Acrylic Processing Aid

The molecular weight of acrylic processing aids is generally high, which can endow products with excellent transparency; It has good compatibility with polymer materials such as polyvinyl chloride (PVC) and can be uniformly dispersed in the polymer matrix, thereby exerting its modifying effect.
During the processing, it can improve the thermal stability of polymers and delay the aging process of materials. It can also improve the fluidity and ductility of polymer melt, and enhance the rheological properties of the melt.

It is an indispensable additive in PVC processing, which can promote the plasticization of PVC, improve the flowability of PVC, enhance the processing performance of PVC products, strengthen mechanical properties, improve surface quality, and endow products with excellent dimensional stability.
It can improve the melt strength, facilitate PVC foaming, and some acrylic processing aids can also be used for polyolefin processing, endowing polyolefin with melt elasticity and increasing melt tension.
PVC profiles, pipes and pipe fittings can be used: In the production of PVC profiles, pipes and pipe fittings, the addition of acrylic acid processing aids can promote the gel of PVC, improve the melt strength of the melt, and significantly improve the surface finish and physical properties of products.
Used for the production of PVC foam board, it can improve the foaming performance and make the foam cells more homogeneous.
It can improve the fluidity of transparent PVC film and sheet, assist in plasticization, and enhance transparency.

Introduction to PVC processing aids
PVC processing aid is a chemical substance specifically used to improve the processing performance of polyvinyl chloride (PVC) plastic products. They play a crucial role in the production process of PVC plastic products, significantly improving product quality and production efficiency.
Definition and Function
PVC processing aids are multilayer ultra-high molecular weight polymers made of acrylate monomers through multi-stage lotion polymerization. Their main functions include:
Improving processing performance: By improving the flowability, thermal strength, and ductility of PVC melt, plasticization time and productivity can be increased.
Improve product quality: reduce mold expansion phenomenon, enhance resistance to elongation or stretching deformation, increase solution viscosity, and improve internal and surface quality.
Types and Applications
Common PVC processing aids include:
ACR: The best impact modifier developed in recent years, suitable for outdoor PVC plastic products, with good processing performance, smooth surface, and good aging resistance.
CPE: Chlorinated polyethylene, commonly used in the production of PVC pipes and profiles, with a dosage of 5-15 parts per square meter.
MBS: It has good compatibility with PVC and is commonly used in transparent products, but its price is relatively high and it is not suitable for long-term outdoor use.
ABS: The usual dosage is 5-20 parts, but it has poor weather resistance and is not suitable for long-term outdoor use.
EVA: Often used in combination with other impact resistant resins, but it is difficult to obtain transparent products.
History and Development
PVC processing aids were first developed by the American company Rohm and Haas in 1958, and similar products were subsequently developed by countries such as Japan, South Korea, and Germany. With the widespread application of PVC products, processing aids have been widely used since the 1970s.
Market and application areas
At present, the world's major manufacturers of PVC processing aids include Mitsubishi from Japan, Zhongyuan Chemical, Rohm and Haas from the United States, and Bear from Germany. The Beijing Institute of Chemical Technology and Shanxi Institute of Chemical Technology were among the earliest to engage in research on PVC processing aids in China. Shanghai Shanhu Chemical Plant was the first to achieve industrial production in the early 1980s.
In summary, PVC processing aids play an important role in the production of PVC plastic products, significantly improving production efficiency and product performance by improving processing performance and product quality.

PVC FOAMING REGULATOR
* Our PVC foaming regulator is a new developed foaming regulator. lt is a kind of acrylic processing aid, which has all functions of common acrylic processing aid, but it has higher molecular weight and excellent melt strength.
* lt's high foaming efficiency enable converters to meet the most demanding requirements in foam core pipes and foam profile formulations using lower addition levels.

LD Series produced by metal compound stabilizer with the amount of chelating agent, lubricants and
other internal and external components with the unique processing technology. The product contain the
right amount of complex antioxidant system and other functional polymer additive, which can
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Made by calcium salt,zinc salt,lubricants,antioxidant hydrotalcite as the main ingredients.It pass the SGS
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The main function of PVC impact modifier is to improve the impact resistance of PVC plastic products, enhance their toughness and hardness. PVC belongs to low-temperature brittle materials, which are prone to forming notches or cracks under stress impact. Therefore, adding impact modifiers can effectively improve these problems.
Common PVC impact modifiers and their effects
CPE (Chlorinated Polyethylene): CPE is one of the commonly used PVC impact modifiers, which has the characteristics of wide source and low price. It not only can toughen PVC, but also has cold resistance, weather resistance, and chemical resistance. CPE is widely used in the production of PVC pipes and profiles, with a typical addition amount of 5-15 parts.
ACR (methyl methacrylate acrylate copolymer): ACR is one of the best impact modifiers developed in recent years, which can significantly improve the impact strength of materials. ACR is particularly suitable for PVC plastic products used outdoors due to its excellent aging resistance and processing performance.
MBS (methyl methacrylate butadiene styrene copolymer): MBS has good compatibility with PVC and can significantly improve the impact strength of PVC while maintaining its transparency. MBS is commonly used for transparent PVC products, but its weather resistance is poor and it is not suitable for long-term outdoor use.
Application scenarios and advantages and disadvantages of different impact modifiers
CPE: It has a wide range of sources and low prices, but the use of chlorine containing components is limited in European and American countries, and its impact resistance is generally .
ACR: It has the best impact resistance, good weather resistance, and is suitable for outdoor use, but its price is relatively high.
MBS: Good transparency, but poor weather resistance, not suitable for outdoor use, high price

ACM IMPACT MODIFIER is an unique impact modifier which is an interpenetrating network copolymer (IPN ) with the structure of CPE grafted Polyacrylate . It has balance impact strength and toughness which endow it better performance than other general type impact modifiers like CPE and MBS.

Excellent impact strength under low temperature
Excellent toughness and hardness for PVC products.
Better weather-resistance
better surface glossiness for PVC finished products

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