PVC processing aid and the use of its characteristics

ACR acrylic esters (Acrylics) Abbreviation is generic acrylic ester series modifier , based acrylic ester polymer of copolymer . ACR is a copolymer of methyl methacrylate and acrylic acid ester as  WSD Calcium stearate a white flowable powder. Depending on acrylic esters , ACR different properties and uses the proceeds of its wide range of applications. ACR as processing aids , plasticizers can significantly shorten the time to accelerate melting and promote plasticized , extruded products can make to improve the balance of torque , making it even plastics ; pair of rolled products , adding ACR to overcome the surface wrinkles , help roll  WSD Plastic impact modifier package of materials , reducing air bubbles ; for vacuum forming products , adding ACR to improve melt extensibility overcome melt fracture phenomenon , easily deep drawing , and make uniform product thickness . From the looks of the article , ACR can significantly improve the surface gloss of products, to make products look smooth and delicate. The processing aids wide range of applications , in addition to rigid PVC products, the semi- rigid and soft PVC products, PVC products all have the effect of improving  WSD stearic acid processing performance for applications that require good weather resistance of opaque PVC products such as pipes, construction material ( siding, doors and windows profiles, pipe fittings , blinds, rain gutters , etc. ) as well as injection molding, blow molding products.

There are many kinds of plastic processing aid methods

About plastic extrusion, injection molding, blow molding, rotational molding, casting, dip and other plastic molding process, depending on the specific choice of materials and products, the advantages and disadvantages of hard to say.
  Here I am with PE plastic processing methods simply lower, PE available a wide manufacturing different processing method. As the main raw material ethylene, propylene, 1 - butene, hexene copolymer, under the action of a catalyst, using a slurry polymerization or gas phase polymerization process, the polymer obtained by flash separation, drying, granulation, etc. processes, was
Uniform particles have finished. Including such sheet extrusion, film extrusion, pipe or profile extrusion, blow WSD Plastic impact modifier  molding, injection molding and rotational molding. Extrusion: grade for extrusion production generally has a melt index of less than 1 and the width to wide MWD. In the process, the availability of suitable MI low melt strength. Broader MWD is more suitable for extrusion grades, because they have a higher production speed, lower the die pressure and melt fracture reduction trend. There are many PE extrusion applications, such as wires, cables, hoses, tubes and profiles. Pipes for natural gas applications ranging from a small section of yellow tube to 48in diameter thick-walled clarinet for industrial and municipal pipes. Alternative to large diameter hollow wall  WSD zinc stearate made of concrete pipe used as rainwater drains and other sewer pipelines rapidly.
Sheet and thermoforming: Many large picnic-type freezer thermoforming lining is made of PE, with toughness, light weight and durability. Other sheet and thermoformed products include fenders, tank linings, disc bowl guard, transport boxes and cans. The rapid growth of a mass-sheet applications are mulch or bottom in the village, which is based MDPE with toughness, chemical resistance and impermeability. Blow: These range from equipment bleach, oil, detergent, milk and a bottle of distilled water into WSD PVC stabilizer  a large refrigerator, car fuel tank and the canister. Blow molding grade characteristic indicators, such as melt strength, ES-CR and toughness, and the sheet for thermoforming applications level
Similar, it can be used with similar grade.

Use the principle of PVC processing aid

In industrial production, in order to improve production processes, improve product quality and yield, or to give the product of a specific application performance by adding auxiliary chemicals. Also known as the additive. However, as an important component of the product matrix, the product shape, structure, performance of large doses have a significant impact of additional material, generally not included in the scope of aid. Additives wide range of applications, usually re-dubbed the role of one pack stabilizer  object names, such as polymeric additives, water treatment, metal surface treatment agent. There are some common additive selection considerations, such as: ① use of the additive requirements. Additives appearance, odor, contamination resistance, durability, electrical properties, weather resistance and so the use of direct impact products. ② processing conditions additives adaptability. ③ durability additive. Loss additive mainly through evaporation, extraction and migration pathway 3, the species must be selected appropriately according to the environment and the article processing conditions. ④ compatibility with polymer additives. Comprises mixing in impact resistance and stability of each may be a problem between them. ⑤ additive toxicity. Food and drug packaging materials, water pipe, medical equipment and other polymer materials, products, their health mainly depends on additives used. ⑥ synergistic and additive effect between proposition. If chosen appropriately, the mutually reinforcing, and can reduce the total amount of additives. The use of additives principles:
The current provisions of the international system can be divided into two, one is to allow the use of additives "exhaustive" "whitelist" lists, and the other is listed aids disabled "disabled list." After years of practice, "disabled list" to be found there is a big drawback: the lack of new substances binding. Plastic profiles Promoters
Additives a plastic profiles: impact modifiers, such as the production of plastic profiles without impact modifier, plastic profiles will be very brittle, a little collision, easily broken. Commonly  chromium oxide Titanium dioxide rutile used in the production of plastic profiles impact modifier modifier consists of the following three categories: chlorinated polyethylene, polyacrylate, ethylene - vinyl acetate copolymer. Plastics Additives two sections: heat stabilizers plastic profiles are heat-sensitive plastic, so plastic profile production machining, heat stabilizers is essential. Metal heat stabilizers in PVC can absorb decomposition of HCL, it can slow down the rate of decomposition of plastics and extended decomposition time, the production of plastic profiles for the most commonly used compound lead salt, high-efficiency thermal stability, low prices. Plastics Additives three  sections: the main processing aid processing aids plastic molding  PVC lubricants process in order to improve the performance improvements and the development of a class of additives. Plastic profile processing temperature and decomposition temperature relatively close, poor mobility, easy to stick on the device coking, and therefore the production of plastic profiles need a certain amount of processing aid to overcome the defects of plastic profiles itself.

Environmental plasticizer selection and performance and characteristics

Environmental plasticizer selection:
Different design requirements of PVC products use different nature plasticized system, and the ideal plasticizer should meet the following requirements. 1, high plasticizing effect, good compatibility, low volatility.
2, migration resistance is small, with time shift delay products, or other materials do not migrate to the surface of the contact.
3, and good resistance to extraction, contact with products like oil or aqueous solvent, a plasticizer does not spread to occur.
4, good low temperature performance, low temperature without losing its products in flexibility. 5, good insulation properties. 6, good mechanical properties 7, odorless, colorless, non-toxic 8, good flame retardant properties. 9, anti-fungal properties. 10, low WSD Metallic stearate  prices. Plasticizing effect really Maoyou, plastic corporate trust products. A, name: chloromethoxy fatty acid ester. Second, the formula: C20H37CI3, a molecular weight of 463 Third, technical indicators 1, Appearance: pale yellow oily liquid. 2, density (20C) :1.155-1 .175 3, Flash Point: (open) ≥ 170 ℃ -195 ℃. 4, heating loss (125C ± 1C.3h)% ≤ 0.4. Fourth, the performance and characteristics of the product is the company under the guidance of experts, after years of painstaking research the success of a new type of plasticizer, which is made from natural oils and alcohol transesterification reaction, then the reaction of a class of chlorinated has a high molecular weight, good compatibility with PVC, excellent WSD Aluminum hydroxide  plasticizing effect, fire resistant, non-toxic, environmentally friendly compound plasticizers. Since both the product ester structure, octyl dimethyl substitution o stupid butyrate as a plasticizer, while containing chlorine can be replaced by paraffin, improve flame retardancy and electrical insulation.
Fifth, products and applications: Environmental plasticizer compatibility with PVC resin than DOP, DOA, DBP, and can be widely used in environmental protection pvc products, such as leather, PVC cable, plastic film, plastic sandals, foam sandals, doors and windows  WSD Stabilizers for pipe and window seals, PVC profiles, soft board, all kinds of soft, hard pipe, decorative materials, rigid foam board and all use of plasticizer products, has a wide range of uses, and ultimately to achieve lower production costs purposes.

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.

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.

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

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 .

plasticizer simple description

Plasticizers ( English : Plasticizer), also known as a plasticizer, a plasticizer , an increase in softness of the material or liquefied additive material . Add object contains plastic , concrete , drywall materials, cement and gypsum and so on. The same kind of plasticizing agent often  fluorescent brightener used in different objects , but its effect is often not the same. Plasticizer range up to hundreds of kinds , but the most commonly used means one group of compounds known as phthalates . According to statistics, in 2004 the world's plasticizing agent market, totaled about 550 million tons and 6,000,000 tons moving toward . Add a plasticizer based plastics used functions in different environments, manufactured with a variety of toughness and softness , gloss finished , which required more soft plastic products the more plasticizer added . General often use plastic wrap , one is without additives PE (polyethylene ) material , but its viscosity is poor ; Another widely used is PVC (polyvinyl chloride ) plastic wrap, a large number of plasticizers to make PVC material becomes soft and increases viscosity, very suitable for fresh food packaging.
Use concrete plasticizer ( superplasticizer ) , can increase the workability of the mixture is not easy to produce cellular facilitate construction , thereby reducing the water content ratio , increase the intensity . The wall material can be increased by adding a mixture of plasticizers liquefaction degree , so they do not add too much water , can reduce the time required for drying the wall .
Basic categories
Internal plasticizer
Internal plasticizer is actually part of the  PVC profile stabilizer polymer . Plasticizers are generally within the polymer during the polymerization of the second monomer introduced . Since the second monomer in the polymer molecular structure , reducing the polymer molecule chains are isotactic , which reduces the crystallinity of the polymer chain . Such as vinyl chloride - vinyl acetate copolymer softer than vinyl chloride homopolymer . The use of plasticizers within the temperature range is relatively narrow , and must be added during the polymerization , so use less internal plasticizer .
External plasticizer
External plasticizer is a low molecular weight compounds or polymers , it is required to add the polymer plasticized , increase the plasticity of polymers . External plasticizer is generally a high boiling point of less volatile liquid or low melting point solids , and the  stearate magnesium vast majority of organic compounds are esters . Usually they do not react with the polymer , and the interaction of the polymer mainly in the swelling action of elevated temperatures , with the polymer to form a solid solution . External plasticizers production and a more comprehensive and easy to use, very wide application . Now people are referring to the general said plasticizer external plasticizer. Dioctyl phthalate (DOP) and dibutyl phthalate (DBP) are outside the plasticizer

application performance organic pigments

Organic Pigments Industrial Technology Development and other industrial technology, its applications continues to expand, higher demands , prompting the related technology to the magnesium hydroxide flame retardant  deeper direction. Organic pigments its requirements can be summarized as follows: ① gentrification products that meet the metal coating durability, weather fastness , heat resistance, solvent resistance, and resistance to migration performance and other requirements ; ② organic pigments dosage of , the development of specific applications performance -specific products, such as water , oil , easy dispersibility , high transparency , heat resistance, excellent migration resistance new special formulations , having a high purity crystalline form of certain special features of the organic pigment.
  Applications department requirements to promote the rapid development of organic pigment industry technology , from classical organic synthesis reaction unit ( such as halogenation, nitration , reduction, condensation, diazotization, coupling reaction ) , filtration, separation, drying, grinding process gradually penetrate multidisciplinary areas  iron oxide black such as solid state physics chemistry, morphology, powder surface chemistry, interfacial chemistry , solid solution and crystal chemistry , polymer chemistry and powder dispersion technology. Which highlights the research focus for the development of new varieties of structural pigments , colored crystal particle surface modification treatment technology, efficient pigment dispersion technology , organic pigments and commercial processing technology and application performance testing and evaluation. ( A ) the chemical structure of the pigment new breed was developed to improve the durability of paint , heat stability, resistance to weather fastness , solvent stability and resistance to migration performance ; bright shade , high tinting strength yellow, orange , red, purple and brown varieties to meet with performance dacron blue, green, copper phthalocyanine pigment to match the requirements. The principal means of synthesis of new heterocyclic structure of the pigment , a good Acrylic processing aid  molecular planarity . Symmetry , with a specific substituent , change the molecular polarity , can form intermolecular hydrogen bonds , to improve heat stability and resistance to migration . Based paint durability ( light resistance, weather fastness , heat stability , solvent resistance and migration resistance , etc. ) of the level classification , grade ( high ) , or organic pigments HOP HGP (HighPerformanceOrganicPigments; HighGradePignents), has not only excellent application fastness properties , and value-added products , is high. Undoubtedly increasing organic pigment product formulations to meet specific application areas , high-performance requirements, will be an important trend in the future .

[ FWA ] diamond fluorescence intensity grading

The fluorescence intensity of the diamond grading , the following is zakaly Xiaobian for you to collect relevant information , hoping to help you. Zakaly same diamond , cheap half. Zakaly jewelry electrocution 8 years, he used the Internet information technology to one pack stabilizer  optimize diamond jewelry supply chain , to overturn the traditional diamond sales model, drained the last drop of diamond profits . for the public to create a "low price", " high quality" , "credibility " shopping platform .
Approximately 50 % of the diamonds in the ultraviolet radiation will produce fluorescence, diamond fluorescence color, intensity of the diamond 's appearance ( body color ) have a certain influence , and sometimes even affect the price of diamonds , which is the fluorescence intensity of diamond grading significance diamond Fluorescence most common color is blue and white , followed by yellow and white , yellow, green , orange and other colors. above with moderate-intensity blue-white fluorescent colorless diamond will look more white, such as "Jager diamonds" strong blue- white fluorescent light yellow diamonds also available with yellow body color complementary , looks nearly colorless , improved color grade diamond if diamond yellow fluorescence , in any case will cause lower color grade diamond . too strong fluorescence also diamond will show hazy oily , reducing the transparency of the diamond , affecting the clarity of the diamond , such as the "Pre mier ¨ ultra Blue Diamond fluorescence also many jewelers to create a sense of mystery and surprise .1 fluorescence intensity of the fluorescence intensity level ( flourescence degree) is a diamond in the long visible under UV irradiation intensity level . China's " diamond grading " standard, the diamond 's fluorescence intensity level is divided into strong , weak , no four grades . CIBJO also put fluorescent level is divided into four grades . GIA is classified as strong , strong , weak , no five levels .2 fluorescence intensity of the Impact modifier for PVC  fluorescence intensity grading grading method is the use of visual methods in the long UV , compared to standard fluorescent intensity like stone, the fluorescence intensity of the diamond grading . fluorescence intensity of the sample (masterstone flourescence degree) refers to a set of calibrated fluorescence intensity level standard round brilliant cut stone like cobalt stone . usually consists of three components , in turn, representative "strong" , "medium" , "weak" three levels lower . following steps: ( a ) the fluorescent sample by strong, medium and weak order, from left to right in the ultraviolet fluorescent lamp placed equidistant black box . ( 2 ) open length ultraviolet light switches . ( 3 ) to be graded diamonds gripping tweezers , place the UV fluorescent obscura in comparison with the fluorescence intensity of the sample to determine the fluorescence intensity level .3 . fluorescence intensity level division rules
( 1) If the diamond to be graded higher than the fluorescence intensity of the fluorescence intensity of the comparative sample in the " strong '', still with the" strong " indicates the fluorescence intensity level of the diamond (2 ) when the classification of the diamond to be less than the fluorescence intensity of the fluorescence intensity of comparative sample in the " weak" , the use of " none" represents the level of fluorescence intensity of diamond (3 ) subject to a grading diamonds and a fluorescence intensity vs. the same sample , the level of fluorescence intensity of the fluorescence to be graded diamond intensity level . ( 4 ) to be graded diamonds fluorescence intensity between adjacent two contrast between samples , the lower -level representatives to be graded diamonds fluorescence intensity level . ( 5 ) the same fluorescence intensity of the diamond , the fluorescence intensity on there are slight differences. ( 6 ) in addition to the fluorescence intensity magnesium stearate  to be marked , the need to mark the fluorescent colors.
The fluorescence intensity of the diamond is a diamond grading report content , can not be compared with the color grading . Commercially, high color grade (H colors or more ) , high clarity (VS and above ) if diamonds have medium blue and white fluorescent its price is often lower than the non-fluorescent diamonds 1010 to 10%, the fluorescence is stronger, the greater the impact on prices , while slightly yellow diamond (I color less ) than if a medium blue and white fluorescent , can increase up to 4% weak fluorescence and low clarity diamond fluorescence little impact on prices . diamond prices with yellow fluorescence can often save 5 % to 10% , but the real diamond trade , few people put a fluorescent and non-fluorescent diamonds detailed separately . therefore fluorescence actual impact on diamond prices significance,

Metathesis reaction around the product to precipitate calcium stearate

Then filtered, washed with water, dried at about 90 ℃, derived products.
3 would 5.60g (0.1mol) of calcium oxide was suspended in 300mL, 55 ℃ hot water. Then 51.3g of chemical pure white foaming agent  stearic acid was dissolved in 350mL, 70 ℃ hot water, 0.75g of diethanolamine was added, stirred and emulsified. The emulsion has been prepared on the stearic acid was gradually added within 2h suspension of calcium oxide, and sufficiently stirred to form a white insoluble material is calcium stearate was filtered off and dried to give the product.
4 direct method equipped with  titanium dioxide a stirrer, a thermometer, 11:50 quantitative stearic acid and CaO, heating to melt slowly added under constant stirring catalyst H2O2, and evacuated, to control the reaction temperature 140 ~ 150 ℃, Reaction 1.5 ~ 2.0h. After completion of the reaction, the material was cooled and crushed to obtain the product. Reaction is as follows:
5 double decomposition method was dissolved in 20 times by mass of stearic acid in hot water, adding a saturated solution of caustic  pvc additive soda content, at about 75 ℃ saponification reaction of a dilute solution of sodium stearate. Then the calcium chloride content of 1074kg/m3 sodium stearate was added to the solution at about 65 ℃ metathesis reaction, the product to precipitate calcium stearate. Then filtered, washed with water, dried at about 90 ℃, ie finished...

PVC heat stabilizers Cultivars

PVC primary stabilizers are those have a stabilizing effect when used alone, the compound and the secondary stabilizer is an invalid who used alone with the primary stabilizer compounds Shique synergistic effect. Some primary stabilizer or between certain to choose between the main and auxiliary stabilizers act synergistically after use. First, the  PVC foaming board stabilizer base of the lead salt base lead salts are used in PVC earliest and most widely used of a heat stabilizer, alkaline, and it could be heated with PVC, HCl produced REACTED stability. From toxicity, stain resistance and product transparency point of view, lead salt is not ideal. But its stabilizing effect is good, inexpensive, it is still used extensively for cheap PVC extrusion and calendered products. Because it has excellent electrical properties and low water absorption, the PVC is widely used as electrical insulation products, albums and foam stabilizers. 1.1, tribasic lead sulfate (also known as tribasic lead sulfate) white powder, specific gravity 7.10, sweet, toxic; hygroscopic, non-flammable and corrosive. Insoluble in water, but soluble in hot ammonium acetate, wet decomposition of the light will change color. Index 2.1, and used as electrical insulation products stabilizer. 1.2 Dibasic lead phosphate which is a fine needle-like crystalline powder; specific gravity 6.1, sweet and toxic; 200 ℃ or so into a gray-black, 450 ℃ or so turns yellow. This product is not soluble in water and organic solvents, soluble in hydrochloric acid. Refractive index 2.25, with an antioxidant effect, is an excellent weather resistance stabilizers. Second, the metal soaps metal soaps also a widely used class of PVC heat stabilizer. In carboxylic acid barium, cadmium carboxylate, zinc carboxylate, carboxylic acid, or a mixture of elemental calcium use. Its stabilizing effect is due to it in the beginning of PVC molecular chain decomposition of the place where esterification. Stabilizing effect and the strength of the metal ratio of metal soap, a carboxylic acid type, and the existence of such formulations phosphite, epoxidized oils, the antioxidant synergists. Including cadmium and zinc soap soap greatest stabilizing effect. 2.1 Lead stearate which is a fine powder, is insoluble in water, soluble in hot ethanol and ether. Heated and dissolved in an organic solvent, and then cooling a gum. Case of decomposition of stearic acid and the corresponding lead salts, easy to damp. Has good lubricity, low melting point and that it has the excellent dispersibility. 2.2,2 - ethyl acetate, lead is soluble solvents and plasticizers. Often dubbed 57-60% mineral oil or plasticizer was sold. Widely used in foam blowing agent azodicarbonamide activator. 2.3 Lead salicylate which is a white crystalline powder, specific gravity 2.36, refractive index 1.76. Both PVC heat stabilizers and light stabilizers. 2.4, tribasic lead stearate is a white powder, specific gravity 2.15,280-300 ℃ decomposition, the case of high temperature above 100 ℃ caking. Soluble in ether, poisonous, non-flammable and polyethylene oxide  corrosive. Refractive index of 1.60. This product is good lubricity, good light stability, widely used in PVC formulations title. 2.5, dibasic lead phthalate white fine crystalline powder, specific gravity 4.5. Insoluble in common solvents. This product is weak, and its base portion and easy carbonation. Refractive index of 1.99. When a formula contains a plasticizer easily saponifiable stabilizing effect than tribasic lead sulfate. 2.6, three maleate salt of lead (tribasic lead maleate) yellowish fine powder, specific gravity 6.0, refractive index 2.08, toxic, non-flammable and corrosive, with good color stability, and eliminate unstable diene structure effect. 2.7, barium stearate fine white powder, barium content 19.5-20.6%, the proportion of 1.145, melting point 225 ℃ or more. Insoluble in water, but soluble in hot ethanol. Was heated and dissolved in an organic solvent, after cooling into jelly. Case of decomposition of stearic acid and the corresponding barium salt, easy to damp. Sulfur contamination must be avoided for the selection of the heat stabilizer is used when processed under high temperature lubricant. 2.8, Osmanthus barium
2.9, ricinoleic acid, which is a kind of barium yellow-white powder, mp l16-124 ℃, enabling products to obtain good transparency stabilizer. 2.10, a white fine powder cadmium stearate, cadmium content 16.5-17.5%, insoluble in water, soluble in hot ethanol, heated and dissolved in an organic solvent, a jelly after cooling, in case decomposed into stearic acid and the corresponding cadmium salt, easy to damp. Is required to have good transparency PVC heat and light stabilizers. 2.11, cadmium ricinoleate which is a white powder, mp 96-104 ℃, both heat and light stabilizers 2.12, calcium stearate fine white powder, insoluble in water, soluble in hot ethanol and ether. Case of decomposition of stearic acid and corresponding calcium salt, easy to damp. Is a non-toxic PVC stabilizers and lubricants. Generally not used alone, but often with soap zinc, magnesium soap or vice epoxy stabilizer used in conjunction. 2.13, castor calcium is a white powder, melting point 74-82 ℃, PVC with a non-toxic stabilizers. 2.14, zinc stearate fine white powder, insoluble in water, soluble in hot ethanol, turpentine, benzene and carbon black powder other organic solvents. Was heated and dissolved in an organic solvent, after cooling a gum. Case of decomposition of stearic acid and the corresponding zinc, easy to damp. Is a non-toxic PVC stabilizers and lubricants. 2.15, magnesium stearate white powder, specific gravity 1.07, melting point of pure 85 ℃, industrial mp l08-115 ℃. Slightly soluble in water, soluble in hot ethanol, the case of decomposition of stearic acid and magnesium. This is a non-toxic PVC stabilizers and lubricants, but also phenol and urea formaldehyde resin lubricant. Third, the composite stabilizer 3.1, liquids and liquid barium cadmium, barium cadmium zinc composite stabilizer such composite stabilizer is mainly used for the processing of soft PVC products, the basic components include: (a) barium salt - can be alkyl barium phenol 2 - ethylhexanoic acid, barium laurate, barium, barium benzoic acid and substituted benzoic acid, neodecanoic acid and barium. Barium salt complexes accounted 6-7% salt with cadmium ratio is about 2:1.32 (as metal, by weight, the same below). (2) cadmium salts - can be 2 - ethylhexanoic acid, cadmium laurate, cadmium, cadmium oleate, phenyl and substituted benzoic acid, cadmium, cadmium naphthenate, neodecanoate, and cadmium. Cadmium salt complexes about 3-4%. (3) zinc salt - may be 2 - ethylhexanoate, zinc laurate, zinc naphthenate, zinc neodecanoate, benzoic acid and substituted benzoic acid zinc. Accounts for the composite zinc 0.5-1%. (4) phosphite - may be triphenyl phosphite, diphenyl phosphite, an octyl diphenyl phosphite, a decyl phosphite, tris (nonylphenyl), etc. In the phosphite complexes about 15-20% (by weight), as a chelating agent. (5) Other - include minor amounts of 2,6 - tert-butyl-p-cresol, bisphenol A, nonylphenol and other phenolic antioxidants and ultraviolet absorbers, and a liquid paraffin, white oil, diesel oil, spindle oil mineral oil as solvent, and the need small amount of antifoaming agent such as a higher alcohol. Liquid barium cadmium zinc composite stabilizer because different composition, properties are also different. But is generally pale yellow to yellow clear liquid, specific gravity 0.95-1.02 at room temperature, the viscosity of less than 100 cps, freezing point at -15 ℃ or so. Liquid Ba Ba Cd, Zn and Cd, and similar liquids, has excellent heat and light stability; initial coloration is small, good transparency and color stability. Their stabilizing effect than solid composite soaps, therefore, may reduce the amount of, usually 2-3 parts, the dust does not occur poisoning, and completely dissolved in the plasticizer in the general, good dispersion, small tendency to precipitate. Wherein the liquid barium cadmium zinc early color than the liquid barium cadmium smaller. 3.2 Liquid Ba-Zn complexes are generally pale yellow to yellow-brown oily liquid, specific gravity of 1.0-1.1 at room temperature, good heat resistance, pollution from sulfur, with an epoxy plasticizer and used to increase the stabilizing effect on the hair foam agents are activation. 3.3, non-toxic liquid calcium zinc complexes of liquid calcium zinc stabilizer main ingredients are calcium stearate, castor oil, calcium, zinc stearate, castor oil, zinc and epoxy soybean oil, ultraviolet absorber. Liquid calcium zinc stabilizer off
Agents are generally more soluble in organic solvents used fewer carbon fatty acid calcium salts and zinc salts. Because of different compositions, varied in nature, usually pale yellow to yellow clear oily liquid at room temperature under a specific gravity of 1.0 to 1.05. It is non-toxic PVC stabilizer, mainly for food packaging films, containers, and foam stabilizer for leather. Fourth, organotin stabilizers organotin stabilizers are various carboxylic acids derivatives of tin and tin mercaptide, the main products are dibutyl tin and dioctyl tin compounds, which Dioctyltin countries as being more toxic stabilizer be used. Organotin primarily to stabilize rigid PVC products, especially those that require a superior transparency and thermal stability of the product. Of course, soft products can be stably, but because of its price is more expensive, it is generally not used. 4.1, dibutyl tin dilaurate is a pale yellow clear liquid, dissolved in a plasticizer and all industrial solvents, the toxic materials. It is the oldest organotin species, has excellent lubricity, transparency and weather resistance, resistance to sulfur pollution, but the heat resistance is poor. As the main products, soft transparent stabilizers, rigid transparent products used as lubricants. 4.2, dibutyltin maleate which is a white amorphous powder, melting and volatile vary with the degree of polymerization, between about 100-140 ℃. This product is toxic, a tear. Primarily used for high softening point and high impact strength rigid transparent products. Because no lubrication so often and dibutyl tin and used, the amount of 0.5-2. 4.3, bis (monobutyl maleate), dibutyltin light yellow transparent liquid, non-toxic (to allow the amount of 3 parts or less). This product has good weather resistance, transparency, and thermal stability preventing coloration does not occur sulfur pollution, commonly used in transparent PVC rigid products, the amount of 2.0-4.0 parts. 4.4, bis (isobutyl thioglycolate), di-n-octyl tin which is a pale yellow liquid, insoluble in water, soluble in esters, ethers, alcohols, aliphatic and aromatic hydrocarbons, chlorinated hydrocarbons and the major types of plasticizer . It is the main tin mercaptide species, the most commonly used one non-toxic organotin stabilizers for rigid transparent PVC (2-3 copies) and soft transparent PVC (1 copy). The disadvantage is poor weather, the smell would sulfur pollution, no lubrication. In addition, because it contains an ester group, so there is a certain degree of plasticization. 4.5, di-n-octyl tin dilaurate, which is a yellow liquid, 25 ℃ the specific gravity of 1.01-1.02, the refractive index of the viscosity 1.46-1.47,30 ℃ 60 centipoise. This product is non-toxic, good lubricity, mainly used for rigid transparent PVC food packaging materials, the amount of 1.5 parts or less. 4.6 of octyl tin maleate is a white powder, mp 87-105 ℃, insoluble in water, soluble in benzene, ethanol, acetone. The non-toxic, has excellent long-term heat resistance, mainly for the sub tin mercaptide stabilizer, often in the amount of 0.3-0.5 parts. Five sub-heat stabilizers 5.1, epoxidized soybean oil epoxide, epoxy linseed oil, epoxidized tall oil, epoxidized butyl stearate, octyl epoxy compounds such as polyvinyl chloride used in sub- heat stabilizers, they used the main stabilizer with a high synergistic effect, with the advantages of light stability and non-toxic, suitable for soft, in particular to the exposure to sunlight soft PVC products are not typically used rigid PVC products. 5.2, a phosphite decyl diphenyl phosphite, didecyl monophenyl phosphite esters are also sub PVC heat stabilizer, in particular barium / cadmium and calcium / zinc stabilizer system used to improve the transparency of products sex. But will hydrolyze and therefore can not be in contact with water used as a secondary PVC products stabilizer. 5.3, other organic compounds diphenlthiourea 2 - phenylindole, β-line butyric acid esters, trimethylol propane, thio lauryl acid anhydride, and a high boiling polyhydric alcohol such as pentaerythritol, sorbitol, mannitol, etc., with the primary heat stabilizer and use may also play a synergistic effect.

PVC stabilizer

 Scope: pvc rigid pipe, pvc cable materials used as well as profiles and trunking line pipe.
Product features: This product is a combination of rigid pvc pipes and cables, use of the environment and the  one pack stabilizer use of customers' pipes, cables requests, it can effectively play of light, heat stable dual role, but has done the maximum weather resistance coordination to make products in sunshine and rain, maintaining the PVC plasticizer inherent performance. In processing, the product has excellent dispersion, chromatic aberration reduction pellets, processing fluidity, plastics melt evenly. It also can have a stable extruded product, more timely absorption of hydrogen chloride, so that the processing machine from the stearic acid  inorganic acid erosion, improve the mechanical properties and gloss, color, texture and so on.