 2 ) to achieve the required degree of stability , a higher dosage .
{3 ) a large proportion of the volume of products to make steady increase in cost .
( 4 ) so that the plastic colored transparent products can not be produced ( except for certain lead compounds ) .
( 5 ) in the plastic dispersion is difficult .
Especially the toxicity of lead compounds , these dust -like powder in a pinch and toxic or plasticizing process of the operator's health has been compromised. Therefore, only valid when the suction removal equipment can be directly applied to the open type kneading machine, and preferably a stabilizer way sucked plasticizer added to the appropriate ground pulp , or the manufacturer of the lead salt was crisp like , pasty , granular or liquid , particularly liquid lead stabilizers , which can reduce the relative amount in the formulation , not only eliminates the risk of toxic dust , and the ratio of solid and slurry pipelines easier to avoid dust emissions, to prevent lead poisoning.
In the selection of a stabilizer , to take into account the savings with lead . Therefore , the choice of stabilizing effect of a good multi-component composite stabilizer is necessary. Other liquids used stabilizer is improved dispersion stabilizer effective way . Especially cadmium / barium / zinc and epoxy compounds and chelating agents , such combinations are often applied liquid stabilizer , in addition, lead stearate pulp, pulp cadmium , barium pulp powder flying can also be changed for improvement .
Composite stabilizer applications, but also stabilizing agent with one important development process . Indeed, some soaps can be applied individually, after mixing with other stabilizers has a good synergistic effect . The method of the composition of mixed system , not only the individual simply mixed with each other stabilizers , and metal soap -based stabilizers in the manufacturing process to be coprecipitated . For example, barium laurate / cadmium , etc., so the effect will be more significant. Now the application has become more complex mixture including barium / cadmium organic salts , zinc soap antioxidants , ultraviolet absorbers, chelating agents , and epoxy compounds .

Wide range of uses stearate

Stearate is an additive for a wide range , the most important role of the polymer with very good results. Such as polyolefins can be used as an acid neutralizer , the article has a good lubricating effect , increase  chrome oxide life expectancy ( in terms of the thermoset product ) . Market , stearate great demand, generally focused on: calcium stearate, zinc stearate, sodium stearate these types . Lianyungang Huaming Tai Material Technology Co., Ltd. is mainly engaged in three types of stearate.
Production of stearic acid salt is a complex process, after several in-depth exchanges , Changzhou Yi degrees Drying Equipment Co. recommend my company developed flash dryer as stearate final  titanium dioxide rutile process section . More than two years , the use of easy -degree flash dryer for drying stearate effect is remarkable, not only high production efficiency, and fewer human resources needed , greatly reducing the cost of doing business .
 Drying stearate ( calcium stearate, zinc stearate, sodium stearate ), the main difficulty lies in mesh powder is too low, the drying time is not a good collection of dust than expected . Choose the traditional bag dust removal equipment can not solve this problem. Our response to this situation , the traditional baghouse has been improved, under the Plastic chemical  premise of ensuring the production , making the maximum amount of material was collected . Stearate using flash dryer drying , the effect is remarkable, and , again using the flash drying equipment high production requirements under full load operation. Tailored for the enterprise is the most suitable drying equipment drying machine I designed purpose . Communicate constantly , constantly solving puzzles , and constantly break through the self .

stearate some simple description

Spin flash dryer is my factory digestion and absorption of foreign advanced technology , improving developed for drying sticky cream , cake and powder -like materials such as a new type of drying equipment. The factory is equipped with modern laboratories , users can  Impact modifier for PVC do all kinds of material drying tests on behalf of , and assistance to provide test data selection . Works by hot air from the inlet into the high-speed rotating annulus stirring and crushing chamber. Large particles , the larger group than the wet granules are mechanically crushed in the mixing chamber , and subjected to centrifugation , shear , impact , friction and so further micronized particles reduce the moisture content to increase grain evaporation area , low moisture content , smaller particle entrained particles are rotated up , dried further in the rising process . Since the role of gas-solid flow in aluminium stearate  rotating inertia of solid phase than gas , solid-gas relative velocity between the two phases is large, enhanced heat and mass transfer between the two phases , so the machine dry and high strength. Features 1, due to the material by centrifugation , shear , impact , friction is granulated highly dispersed state, and the gas-solid relative velocity between the larger , enhanced heat and mass transfer of the machine dry and high strength. 2 , dry gas into the bottom of the dryer produces strong rotating airflow on the wall material produced a strong rushing effect , eliminate the phenomenon of sticky wall . 3, in the bottom of the dryer temperature zone , heat-sensitive materials are not oxidized PE WAX  in direct contact with hot surfaces , to solve the problem of heat-sensitive materials coking discoloration . 4, due to the drying chamber gas speed at high residence time is short, high efficiency and fast , large-scale production of small devices . 5 , the drying chamber swirl piece set to control material moisture reached very low levels. 6, the upper part of the drying chamber can control the export of materials dispersed particle size and moisture . 1, the air filter 2 , blower 3 , the air heater 4 , the feeding device 5 , the host computer 6 , the cyclone 7 , organic dust : atrazine ( pesticides ) , cadmium laurate , benzoic acid , sterilization , sodium oxalate , cellulose acetate . 2 , the dye : anthracene Kun, black iron oxide , indigo blue pigment , T acid, titanium hydroxide , zinc sulfide , various dyes intermediates. 3 , inorganic : borax , calcium hydroxide, copper sulfate , iron oxide , barium carbonate , antimony trioxide , antimony pentoxide , metal hydroxides , metal salts of a variety of synthetic cryolite . 4 , Ceramics: kaolin , silica , clay. 5 foods: soy protein, gelling starch, lees, wheat bran , wheat starch, etc.

The method of zinc stearate

Zinc stearate : "White powder , insoluble in water , soluble in hot ethanol , benzene , toluene, turpentine and other organic solvents ; across decomposed into stearic acid, and the corresponding salts ; under dry conditions in a fire resistance, ignition point 900 ℃; hygroscopicity.
Discloses a particular class of zinc stearate and  iron oxide yellow its production process , characterized in that the use of stearic acid, zinc oxide or zinc peroxide or hydrogen
Zinc oxide, strong oxidizing agents, strong reducing agent combination according to the ratio of 100:14.3-19.5:0.2-1.5:0.02-0.5 , the  Metal stearate manufacturing process of the present invention
Simple , low energy consumption , no waste generation, do not pollute the environment, the present invention is a specific grade zinc stearate , product quality meet the national standard , and even some
Indicators better than the national one product standards , not only to meet the high polyethylene, polystyrene resin  iron oxide needs , but also for PVC, resin, rubber , textiles, cosmetics and other industries.

polyurethane material in the pipe Application

Have great use of the polyurethane material , the pipe also has a very large application . Anticorrosive material selection determines whether the long-distance oil and gas pipelines build quality . In the long-distance oil and gas pipelines construction, anti-corrosion  potassium stearate materials the basic requirements are:
( 1 ) Good electrical insulation: anti-corrosion layer between the opposite sides of a certain area of ​​resistance should be less than 10000Ω · m2; resistant strength not less than the breakdown voltage spark detector test voltage standard.
( 2 ) resistance to cathodic stripping : coating should have a certain ability to ensure corrosion resistance to cathodic stripping layer  PVC stabilizer for fittings and the substrate can be effectively and stick together.
( 3 ) sufficient mechanical strength : a certain impact strength, handling and to prevent damage caused by the soil pressure ; has good bending resistance , to ensure that the pipe construction not be damaged by bending ; has better wear , so as to prevent damage due to soil friction ; the pipe has good adhesion.
( 4 ) Good Stability: resistance to antimony oxide  atmospheric aging properties ; chemical stability ; good water resistance, low water absorption ; has sufficient heat resistance ; resistance, low temperature performance, ensure its stacked pull operation and construction no cracks, no shedding.
( 5 ) simple repair of : coating should be easy to repair after damage , saving construction time.
( 6 ) anti-microbial properties .

polyethylene wax (PE wax ) in the role of PVC pipe

Polyethylene wax (PE wax ) in PVC pipe Application : PVC pipe sections in the production , there will be not smooth and shiny is bad phenomenon.
Some people do use paraffin lubricant , but  heat stabilizer for foaming board the effect is not ideal. The use of polyethylene wax lubricant of PVC pipe sections have better results.
Paraffin wax lubricant as pvc , since a low softening point , good dispersibility , high temperature in the production process , basically the liquefied wax , evaporates into a gas in PVC pipe applications, the  calcium zinc stabilizer wax is difficult to play a role. Scattered ineffective, out of PVC pipe sections will have the surface stain .
Polyethylene wax (PE wax )
Polyethylene wax (PE wax ) produced PVC pipe profiles would not have such problems , because the softening point of the polyethylene wax itself is high , but at high temperatures, the polyethylene wax (PE wax ) but will become liquid , viscosity, polyethylene wax (PE wax ) poor dispersion , but the light is very good, polyethylene wax (PE wax ) , then a low viscosity , good dispersion , light can also.
Only pure polyethylene wax (PE wax ) production aluminum hydroxide  out of PVC pipe sections until smooth and shiny. Polyethylene wax containing impurities quality will be relatively worse .

Supply of PVC impact modifier intended use

Second, the main performance:
1, can be used as a polymeric plasticizer , and in the long-term use will not migrate to the product surface precipitation .
2, low temperature performance blends , polarity, anti-UV, anti- chemical and microbiological corrosion performance improved significantly .
3 , added to the PVC, ABS or PVC / ABS alloy to improve its thermal stability.
4 , the European regulatory approval for food contact industry .
5, in the PVC processing , Elvaloy ® 4924 can significantly improve the impact properties, including low-temperature impact resistance .
Third, the theoretical basis and the  oxidized PE WAX impact modifier advantage
PVC low-temperature impact strength are the main reasons is because a strong PVC molecules caused by intermolecular forces , because PVC strong molecular attraction between molecules makes PVC products subjected to external shock , PVC molecules difficult to produce the relative displacement , so that the impact energy can not be effectively converted to internal frictional heat , resulting in rupture of the material . Adding a plasticizer , CPE PVC because reducing the attraction between the molecules leaving the improved impact strength , but low molecular weight organic plasticizers are added when less easy to precipitate , and an anti- volatile plasticizing effect instead, the material becomes brittle and will greatly reduce the use of a large number of mechanical properties , it is difficult to use in hard products . The CPE of the polymer precipitated polymer although there is no problem , because its glass transition temperature above -10 ℃ , so the low temperature impact performance is not ideal. DuPont Elvaloy 4924 is an ethylene - vinyl acetate carbonyl (E / VA / CO) copolymer , molecular weight PVC rather , is a permanent plasticizer , not precipitated , anti-migration , can significantly reduce the intermolecular force PVC , the glass transition temperature - 36 ℃, to overcome the carbon black powder  low glass transition temperature and the CPE plasticizers easy to produce anti- plasticization defects. Not only can greatly improve the impact properties of rigid PVC and can effectively improve the weathering resistance.
Fourth, technical indicators:
Melt index (g/10min) 9
Density (g/cm3) 1.03
Tensile Strength (Psi) 1580
Elongation at break ( % ) 736
Glass transition temperature (℃) -36
Melting point (℃) 70
Solubility parameter 8.68
Five , the main application
1 , rigid PVC: improved formability , reduce subsequent vacuum forming temperature , forming speed faster , improve  plastic processing aid impact resistance ;
2, soft PVC: to increase weather resistance , low temperature resistance , chemical resistance and no -shift problems and improve impact resistance
3 , Footwear: with rubber handle, can increase wear and slip effect , against the soapy water and oil also increased many aspects of behavior .
4 , Other : PVC cable , PVC film, PVC leather and PVC and rubber blend products.

How polyacrylamide application as auxiliaries

Auxiliaries is to make paint can be securely adhered to the fabric as a binder. The polyacrylamide has a strong adsorption adhesion ability , it can be butyl stearate  used as additives in many application areas . Flocculant aluminum sulfate can be used as paper making, printing and dyeing fixing agent retention , and polyacrylamide as auxiliaries for textile dyeing almost throughout the entire process.
Polyacrylamide dyeing auxiliaries throughout the application
In the slurry bath, a small amount of cast polyacrylamide can reduce the use of the slurry , the slurry can be more uniformly adsorbed on the fabric, strengthening film.
Adding a small amount of polyacrylamide can increase the  oxidized PE WAX suction rate desizing , desizing chemicals in reducing concentrations and desizing costs. Added in the dyeing scouring polyacrylamide as its surfactant can increase the permeability of alkali , to reduce the processing time and improve the printing results. Polyacrylamide fabric can reduce sulfur oxidation spot, thereby improving product quality. In the dyeing of cellulose reactive dye can improve uniformity and anchor effect .
Polyacrylamide other additives applications In  acrylic processing addition , polyacrylamide as dyeing auxiliaries in addition to , but also as a sewage treatment flocculants or coagulant used . PAM as an additive applications , the molecules can promote other drugs properties play , play thickening , adsorption , or to form a network bridge such as the role is a set apprehend flocculation , dispersion, thickening , bonding, forming , gel , stable colloidal multifunctional additives.

Aluminum sulfate in wastewater treatment coagulant or flocculant is

To clear aluminum sulfate coagulant or flocculant is , first of all , we must first understand what is flocculation , what  aluminum stearate is concrete ? What is the principle of their application ? The application in wastewater treatment is kind of how ? And what difference ?
Coagulation is the sewage in the sewage , such as adding aluminum sulfate , ferrous sulfate, coagulation agents, suspended in water to electrostatic repulsion between the colloidal particles to eliminate , and then with sulfuric acid such as aluminum or PAM ability of  plastic processing aid suspension a combination of cohesion and flocculation process . What is the cohesion, which is a coagulation agent using a large amount of positively charged ions to eliminate electrostatic repulsion between the colloidal particles , the suspension coalescence . What is the wastewater flocculation , which is also the sewage dosing coagulation agent for processing, but this is no ordinary coagulation agents, but the polymer coagulation agent , the solution for the linear structure of polymers, the use of binding frame role of the small suspension bridge formed floc settling .
Aluminum sulfate in wastewater tiny particles with condensed sedimentation and adsorption effect. That is , the  Metal stearate sewage treatment aluminum sulfate coagulation agents. However , aluminum sulfate do not have the effect of bridging bond , in the absence of suspended colloidal particles can not be condensed under the premise and subsidence . Only present in the sewage on the basis of the colloidal particles floc process . Thus , aluminum sulfate is coagulant.

Laundry FWA some of the uses

 Laundry Tips Collection :
1, cleaning white , white socks stubborn stains on white clothing is difficult to eradicate , this time after taking a lemon slice boil water put the white clothes soaked in water for about 15 minutes after cleaning can be.
2 , wash clothes because of drying clothes sometimes smell shall not be treated , there will be unpleasant sour sweat , take Dioctyl phthalate  white vinegar mixed with water , soak a taste of clothes for about five minutes , and then put in ventilated place to dry clothes on it !
3 , pen and India to deal with the clothes down on alcohol first fountain pen scratches on clothes , every scratch on both the uniform coverage on alcohol , alcohol concentration to use not less than 75 % of the medicine with alcohol . The clothes down on alcohol put this face , try not to touch the clothes of the other side , or the imprint color ballpoint pen or may be transfected into the rest of the clothes . Washbasin with ordinary , half ready to basin of water , the next will be two full bottle of bleach poured in the water , note that it must be a full two caps down. Take along to do mixing, then add a little detergent, the amount you can own hands . Slightly even after mixing, allow detergent to fully dissolve in water . Well, now clothes are soaked in water , time is twenty minutes. Time is up, wash clothes , a little mark is gone !
If the ball-point pen marks and traces of heavy, using the above method if the surviving ruins , and finally add soap and gently rub with toothpaste , then rinse . ( But non with open blisters ! )
Clothing stains ballpoint pen marks there is another solution : that is, do not rush to put the clothes into the water , but the first wash with gasoline touches the part of the wash .
4 , washing clothes soy sauce stains
One approach: need to use sugar . First, the local water soaked with dirt , and then sprinkle with a spoonful of sugar, rub their hands . We can see part of the track has touches of soy sauce, sugar , and then washed with water , can remove stains.
Option two : the need to use baking soda . The white vest soaked in soy sauce stained the place painted soda stains , wash with water after 10 minutes , you can get rid of soy sauce stains .
Option three : the need to use fresh lotus root, lotus root knife to cut fresh , fresh lotus root juice applied to the track at the soy sauce , 10 minutes after washing in water , you can get rid of soy sauce stains .
5 , washing clothes with paint
Clothes rubs paint how to do it ? Way is to wipe the  titanium dioxide anatase sticky oil cooler parts of the paint , because the cool oil soluble substances contained in the paint , after rinse . If coated with water-soluble paint ( such as water-soluble paint, latex paint ) and home interior paint , a wash water that is lost in time ; paint if nylon fabric is stain , rub can be coated with lard , and then use detergent immersion , water drift net .
6 , clean grass stains
You need to prepare one hundred grams of salt , addition, you also need to prepare 1000 g of water . Pour water into a container, mix by hand , stained with grass stains the clothes into the pot , soak in salt water for 10 minutes. The clothes into the washing in water , and you will find that you can easily stubborn grass stains to wash it.
7 , cleaning stained clothes
Into the warm water in the washing machine , start the washing machine rinse , add 84 disinfectant , add about one-third Bangang water bottle disinfectant, dilute , add clothes , covered with cover, rinse about 25 minutes , after 25 minutes remove clothing, clothes to dry , you restore the original color.
If you want to avoid the clothes do not fade, bought back the new Yiyi , must put some salt in the water ( a bucket of water a teaspoon ) , washed to immediately rinse with water , do not soak too long, oh ! Finally, do not in the sun exposure , sun Oh will dye degeneration . Should be placed in  chromium oxide a cool ventilated place to dry .
8 , cleaning blood
Just addicted , they should immediately wash with cold water or dilute brine ( disabled hot water, because blood contains proteins , when heated, will be solidified , not easy to melt ) , then soap or 10% potassium iodide solution to clean ; pounded with white radish juice grated carrot mixed with salt can remove blood stains on clothing ; with 10% tartaric acid solution to wiping stain Department, and then cold water wash ; using enzyme detergent to remove blood stains , very good results ;
If the stain longer time , 10% of ammonia or 3% hydrogen peroxide wipe dirt Department , after a while , and then wash in cold water strong .

fluorescent agent Mask

There are said to be sisters children recently spent a mask effect is super good , the skin becomes special white . Deposited on a one day together , come up with the mask is also very common packaging, the  PVC flame retardant inside one , or non-woven fabric , is said to try it . Day by day, the rinsing mask, I felt really white , and no one around to do the mask on the skin than obvious. Effect is really good , it really makes me this mask admiration. Friends also very pleasantly surprised to say it is only a few dollars , so inexpensive things , I feel really find the gems . Finished I'll pick up a bit and sisters out to dinner , because it is noon , outside the sun king , to the outside I found my sister 's face is so strange , ah, glowing , particularly bright ! To be honest white, but a little frightening wood there ! !
I would say , and she looked at my face , my face felt very strange ! ! !
After dinner , we hurried home. I was skeptical mask added fluorescent agent , and before my sister with a mask all night, she just felt it plainly, no attention else. Then checked the Internet
The following are network information
Adding the fluorescent whitening agent in cosmetics should generally distyrylbiphenyl class of synthetic chemicals , but the resulting fluorescent substances may be natural extracts , it may be some compound component .
Although more than half of the plant extract containing a fluorescent component , but there is little to add cosmetics pure plant fluorescent substances. Fluorescent brighteners as a dye , is a chemical composition , are often added to cosmetics , can absorb invisible ultraviolet light , and then converted to a light blue fluorescence released , and can block light blue Face showing a gray-blue , it is very smooth face . Taipei ultimate dermatology president of Taiwan Society of Aesthetic Medicine Education Committee chairman Fon-Yi Sung said : "We are yellow , blue fluorescence in the hair of ' neutralizing ' down , you can make the brightness of the face itself is greatly improved, people have a washing face on white, bright face on Cawan Wei Shi functions . " What is the harm fluorescent agent ?
Whether natural or synthetic fluorescent agents will produce certain harm to the human body , especially the synthetic fluorescent brighteners, there are certain risks , is easy to migrate to the stratum corneum , the blood , causing mutations that may cause cancer , there are also may lead to human rejection , people allergies.
Detergents on the fluorescence agent already has added ceiling , skincare , there are no requirements. After all, did not care fluorescent agent functions after entering the skin is difficult to be metabolized , so no  low molecular polyethylene fluorescent agent should try to choose products more at ease.
How to detect whether a mask containing the fluorescent agent ?
Can verify the authenticity of banknotes ultraviolet light , you can also use a professional Wood's light , illumination in the dark mask, to see whether the dissemination of light blue fluorescence , basically you can determine most of the mask , of course , not all contain fluorescent the can see.
So the sisters must be careful ah , whitening products effective too fast, probably have a bad component , can cause bodily injury ! ! !
Also , another thing that makes me very chilling , even if this mask with a fluorescent agent blatant kind of thing , but it can still be seen on the packaging QS quality and safety logo, the logo should be inspected on behalf of this thing right ? But such products to the market actually has , let me chilling ah ... our quality on the market of food, supplies and even cosmetic issues , reported on TV as long as a consumer to polish his eyes always say , know how to identification, if we consumers know everything, what will be identified , it is up to the quality inspection departments is what to do with it ?
If there is no good mechanism to test , then we will have to identify themselves , to everyone's beauty and health,
I am now to popularize some of this knowledge .
Commonly used fluorescent agents  pvc additive are zinc silicate , zinc sulfide cadmium, fluorescent yellow , Morin and so on. According to the chemical structure can be divided into five categories : ① stilbene , and certain synthetic fibers for cotton fiber , paper , soap and other industries , with a blue fluorescence ; ② coumarin type, with cumarone basic structure , for celluloid , polyvinyl chloride , etc., with a strong blue fluorescence ; ③ pyrazolone type , for wool, polyamide, acrylic and other fibers , a green fluorescent color ; ④ benzo oxygen and nitrogen , was used in acrylic and other fibers and polyvinyl chloride , polystyrene and other plastics , with a red fluorescence ; ⑤ phthalimide type, used for polyester, acrylic, nylon and other fibers , with a blue fluorescence.
Its main components : stilbene derivatives , such as some lipstick, in which the detergent contains a fluorescent agent. When you use the mask must pay attention to , it's best to experiment in the hand , do not directly in the face.
There is no need to rush , whitening is the result of long-term adherence , and can not bear fruit in a few days . General leather skin metabolism cycle is 28 days , to go through the complete cycle , skin whitening ingredients to complete metabolism, inhibit melanin formation , makes a good whitening effect . Use the mask for three consecutive days , there will be some effect . The best selection of botanical skin care products.