Types and characteristics of PVC processing modifier ACR

PVC processing modifier is sometimes encountered in industry. What kinds of PVC processing modifier are there?
(1) SBS is a ternary block copolymer of styrene, butadiene and styrene, also known as thermoplastic styrene butadiene rubber, which is a thermoplastic elastomer. Its structure can be divided into star type and linear type. The proportion of styrene to butadiene in SBS is mainly 30/70, 40/60, 28/72, 48/52.
(2) ABS for styrene (40%-50%), butadiene (25%-30%), propylene vinegar (25%-30%) terpolymer, mainly used as engineering plastics, but also used as PVC impact modification, impact modification effect is also very good at low temperature.
(3) EVA is a copolymer of ethylene and vinyl acetate. The introduction of vinyl acetate changes the crystallinity of polyethylene. The content of vinyl acetate is very poor.
(4) Chlorinated polyethylene (CPE) is a powdery product of suspended chlorination using HDPE in the aqueous phase. With the increase of chlorination degree, the original crystallized HDPE gradually becomes an amorphous elastomer.
(5) ACR is a copolymer of methyl methacrylate, acrylate and other monomers. ACR is the best impact modifier developed in recent years, which can increase the impact strength of materials by dozens of times.
(6) MBS is a copolymer of methyl methacrylate, butadiene and styrene.


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