intenal lubricant is essential for PVC processing aids

Lubricants are essential in PVC processing aid. Add the right amount of lubricant in PVC can reduce friction between macromolecules PVC and PVC particles melt before the melt; reduce friction between the PVC melt plastic mechanical contact with the surface. PVC amount of lubricant can improve melt flow, increase productivity, and to prevent friction and heat caused by PVC
Degradation, improve product appearance quality. By WSD Stabilizers for pipe  function can be divided into external lubricant and the lubricant. PVC with poor external lubricant, easily migrate to the surface of the resin inside the melt, forming an interface layer of lubricant, thereby reducing the friction between the particles P PVC melt and the molten plastic prior to the mechanical contact between the faces. Lubricants containing a polar group, and has good compatibility with PVC, PVC can reduce inter-molecular forces, reduce melt viscosity and improve the melt fluidity.
Lubricant inside and outside of the points but relatively speaking, there is no strict criteria for the classification. Resin in WSD PVC lubricants  different polarities, the effect of external lubricants may change.
Such as stearic alcohol, stearic acid amine, butyl stearate, and stearic acid monoglyceride polar resin (such as PVC, PA) made, within lubrication, but for non-polar resin (such as PE
, PP), the outer displayed lubrication. Conversely, with a polar polymer such as paraffin resin phase difference, such as in a polar
PVC used as external lubricant applications: PVC lubricants in the plastics industry as the main mold release agents, plasticizers, antistatic agents, especially for plastic foam products, anti-shrinkage agents. In the production of PVC products as lubricants, and  WSD Polyethylene wax alkyd resin can be used as a modifier, a plasticizer of cellulose nitrate. A lubricant in the resin to improve the flowability and plastic processing products releasability to prevent the adhesion of the mold cavity or within the defects. General increase in the mold cavity plastic or coated surfaces. Common lubricants are fatty acids and their salts, long chain aliphatic hydrocarbons. Depending on the mechanism of action of lubricant can be divided into external and internal lubricant lubricants.

What are the characteristics of siliceous plastic lubricant

Product Features: Excellent moisture, waterproof, dustproof, shock-absorbing, blocking, buffering, noise lubrication, sealing and damping properties.
 Excellent high temperature performance: a wide temperature operating range applies (-40 ~ 200 ℃), good viscosity-temperature performance, eliminate carbide thermal oxidative stability, low temperature fluidity, temperature, temperature difference at different damping WSD Plastic impact modifier  torque results excellent, smooth, Excellent noise performance lubrication. Excellent adhesive properties: a high compression ratio of the oil molecules, very outstanding adhesion properties, the drawing performance is significantly (synthetic polymer materials and metal materials have high adhesion), good shear stability and electrical insulation, ultra Long reciprocating actuator life. Excellent stability: high chemical inertness (acid, alkali reaction is not active), the loss is not easy, not volatile at room temperature, no carbonation, no hardening resistance stable, very excellent mechanical stability, safe and nontoxic. Excellent compatibility: anti-corrosion, anti-rust, and most plastics and rubber, various WSD Chlorinated paraffin  media good compatibility. Recommended Applications:
1, between long-term lubrication for plastic / plastic, plastic / metal, metal / rubber low or wide temperature and sliding bearings, suitable for pneumatic valves, valve body and dynamic seals lubricated  piston and cylinder seal;
2, automotive transmission gear for extended temperature environments, the number of idle stepper motor, control cables (throttle, brake), fuser film lubrication closed permanently lubricated on the speedometer, printers, copiers fuser assembly;
3, for cold starting when needed to reduce the  WSD Stabilizers for pipe starting torque of the workplace, such as long-lasting lubrication electronic clock, cameras, optical instruments, transmitters, refrigerator fan bearings, mobile refrigeration equipment and servo gears.

New environmentally friendly calcium zinc stabilizers relatively fast development of complex rapidly

In the chemical industry, production, application of stabilizers is very broad, and more types of stabilizers , including composite stabilizer is the most widely used one . Composite stabilizer , there are many types , including calcium zinc composite stabilizer is a new environmentally friendly composite stabilizer , becoming the choice of many  aluminium stearate customers .
  Some people may think that low prices lead salt stabilizer , good thermal stability and select it. But this remind you of lead salts are salts of heavy metals , fine powder , once being inhaled, can cause lead poisoning, so in order sake of people's health , calcium zinc composite stabilizer changes the shackles of such a technique . It is mixed with a significant improvement in the uniformity of the resin dispersion . Mixing formula , simplified measurement frequency, to reduce the probability of loss and the resulting measurement error is brought about . A simple supply and reserve materials , conducive to the production , quality management . Offers the possibility of clean production of products, improve production conditions.
Due to environmental philosophy deeply rooted social , calcium zinc composite stabilizer win broad market rapidly developing world , prospects, countries are optimistic about its potential and its benefits to the environment , and it is its location, unique charm to the world PVC stabilizer  prove their role and status can not be replaced , the sustainable development of social stability needed it , but also environmental sustainability need it ! prospects for the development of the industry PVC non-toxic calcium zinc stabilizers tenths promising. Actively committed to the development and production of calcium zinc composite stabilizer. At present , the main products are calcium zinc composite stabilizer , PVC compound stabilizer , composite stabilizer and so on. As a professional production of composite stabilizer business, with advanced production equipment, laboratory  Chrolinated polyethylene equipment, testing equipment and professional R & D team , the company from the vital interests of customers, to green for the concept, to provide customers with high safety and environmental protection quality products, welcome customers to choose from.

Red iron oxide in the development and application of coatings

Our iron oxide red, the economic environment, the raw material used as a pigment, a perfect fit. Next, we take a look to understand that the development of environmentally friendly and red iron oxide in the coating application bar.
Development and red iron oxide in the  plastic additive coating in the application:
In the oxygen steel converter process, high temperature steam iron in an oxygen rich conditions, the oxidation condensation aerosols or cohesion quickly oxidized to fine spherical oxide particles (spherical surface with minimal free energy), the time to conversion of α-Fe2O3'll be blown or pulled out of the high temperature zone, the gas phase of Fe3O4 and FeO forms preserved to show its ferromagnetic properties. This process is similar to the formation of the production process of synthetic iron oxide red ferric hydroxide gel is dehydrated crystalline α-Fe2O3, and thereby gives the pigment properties.
BOF dust and sludge produced in the polyethylene oxide  process of red iron oxide, is essentially a process of removing impurities to the thick, which is due to formation of dust and mud determined complex environment, the environment in the oxygen steel converter, there must be refractory debris, alkaline flux of dust and splashing droplets of molten steel into the inside of the flue dust mixed with mud and become part of it. Subtle temperature materials often also a steam iron core cohesion, while molten droplets larger than 20 microns can not fully oxidized and become black particles must be removed. Therefore, the processing of dust and mud out of coarse screening, mainly to remove refractory, metallurgical flux debris and small steel particles, hydraulic classification is not fully oxidized primarily to remove  tin stabilizer particles or low iron oxides.
BOF dust and sludge production of iron oxide red paint with good performance, small size, easy to disperse, with a stable nature, several Baidu can withstand high temperatures, especially with excellent anti-settling properties, mainly from two aspects: One converter iron red with good magnetic properties, the magnetic domain of the magnetic proximity unit will be arranged in a certain orientation of the magnetic force of the magnetic gel, excluding the caking tendency of sink to the bottom; the other hand, the pigment fine particle size, large specific surface area, surface free energy large, fully wetted by the resin wrapped, suspension excellent, not easy to sink to the bottom, thereby enhancing the stability of the paint.

concrete surfaces enclosing class waterproofing agent of some description

Concrete surfaces enclosing class waterproofing agent is applied to the concrete surface coated with a layer of a surface layer can penetrate into the pores of the hydrophobic manipulation of waterproof material , such as commonly used in China silicone waterproofing agent, waterproofing agent  Impact modifier for PVC like sodium silicate , and the use of foreign methacrylate monomer waterproof Qi carbazole vinegar and so on. 1 penetrate the surface of the closed water causes and mechanism of concrete seepage mainly due to external pressure , or as a result of which the pores of the concrete surface adsorbed water, or because of the combined effect of both . Pore ​​water is due  iron oxide yellow to the pores on the surface acting on the surface tension of water in the concrete grout generated driving force of the adsorbed water . Concrete interface between water and the contact angle of the meniscus is generally less than 90 degrees, the force to drive water into the pores ( as shown in Figure la ) , which can wet the surface . When using a  plastic processing aid certain way ( brushing, spraying , etc. ) in the surface layer of the concrete surface coating applied waterproofing agent enclosing class , due to water repellent and coagulation Rui Qian Zhu Xi air bundle wrapped in cloth which fluorine anxious when Chongqing a flute into the water " containing ) doors ,, (a) normal coagulation on the surface of the twist 90 ' ) ST 1 contact angle ( wetting of the surface of the concrete filling the pores of the soil and the water repellent composition of the reaction itself, or because of the chemical properties of the pores of the concrete ( micropores , pores , etc. ) and water contact angle is increased to more than 90 degrees ...

The role of aluminum stearate

 Mainly for the production of stearic acid salts : sodium stearate, magnesium stearate, calcium stearate, lead stearate, iron stearate, aluminum stearate, cadmium stearate, potassium stearate, are widely used for making cosmetics, plastic cold increase plasticizers , mold release agents , stabilizers , surfactants , rubber vulcanization heat stabilizer for foaming board  accelerator , a waterproofing agent , polishing agent, metal soap, metal mineral flotation agents, softeners , pharmaceuticals , and other organic chemicals. In addition , oil-soluble pigments can be used as a solvent , crayons  organic pigments transfer slip agents , wax polishing agent , stearic acid glycerides such as emulsifiers . Stearic acid is widely used in the plastics industry PVC plastic pipe , plates, profiles , film manufacturing . Of PVC heat stabilizers, has good lubricity and good light and heat stability. The plastic PVC pipe , the stearic acid helps to prevent the processing of the " coke " in the PVC film is an effective process to add a heat stabilizer , and can be placed defense storm caused sulfide finished film discoloration. Stearic acid in the rubber industry and processing of synthetic rubber play an important role . Stearic acid is a natural rubber, synthetic rubber and widely used in latex curing active agent, also used as plasticizers and plastic processing aid  softeners . In the process of the production of synthetic rubber stearic acid to be added as emulsifier in the manufacture of foam rubber , stearic acid can be used as foaming agent, stearic acid is also used as rubber release agent . Cosmetic cream and cream for industrial stearic acid skin care products from these two types of emulsion , so that it becomes stable white paste . Stearic acid or manufacturing honey and almond milk the main raw material . Stearic acid esters in the cosmetics industry, soap more extensive use .

PVC stabilizers introduce some of the main

Compared with other plastics , under the same conditions in the stabilization of PVC requires more significant problem . Mainly if the PVC unstable , then it can not be processed and immediately sharp  PVC processing aid and severe degradation of discoloration . PVC with suitable additives and stabilizers are varied, so that the development of the industrial sector into a special . Which accounted for the first based on barium / Fort Worth -based organometallic compounds of lead , in addition, some of the organic stabilizer also has a certain importance . For future development , to discuss a given purpose "stable compound" possibilities. Factors affecting the Stearate zinc  degradation of polyvinyl chloride as a thermal decomposition activation energy minimum ( except than polyvinyl alcohol ) , so that its special stabilization is very essential . Whether fast (processing ) or slow (aging ) thermal degradation , the degradation process the most obvious feature is the presence of oxygen in the air , with automatic catalytic dehydrochlorination nature " '] . Due to the complex ions and free based chemical process , reconciliation set PVC action by gathering damage mountains . multicollinearity play double whitening agent  generation and Springboard base by base and oxidation caused a color change in the Ming and mechanical properties of trace metals, particularly iron and zinc will accelerated degradation male . terminal group of the polymer additive material and the reaction is also a great shadow ...

lubricants and lubrication is currently no real sense of theories and laws

Right - like PVC-U formulation design , the author believes that the difficulties formulation and the main contents of the inner and outer lubricant selection of species and their proportions and adding the total design. Lubricant to the total amount should be suitable , and PVC stabilizer for cable  internal and external lubricant ratio is more important , even though the total amount sufficient , but if imbalance, nor co- continuous production of qualified products.
However, for the processing of PVC-U critical lubrication system , in theory there is no known theory , and even formulation can effectively guide the experimental law no . The  magnesium stearate only rule is to learn from the so-called general chemistry , " like dissolves like " rule, which is the lubricant of PVC resin polarity polarity more similar to its compatibility with the more evil , and thus its role within the lubrication better ; against outside lubrication is strong, but this rule for guiding formulation also very limited. Because the polarity judgment lubricant is a lubricant according to the chemical structure, that the lubricant molecules containing hydroxyl groups , ester groups, carboxyl groups , amide group and  epoxidized soybean oil an ether group , a ketone group such as a polar functional group species , quantity and with a long alkyl ratio. As the lubricant chemical structure complex, diverse , and the interaction between adjacent functional groups , such that the polarity of the lubricant is more difficult to determine the size , which resulted in a polar lubricant alone to infer lubricant and lubrication lubricant is actually played by the difference between the lubrication is far beyond people's imagination .

Plasticizer

 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 used in different objects, but its effect is often not the impact modifier  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 low molecular polyethylene  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 types of internal plasticizer
Internal plasticizer is actually part of the 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  carbon black 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 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

plasticizer cause male infertility

  Plasticizer is causing male infertility: Phthalates are a class of plastics used in the main plasticizer and  PVC processing aid flexible agent, because all kinds of plastic packaging fast food appeared in large numbers, making contact with people on the plasticizer opportunities have increased significantly. After 10 years of research found that phthalates in plastics plasticizer may be the cause behind male infertility. In animal experiments, we gave mice fed plasticizers and found decreased testis weight, smaller size, and degenerative changes in testes appeared decreased sperm count, sperm deformity rate increased. In certain doses, associated with the heat stabilizer for pipe  two kinds of plasticizers used in mouse bone marrow micronucleus and sperm abnormality test results were positive. This shows that the plasticizer is a heritable cause chromosomal aberrations cleavage agent. Plasticizers body excretory phase current is not clear if the daily intake, it is easy to accumulate in the body, resulting in toxic effects. In order to reduce the exposure of childbearing age youth plasticizer, we recommend that antimony flame retardant  young people of childbearing age to take the following self-protection measures: ① eat instant food in plastic packaging. ② not directly heated plastic packaged foods (such as bags of milk). ③ not in plastic food storage container and heated in a microwave. ④ without plastic bags placed hot fritters, cakes, Gao, hemp groups, and other fried fried foods. ⑤ the roadside food vendors to provide colorful small plastic bag shut. ⑥ strict implementation of 1 June 2008 China began to implement the plastic limit. This is not only beneficial to protect the environment, maintain the ecological balance, and help reduce the health hazards of plasticizers, especially for childbearing potential threat to the male reproductive capacity.

retardants Overview

Most plastics are flammable. With the plastic in the construction,

furniture, transportation, aviation, aerospace, electrical and other

aspects of the widely used to improve the acrylic processing  flame retardancy of plastics has

become a very urgent issue. Inhibiting polymer flame retardant is a class

of flammability additives, they are mostly of the Periodic Table Ⅴ, Ⅶ Ⅲ

elements and compounds; especially phosphorus, bromine, chlorine, antimony

and aluminum compounds. Sub-additive flame retardants and reactive types.

Flame retardant halogen-containing primarily phosphate and phosphate, a

halogenated hydrocarbon, antimony oxide, and aluminum hydroxide. Advantage

is easy to use and adaptable. However, the addition of capacity of 10% to

30%, often affect the performance of plastics. Reactive flame retardant

containing the elements actually monomer, it has little effect on the

plastic properties. Common reactive flame retardants, halogenated

anhydrides such as for polyesters, for epoxy resins of tetrabromobisphenol

A, and phosphorus for polyurethane polyol. Initially flame retardants used

in the U.S., after the 1960s, the tio2 anatase  amount of surge current usage after

plasticizer. Consuming most varieties of plastic flame retardant polyvinyl

chloride, polystyrene, polyurethane foam, unsaturated polyester, ABS resin

and polypropylene.
Most plastic is flammable, its products, which brought a lot of application

security risks. Precisely, flame retardants, flame retardants known as more

appropriate, because "flame" contains two meanings flame retardant and

smoke suppression, compared with the yellow iron oxide  broader concept of flame retardants.

However, long time, people have become accustomed to the concept of use of

flame retardants, so the current literature is actually referred to in the

flame retardant and smoke suppression effect of functional additives in

general.