The main role of intenal lubricant and its presentation

 intenal lubricant When the temperature reached 190 ℃, the primary particles begin to melt , polar lubricant , because good
compatibility with polyvinyl chloride , polyvinyl integrate most of the melt, the melt from the plasticizing effect in the . Due to
the non-polar lubricant solution compatible with Titanium dioxide rutile  the PVC melt is very small, most of the surface and pressed onto the interface
between the melt processing equipment , then, the metal melt is not a direct movement contacts , but with the viscosity of the lubricant liquid layer small stationary contact , the friction coefficient is less than a direct contact with the metal to be
smaller , which play an external lubricant is a lubricant such reasons . Tofurther illustrate the various stages of different
plastics processing requirements for lubricants , now extrusion PVC example: internal and external lubricant to illustrate the
major role played by the various parts of the processing machinery . Early  lubricant effect. This is a segment from the feed
zone to compress the time zone. PVC is mixed in the region and starts plasticization . Here the lubricant required to increase the
fluidity of the plastic to ensure smooth Calcium stearate  feeding . Therefore , in this region the main functions within the lubrication .  mid-
lubricant effect area. This is the region of the compression section to the metering section , and plasticized polyvinyl chloride
powder is completed here , in this process, the lubricant is required to reduce the friction during the flow of plastic to ensure
that the melt flow . Therefore , in this area mainly outside the lubrication function , intenal lubricant within the lubricant can
be reduced , but the melt flow , is also indispensable .  post lubrication. This is from the metering section to the metal mold
area. Here the melt is pressurized and fed into the molding die . In this region, the lubricant can reduce the required adhesion
between the melt and the mold surface , to facilitate the release , it is still the primary role of the lubricant . Since the
integral process , the general inner and outer lubrication of both the lubricant or lubricant compound . The role of the second
chapter of a lubricant to reduce melt viscosity in general, low melt viscosity , good fluidity , easy molding . Increasing the
temperature increases the thermal energy of the molecular motion , the relative reduction of the intermolecular forces , the melt
viscosity decreased, increased mobility . Polyvinyl chloride resin decomposition temperature of about 130 ~ 140 ℃, well below the
processing temperature of rigid PVC (185 ~ 205 ℃), so that by increasing the temperature to reduce the viscosity of the resin melt
is limited. Therefore, raising the temperature also means increased energy consumption , while extending the product cooling time ,
reducing production efficiency. Reducing the Stabilizers for pipe  molecular weight of the resin , the resin viscosity can be reduced while also reducing
the Vicat softening point and other mechanical properties. Adding a lubricant , and its purpose is to reduce the melt viscosity of
the resin to improve the fluidity of the polymer . 2 , to promote inter- capillary adsorption ( chemisorption ) Due to the
plasticizing effect of the lubricant with polar , plasticized resin is formed in front of the gap between the resin particles to
the segment between the resin particles and molecules . Junction by polar group phase lubricant into Los combined with resin chain , thus weakening the force between the resin particles and molecules between thechain is broken . In this case, the branch
subjected to heat and shear force , the molecular chains of the resin can be easily entangled original stretch , each expansion ,
penetration, the boundaries between the resin particles disappear , thus promoting plasticization . 3, to reduce the frictional
heat , the friction material is typically a thermoplastic , resin melt production process requires sufficient melt strength to
produce . Example ① rolling production process - plate production . Requested the extension of the melt resin peeling rollers ,
there must be adequate melt strength. Example ② blow molding production - blowing production . Requirements melt sufficient melt
strength to ensure that when a plastic , not because of increased melt strength and melt enough natural droop , resulting in
products of uneven thickness . The melt strength and melt viscosity of the size are dependent on the size of the force in the resin
between molecular chains . Therefore, in general, the melt strength and melt viscosity of the resin between the resin in the
molecule are different in different circumstances such that the expression of the role . The melt strength and melt viscosity
generally proportional to : the greater the melt strength, melt viscosity increases. The greater the melt viscosity of the resin ,
molding the greater the shearing force . The greater the shear force , the greater the friction . The principle for easy
decomposition characteristics of PVC is extremely unfavorable , can cause localized overheating within the resin decomposition.
Quality of both internal and external lubricants lubricants , lubricating parts of the outer rigid PVC can reduce frictional heat.
Internal lubrication also reduces the viscosity and the melt strength of the resin . Therefore, reducing the melt viscosity of the
resin , reduce friction heat , friction, force must be reduced within the resin molecules. Reduction of the interaction between the
resin melt , resulting in decrease in strength of the resin melt . G32-1 compound grease polar functional group is to reduce the
viscosity of the polyvinyl chloride resin , plasticized promote critical . Increasing the polarity of the non-polar group and a
lubricated interface PVC , PVC space segment only increased displacement or movement of the base to increase lubricity and reduce
internal friction and due to friction movement of the segments caused by displacement or generation of heat . 4 , a mixture of a
polar resin adhesive adhering hot metal surfaces of processing equipment is veryimportant . Initial feed processing equipment ,
low temperature, the resin mixture adhesion to metals , such as proper adhesion of the screw and barrel in the extrusion process .
In the calendering process , such as appropriate viscosity resin roller double roller can effectively heat and mechanical energy
conduction promoting plasticization . If the material over adhesion, the polymer local residence time is too long, causing
localized overheating of materials , thermal degradation , affecting product quality and appearance. If alone , such as : PE wax,
paraffin wax , stearic acid and other non -polar materials will " slip " is not conducive to rapid production . Adding an
appropriate amount G32-1 polymer composite lubricant grease to balance a reasonable balance mechanism in the polymer is the key . 5 , the delay in the plasticized polyvinyl chloride resin blend , the PE melting wax, paraffin wax , stearic acid and other non -
polar substances , wetting of the resin solid particles

Pack nuclear tribasic lead sulfate is a low- lead WSD PVC lubricant stabilizers

Pack nuclear tribasic lead sulfate is a low- lead PVC heat stabilizers , due to its creative use of nuclear technology package will be is still widely used, a large proportion of the market in the PVC stabilizer stabilizer tribasic lead sulfate coated surfaces made ​​of fine particles of inert filler novel packet core tribasic lead sulfate , significantly organic pigments reducing the toxic levels of lead and maintain their excellent performance and stability. Which are widely used in the processing of PVC pipes, fittings , profiles , wire and cable , pinch and so on.
In this paper, synthetic bag nuclear tribasic lead sulfate for a more in-depth research , experimental study of the optimal synthesis conditions . Methods are inert or semi- inert material selected as the core , its surface is uniformly coated with a layer of a tribasic lead sulfate thickness. Through the experiment, the reaction involved in the process parameters and reaction conditions ( such as reaction temperature, concentration of lead , covering the amount of water to feed ratio ) were optimized to prepare a Optical brightener low lead content package nuclear tribasic lead sulfate with traditional tribasic lead sulfate were compared with experiments. Experimental results show that : In making the overall performance is not affected all aspects of the premise of reducing the lead content of the experiment , thus reducing costs , reducing environmental pollution , broadening the sources of raw materials , with good economic and social benefits.

In the actual performance of the lubricant with a variety of plastics processing

The actual performance of the lubricant with a variety of plastic materials, such as kneading, the rolling process to prevent adhesion of the polymer cartridge suppressing friction and heat, and the load torque decreases kneading, thereby preventing the polymer material thermal degradation. In the extrusion molding, to improve flowability, the polymer material and  WSD one pack stabilizer to improve adhesion of the barrel and the die, to prevent and reduce retentate. Another film but also to improve the appearance and gloss. From the perspective of processing machinery, in mixing, rolling, etc. slush molding process, external lubricant has an important role in extrusion, injection molding, the lubricant is more effective.
The amount of lubricant is generally 0.5% to 1%, the choice should pay attention to the following aspects:
Flow properties (1) of the polymer molding process needs have been met, then the role of the main considerations lubrication to ensure internal and external balance;
(2) the effectiveness of the lubrication, it can be in the temperature during molding, the plastic surface to form a complete liquid film, and may be so close to the melting point of the lubricant outside the molding temperature, but to a difference of 10 ℃ ~ 30 ℃ order to form a complete film;
(3) When selecting a lubricant in production, should make WSD PVC lubricants  it meet the following requirements:
(4) compatibility with moderate size, internal, external lubrication balance resin; non-blooming, easy to scale;
(5) surface gravity is small, small viscosity, at the interface of scalable, easy to form an interface layer;
(6) as far as possible without reducing the WSD Polyethylene wax  excellent properties of the polymer, does not affect the performance of the secondary processing of plastics;
(6) itself is excellent in heat resistance and chemical stability, does not decompose during processing, non-volatile;
(7) non-corrosive, does not pollute the film, there is no toxicity.

intenal lubricant use some of the rules

(1) Lubrication focus in extrusion, injection and other processing within

the lubrication in rolling processing outside the focus. (2) the use of

copolymer resin, an additional external lubricant than pure PVC resin.
(3) the formulation should note the WSD one pack stabilizer  following:
① hard than soft lubricant consumption.
② to pay attention to the inherent slip stabilizers. ③ filler amount is

large, the use of large amounts of lubricants; ④ attention inside and

outside lubrication lubrication balance.
⑤ product performance requirements, such as surface appearance,

mechanical properties and hot.
After the excess amount, due to pressure from the lower extrusion die

leaving the film was blown; (1) the amount  WSD Stabilizers for pipe of blow molding too little

lubricant can cause mold and thin-film layer between the adhesive stick,

causing processing difficulties: for example as follows cracking in the

seams. Add appropriate lubricants such as stearic acid monoglyceride is

advantageous, the amount is generally not more than 1% (2) precipitates

easily processed with the formulation should be considered a strong

binding force to the metal lubricant is formed like a lubricant agent

films (such as paraffin). (3) cable with plastic products, electrical

properties and generally require a higher quality stability, generally use

only acid soap as a lubricant. Because stearic acid has a corrosive effect

on metal wire, it is generally not.
(4) a metal soap as a lubricant may be, but WSD Azodicarbonamide  not excessive amount of HCl

due to the effect of soaps and free fatty acids can lead to increased

blooming phenomenon. Also note the strong lead stearate lubricant, when

the amount of excess plastic hard plasticizers, calcium stearate at high

temperatures but stick Kun.

The main role of dibasic lead phosphite

English name : Dibasic lead Phosphite
MF : 2PbO · PbHPO3 · H2O
Properties: white or slightly yellow powder. Sweet poisonous. Density of 6.1 , the refractive index of 2.25 , at about 200 ℃ becomes gray and black , about 450 ℃ turns yellow . And all of the water-insoluble WSD aluminium stearate  organic solvent , dissolved in hydrochloric acid , nitric acid. Has excellent weather resistance properties , thermal stability, electrical insulating properties , and resistance to oxidation and ultraviolet shielding performance.
Uses : polyvinyl chloride and polyvinyl chloride / polyethylene copolymer heat stabilizer. Mainly used for opaque hard and soft WSD Titanium dioxide rutile  goods, especially outdoor cables, building panels , corrugated sheet , pipe and so on. Dihydrochloride ( short) is a monomer lead salt , lead salt stabilizer is a composite material , the effect is not used alone , the need for different uses , tribasic lead sulfate was added , and the lead oxide in the formulation can lead stearate use the successful application of nano-scale high-purity rare earth elements BAUER (BAOHUA) efficient , non-toxic calcium zinc stabilizers rare in an efficient , high WSD PVC flame retardant  environmental known. No smell, dispersibility , fluidity, stability, weather resistance , and excellent transparency . Is the best environmental alternative to organic tin compound lead, lead and rare earth compound stabilizer .

Some simple request intenal lubricant's

pvc lubricants lubricants can be divided into two kinds of internal and external lubricant pvc pvc, pvc external lubricant main role is to improve the frictional heat the metal surface of the polymer melt and processing equipment. It is less compatible with the polymer is easy to migrate out from the melt, so the lubrication can be formed in a thin WSD Polyethylene wax  layer of plastic and metal melt interface. pvc lubricants have good compatibility with the polymer properties, which serves to reduce the effect of cohesion between the polymer molecules within the polymer, thereby improving the plastic melt in the heat of friction and melt flowability. Commonly used lubricants are stearic acid and salts thereof outside; internal lubricant is a low molecular weight polymer. Function of some other lubricants. Each lubricant has actually can achieve a required role in internal and external lubrication always together, but in a way more prominent. A lubricant with different polymers under different processing conditions or exhibit different lubrication, such as high temperature, high pressure, pvc in the lubricant will be squeezed out and become pvc external lubricant. From the perspective of processing machinery, in mixing, rolling, etc. slush molding process, external lubricant has an important role in extrusion, injection molding, the lubricant is more effective. The amount of lubricant is generally 0.5% to 1%, the choice should pay attention to the following aspects: (1) the flow properties of the polymer molding process needs have been met, then the role of the main considerations lubrication to ensure internal and external balance; ( 2) lubrication is valid, it can be in the temperature during molding, the plastic surface to form a complete liquid film, and may be so close to the melting point of the lubricant outside the molding temperature, but to a difference of 10 ℃ ~ 30 ℃ order to form a complete film; (3) When selecting a lubricant in production should be so as to achieve the following requirements: (4) moderate size, the internal balance and external lubrication resin compatibility effect; non-blooming, easy scaling; (5) surface gravity is small, small viscosity, the expansion of the interface, easy to form an interface layer;
(6) as far as possible without reducing the  WSD Metallic stearate excellent properties of the polymer, does not affect the performance of the secondary processing of plastics;
(6) itself is excellent in heat resistance and chemical stability, does not decompose during processing, non-volatile;
(7) non-corrosive, does not pollute the film, there is no toxicity.
However, the mere use of a lubricant is often difficult to achieve the purpose, to be used in combination of several lubricants, lubricating composite developed rapidly in recent years, the choice can be to look at the role of multi-angle lubricant. Commonly used lubricants are stearic acid, butyl stearate, oleic acid amide, ethylene bis stearic acid amide.
Many substances can be used as a lubricant wax, natural waxes such as liquid paraffin (mineral oil), microcrystalline wax, etc., but the effect is mixed. Natural waxes more to do with external lubrication, the lubricant can be used as a variety of plastic, a release agent, generally the amount of 0.2 ~ 1phr, but its compatibility, thermal stability and dispersibility is not good, the amount is not too large, and preferably lubricants and use; while shortening more to do with PVC, PS, lubricants, lubricating properties, thermal stability is also very good, the general amount 0.5phr they are drug-free, can be used for food packaging. Another kind of microcrystalline wax: in the plastic processing is also used as a lubricant in an amount of 1 ~ 2Phr, good thermal stability and lubricating property than normal paraffins. Low molecular weight polymers are widely used as a lubricant such as polyethylene wax, low molecular weight polypropylene, the inner and  WSD Chlorinated paraffin outer are better lubricity, and non-toxic. Polyethylene wax materials suitable for PVC extrusion, calendering, the amount is generally 0.1 ~ 1phr, processing efficiency can be improved to prevent the adhesion of the film to improve the dispersion of fillers or pigments, compatibility and transparency is not good; irregular low molecular weight polypropylene as the structure rigid PVC, PE lubricant, excellent performance, other additives to improve dispersibility.

The main reason heat stabilizer for shoes heat discoloration

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 Plastic impact modifier  actual heat stabilizers have

different functions due to exhibit different thermal stability

characteristics, can be divided into early-type, long-term, intermediate-

and versatile four.
Shandong Zouping, this piece of land has been brought up generation phase

of Fan, its famous through the ages "first and worry about the world,

after the world music", popular for generations lips.
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  Chlorinated paraffin 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 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 Polyethylene wax  features, while a variety of

mechanisms can stabilize PVC, transformation products do not have

catalytic activity, and therefore both excellent initial and long-term

thermal stability effect.

Some of the major components of plastic lubricant

We are not a pure plastic material generally used , which is made ​​of material prepared by a number . Wherein the polymer (or synthetic resin ) is the main component of plastic, in addition , in order to improve the performance of plastics , but also add a variety of auxiliary materials such as fillers , plasticizers , lubricants , stabilizers in the polymer, coloring agents , in order to become a good performance plastics.
A synthetic resin, synthetic resin is a main component of plastic, the plastic content is generally 40% to 100%. As  WSD aluminium stearate the content of large, but the nature of the resin often determines the nature of plastic, so people often plastic resin as a synonym . For example, polyvinyl chloride resin and PVC , phenolic resin and phenolic confused. In fact, resins and plastics are two different concepts. Original polymer resin is a raw , it is not only used to make plastics , but also coatings, adhesives and synthetic materials. In addition to the very small number of plastic resin containing 100% , the majority of plastics , in addition to the main component of the resin , but also need to add other substances.
2 , also known as filler of fillers , which can improve the strength and resistance to heat , and cost . E.g. a phenolic resin is added after the flour can greatly reduce costs, the most inexpensive one phenolic plastics , as well as significantly improved mechanical strength. The filler may be divided into two types of inorganic fillers and organic fillers , such as wood flour former , rags , paper and various textile fibers , which, as glass fibers, diatomaceous earth , asbestos , carbon black and the like.
3 , a plasticizer , and a plasticizer to increase the flexibility of the plastic plasticity , reducing brittleness , so that the plastic processibility . Plasticizers are generally miscible with the resin , non-toxic , odorless, light, heat stable, high boiling point organic compounds, the most commonly used phthalates . E.g., the production of PVC , plasticizer , if adding more soft PVC can be obtained , if not add plasticizers or less (the amount of < 10% ) , then a rigid PVC .
4 , a stabilizer to prevent the WSD Chrolinated polyethylene  synthetic resin by the action of light and heat during use in the processing and decomposition and destruction, extended service life , to add the stabilizer in plastics . Commonly used are stearates, such as epoxy resin .
5 , plastic colorant colorants can have a variety of bright , beautiful colors. The organic dyes and inorganic pigments used as a colorant . Specialty Plastics
6 , the lubricant is to prevent the lubricant in the molding of plastic stick on the metal mold, while allowing a smooth plastic surface appearance . Commonly used lubricants are stearic acid , calcium and magnesium salts and the like .
7 antioxidants prevent the plastic molding or WSD Chlorinated paraffin  heating at high temperature thermal oxidation during use , leaving yellow plastic , hair crack , etc. In addition to the above additives , the plastic may also be added flame retardants, foaming agents, antistatic agents so as to meet different requirements .

The main performance lubricants commonly used PVC

Common PVC lubricants [2] The main properties are as follows: calcium (1) stearic acid:
White powder, mp 148-155 ℃, non-toxic, have excellent lubricity and workability, no sulfide contamination with lead and basic lead salt soap and use, can increase the rate of gelation, the dosage is generally 0.1-0.4PHR.
(2) polyethylene wax
White or light yellow powder or granules contain small amounts of oxidized polyethylene wax, although polar group is still compatible with the PVC, but the higher the efficiency of the lubrication can be improved lubricity between the polymer and the metal, improving the WSD PVC lubricants  extrusion efficiency, improve a colorant dispersion, gives the product a good transparency and gloss. The amount of 0.1-0.5PHR.
(3) stearate
White or light yellow granules, mp 70-71 ℃. Slow evaporation at 90-100 ℃, as external lubricant in PVC processing hardware, the amount is usually 0.2-0.5PHR, and have the effect of preventing scale chromatography, but easy to use excessive blooming.
(4) Glyceryl stearate
Powder substance, melting point 85-87 ℃, has excellent heat resistance and flowability, increase the amount of filler, may contribute to the plasticizing. And waxes and use, to improve the thermal stability of PVC-U. General amount of 0.2-0.6PHR.
In practice it was found that when two or more with the use of the lubricant, when used alone with the emergence of WSD Titanium dioxide rutile  a different effect. In profile formulations, the way they use complex
(5) Paraffin
Melting point 57-63 ℃, no polar group, is a typical external lubricant. Because of its low melting point, easy to evaporate, a small melt viscosity, only within a narrow range from lubrication, suitable for single, twin-screw extruder, the general amount of 0.1-0.8PHR. This product is poor transparency, easy to whiten.
(6) Polyethylene wax
White powder, a softening point of about 100-117 ℃, due to its relatively large molecular weight, high melting  WSD Stabilizers for pipe point, low volatility and therefore at a higher temperature and shear rate, also showed significant lubricating effect. For hard PVC single, twin-screw extruder, the usual dose is 0.1-0.5PHR.

Pvc composite stabilizer when using the issues that need attention

Now inside the home when the renovation will always be involved in a variety of coatings, paints, latex, etc., and pvc composite stabilizer is also a large number of these kind of decoration materials. As we all know, this material is a polymer compound used in the process, we need to pay attention to a lot of precautions.
First of all, before we open the WSD PVC lubricants  packaging of this material, we must ensure that the air circulation around. Because pvc composite stabilizer is highly volatile characteristics, while some of the material composition if not timely flow will cause some damage to the human body in a small space. This is why after the house renovated, within three months do not advise clients to stay, but you want to come out of vacant houses, ventilation diffuser.
Ensure that the air circulation around after we unpack, they also need to know that this material is a liquid or powder form. Is divided into two kinds of liquid and solid existence Pvc composite stabilizer under normal circumstances. If it is a liquid, we use the process on  the need to pay attention to a lot of problems, can not let these material gets on our skin, but can not let our mouth ENT inside the eye gets these WSD PVC flame retardant  things. When in use must be primarily own security.
The powdery composite stabilizer, we need to keep dry surroundings, pay attention to the fire. In general, a powdery stabilizer liquid stabilizer avoidance safer convenience. But nevertheless, we are both in use which we still need to pay attention to their own protection. As long as we have a reasonable use of these materials, while WSD Azodicarbonamide  avoiding disadvantages, we can bring endless benefits for our building homes.

PVC lubricants commonly used in the seven species

PVC lubricant is usually tasteless , odorless , non-toxic light yellow waxy solid or flake . Physical indicators: PVC lubricants in the plastics industry is mainly used as mold release agents , plasticizers , antistatic agents , especially for plastic foam products, anti-shrinkage agents. In the production of PVC products as lubricants , and alkyd resin can be used as a modifier , a plasticizer of cellulose nitrate . PVC lubricants commonly used in seven types : calcium ( 1 ) stearic acid : white aluminium stearate  powder , melting point 148-155 ℃, non-toxic, have excellent lubricity and machining , non- sulfide pollution , and basic lead salts and lead soap and use, can increase the rate of gelation , the dosage is generally 0.1-0.4PHR. ( 2 ) white or yellow oxidized polyethylene wax powder or granules , containing a small amount of the oxidized polyethylene wax, a polar group , although still not compatible with PVC, but the higher the efficiency of the lubrication can be improved lubricity between the polymer and the metal improve extrusion efficiency , improve the dispersibility of the colorant , giving the product a good transparency and gloss. The amount of 0.1-0.5PHR. ( 3 ) stearic white or slightly yellow granules , mp 70-71 ℃. Slow evaporation at 90-100 ℃, as external lubricant in PVC processing hardware , the amount is usually 0.2-0.5PHR, and have the effect of preventing scale chromatography , but easy to use excessive blooming . ( 4 ) glyceryl stearate powder substance , melting at 85-87 ℃, has excellent heat resistance and flowability , increase the amount of filler , may contribute to the plasticizing . And waxes and use, to improve the thermal stability of PVC-U . General amount of 0.2-0.6PHR. In  Chrolinated polyethylene practice it was found that when two or more with the use of the lubricant , when used alone with the emergence of a different effect . In profile formulations, they use complex methods ( 5 ) wax melting point 57-63 ℃, no polar group , is a typical external lubricant . Because of its low melting point, easy to evaporate , a small melt viscosity , only within a narrow range from lubrication, suitable for single , twin-screw extruder , the general amount of 0.1-0.8PHR. This product is poor transparency , easy to whiten.
( 6 ) polyethylene wax white powder, a softening point of about 100-117 ℃, due to its relatively large molecular Chlorinated paraffin  weight , high melting point , low volatility and therefore at a higher temperature and shear rate , also showed significant lubricating effect. For hard PVC single , twin-screw extruder , the usual dose is 0.1-0.5PHR.

The configuration of the flame retardant treatment solution

"Fire escape" Wood retardant and water ratio is generally 1:4-1:6 (weight ratio), the more difficult to recommend the use of wood fire retardant treatment solution higher concentrations.
Fire-retardant treated wood:
General treatment using the vacuum Plastic impact modifier  pressure, the vacuum time is usually 30-60 minutes before, most broadleaf forest (such as birch, linden, elm) pressing time is 30-45 minutes, a pressure of 1.2 trillion fear. Red pine infusion time is 2-3 hours at a pressure of 1.4 MPa, impregnation depth 8-10 mm.
Each time after the treatment liquid can be recycled, the concentration of the treatment solution does not change due to the number of treated wood and change. Retardant lumber production process - vacuum pressure impregnation profile:
1 kg in the container into the amount  stearate aluminum of water, add wood flame, stirring, dissolving into the wood fire retardant transparent solution;
(2) high-pressure impregnation of wood into the pot, cover lid;
3 is evacuated to 600 ~ 650 mm Hg, for 30 to 60 minutes; 4 retardant tank timber opens the connection of the valve, depend on the vacuum pressure impregnation of wood flame into the tank, filled with a flame retardant impregnation of wood cans vacuum was released, close the  PVC shoes stabilizer vacuum valve; 5. slowly pressurized to 1.2 ~ 1.4MPa, and maintained for 2 to 4 hours;
6 Wood Flame absorption: Dry Wood Flame / dry timber = 10 to 15%. Take 4 to 6 in advance with the specifications of timber, label, weighing, the sample dispersion into the dipping tank; immersion period, remove the sample, weighed to calculate the absorption retardant timber. If insufficient absorption retardant timber, extending the immersion time.

Which uses magnesium hydroxide

Magnesium hydroxide is a white crystal or powder. English Name: Magnesium hydroxide Molecular formula: Mg (OH) 2 Molecular weight: 58.32 aqueous alkaline. Bulk density: 2.36g/cm3. Soluble in acid and ammonium salt solution, almost insoluble in water and alcohol. Solubility  in water (18 ℃) is 0.0009g/100g. Easy to absorb carbon dioxide in  air. In PVC stabilizer for cable  the alkaline solution is heated to above 200 ℃ becomes hexagonal crystal system. At 350 ℃ decomposition of magnesium oxide and water. Higher than 500 ℃, lose water into magnesium oxide.
Use of abundant local resources through scientific process underground brine synthesis of new products, the indicators can be based on user needs and the size and design and production. Excellent quality, from the professional production. "Magnesium tyrants" brand of high-purity  low molecular polyethylene magnesium is your ideal choice. Uses: magnesium hydroxide is a plastic, rubber   excellent flame retardant. Widely used in PP, PE, EVA, PVC, ABS, HIPS, PA, epoxy, rubber, paint. As Mg (OH) 2 the thermal decomposition temperature (310 ° C) is high, is more suitable for processing high temperature engineering plastics such as nylon 6 (PA6, PA66). Generally, the flame retardant aluminum hydroxide ATH index, the oxygen index has been significantly improved, and the magnesium hydroxide MH better effect on the smoke, and thus, in actual use, they are complex in order to achieve Flame and smoke the better results.

Titanium dioxide industry should focus on some of the issues of environmental protection

Environment is the only place where we live , Mother Earth as we deal with every day in excess of garbage , but apparently excessive garbage Mother Earth has been unable to make too much for us to do things . So no matter what we have to first think of our living environment . For Acrylic processing aid  environmental protection is titanium dioxide industry is no exception , then we go to see the titanium dioxide industry it.
With the deepening awareness of environmental protection , a lot of the industry's products are increasingly focused on adding environmental elements. Titanium dioxide industry , but also should pay attention to protect the environment. Focus on product quality , environmentally friendly products concerned .
As we all know , paper, steel , coal and other heavy polluting industries belong , in the paper industry applications also belong to the heavy pollution of titanium products, titanium dioxide industry also belong to the heavily polluting industries. With the relevant departments of the importance of high- polluting industries , the Department is developing titanium dioxide industry 's pollution control policies . Many companies also  titanium dioxide strengthened titanium dioxide for the prevention and treatment of pollutants , and strive to do a good job fast pace of transformation and upgrading . As we all know, the chemical name is titanium dioxide , titanium dioxide, which is recognized as the world's best performance of white pigment . While pollution is a major problem, but titanium dioxide business environment very seriously . Because, as long as they focus on the environment , the enterprise has a better development . A business to long-term development , in addition to high -quality products and quality services , but also should have some sense of social responsibility . After all, is a commercial society , in the family exist, and can not simply not pay attention to the development of the views of the people around . In the development of enterprises do not care about an important part of environmental protection . Companies only care about their Plastic chemical  own economic development , but also pay attention to social benefits, in order to have a longer-term development .
 Titanium dioxide industry needs to pay attention to environmental protection , which is a manifestation of social responsibility . Of course, the titanium dioxide industry , there are many companies to focus on quality and titanium dioxide business environment , will combine to make the idea as a business development momentum.

Zinc stearate, plays an important role in the coating

Zinc stearate is mainly used in paint wood primer , since filling role in enhancing polish . Transparency, transparency of the coating effect is small, especially for transparent primer. With the direct method zinc stearate manufacturers slowly increased competitive pressures in the domestic zinc stearate coating performance has been dramatically improved. Zinc stearate coating , in addition to focusing on grinding and transparent , but also some other factors such as oil absorption , thickening , particle size, dispersion , etc. on the overall performance of methyl tin stabilizer  wood have also been affected. Zinc stearate mainly in wood primer has several technical indicators affect its paint performance: 1, polish
In wood primer , grinding performance in the paint is a very important indicator , the usual test method is the same coating formulation , spray plate while at the same time grinding test , there is no fixed standard . 2 , in a transparent primer transparency , transparency direct impact on the aesthetic appearance of wood . Thus , the production of zinc stearate, water can not be used in the transparent wood , mainly because of too many impurities . The direct method in the production of zinc stearate is able to meet the requirements of purity , but also very high demands on the process , different production processes a great impact on the transparency , there may be slight differences on the process of transparency led to huge differences 3 , thickening production of coatings thickened manufacturers of zinc stearate is acceptable because zinc stearate added to the paint finished products , to determine its viscosity , the factory already settled indicator , the error is even in ± 500mP · s, so the test method of thickening zinc stearate is generally used to test a rotational viscometer , the viscosity and good  yellow iron oxide dispersion if just a few hours after the deviation is greater than the viscosity 500mP · s, as thickening 4 , oil absorption amount of oil and thickening think not the same concept , oil volume ratio of added amount in the same conditions, make the product viscosity, the viscosity does not exceed a period of time the error value ± 500mP · s. Oil Absorption test standards "DIN ENISO787-5-1995", usually in the PU coating on the oil absorption is not much demand because of the production will not cause much impact, paint manufacturers have high requirements on oil absorption , it may be some paint manufacturers to add more solvent , but want to reduce solvent evaporation , we must find some high oil absorption material added to it , and the amount of zinc stearate oil relative to other additives are higher oil absorption 5 additives , particle size is to indicate the size of the indicator particles of zinc stearate , are  titanium dioxide anatase generally used to measure the fineness . The easiest test is usually the result fineness is the fastest scraper fineness, usually in alkyd resin by adding a certain percentage of zinc powder dispersion , then add a little solvent viscosity good tune , and then use Fineness gauge testing, such test results will be higher than the actual fineness little too large , because the resin powder is wrapped in possession of a certain thickness , but as long as comparable and reproducible set standards in this test method can be to measure whether the excessive fineness . 6 , dispersed in the paint manufacturing process , there are many manufacturers dispersion problems mentioned . Under normal circumstances , zinc stearate dispersed in the paint is not a problem , but in the production of zinc stearate , there will be some indicators will cause the dispersion of certain effects, such as zinc stearate acid value is too high, the temperature is too high semi workers pressure occurs when the package is too severe zinc in the coating dispersion bad problem , but if the water is too high in zinc crystals also occur problems are considered dispersion good.

PVC heat stabilizer in the process is an indispensable additive

PVC heat stabilizers are indispensable in the process additives , as human beings living on their own health and environmental concerns surrounding gradual increase awareness of the world has promulgated a series of measures to limit the use of heavy metal heat stabilizers .
Outside the industry generally believe that understanding of PVC heat stabilizers environmental protection has become an tribasic lead sulphate  irreversible trend , PVC heat stabilizers in the process of environmental protection , research and development non-toxic, non-polluting , composite , and efficient heat stabilizers have been more widely application .
PVC resin having a self- catalytic release HCL, or to instability of the PVC resin produced by reflection from the addition polyalkylene structure , to prevent or reduce the decomposition of PVC resin . Generally used in the formulation of the thermal stabilizer features, functions and products required to consider. Here are a few people stabilizer features:
1 lead salt stabilizer is mainly used  vegetable stearic acid in hard products in . Lead salt stabilizer has good thermal stability , excellent electrical properties , low cost and so on. But its toxicity, easily contaminated products, can only produce opaque products. In recent years, large numbers of composite stabilizer , one-component stabilizer has the danger of being replaced . Composite stabilizer is characterized by specific and strong , pollution, processing enterprises, the advantages of simple ingredients . However, no uniform standard, so each of the composite stabilizer vary greatly.
2 barium cadmium -based stabilizers is white foaming agent  better performance of a heat stabilizers . Wider use of PVC plastic sheeting . Usually barium cadmium and zinc and organic phosphite antioxidant and use .
3 calcium zinc stabilizers can be used as non-toxic stabilizers used in food packaging and medical devices, pharmaceutical packaging, but its stability is relatively low education , a large amount of calcium -based stabilizers when transparency is poor , easy to spray cream. Calcium zinc stabilizers are usually used polyols and antioxidants to improve its performance, the country has recently been used in rigid pipe Ca-Zn compound stabilizer appears.
4 organotin heat stabilizers better performance for rigid PVC products with a better variety of transparent products , especially toxic octyl tin packaging products almost become indispensable stabilizer.

PVC processing some of the main trends

Business cards PVC futures , that the subject matter as pvc futures varieties. Namely polyvinyl chloride PVC (polyvinylchloride), the thermoplastic resin . With steel, wood, cement and said the four  plastic processing aid basic building materials, with PP, PE, ABS, PS and said five general-purpose resins, chlor-alkali industry is the largest organic consumption of chlorine products. Contents Introduction PVC PVC PVC physicochemical properties futures trade analysis profile status Exports Imports Consumption of PVC PVC futures Consumption Consumption regional characteristics of Chinese PVC PVC PVC futures main function is to provide enterprise risk avoidance and transfer tool for price discovery help companies out of the blind helps optimize PVC PVC futures price formation mechanism procedures to comply with the  red iron oxide standard delivery main delivery point delivery of PVC benchmark delivery to site selection and non- delivery to the reference design PVC futures risk premiums and discounts between the control and management methods ( a ) price limits system design ( two ) trading margin system design ( three ) position limits institutional design ( four ) forced open system, the large trade reporting system designed to spot PVC PVC futures most active areas of contrast with the electronic trading market PVC futures market price factors 1 , 2 supply and tio2 anatase  demand changes in the international crude oil market volatility four , five national policy changes , raw material price changes 6 , the export situation PVC futures and spot market relations existing PVC futures investment value ( a ) carry trade , a stable income through 2 of arbitrage , arbitrage through the plan period , three , through cross- breed

Wetting dispersant add program

Wetting the pigment dispersing agent is generally added when the ingredients to make the grinding and dispersion of the pigment surface adsorption, to achieve the desired purpose. If the compound used low molecular polyethylene  in the non-polar hard dispersed pigment, preferably blended in a small amount first additive resin solution and then mixed with the pigment soaked, so that the application would be more effective. Pigment dispersion
The dispersion of pigment in the paint process is more complicated, but at least through three processes, namely wet depolymerization (dispersion) and stabilized.
Providing paint pigment production, the production of the pigment particles formed are subtle, and its particle size heat stabilizer for shoes  is generally in between 5nm to 1um, the dispersion system can be formed easily.
But the paint pigment plant put into production, mostly in the original-sized particles, agglomerates and aggregates mixtures exist.
Sized particles: a pigment formed in the manufacturing process of associating a single crystal or crystals is relatively fine grain size.
Agglomerates: the original sized particles connected edges and corners, a combination of the structure is relatively loose, large particle group.
Aggregates: a primary-particle combination of  Metal stearate two-sided, or the growing crystal surface together, the structure is compact, large particle group.
Most of the pigment agglomerates of Lu cake drying and subsequent formation of a dry mill.
Aggregates of pigment manufacturing process precipitate formed during the curing. Agglomerates and aggregates secondary particles as pigments together.

pairs of aluminum stearate introduction

 Chinese Name: Double aluminum stearate
Alias: basic aluminum stearate ; two aluminum stearate ; two ( stearic acid ) aluminum ; dual aluminum stearate ( light ) ; distearate  inganic pigments bayerite ; basic two ( stearic acid ) aluminum
Product Name : Aluminium distearate (light)
English Synonyms : Aluminium distearate, light; Hydroxyaluminum distearate; hydroxybis (octadecanoato-o)-aluminum; ALUMINUM DISTEARATE; ALUMINIUM STEARATE, DI; aluminiumdistearate; Aluminum, hydroxybis (octadecanoato-O) -; aluminumhydroxidedistearate; aluminumhydroxydistearate; Aluminium Distearate
CAS NO. :300-92-5
EINECS :206-101-8
MF : C36H71ALO5 [1] Molecular  methyl tin stabilizer Weight: 610.93
Physical and chemical properties Appearance : White powder , insoluble in water . Soluble in ethanol , benzene, turpentine , mineral oils , alkalis . [ 2 ] heating or in case of decomposition of stearic acid and the corresponding aluminum . With aromatic and aliphatic hydrocarbons to form colloids.
Usage toxic for PVC heat stabilizers, metal rust inhibitors , water repellent materials , cosmetics, emulsifiers , thickeners  dibutyl phthalate  credit coatings and inks , plastics lubricants, oil drilling Defoamer

Main features of the plasticizer

The plasticizer is a high boiling point ,
Low volatile substances , the molecular structure portion having a polar and non-polar parts. Plasticizer molecules can be inserted between the polymer chains , weakening intermolecular forces , increasing the distance between the polymer chains and space , to increase  Dioctyl phthalate the plastic polymer , polymer processing temperature reduction . Case of PVC plastics . Because PVC child so strong intermolecular forces , the higher the processing temperature , prone to degradation . In PVC plasticizer is added and heated , the plasticizer molecules can be inserted between the molecular chains of PVC ,
PVC plasticizer polar polar part and part of the role , after cooling , the plasticizer molecules remain in the inserted position,
The non- polar part of zinc borate flame retardant  the plasticizer to play a role in isolation , weakening PVC intermolecular forces ,
Achieve improved ductility and flexibility of PVC , polyvinyl chloride processing temperature reduction purposes. The polar part of the plasticizer molecules is mainly an ester group , an epoxy group , an ether bond , a cyano group , a chloro group and other polar groups ; non- polar part of the main chain methylene and alkyl chains. Adding plasticizers in polymers called external plasticizer ;
The formation of the polymer , said comonomer added
As an internal plasticizer , such as vinyl chloride and vinyl acetate copolymer , vinyl acetate as  chromium oxide the internal plasticizer. Plasticizer :
 ① reduce melt viscosity ;
 ② to increase the flexibility of the polymer ;
 ③ increase the elongation at break of the polymer ;
 ④ lower polymer molding processing temperature ;
 ⑤ improve processing characteristics forming polymer ;
 ⑥ improve the impact properties of polymers ;
 ⑦ improve low temperature polymer Qu Xing ;
 ⑧ reduce polymer surface hardness .