The definition of PVC stabilizer

  Definition of PVC stabilizer in a narrow sense, refers primarily to maintain high polymer plastics, rubber, synthetic fibers, such as stability and prevent its decomposition, the aging of reagents. PVC stabilizer lead salt is the most commonly used heat stabilizer, is also very effective heat stabilizer, the amount can be accounted for more than 70% PVC heat stabilizers. Advantages stabilizer: excellent thermal stability, with long-term thermal stability, good electrical insulation properties, weatherability, low prices. Stabilizer disadvantages: poor dispersibility, toxicity, with the PVC heat stabilizer  color, it is difficult to obtain a transparent product, it is difficult to obtain a vivid color products, the lack of lubricity, easy to produce sulfur contamination. PVC stabilizer to increase the solution, gel, solid, chemical stability of the mixture are called stabilizers. It can slow down the reaction, to maintain chemical balance, reduce surface tension, to prevent the light, PVC stabilizer for profile
  decomposition or oxidation decomposition effect. Source generalized chemical PVC stabilizer is very extensive, mainly based formulation designed to designers, the flexibility to use any chemicals to achieve a stable product quality purposes. Narrowly speaking, mainly refers to maintain high polymer plastics, rubber, synthetic fibers, such as stability and prevent its decomposition, the aging of reagents. In food additives, stabilizers is to make food structural stability, enhanced viscous solids of a class of food additives. Auxiliary heat stabilizer itself does not have heat stability, and only used in combination with the primary stabilizer, heat stabilizing effect will be generated, and to promote the primary stabilizing effect of the stabilizer. Secondary thermal stabilizers generally do not contain metal, which is also called a non-metallic heat stabilizers.

PVC stabilizer uses and Introduction

PVC stabilizer to increase the solution, gel, solid, chemical stability of the mixture are called stabilizers. It can slow down the reaction, to maintain chemical balance, reduce surface tension, to prevent the light, thermal decomposition or oxidation decomposition effect. Sources generalized chemical stabilizer is very extensive, mainly based formulation designed to designers, the flexibility to use any chemicals to achieve a stable product quality purposes. Narrowly speaking, mainly refers to maintain high polymer plastics, rubber, synthetic fibers, such as PVC stabilizer  and prevent its decomposition, the aging of reagents. With a stabilizer according to several different mechanisms to achieve thermal stability purposes. In food additives, PVC stabilizer is to make food structural stability, enhanced viscous solids of a class of food additives. Lead salt PVC stabilizer low price, good thermal PVC stabilizer , has been widely used. Composite thermal stabilizer of the various components can be adequately mixed in the course of production, with a significant improvement in mixing the resin dispersion uniformity. Composite heat PVC stabilizer of the various components can be adequately mixed in the course of production, with a significant improvement in mixing the resin dispersion uniformity. Liquid stabilizer more popular in the country are: PVC heat stabilizer barium zinc stabilizer, liquid calcium zinc stabilizers, liquid barium cadmium zinc stabilizers, liquid barium cadmium stabilizers, liquid potassium zinc catalyst foam stabilizer. New Century people more emphasis on environmental health, as the heavy metals cadmium, had been criticized, so the application scale is gradually reduced, and now the market is commonly used in liquid zinc and barium liquid calcium zinc. Little difference between the stability of the liquid, the liquid stabilizer generally has a greater solubility, and a good dispersibility in PVC resin powder, an effect on the transparency of the powder is also much less than the stabilizer. However, the risk of precipitation of the liquid stabilizer greater. Need to select a suitable solvent.

Introduction and properties of PVC stabilizer

Sources generalized chemical stabilizer is very extensive, mainly based formulation designed to designers, the flexibility to use any chemicals to achieve a stable product quality purposes. Narrowly speaking, mainly refers to maintain high polymer plastics, rubber, synthetic fibers, such as PVC stabilizer
  and prevent its decomposition, the aging of reagents. PVC stabilizer for pipe can increase the solution, gel, solid, stable mixture of chemicals called stabilizers. PVC stabilizer for pipe can slow down the reaction, to maintain chemical balance, reduce surface tension, to prevent the light, thermal decomposition or oxidation decomposition effect.Composite Heat Stabilizer conducive scale production, for the development of lead salt heat stabilizer provides a new direction. Auxiliary heat stabilizer itself does not have heat stability, and only used in combination with the primary PVC stabilizer
 , heat stabilizing effect will be generated, and to promote the primary stabilizing effect of the stabilizer. Auxiliary heat PVC stabilizer for pipe generally does not contain metal, also known as non-metal heat stabilizers. Lead salt stabilizer low price, good thermal stability, has been widely used, the composite heat stabilizer of the various components can be adequately mixed in the course of production, with a significant improvement in mixing the resin dispersion uniformity. Simple supply and reserve the materials is conducive to production and quality management.

PVC stabilizer Introduction

PVC stabilizer to increase the solution, gel, solid, chemical stability of the mixture are called stabilizers. It can slow down the reaction, to maintain chemical balance, reduce surface tension, to prevent the light, thermal decomposition or oxidation decomposition effect. Sources generalized chemical stabilizer is very extensive, mainly based formulation designed to designers, the flexibility to use any chemicals to achieve a stable product quality purposes. Narrowly speaking, mainly refers to maintain high polymer plastics, rubber, synthetic fibers, such as stability and prevent its decomposition, the aging of reagents. PVC heat stabilizer itself does not have heat stability, and only together with the main stabilizer and use, will produce heat stabilizing effect, and the effect of promoting stability in the primary PVC stabilizer. Secondary thermal stabilizers generally do not contain metal, which is also called a non-metallic heat PVC stabilizer  . Liquid PVC stabilizer in the country more popular are: liquid barium zinc stabilizer, liquid calcium zinc stabilizers, liquid barium cadmium zinc stabilizers, liquid barium cadmium stabilizers, liquid potassium zinc catalyst foam stabilizer. New Century people more emphasis on environmental health, as the heavy metals cadmium, had been criticized, so the application scale is gradually reduced, and now the market is commonly used in liquid zinc and barium liquid calcium zinc. Little difference between the stability of the liquid, the liquid stabilizer generally has a greater solubility, and a good dispersibility in PVC resin powder, an effect on the transparency of the powder is also much less than the stabilizer. However, the risk of precipitation of the liquid stabilizer greater. Need to select a suitable solvent.

WSD PVC stabilizer Introduction

Solution can increase, colloidal solids, chemical stability of the mixture are called stabilizers. It can slow down the reaction, to maintain chemical balance, reduce surface tension, to prevent the light, thermal decomposition or oxidation decomposition effect. Sources PVC heat stabilizer chemical stabilizer is very extensive, mainly based formulation designed to designers, the flexibility to use any chemicals to achieve a stable product quality purposes. Narrowly speaking, mainly refers to maintain high polymer plastics, rubber, synthetic fibers, such as stability and prevent its decomposition, the aging of reagents. Auxiliary heat stabilizer itself does not have heat stability, and only used in combination with the primary stabilizer, heat stabilizing PVC stabilizer for profile will be generated, and to promote the primary stabilizing effect of the stabilizer. Secondary thermal stabilizers generally do not contain metal, which is also called a non-metallic heat stabilizers. Liquid stabilizer more popular in the country are: liquid barium zinc stabilizer, liquid calcium zinc stabilizers, liquid barium cadmium zinc stabilizers, liquid barium cadmium stabilizers, liquid potassium zinc catalyst foam stabilizer.

WSD PVC stabilizer one pack stabilizer PVC Heat stabilizer Introduction and Safety

  WSD PVC stabilizer is one important class of plastics processing aids, the birth and development of a thermal stabilizer synchronization with PVC resin is mainly used for the processing of PVC resin, heat stabilizer and so the PVC resin, the ratio of hard and soft PVC products are a close relationship. Since the thermal energy, such as PVC stabilizer for profile  fillers, and other compatible polymers and many other materials, which is considered one of the most common polymers. Its main drawback is the differential thermal stability.
  The use of additives to change the polyvinyl chloride (PVC) and the operating characteristics of the physical appearance, but can not prevent the decomposition of the polymer. Although in the physical and chemical factors of the polymer material will always gradually destroyed, but the PVC stabilizer is called a class of substances can be effectively prevented, substantially reduced or even stop the degradation of the material. Security issues heat stabilizers have more and more people's attention. . Safety PVC stabilizers should consider three aspects, namely the safety of the use of raw materials processing, the second is the user's security, the third is the safety of waste on the environment. Processors security PVC heat stabilizer calcium stearate  measures can be liquefied by stabilizers, cream-based, granular, etc. to be addressed. For the user's safety, the molecular weight of the stabilizer may be prepared in a reactive stabilizer or to improve its resistance to pulling, but taking into account the effect of stabilizing the chemical reaction at the molecular level, the above method is not the most appropriate method, the most good way to still use high security stabilizers. In the choice of the stabilizer, the stabilization process must also be considered in the resin with a stabilizer, or stabilizing agents react with each other the resulting chemical safety.

The actual effect of PVC heat stabilizer

PVC heat stabilizer has two main preparation process, one is the calcium carbide process, main raw materials for the production of PVC heat stabilizer is calcium carbide, coal and salt; two is the ethylene method, optical brightener main raw material is oil. PVC heat stabilizer and zinc borate and optical brighteners are mainlycalcium carbide method. In the calcium carbide preparation of PVC, PVC thermal stabilizer in the salt electrolysis hydrogen chloride for the production of PVC, sodiumsurplus for the production of caustic soda, so, black iron oxide, zinc borate, antimonyflame retardant actually exists symbiosis, chlor alkali balance optical brighteners andthe entire industry two processes in different economic development cycle opticalbrightener, cost difference. Under normal circumstances, iron oxide black because ofhigher oil prices, high aluminum hydroxide and optical brightening agent ethyleneproduction cost, chromium oxide and zinc borate advantages; but once the international economy into recession, chromium oxide will be running low, calcium carbide process because of high energy consumption, such as the electricity price support, cost advantage disappears. PVC heat stabilizer and optical brighteners tocarbide PVC capacity is expanding rapidly, formed a great challenge to the ethyleneproduction of PVC, optical brighteners are many ethylene enterprises at a loss of the edge. But with the 2008 May crude oil prices continued to decline, the ethylene cost advantage obviously, electrical manufacturers stone low profit operation, or evendifficult to continue.

The practical application of fire retardant PVC

Short flame retardant PVC: PVC is a chlorine atom using a polyethylene polymer of one hydrogen atom. PVC is a white amorphous powder, a small degree of branching. Industrial production is dedicated PVC flame retardant masterbatch for coloring! Raw crushed, add masterbatch granules dissolve heating, mechanical molding! Full name masterbatch color masterbatch also called species, mainly used in plastic masterbatch the. WSD PVC stabilizer achieve what color toone pack stabilizer achieve the effect of plastic or rubber products in the Third and masterbatch is a representative. Zhejiang Shengzhou Master Chemical Co., the company invested in the construction process and technology development retardant PVC plastic flooring, PVC flame retardants quality control ultra-resistaone pack stabilizert and flame retardant laminate PVC plastic flooring construction process is as follows: Construction clean up the preparatory work before the original terrazzo surface dust and grit dedicated interface agent deal screeds cleaning,trimming brush self-leveling grout grout surface polished character piece, slightly blue-ray filmone pack stabilizer a variety of colored pieces; may sample or standard color card provided by the customer to produce, acone pack stabilizer cording to transparency: transparent film, translucent film,WSD PVC stabilizer opaque film, press Finish: film, frosted film PVC flame retardant thermoplastic polyvinyl chloride resin. Zhejiang Shengzhou Master Chemical Limited, a company in the steel, wood, cement-based building materials selected, flame retardants and PVC is a general-purpose resins, chloWSD PVC stabilizer-alkali industry is the largest organic chlorine consumption products.

WSD PVC Heat Stabilizer

WSD PVC Heat Stabilizer is mainly used for PVC heat stabilizers and other chlorinated polymers. PVC has been found only in the plastic molding process to above 160 ℃, while it is in the 120 ~ 130 ℃ thermal decomposition begins, releasing HCl gas, zinc borate HCl is generated if it does not inhibit the decomposition will further exacerbate this problem has been plagued the main problem of development and application of PVC plastics.
The study found that if the amount of PVC-containing plastics, such as lead salts, metal soaps, phenols, aromatic amines and other impurities, which will not affect the processing and application, but also to some extent, delaying the thermal decomposition aluminum hydroxide effect.WSD PVC Heat Stabilizer The above problem can be solved, thus contributing to the establishment of research in the field of heat stabilizers and continue to develop.

PP plastic WSD PVC stabilizer of physical characteristics

PP polypropylene resin is a colorless, odorless , non-toxic powder or granular combustible matter , density of 0.90 ~ 0.91g/cm3, a low density resin . It is more transparent than polyethylene , lighter , breathable lower.
Regular molecular structure of the polypropylene is a crystalline polymer having a spherulite structure in general . Crystallinity polymer isotacticity with relevant regulations , etc. The higher the degree of crystallinity larger . The crystallinity of the polypropylene is generally from 30 to 70% . Density directly affects the degree of crystallinity , density polypropylene crystalline portion of 0.94g/cm3, the density of  Titanium dioxide rutile the non- crystalline portion of 0.85g/cm3, and therefore the higher the crystallinity, the greater its density . Surface hardness than the high -density polyethylene polypropylene big . Its tensile strength than polyethylene , polystyrene, and styrene - butadiene - acrylonitrile copolymer (ABS) large, especially when the temperature exceeds 80 ℃ still maintain high strength , PVC stabilizer even at 100 ℃ stretching , half strength retained at room temperature . Polypropylene at high temperatures have a high impact strength , low temperature impact strength but worse than polyethylene. Polypropylene has excellent flex fatigue resistance , which is one of the unique properties of polypropylene . Polypropylene is the best inexpensive resin a heat-resistant , can be used in harsh conditions of 100 ℃ . The melting point of the polypropylene 164 ~ 170 ℃ ( pure isotactic polypropylene mp 176 ℃). As polypropylene and polyethylene , has excellent electrical insulating properties , and because it does not absorb water ( water absorption < 0.02% ) , and therefore not affected by humidity , the  Plastic impact modifier dielectric constant and dielectric loss is small , with excellent high frequency characteristics. Polypropylene has good chemical stability , its chemical stability increased with increasing degree of crystallinity , except for a few medium is stable for most media Han , PVC stabilizer is usually an inorganic acid , base or salt solution , in addition to a strong by oxidation , the temperature is 100 ℃ at almost no damage to the polypropylene . The presence of a tertiary carbon atom in the polypropylene molecule , and therefore susceptible to oxidative corrosion medium . Polypropylene is very stable polar organic solvents , alcohols , phenols , aldehydes , ketones, carboxylic acids , etc. do not make the most of the swelling  Aluminum hydroxide of polypropylene , aromatic and chlorinated hydrocarbons , but when the polypropylene has above 80 ℃ dissolution.

PVC stabilizer should be noted that some of the problems

Production of paint color retention stabilizer made six major advantages:
A coating applied to the construction process scratch easily without effort, good polishing.
After two dry smooth and delicate, jade hand touch, side as a mirror.
3 hardness is hand draw trace.
4 water resistance, washing powder can not afford a hundred times without cracking. Not from powder using a decade, two decades can not block.
5 No yellowing, PVC stabilizer bright color, good whiteness.
6 powder coating can be resolved using the WSD Stabilizers for pipe  blur, yellow major problem. (Dry, add water while stirring, to join together the raw
materials and water, one hundred kilograms plus 300 grams of finished paint color retention stabilizer, stir, to construction.)
Instructions for use:
Before a first add ingredients of water, ash and calcium PVA glue, three raw materials are mixed and stirred for 5 - 10 minutes,
stop the rotation of the stirrer was slowly added color retention stabilizer be added after all the added powder and other Flying
raw materials.
After adding 2 per ton of raw materials on the basis of your original finished paint plus 100 - 200 kg Flying powder, the use of
this raw material in production to try to make a thick, dust ourselves, plus thick prevail. Paint will be more easy to use, easy
sliding profits do not turn the knife, a good collection of light.
3 additional insurance required per ton of  WSD Metallic stearate finished paint color stabilizer summer 1 - 2 kilograms, can Paul 3 - 6 months does not
fade, the temperature at 25 degrees Celsius or less insurable year does not fade, its biggest advantage is the last light in color , became white paint, but also to extend the storage period of one year.
Note: A raw material can not and citric acid, PVC stabilizer in combination with borax, make sure to shake well before using this
product, do a small experiment and then put into production, production in proportion to the number of data to be accurate.
Two materials are chemical products, corrosive to the WSD PVC stabilizer  skin, do not directly touch.
3 according to the number of recipes using the plant ash calcium, calcium and more with gray color retention stabilizer on, the
longer the more you add color retention time, but do not use too much harm. Our conservative figures, plus a tonne of finished
paint color retention Stabilizer 1 - 2 kilograms best, more color, more weight, color retention time will be longer.
4 material to cool and ventilated, kept at room temperature; away from heat, sun exposure is strictly prohibited.

What are the advantages of PVC stabilizer

Advantages: the same as a heat stabilizer, a lead compound PVC material without compromising the excellent electrical properties,
low water absorption and outdoor weatherability. Disadvantages: Toxic; would cross contamination; generate lead chloride, forming
streaks on finished products; than Stabilizers for pipe  significant; immediately so often lead stabilizers in PVC products become opaque, and soon after
continuous heat discoloration. With the ban of lead, "Twelve Five" period while the proportion of lead stabilizers in PVC heat
stabilizers will be reduced year by year. Metal soap stabilizer monomer salt (acid salts): zinc stearate, barium stearate, calcium
stearate, lead stearate, cadmium stearate Metal soap  Aluminum hydroxide salt composite stabilizer: calcium zinc stabilizers, barium zinc stabilizer, barium cadmium stabilizers, barium cadmium
zinc stabilizer organic tin stabilizer
Advantages: PVC stabilizer organotin heat stabilizers for the most efficient, transparent and non-toxic products in the most widely
used of a class, its outstanding advantages: good thermal stability, transparency, and most of the non-toxic.
 Disadvantages: PVC stabilizer high prices, no lubrication.
 Most of the liquid organic tin, only a few PVC plasticizer  solid. May be used alone, often with a metal soap. Rare Stabilizer: no lubrication,
should join with the lubricant, the current production of rare earth compound stabilizer is rare, heat stabilizers and lubricants
compound formed, the amount is usually 4-6 copies. Another class of organic antimony stabilizer, a liquid stabilizer.

The main ingredient of PVC stabilizer

PVC stabilizer on the original white and gradually turn yellow - red - brown - black. PVC resin decomposition reaction is due to the de-HCL caused a chain reaction, leading to macromolecules strand breaks. PVC heat stabilizers to prevent thermal decomposition mechanism is through the following aspects to achieve. (1) by capturing the thermal  PVC lubricants decomposition of PVC HCl, to prevent catalytic degradation of HCl. The main mechanism of action of lead salts class here, in addition to metal soaps, organic tin, phosphorous lipids and epoxy 2) replacement lively allyl chloride atoms. Metallic soaps, lipids and organic phosphorous tin can here the role of the mechanism. 3) the reaction with free radicals, the radical termination reaction. Organic tin and phosphorous lipid mechanism role here. (4) with conjugated double bond, inhibit growth of conjugated chain. Organotin role and  PVC plasticizer mechanism of epoxy here. (5) the decomposition of peroxide to reduce the number of free radicals. Organic tin and phosphorous lipid mechanism role here. 6) HCl passivation effect of a catalytic metal ion removal. PVC stabilizer with a stabilizer according to several different mechanisms to achieve thermal stability purposes. Composite stabilizer can be divided into the following categories: (1) liquid barium zinc composite stabilizer is generally pale yellow to yellow-brown oily liquid, specific gravity 1.0-1.1, good heat resistance at room temperature, without sulfide pollution, and epoxy plasticizers and stabilizing effect can be improved by, it can activate the foaming agent. 2 main  Polyethylene wax ingredient liquid calcium zinc composite stabilizer nontoxic liquid calcium zinc stabilizers are calcium stearate, castor oil, calcium, zinc stearate, castor oil, zinc and epoxy soybean oil, ultraviolet absorber. Hugh liquid calcium zinc stabilizers are generally used more soluble in organic solvents having a carbon number of less fat fat calcium and zinc. Because of the different components, varied in nature, usually pale yellow to yellow clear oily liquid at room temperature gravity of 1.0-1.05. It is non-toxic PVC stabilizer, mainly for food packaging films, containers leather foam stabilizers.

China is a major WSD one pack stabilizer producer of PVC is also the world 's largest consumer of

China is a major producer of PVC , but also the world's largest consumer. 2007 China PVC production capacity has reached 14.5 million , t increase of 45 % compared to 2006 , the average annual growth rate for the world nine times , accounting for 30 % of the world 's total PVC . With the further expansion of PVC production capacity , demand for PVC heat stabilizers also continue to rise. Since the mid- 1950s , China began producing self- supporting since PVC heat stabilizers , heat stabilizers for PVC consumption With the rapid development of the industry and a substantial increase in heat stabilizers developed into the second largest plastics additives products. At present, China plastic heat stabilizer production enterprises have more than 100 , while the low-end of the lead salt heat stabilizer is still overwhelmingly dominant , industry 60% of enterprises due to technical reasons plastic processing aid only to produce lead salt -based heat stabilizers , domestic PVC products in more than 65% or the use of lead salt heat stabilizer ( metal soap and composite metal soap is also part of the lead soap heat stabilizers ) , the annual amount of up to about 120 000 t. To avoid potential lead contamination , improve people's living environment , China since 2003 began a comprehensive campaign to ban lead . Ministry of Construction in 2004 began requiring the use of non- national lead salt water pipes PVC heat stabilizers ; Beijing from April 1, 2005 began restricting the use of lead- salt heat stabilizer PVC pipes for drinking water ; power system also introduced a ban within the grid regulations governing the use of chlorinated PVC protective lead salts and organic tin heat stabilizer to prevent environmental pollution, especially pollution of groundwater sources . PVC profiles have now begun to explore the lead-free. China's environmental PVC heat stabilizerprotection type calcium / zinc heat stabilizers are still dependent on foreign imports , but the price is expensive, imported calcium / zinc heat stabilizers are generally in the 3 to 5 million /; t because the domestic PVC heat stabilizer production of PVC heat stabilizers business technology behind domestic calcium / zinc complex heat organic pigments stabilizer market is still unable to meet performance requirements . Lead salt heat stabilizer deadline can not be disabled , to some extent hindered the goal of a comprehensive ban on schedule to achieve the lead pollution of the environment still exist and are widening. Carry out the role of non-toxic compound heat stabilizer technology research and development , and to achieve large-scale domestic production , to ensure the sustainable development of economy, society, environment build harmonious relationship between man and nature , have very important .

WSD PVC stabilizer and many types of different combinations

PVC stabilizers, and many different types of combinations , generally can be divided according to the chemical composition of the lead salt , metal soaps ( such as stearic acid metal soaps, including barium, cadmium , calcium, lead and zinc soaps , etc. ) , organic tin epoxy esters and chelating agents ( such as phosphorous acid ) and the like. Currently, lead salt stabilizer is still the largest amount of a stabilizer . 1999 in North America , Western Europe, Japan, the consumption structure of heat stabilizers are listed in Table 1-1. Lead salt stabilizer total heat stabilizers PVC stabilizer in the share , with the countries and regions vary. 60,50 and 17% , accounting for the total heat stabilizers Western Europe, Japan and North America lead salt stabilizer. In these products , a product can be made into powder, granular, flake and pellets can melt and the like. " A package " is likely to exist between the additive type product synergies , thereby enhancing the stability of results, and eliminates the need for cumbersome calculation for each additive , easy to use and store the user , but also to reduce waste of resources and environmental pollution . Representative products in foreign markets have AKGros of Interlite series. Development of rare earth and composite metal soaps such as non-toxic stabilizer is one of the development trend of heat stabilizer industry internationally . 1999 in North America, Western Europeplastic processing aid and Japan, consumption of heat stabilizers were about 8, 16 and 70 thousand tons / a, a total of about 310,000 t / a, is expected to demand in 2004 in North America and Western Europe, heat stabilizers are 10 and 170,000 tons in 1999 to 2004 , the average growth rates of 4.2% and 1.0%. Japanese demand is maintained at about 70,000 tons . Lead salt heat stabilizer below the average growth rate of demand growth or negative growth trend, and composite ( especially toxic Ca / Zn) heat stabilizers demand growth higher than the average growth rate , the reason is that strict environmental regulations worldwide technology , national attention to the environment due to human survival . Due to the global limit toxic heavy metal salts used in PVC processing , product adjustment to accelerate the pace of new products , development of new formulations of very active.

Soap is a general term WSD PVC stabilizerfor a fatty acid salt

Soaps are salts of fatty acids in general. Formula RCOOM, wherein RCOO is a fatty acid radical , M is a metal ion . Fatty acid soap daily typically 10-18 carbon atoms , a metal mainly alkali metal such as PVC stabilizer sodium or potassium , and is also useful for some organic bases such as ammonia, ethanolamine , triethanolamine soap made ​​for special purposes . Broadly , grease, wax , rosin or fatty acids, fatty acid salts and alkalis from the saponification or neutralization reaction proceeds , and can be called a soap. Soap soluble in water, washing decontamination effect. There are all kinds of soap soap, also known as toilet soap, soap and composite metalPVC plasticizer soap . Other metal ( alkaline earth metal or heavy metal ) salts of fatty acids , insoluble or sparingly soluble in water , and no cleaning effects collectively referred to as metal soap as a lubricant. Complex soap is a mixture of soap and the right amount of lime soap dispersant made ​​resistant to hard water , soap scum washed, not born .

PVC stabilizer heat discoloration Comment

Ideal PVC structure is the first - the tail structure-CH2-CHCl-CH2-CHCl-, is quite stable. But so far the synthesis method can not be like PVC synthetic butadiene rubber as a catalyst in the role  WSD PVC flame retardant of Jigger be oriented so that there are rules cis-butadiene polymerization. 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 WSD Titanium dioxide rutile  be divided into early-type, long-term, intermediate-and versatile four. A) cadmium, zinc soap is typical 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 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 WSD one pack stabilizer  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 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.