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.

Thermal stabilizers microcapsules WSD intenal lubricantgood compatibility with PVC

PVC as wall material , hydrotalcite, calcium / zinc composite heat stabilizer as core materials, preparation of an efficient, environmentally friendly PVC composite stabilizer microcapsules , and discusses the optimal preparation of the microcapsules . The results showed organic pigments that the microcapsules prepared solid content of 15% , when the stirring speed of 600r/min, the stirring time is 160min, the non-solvent solvent such as tetrahydrofuran and ethylene glycol ratio of 5:3 , the amount of emulsifier is 3% Span80 The resulting microcapsules compact structure , particle size distribution 100 ~ 450μm. The heat stabilizer microcapsules with a certain prospect. By following five study concluded . These five areas are: the impact of the solid content of the microcapsules , solvent and non- solvent ratio of the impact of the microcapsules , stirring affect the speed of the microcapsules , stirring time of microcapsules , the microcapsules emulsifier affected. Optical brightener Conclusion : the optimal preparation of the microcapsules may be: a solid content of 15% , stirring speed of 600r/min, the stirring time 160min, the mass ratio of solvent and non- solvent is tetrahydrofuran, ethylene glycol is 5:3 , the amount of emulsifier Span80 3% , ambient temperature and pressure , etc. can be filtered and dried to obtain the particle size distribution of the microcapsules 100 ~ 450μm. This heat stabilizer microcapsules good compatibility with PVC , thermal stability and mechanical properties under further study.

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 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.

PVC lubricant analysis on data obtained from the rheometer

Liquidity and inversely proportional to the viscosity of the melt viscosity and is proportional to the torque. Therefore, the better the melt flow, the lower the torque. The results are given in three WSD Calcium stearate  torque value in the torque rheometer, which is the minimum torque, maximum torque (torque plasticizer), and the balance torque. The author believes that the plasticizing torque evaluate lubricant to improve the liquidity of the most important indicators of PVC resin. Of course, the minimum torque and torque balance also has certain reference but they are a very good correspondence between the plasticizing torque, general plasticizing torque, minimum torque and torque balance is large, and vice versa. I also  WSD Titanium dioxide rutile believe that the plasticizing effects of rotation torque device energy consumption is much larger than the actual processing equipment affect the balance of torque. There are two reasons: ① in the general proximity rigid PVC formulations are useful ACR processing aid, in this case, the torque value changes plasticized different lubrication systems is large, the  WSD Aluminum hydroxide torque balance is not very significant change [8]; ② various reasons (such as to avoid thermal decomposition, improved productivity, etc.) wishes to process the molten material balance as the torque corresponding to a shorter time, i.e., after reaching the expected degree of plasticized plastic melt leave processing equipment as soon as possible. Although only a plasticizing peak torque, but the plasticizing time of the peak corresponding to the integral of the area (energy consumption), but much greater than the torque corresponding to the balance of the integrated area of ​​time (energy consumption). It has also been proved: plasticizers torque only a few percent of large, integral surface because it is large, it also consumes a lot of energy, processing equipment due to overburdened

PVC lubricant developed rapidly

With the rapid development of industrial technology , foreign to all kinds of hard PVC products as raw materials ( such as tubes, sheets, plates , profiles , etc. ) have been developed rapidly , and these WSD Titanium dioxide rutile  different hardware products due to different processing equipment and technology needs , whether it is the lubricant for PVC from the variety and quantity requirements are made ​​more so , this demand will continue to promote the development and production of lubricant products.
Pvc Pvc products in the lubricant as a vital aid, it is compatible with PVC resin is very good , often mixed with resins, reduce WSD stearic acid  the melt viscosity of the resin to improve its liquidity. Such as butyl stearate , lead stearate lubricant is often used within pvc. Wherein the lubricant is stearic acid salts as well , and are effective stabilizers, and therefore play an essential role in the production process of pvc products . The plastics industry professionals also said that according to the PVC lubricant compatibility with PVC resin by other additives ( especially by other lubricants ) and change impact of the  WSD Chlorinated paraffin phenomenon and the different materials, PVC products must have an appropriate plasticizing degree raised this important guide and external lubrication balance. Pvc internal and external lubricant in the direction of future development , and according to this guidance for the design and production of PVC lubricant inside and outside work . In order to better assist the lubricant pvc products ( especially hard pvc products ) in the production process , thus ensuring a smooth and efficient production .

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.