Ideal for PVC heat WSD plastic processing aidstabilizers should be a versatile substance

Ideal for PVC heat stabilizers should be a versatile substance , or a mixture of some of the material, they are able to perform the following functions : First, replacement lively, unstable substituents ; second is to absorb and neutralize the release of PVC processing HCL, eliminating plastic additive autocatalytic degradation of HCL ; Third neutralize or inactivate catalytic degradation of metal ions and other harmful impurities ; Fourth, through various forms of chemical reactions can be blocked unsaturated bond continues to grow , inhibiting degradation coloring ; five is the best shield against ultraviolet protective effect . Generally, heat stabilizers according to their performance with the use of special , very little is used alone , but most of the species in a powder form , some of which are highly toxic chemicals. For ease of use , to prevent dust poisoning, reduce toxic substances or substitute non-toxic substances, at home and abroad in recent years developed a wide variety PVC plasticizerof 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 a considerable market in China . Therefore , the development of China's efforts to promote the use of high efficiency, low cost , no dust pollution and toxic or low toxicity of new composite stabilizer is an urgent need for the development of China's plastics industry .

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.

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.

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

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 .

Why do we need PVC heat stabilizers Processing

PVC heat stabilizers Processing Why do we need ?
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  stearate aluminum Jigger so there are rules for orientation cis butadiene polymerization .
Radical polymerization of vinyl chloride is a random polymerization , in addition to its first stable - tail structure , there are first - the first structure - CH2-CHCl-CHCl-CH-, tail - tail structure -CHCl-CH2-CH2-CHCl - ; generating 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  magnesium stearate instability , unstable order : PVC within the molecular chain allyl chloride > tertiary carbon Chlorine > allyl end groups chloride > Chung chlorine. PVC is susceptible to degradation during processing because of the structure of PVC molecular chain instability exists , if not modified for stabilization , the decomposition temperature is about 130 ℃ , but that the PVC resin processed into useful articles , molding temperature to at above 190 ℃ . Therefore , you must add heat stabilizers stabilize its structure improvements.
Pvc in the synthesis process so you need to add PVC heat stabilizers.

pvc heat stabilizers tribasic

The chemical synthesis of many of stabilizer on the environment are likely to cause environmental pollution , the tribasic pvc heat stabilizer is also the possibility of the existence PVC foaming board stabilizer  of such . Now we are on pvc heat stabilizers tribasic whether to make an environmental impact assessment of environmental pollution .
In general tribasic lead sulfate production process, waste mainly from lead dust and lead ions in wastewater, dust pollution comes mainly from feeding port , mill outlet , wastewater pollution from lead acetate containing a small amount of soluble waste . H-1 of tribasic lead sulfate production process , including the non-toxic , inert filler dispersion inverted solution, then adding soluble lead salts , under the action of the n-butyl stearate  polar molecules to coat the inert filler , solid-liquid separation and drying packaging derived products. This technology and traditional production of three salt , a decrease from the pulverizing step , one of which is important to reduce contamination. H-1 reproduction in three salt water , but the reaction with the conventional production of three different salts , lead  carbon black acetate without formation of carbonate ions in water , with water can be combined to generate Pb + ions lead carbonate precipitate. Because of lead carbonate solubility product of only 5 * 10-13 . Solubility is very small , so the low levels of lead in water , the water treatment plant to generate funding for heavy metal wastewater treatment water treatment plant , emission concentrations up to 0.8mg / L below .

Fluorescent Brightener - Introduction

Commonly known as white fluorescent brightener dyes, is a colorless and under UV irradiation can excite PVC lubricant  fluorescent organic compounds, it can improve the whiteness and gloss material. FWA about 15 kinds of basic structure types, nearly 400 kinds of structures. Widely used in papermaking, textile, detergent and other areas
FWA FWA is a fluorescent dye, or a known white dye, is a complex organic compound. Its characteristics are able to produce fluorescence excitation light rays, so that the  tribasic lead sulphate dye substances for similar fluorspar glittering effect, so that the naked eye can see very white substance to achieve whitening effect.
Fluorescent brighteners absorb the invisible ultraviolet light (wavelength range 360-380 nm), is converted to longer wavelength visible light blue or purple, which can compensate for  liquid stabilizer unwanted matrix yellowish, while reflecting incident than the original in the wavelength range of 400-600 nm more visible, so that the products appear whiter, brighter, more vivid. In daily life, many opportunities for contact with fluorescent agents.

PVC impact modifier types Introduction

PVC impact modifier and sometimes also from the plasticizing effect , it can also be seen as a plasticizer for PVC resins and impact modifiers are the following : ( 1 ) chlorinated polyethylene (CPE ) is the iron oxide black  use of HDPE in the water phase of the powdery product by suspension chlorination , so as to increase the degree of chlorination of HDPE original crystals become amorphous elastomer. Used as a toughening agent C? E, containing 25-45 % amount is generally C1 . CPE wide source of low price, in addition to a toughening effect , but also has a cold resistance, weather resistance , flame resistance , and chemical resistance . At present in China is dominated by CPE impact modifiers , especially in the production of PVC pipes and profiles , most plants use CPE. Generally added in an amount of 5-15 copies. CPE can be used in conjunction with other plasticizer , such as rubber , EVA , the effect is better, but even in aging rubber additives .
(2) ACR is methyl methacrylate , acrylate monomers , ACR is best developed in recent years, impact modifiers , which can increase the impact strength of the material several times. ACR core-shell structure is an impact modifier , methyl methacrylate - ethyl acrylate composition of the shell polymer , crosslinked acrylic or butyl rubber elastic body is formed as the core of the particle distribution of the inner segment . Particularly suitable for outdoor use PVC plastic products, impact-modified PVC plastic window profiles used in the ACR as impact modifiers and other modifiers processing performance compared with the smooth surface, good aging resistance , high strength welding angle characteristics, but the price CPE, high 1 /3. Common foreign brands such as K-355, the general amount 6-10 copies. The current domestic production of the manufacturers ACR impact modifier fewer manufacturers use less.
(3) MBS is methyl methacrylate , butadiene and styrene copolymer of the monomers . MBS between the solubility parameter of 94-9.5 , with PVC solubility parameter close, so when the good compatibility with PVC , its most important feature: After adding PVC products can be  tio2 anatase made transparent . Generally added in PVC 10-17 parts of PVC , the impact strength can be increased 6-15 times, but the MBS in amount more than 30 parts , PVC impact strength decreased. MBS itself has a good impact resistance , good transparency , light transmission rate of 90 %, and to improve the impact resistance while other properties of the resin , such as tensile strength , elongation at break little effect . MBS higher prices , often with other impact modifiers, such as EAV, CPE, SBS , etc. and use . MBS poor heat resistance , weather resistance , not suitable for long-term outdoor use made ​​products, generally do not do plastic doors and windows profile production impact modifiers .
(4) SBS is a styrene -butadiene- styrene block copolymers, also known as thermoplastic rubber, thermoplastic elastomer part , the structure can be divided into star and line two kinds. SBS ratio of styrene to butadiene is mainly 30 /70, 40 /60 , 28 / 72 , 48/ 52 several. Mainly used as HDPE, PP, PS impact modifiers in an amount 5-15 parts . SBS primary role is to improve the low temperature impact resistance . SBS poor weather, not suitable for long-term outdoor use made ​​products.
(5) ABS is a styrene ( 40% -50 % ) , butadiene ( 25% -30 % ) , acrylonitrile ( 25% -30 % ) terpolymer used mainly plastic , PVC is also used impact modified , low-temperature impact modifiers also very effective. ABS is added in an amount of 50 parts , PVC , the  PVC heat stabilizer impact strength can be quite pure ABS . ABS is generally added in an amount of 5-20 parts , ABS poor weather , unsuitable for long-term outdoor use products, generally do not do plastic doors and windows profile production impact modifiers .
(6) EVA is an ethylene vinyl acetate and acid copolymer, vinyl acetate changed into a crystalline polyethylene , vinyl acetate content of a large difference , and the different refractive index EVA and PVC , transparent products is difficult to obtain , therefore , often the EVA resin and used with other impact . EVA dosage of 10 parts or less .

stearate, zinc metal cold extrusion

 Zinc stearate in the metal cold extrusion processing applications
Cold extrusion is a precision plastic volumetric forming technology is an important component. Cold extrusion is in the cold state of the metal
Blank into a mold cavity, the  Diethylene glycol dibenzoate strong pressure and a constant speed under the action of forcing the metal is extruded from the mold cavity,
To achieve the desired shape and size, and a certain mechanical properties of extruded member.
Currently, cold extrusion technology has been in fasteners, machinery, instruments, electrical appliances, light industry, aerospace, marine, military and other industries
Sector wide range of applications. Specific products such as filter, electric fuel pump housings, capacitor housings, aluminum bottle, cosmetic
Commodities aluminum cylinder, bullet shell, the current auto parts, 30% to 40% parts are manufactured by cold extrusion process.
Currently available for cold extrusion of metal materials: lead, tin, silver, aluminum, aluminum alloy, copper and oxygen-free copper (T1,
T2,, brass, bronze, nickel, zinc and cadmium zinc alloy, iron, carbon steel, low alloy steel and stainless steel. This
In addition, some of the titanium and titanium alloys, tantalum, zirconium, and Kovar alloy, also can be cold extrusion, even bearing steel
GCr9, GCr15 and HSS W6Mo5Cr4V2 also be a certain amount of deformation of cold extrusion process.
Cold extrusion, metal materials produced severe plastic deformation, the unit squeeze a lot of pressure, especially in cold extrusion of steel, the most
Large unit extrusion pressure up 2500Mpa. In such a high unit pressure, if no good lubrication, steel bad material
The particles will be welded together with the mold cavity caused severe scratching the surface, making the extrusion pressure increased dramatically, so that the mold
Greatly reduced service life or even rupture. Lubrication is directly related to product quality and the tool life, determine extruded into
Defeated.
So the use of a good and reliable lubrication of cold extrusion method is very important. Lubricants currently used for a liquid
(Such as animal oils, vegetable oils, mineral oil, etc.), there are solid (such as zinc stearate, sodium stearate, graphite, etc.)
They may be used alone, or in combination.
Lubricant mainly in: 1. Reduce friction between the billet and the mold; 2. Reduce mold wear, to mention
High mold life; 3. Improve the quality of products. (1) cold forging lubricants: For forging, now more into
Successful lubrication method is phosphating metal blank surface saponification treatment. The so-called "phosphate" is to use chemical methods
Zinc surface of a metal material and the porous iron phosphate film. The film thickness is generally 10-25μm, the friction
Coefficient is very low. Phosphate film is firmly bonded to the surface the metal billet with a certain plasticity, to a certain extent with gold
Are deformed together, this layer of porous film lubricant can be stored in the extrusion, the mold can serve to isolate the blank
The role of the metal deformation and reduce friction between the mold. The so-called "saponification" is to use fatty acids as soaps Run
Slip agents, so that the zinc phosphate coating with a chemical reaction treatment of zinc stearate lubricant.
Because phosphate - saponification treatment processes numerous long processing time, phosphate strict quality requirements, while the phosphate waste on the ring
Environmental pollution, and  antimony flame retardant thus the world are seeking new ways to replace the lubricating phosphating - saponification process.
Aqueous zinc stearate as a lubricant with good extrudability, extension, adhesion, lubricity
Its safety non-toxic environment pollutant emissions, successfully replaced phosphate - saponification treatment process (degreasing rust - water cleaning - acid
Wash - water cleaning - phosphate - water cleaning - drying - saponification - dry), to meet the ferrous metal cold forming for lubrication
Demanding. And once completed: Surface treatment - water heating - dipping the agent - drying and other processes. Applicable
Implied degree, deformation rate, the surface of the workpiece processing complex, effectively ensuring the accuracy of product processing, improve workpiece
Surface quality, maximum protection of the mold surface, to extend the life of the mold. Thin lubricant film formed single
Parts lubricated, low cost, cost than phosphate - saponification cost savings of 30% to 45%.
Water-based stearate lubricant characteristics
Brushing the surface of the workpiece after the formation of a lubricating film polymer workpiece even withstand repeated cold extrusion, cold stamping, cold
The drawing forming, the lubricating film can be firmly attached to the workpiece surface, and with the extension of the extension of the surface, do not need
Times brushing. Especially when applied to extension degree, deformation rate, complex workpiece surface, which is characterized more
Obvious.
Product Benefits
A, four outstanding advantages
1, completely replace phosphate - saponification process
Without phosphate, zinc stearate lubricant water after brushing the surface of the workpiece firmly attached lubricating film can then be
Direct cold forming, simplifying the process, improving the efficiency and reduce the cost.
2, to solve the many problems grease lubrication
Aqueous zinc stearate lubricant to the workpiece firmly attached to the rough surface of the lubricating film is formed, can solve the conventional grease
Easily lead to the workpiece after forming scattered pressure is not good, wrinkling, burst phenomena and mold strains, nodulation phenomenon.
3, once painted, cold-molding process can be repeated
Aqueous zinc stearate lubricant lubricating film formed in the surface of the workpiece has an extension extending characteristics of the workpiece
Before processing brushing once, after three to five times without further processing are brushing, simplifying the process, improve efficiency, reduce
Lower the  carbon black cost.
4, particularly suitable for extension of large, deformation rate, curved complex parts
Aqueous zinc stearate lubricant is formed in the surface of the workpiece having a lubricating film which extends extension properties, particularly suitable for
For the extension degree, deformation rate, the complexity of the workpiece surface.
B, other general advantages
1, the aqueous zinc stearate small size, can effectively ensure accuracy, improve surface finish and product quality.
2, to reduce machine wear and extend tool life.
3, expanding the workpiece material selectivity.
4, reduce the pressure to save energy.
5, reduce costs and increase efficiency.
6, the water-soluble nature stearate, making easier to remove surface residue.
6, safe non-toxic and pollution-free, there is no emissions and emissions of sewage treatment problems, relieve sewage treatment
Expenses and troubles.
Water stearate can also be applied to drawing, pressure-, stretching and other metal products processing the lubricating treatment. Pre-Market
King is very broad.
I was doing aqueous stearate, the main research market applications, there is need to beg for PM samples.

characteristics

Pigments usually have the following properties:
Color. Color pigment is a selective absorption of the visible light and scattering pigment,
 Acrylic paint
In natural light conditions, showing yellow, red, blue, green and other colors.
Tinting strength. The  ability to absorb the incident light colored pigment. Can be equivalent to the standard sample coloring pigments relative percentage.
Hiding. In the film-forming material covering the substrate surface color capability. Used to cover one square meter area contained in paint pigment expressed in grams.
Lightfastness. Under certain light pigment colors maintain its original performance. System generally use eight said eight best.
Weatherability. The pigment in a natural or artificial climatic conditions, to maintain its original performance capability. Generally use five system, said five best.
Volatiles. Mainly refers to the water, generally shall not exceed 1%.
Oil absorption. Means to form a homogeneous mass 100 g pigment refined required grams of linseed oil, with oil by a small amount of good oil absorption of the pigment particles have a specific surface area and structure.
Water soluble. Pigments containing water soluble substances, in order to account for the quality of the pigment expressed as a percentage. Paints with paint, water-soluble material which normally control in 1% or less.

pigment performance characteristics

Color. Color pigment is a selective absorption of the visible light and scattering pigment,
 Acrylic paint
In natural light conditions, showing yellow, red, blue, green and other colors.
Tinting strength. The yellow iron oxide  ability to absorb the incident light colored pigment. Can be equivalent to the standard sample coloring pigments relative percentage.
Hiding. In the film-forming material covering the substrate surface color capability. Used to cover one square meter area contained in paint pigment expressed in grams.
Lightfastness. Under certain light pigment colors maintain its original performance. System generally use eight said butyl stearate  eight best.
Weatherability. The pigment in a natural or artificial climatic conditions, to maintain its original performance capability. Generally use five system, said five best.
Volatiles. Mainly refers to the water, generally shall not exceed 1%.
Oil absorption. Means to form a homogeneous mass 100 g pigment refined required grams of linseed oil, with oil by a small amount of good oil absorption of the pigment particles have a specific surface area and structure.
Water soluble. Pigments containing water soluble substances, in order to account for the quality of the  PVC heat stabilizer pigment expressed as a percentage. Paints with paint, water-soluble material which normally control in 1% or less.

Comparison of plastics flammability rating

A total of 12 kinds of UL94: HB, V-0, V-1, V-2, 5VA, 5VB, VTM-0, VTM-1, VTM-2, HBF, HF-1, HF-2.
UL94 flammability grade is the fluorescent brightener  most widely used plastic material flammability standards. It is used to evaluate the material's ability to be extinguished after ignition. According to combustion speed, combustion
Time, anti-drop capabilities, and can have a variety Bubble whether combustion evaluation method. Each test material according to the color or thickness can get a lot of value. When selecting a product
Material, its UL rating should meet some plastic parts wall thickness requirements. UL rating should be reported together with the thickness value, and not only the thickness of the UL rating report is
Enough.
Plastic flammability rating by the HB, V-2, V-1, V-0, 5VB to 5VA of incremental:
HB: UL94 standard lowest level of flame retardant. Requirements For 3-13 mm thick sample, the combustion speed is less than 40 mm per minute; less than 3 mm thick sample,
Burning speed is less than 70 mm per minute; or signs to 100 millimeters off.
V-2: the sample twice 10 seconds combustion test, Yu & Yu burning flame extinguished in 60 seconds. Drip particles can ignite cotton.
V-1: the two samples after 10 seconds burning test, Yu & Yu burning flame extinguished in 60 seconds. Dripping particles can not ignite cotton.
V-0: the two samples after 10 seconds burning test, Yu & Yu burning flame extinguished in 30 seconds. Dripping particles can not ignite cotton.
5VB: five times for 5 seconds the  PVC stabilizer for pipe sample combustion test, Yu & Yu burning flame extinguished in 60 seconds. Dripping particles can not ignite cotton. For the bulk sample is allowed to be burn.
5VA: five times for 5 seconds the sample combustion test, Yu & Yu burning flame extinguished in 30 seconds. Dripping particles can not ignite cotton. For the bulk sample does not allow burned
Wear.
The wire UL1581 combustion:
1, VW-1: vertical burning test (UL wire flame rating)
2, FT1: vertical flame test;
3, FT2: horizontal flame test;
4, FT4: vertical flame test;
5, FT6: horizontal flame and smoke tests. (FT class combustion level is CSA standard wire flame rating)
These levels:. VW-1 and FT1 same grade. FT2 most easily passed, the lowest level. (FT6> FT4> FT1> FT2);
VW-1 strictly in FT1, both of which are vertical burning criteria: 1. Burn marks (kraft) more than 25% can not be carbonized; 2.5 times of 15 seconds burning continued
Burning time can not be more than 60 seconds; 3. Flaming droplets can ignite cotton; VW-1 requirements to meet 1,2,3; FT1 only required to meet the 1,2
For wire industry:
To UL 94 V-2, V-1, V-0, 5VA, 5VB assessment is wire the materials used, the test with the test material to another sample of the development of standards, not on the wire identification.
VW-1 VW -2 FT-1 FT-2 appraisal from the  Acrylic impact modifier cable itself, the test is passed, you can identify the corresponding level on the wire.
Wire with UL94 flame retardant are two entirely different things, an analogy of an insulating material through UL94 V-0, but not necessarily be able to pass VW-1;
Another insulating material is flame retardant UL94, and wire flame retardant requirements generally in UL758 62 1581 on; different objects;
Therefore, V-0 V-1 UL94, etc. are not the inside of the flame retardant electric wire; the AWM wire is not printed on the "V-0"!
VW-1/FT1 with UL94 V0 flammability test of the device there is a big difference:
1, the flame height and temperature of the type
2, the test traffic is used for different methane
3, back pressure is different methane
4, the combustion chamber volume is also different: VW-1 requires more than 4 cubic meters, while more than 0.5 cubic V0 can only require
5, the combustion is also different times
6, the combustion results: V0 Records residue burning time, and VW-1 then do not!
But UL94 5V level in combustion and combustion VW-1 test conditions and test methods almost close!

plastic processing aids PPA prices

 PPA2030 containing 99% active ingredient, free-flowing white powder 25 mesh. This product is used at a very vegetable stearic acid  low addition amount (50-800ppm) to improve the processing performance of the polyolefin and do not affect the physical properties of the resin itself, it will not affect the adhesive products, printing and sealing performance. For mLLDPE, LLDPE, HDPE, EVA and other polyolefin resins. Product form of white or light yellow free flowing powder
Application
Blown film, cast film, hollow products
Product Features
- Eliminate melt fracture and  magnesium hydroxide improve product surface finish, transparency
- To reduce or eliminate precipitates nose, extending continuous production time
- Increase the proportion of LLDPE formulations, reduce costs, improve quality
- Maintain the original back-pressure conditions, improve the productive capacity of the device
- Pigments and resins to improve compatibility, improved black mother carrying capacity and carbon black masterbatch brightness.
Processing Guide
PPA in the resin dispersion largely determines the results, it is recommended to use a twin screw extruder made of 2-3% masterbatch added in the amount added at the final destination extruded resin. Depending on the device will be used for the first time, the base material and  chromium oxide the shear rate and other circumstances onset time of 20-60 minutes. Long-term continuous use equipment containing PPA 2030 does not exist onset time.

PVC heat stabilizers affect the transparency of several factors

1, the refractive index of the stabilizer
PVC resin, heat stabilizer and 1.52 to 1.55 of the refractive index of the visible light are the  chromium oxide same or similar, then the better the transparency of PVC products, the transparency is low and vice versa.
2, stabilizer molecules (molecules) of linear length
Heat stabilizer molecule (or molecules) linear length is less than 400 ~ 735nm wavelength of visible light refracting fewer higher degree of transparency, whereas less transparent.
3, a heat stabilizer in PVC, "solubility", ie compatibility
The so-called compatibility of two or more substances refers to the mutual affinity when mixed. Good compatibility is possible to achieve dispersion of the molecular level. Thermal stabilizer in the PVC stabilizer for pipe  molten state has good compatibility with PVC resin. Do not form a two-phase, that is no interface or the interface is not obvious, less refracted light, PVC products, higher transparency. Liquid stabilizer than the corresponding solid metal soap good compatibility in PVC, the linear molecule has a smaller length, and thus the higher the transparency of the PVC.

Use aluminum hydroxide flame retardant use

Use of aluminium hydroxide:
Various aluminide materials, plastics, rubber and other flammable materials flame retardant additives, paper, toner surface, paint, toothpaste base, catalyst carrier, purifying agent, fluoride salt, drying, various types of molecular sieve, pharmaceutical industry, artificial agate, glass Marseille

G, construction materials accelerator fillers.
Aluminum hydroxide to improve the activity of the resin with aluminum hydroxide and workability, so that both the flame and filling double performance, which in plastics, rubber and other advanced composite materials to add this product, the product has a flame unfair smoke effects, and anti-leakage, anti-

Arc, wear resistance increased. It can be widely used in electrical cables, rubber, wire and cable insulation, sheathing layer, insulation materials, conveyor belts, etc.

Zinc borate Applications

Overview of zinc borate
Boron-based flame retardant is one of the earliest use of flame retardants, inorganic flame retardants are also important, which is characterized by good thermal stability, low toxicity, smoke, and other flame retardant compound works well, after adding combustion of materials significantly reduced smoke density, and a halogen-containing flame retardants, ozone

Of two antimony compound effect is obvious.
Application of zinc borate
Used in PVC cable, PP, PE, EVA, unsaturated polyester, epoxy resin, natural rubber, synthetic rubber, chloroprene rubber, expandable fireproof coating.
1 Zinc borate can be used as antimony oxide or other halogenated flame retardants multi-functional synergistic additives can effectively improve the flame retardancy and reduce the generation of smoke when burned, and you can adjust the rubber products, chemical, mechanical, electrical and other aspects of performance.
(2) halogen-containing flame retardants such as partial or complete substitute green, zinc borate flame retardant, is being widely used in plastics and rubber direct processing, such as PVC, PE, PP, reinforced polyamide, polyvinyl chloride resin, polystyrene , epoxy resin, polyester resin, vinyl and natural

Rubber, styrene butadiene rubber, chloroprene rubber. Can also be used in paper, fabric, decorative panels, floor coverings, wallpapers, carpets, ceramic glazes, fungicides, paint production in order to improve flame retardant properties.
3 based on other properties of zinc borate, but also for preservation, far-infrared absorption, timber pest biocontrol treatment and other fields.

Zinc borate brief

Micro-crystalline zinc borate as a white powder, non-toxic, insoluble in water and common organic solvents, slightly soluble in water, soluble in dilute acid, poorly soluble in sodium hydroxide, soluble in acid and alkaline ; thermal stability, fine grain size, dispersion and strong, the main feature is flame retardant,

Smoke suppression. Can also be used alone as a flame retardant material with a variety of flame retardant compound used with improved efficiency, and the price is cheaper, less dosage, can significantly reduce unit production costs and improving economic efficiency.
Range widely used in plastics, rubber, paint, ceramics, lubricants, wire and cable, electrical insulating materials, electronic products shell, etc., depending on the product and the flame retardant requirements can be fully or replace expensive 50-80% oxide antimony. In the fire-retardant coatings

zinc borate flame retardant as an intumescent fire retardant materials can replace antimony white, the coating has a good fire retardant effect. But also as an alternative to toxic zinc chromate primer rust paint. Zinc borate or radial tire rubber conveyor belts and special fire-retardant materials. High temperature

At 300 degrees lose crystal water. Loss on ignition 14.5 ± 1.
Application:
1 Zinc borate can be used as antimony oxide or other halogenated flame retardants multi-functional synergistic additives can effectively improve the flame retardancy and reduce the generation of smoke when burned, and you can adjust the rubber products, chemical, mechanical, electrical and other aspects of performance.
(2) halogen-containing flame retardants such as partial or complete substitute green, zinc borate, is being widely used in plastics and rubber direct processing, such as PVC, PE, PP, reinforced polyamide, polyvinyl chloride resin, polystyrene , epoxy resin, polyester resin, vinyl and natural

Rubber, styrene butadiene rubber, chloroprene rubber. Can also be used in paper, fabric, decorative panels, floor coverings, wallpapers, carpets, ceramic glazes, fungicides, paint production in order to improve flame retardant properties.
3 based on other properties of zinc borate, but also for preservation, far-infrared absorption, timber processing and other fields of insect biocontrol

The physical properties of titanium dioxide

The physical properties of titanium dioxide: the relative density, melting point and boiling point, dielectric constant, conductivity, hardness, moisture absorption,

thermal stability.
Relative Density
The relative density of the titanium dioxide with the crystal morphology, particle size, chemical composition, in particular the amount of the size and surface

treatment, in the manufacturing process, with the calcination temperature and calcination time to improve the growth of the extension.
Melting and boiling points
As tio2 anatase type titanium dioxide and a plate at a high temperature are converted into rutile, their melting point and boiling point does not actually exist.
Permittivity
As a high dielectric constant of titanium dioxide, it has excellent electrical properties. Under the effect of external electric field, the interaction between ions,

forming a very strong electric field locally. In the electric field effect, the ion outer electron orbits strongly deformed, ion itself also will be a great

displacement. Crystalline titania contained trace impurities and so a great influence on the dielectric constant.
Conductivity
Performance of titanium dioxide having a semiconductor, the conductivity increase with temperature increases rapidly, but also very sensitive to hypoxia.
Hardness
Hardness and crystal structure of titanium dioxide on, in the production and product purity and calcination temperature, high temperature sintering is easy, hardness

will increase. Because of the hardness of rutile titanium dioxide, difficult pulverization nozzle orifice and thus the higher the wear, the wear of the rolls is large,

it unsuitable for chemical fiber matting and gravure printing.
Hygroscopic
Although the hydrophilic titanium oxide, but not too strong moisture absorption, moisture absorption of anatase larger than rutile. Hygroscopicity titania surface

treatment with the nature of the treatment agent, but also on the size of its surface area have a certain relationship, large specific surface area is slightly

hygroscopic.
Thermal stability
Titanium dioxide is the thermal stability of compounds of intense heat under vacuum there is a slight loss of oxygen phenomenon, accompanied show dark blue, the

reaction is reversible, the cooling will be restored to the original white.