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 .

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.

Development of PVC stabilizer

 PVC water pipe product features a high-impact , high toughness and impact resistance compared with the same specifications of the ordinary PVC-U pipes, impact resistance increased significantly, to more effectively resist point loads and uneven ground subsidence . 2, anti- water hammer can effectively improve the ability to resist water hammer , to prevent WSD aluminium stearate  damage to the pipeline in the operation process . 3 , resistance to environmental cracking performance improvement , installation and effective against external shocks during transportation of the pipe. 4 , strong chemical resistance tubing with a strong chemical resistance and can be used with any applicable to ordinary PVC-U pipes occasions. 5 , the cost is lower than the PE pipe, and because the pipe wall thickness than the thin PVC-U , PVC-U and considerable cost , superior performance , has promotional value , there is instead of PVC-U, the development trend of PE pipe .
Because of high impact PVC water pipe system, the viscosity is large, high stability and workability requirements , most  WSD Metallic stearate manufacturers use imported organic tin stabilizers and calcium zinc stabilizers. Initial coloring and stability of organotin stabilizers better, but since most manufacturers also produce leaded pipes and tubes , mixing systems and broken material difficult to handle , and the ingredients, the smell is relatively large , limiting the use of organic tin ; the cost of imported calcium and zinc is relatively high, for the comprehensive promotion of high impact PVC water pipe disadvantage. Therefore, strengthening the development of high impact PVC water pipe into the domestic calcium zinc stabilizers calcium zinc stabilizers domestic industry important topics and tasks.
   Second, the real one , identify the major raw materials and formulations
 A, PVC resin using the K value 66-68 PVC powder , PVC-U pipes and resin used in the same B, titanium dioxide and color pigments adjusted according to the requirements of pipe , titanium dioxide rutile titanium dioxide to use in order to improve weatherability pipe sex . C, the modifier is optional rigid inorganic ultrafine inorganic rigid material , special WSD stearic acid  surface active agent, a dispersing agent processing , so that the inorganic material can be uniformly coated on the surface of the PVC molecules , when the external force , the inorganic particles and between the resin matrix to produce crazing , can absorb impact energy , and thus the choice of rigid inorganic modifiers to reduce costs , while improving the pipe rigidity and toughness , so as to achieve " just tough balance" ; but when inorganic modifier added to after a certain amount of impact resistance PVC water pipe and high impact resistant hydraulic performance will decline , D, calcium and zinc composite stabilizer is calcium stearate, zinc stearate as the main metal soaps , combined polyol , Β- diketones, phosphite antioxidants and other auxiliary stabilizer and lubricant made ​​of a class of complex optimization of non-toxic environmentally friendly stabilizer, has good early color and long-term thermal stability ; PVC material can be appropriately increased toughness ; efficient with internal lubricant and external lubricant esters , etc., while the adsorption of the stabilizer itself , the production process can reduce the precipitation of the growth cycle E, the impact modifier is a compound for the supply of high-impact PVC tube designed to improve the impact modifier preferably has a PVC material , which is made ​​of a rubber elastic body is a synergistic effect , predetermined elastomers, elastomers and non- promoting agents predetermined composition . Impact modifier different toughening mechanism is different, and the compatibility of PVC resin are different , so by promoting agent may be different between the elastomer fine particles isolated from each other , preventing agglomeration , to promote the dispersion of PVC matrix and compatibility uniformly dispersed in the resin matrix , promoting toughening effect.

Heat stabilizer is mainly used for PVC and other chlorinated polymers

PVC 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, 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 plastic.
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 effect. The above problem can

be solved, thus contributing to the establishment of research in the field

of heat stabilizers and continue to develop. PVC heat stabilizer is

polyvinyl chloride (PVC) processing essential additives. With concern for

human health and ecological environment growing, countries have

promulgated a series of laws and decrees, and take various measures to

limit the use of heavy metal heat stabilizers containing lead, cadmium and

other. Outside the industry generally believe, PVC heat stabilizers

environmental protection has become the development trend will not be

reversed. In recent years, the process of environmental protection PVC

heat stabilizers, instead of the traditional WSD Plastic impact modifier  lead, cadmium heat

stabilizer, research and development of non-toxic, non-polluting, complex,

and efficient heat stabilizers has been more widely appreciated, its

synthesis and applied research made a lot of  WSD stearic acid new progress.
With the implementation of the people's awareness of environmental

protection regulations and decrees, PVC heat stabilizers to be non-toxic

and environmentally friendly direction of the trend. Our heat stabilizer

industry should conform to this trend and accelerate the pace of

structural adjustment, increase calcium zinc stabilizers, organic

stabilizer environmental products research and WSD Metallic stearate  development efforts,

emphasis on research auxiliary heat stabilizers and heat stabilizers

complex system, and promote China environmental process PVC heat

stabilizers.

Some of the major role of PVC stabilizer of some

PVC stabilizer is there are many, and see what kind of material you more specific selection. Common are lead salt stabilizer, such stabilizers because of environmental problems have been gradually withdrawing from the international market, but there are some  WSD Titanium dioxide rutile domestic manufacturers use when doing no material environmental requirements; metal soap stabilizers, mainly stearic salt, is generally not used alone, often between the metal soaps with each other or with lead salt stabilizer, etc. and use; composite stabilizer, contains more species, zinc composite stabilizer barium, calcium, zinc composite stabilizer, lead salt composite stabilizer, but it should be noted that the lead salt composite stabilizer is the use of technical means to solve some of the small lead salts powder easily float resulting inhalation toxicity problems in the processing of the dispersion there is a certain improvement, but with the ordinary The lead salt stabilizer, like it or not environmentally friendly; organometallic compounds, such as organic tin, antimony organic stabilizers are used in transparent PVC products; organic stabilizers, such stabilizers in the country rarely used; rare earth stabilizer. These are the ingredients from the stabilizer to classify, but it can also be classified as a powder and a liquid, transparent and opaque, not one described here. I hope my answer can bring you some help. A plastic heat stabilizer by type heat stabilizers are a class of polymers can prevent or reduce the heat in the course of processing and degradation or cross-linking additives to extend the life of the composite material. Usual stabilizers can be divided into categories according to the main component of salt, fatty acid soaps, organotin compounds, heat stabilizers, and the pure compound classes of organic compounds.
 1) Heat stabilizer salt: salt stabilizer is the combination of the "base" of lead salts of inorganic and WSD stearic acid  organic acids, such stabilizer having excellent heat resistance, weather resistance and electrical insulating properties, low cost transparency is poor, there is a certain toxicity, dosage is generally 0.5% to 5.0%. (Source Global polyurethane network) 2) a fatty acid based heat stabilizer: Such a thermal stabilizer is a compound of a fatty acid composition of roots and metal ions, also called metal soap heat stabilizers, acid groups, and its performance and the kind of metal ions , generally the amount of 0.1% to 3.0%. 3) organotin heat stabilizers: class PVC heat stabilizer molecule with chlorine atoms to form unstable ligand and the ligand organotin carboxylate group and a chlorine atom unstable replacement. Features such heat stabilizers are high stability, good transparency, heat resistance, the downside is expensive. 4) Composite type heat stabilizer: Such a thermal stabilizer is a metal salt or soap as  WSD Azodicarbonamide a kind of liquid or solid based compound and an organic tin-based compound, wherein the metal salts are calcium - magnesium - zinc, barium - calcium - zinc, barium - zinc and barium - cadmium; common organic acids such as organic acids, naphthenic acid, oleic acid, benzoic acid and salicylic acid.

Environmental plasticizer widely used physical and chemical methods

 I produced the environmental plasticizers plasticity agent for the cold type environmental plasticizers, it has a high plasticizing effect, good compatibility with the product, no oil leakage, no overflow, non-volatile, and high brightness products, the product can replace the original plastic additives dibutyl, dioctyl, the price is much lower than similar products. It is widely used in PVC plastics, rubber, sealing  WSD aluminium stearate strips, car tires, footwear, cables, plastic sheeting, granulation, waterproofing membrane, polyurethane waterproof coating, leather, plate, sheet, PVC hoses, shoe soles materials, rubber boots, etc., is an environmentally friendly green rubber industry plasticizer.
  Plasticized rubber material that can be applied in some of the rubber, the rubber can make the interaction between the molecules is reduced, thereby reducing the glass transition temperature of the rubber, rubber-Sik plasticity, fluidity, easy rolling, extrusion molding, etc. operations, while also Some vulcanized rubber to improve mechanical properties such as hardness and reduced modulus, high elasticity and gives lower heat, cold, etc. improve.
The rubber can be plasticized by physical and chemical methods. Including chemical plasticizing the plasticized masticated masticated rubber processing technology are, at the time of plasticized synthetic rubber in the rubber through chemical reaction the introduction of the flexible molecular chain structure of the molecule can be increased to achieve the purpose of the plasticized . Not because of the chemical plasticized material from the plasticizing effect of volatile or precipitates lose its role plasticizing effect for a long time and therefore more attention. Physical plasticizing additional material refers to a method to achieve the purpose of plasticizing the purpose of said plasticized usually WSD Chrolinated polyethylene  refers to the physical plasticized physical plasticizing substances known to soften the external environmental plasticizers.
Rubber softening environmental plasticizers usually divided according to their polarity and use softeners and environmentally friendly plasticizer. Derived from natural substances, called for a non-polar rubber softener; mainly used polar synthetic rubber or plastic  WSD stearic acid material called environmentally friendly plasticizer. Currently the industry collectively environmental plasticizers.
Environmental plasticizer used in the production process should meet the following conditions: plasticizing effect, with less absorption speed, good compatibility with rubber, small volatility, do not migrate, cold is good, water, oil and solvent resistance, heat resistance, light resistance, electrical insulation, flame resistance and good resistance to bacteria, colorless, non-toxic, cheap and so on.

Status and trends of non-toxic PVC heat stabilizers

Status and trends of non-toxic PVC heat stabilizers
Polyethylene, polyvinyl chloride PVC is second only to the world's second-largest synthetic resin production over 90,000 , however , PVC , there are some shortcomings difficult to overcome , including poor thermal stability was most prominent. PVC due to poor thermal stability , softening temperature and decomposition temperature difference is small , has caused great difficulties to the process , so the process  Aluminum hydroxide must be added a certain amount of heat stabilizers to improve its thermal stability. Currently , lead salt is the largest amount of heat stabilizer. In building a harmonious society and ensure the sustainable development of the premise that people 's awareness of environmental protection and health gradually strengthened, therefore , low toxicity , no pollution, has become complex and efficient development direction of PVC heat stabilizers .
Thermal stability of PVC resin
PVC is one of the oldest  plastic additive synthetic thermoplastics , has difficulty burning, good mechanical properties, low prices, abundant sources of raw materials , synthetic mature technology , which is widely used in construction, telecommunications , transportation, electronics, chemicals , packaging and other industries. PVC heat stabilizers in the heat or subjected to high energy radiation, such as ultraviolet light , "the impact of de- hcl autocatalytic reaction occurs , the thermal decomposition mechanism is generally believed that there are zinc stearate  three kinds of radical mechanism oxygenated environment ; . ( 2 ) ion mechanism under a nitrogen atmosphere ; main factors ( 3 ) single molecular mechanism under vacuum conditions affect the thermal decomposition is pvc chain structure , refers to a branched , double, allyl chloride, head structure and molecular weight of conjugated double bonds etc. "effect ; addition, oxygen , HCL additives and other external factors also have an impact .

retention aid relationship with aluminum sulfate

Aluminum sulfate manufacturers have reported , aluminum sulfate is paper sizing agent is soil conditioning neutralizer , flocculation and sewage treatment flocculants . The retention aid is used to improve the wire section of paper fibers and fines retention of the Metal stearate  chemical. Then they existed before what kind of relationship do ?
Common retention aids
 Retention aids are commonly modified starch and synthetic resins, retention agents generally also have to accelerate the slurry treatment filter aid performance. There are two main types . ( 1 ) modified starch . From corn , potato , tapioca wet , dry process obtained anion and cation -modified starch. Mainly quaternary ammonium and methyl tin stabilizer  amine -modified cationic starch . ( 2 ) polyacrylamide . Are generally anionic or cationic modified type of product . Anionic polyacrylamide by partial hydrolysis reaction or sulfomethylation reaction. Or by acrylic acid cis -butadiene copolymer derived. Cationic Hoffman is through Mannich reaction or reaction. Also with aminoalkyl methacrylate copolymer obtained .
Aluminum sulfate retention aid
Generally, there are inorganic retention agents such as aluminum sulfate , sodium aluminate ( retention effect chrome oxide  is not significant ) ; cationic starch ; carboxymethyl cellulose ; synthetic resins ( e.g., polyethylene imine , polyacrylamide , polyethylene oxide , polyamides , etc. ) .
  That aluminum sulfate with the fiber retention effect , which means it is a retention aid . This is similar to its role in wastewater treatment . However, its retention effect as polyaluminum chloride and polyacrylamide .

plastics processing aids Main Profile

The main reason is that this growth to continue in the alternative plastic materials traditional materials such as metal , wood, and minerals. In fact , various additives in the resin for the  fluorescent brightener successful application of plastic materials are of great help. In the use of various types of additives to the polymer impact modifiers and processing aids for the  polymer to provide the most unique and most valuable superior performance , but also improve the processing performance of the product . Toughening treatment, rheology control , beautiful appearance , processing performance , and economic factors that are important to the nature of the property . Many of these additives have been used for many years , after a long development derived from a wide range of varieties. A major reason for barium stearate  this situation is the emulsion polymerization process varied, which makes scientists continue to design suitable polymer components , polymer structure , polymer morphology and molecular weight / weight distribution . Low cost of production , and the resulting product is easy to separate the emulsion , therefore , in the commercial production of emulsion polymerization is very attractive . Subsequent to a variety of acrylic processing aid and an acrylic impact modifier . Initially , these additives are primarily used to improve the polyvinyl chloride (PVC) processability and toughness. And processing aids for PVC mainly to promote fusion of PVC , to enhance the melt strength , to improve the dispersion properties and surface quality. High molecular weight PVC foam processing aid is an important component. Means of processing aids , PVC foams can be obtained in a more homogeneous foam structure , and to reduce the breakdown of closed cell foam density will be lower . Act as a lubricant processing aids can effectively prevent the molten plastic bonded to the tin stabilizer  metal surface to improve the surface quality of products , improve production efficiency.
There are many applications of plastic materials is very limited , because they either do not have the required physical properties , or its processing performance is very poor , processing aids, is used to enhance the plastics melt processing, increase production, reduce parking maintenance time and provide better quality products . According to the type of functionality , processing aids can be divided into flux , melt rheology modifiers , lubricants and dispersing accelerator. In fact , each type of processing aids and have more than one effect. Any one processing aid functionality and application results to be dependent on its chemical composition , the polymer structure, molecular weight and type of the polymer matrix .

Hard some introduction of sodium

 Sodium stearate, calcium stearate is carried out with sodium chloride metathesis reaction derived fine white powder , metallic calcium content of 6.5% , mp 149-155 ℃, heating loss is less than 2% , the  PVC heat stabilizer relative density of 1.08 , fineness by 0.075mm sieve 99.5% , free acid ( as stearic acid ) 0.5% , in the air, water absorption .
The product can be used as a thermal stabilizer of polyethylene , has excellent lubricity, good processability , and an epoxy compound with zinc soap and having a synergistic effect , can improve the  fluorescent brightener thermal stability, and the base of lead salts and lead soap and used hardware products , you can improve the speed of gelation . This product can be used in polyethylene and polypropylene resins to eliminate residual catalyst on the adverse effects of color and stability . This product is also widely used as a polyolefin , polyester reinforced plastic , phenolic resin, amino resin, thermosetting plastics lubricants and release agents .
Sodium stearate of formula Na (C18H35O2) { i.e. (C17H35COO) Na}, molecular weight 306.46 . 7.51% sodium containing stearic acid 92.50 , purity 99.5%. White powder or white block, with creamy , fatty taste , soluble in water or alcohol-water solution is alkaline due to hydrolysis . Melting point 100 ~ 110 ℃, should be kept in kept in a cool , dry, well  Barium soap ventilated place .
Main purpose:
1 . Detergent : for controlling foam in the rinse .
2 . Emulsifying or dispersing agent: for the polymer emulsion and antioxidants medium .
3 . Corrosion inhibitors: polyethylene packaging films it has protective properties.
4 . Cosmetics: shaving gel , transparent viscose
5 . Adhesive: natural rubber and then paste paper used .

PVC stabilizer master some role in some of the major

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 PVC stabilizer for cable  main and auxiliary stabilizers act synergistically after use . First, the 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  Plastic impact modifier 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 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 other organic solvents. Was heated and dissolved in an organic solvent, after cooling a gum. Case of decomposition of stearic acid and the  lead stearate 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

Preparation of metallic stearates

Discloses the preparation of a metal stearate, the method under normal pressure stearic acid, powdered metal hydride
, Oxides or carbonates and medium water mixing in the melting point of stearic acid and heated to the  acrylic processing  melting point stearate
The above reaction product obtained by spin-drying, dispersing, drying metallic stearates, medium water recycled through
-Ring, the non-water discharge; method of the present invention may be a simple conventional production equipment complex prepared by decomposition
Color, composition, melting point and double decomposition products are basically the same and the  calcium zinc stabilizer apparent density was significantly improved quality calcium stearate,
Barium, lead, zinc; compared with the double decomposition method, a method of preparation of the present invention, barium stearate, zinc stearate, productivity
Significantly improved, energy consumption, water consumption significantly reduced, preparation of lead stearate, calcium stearate and white blowing agent  productivity remained unchanged
However, energy consumption, water consumption is also significantly reduced.