Impact modifiers are key polymeric additives to improve the toughness of various plastic resins.Adding impact modifiers to plastic compounded materials can help enhance the impact strength and durability of various plastic resins. Weak impact resistance is generally a performance defect observed in certain plastics, such as PVC, PP, and PS, mostly at low temperatures, which limits their application due to low impact resistance. Thus, adding impact modifiers is the best way to achieve high impact resistance. At present, the main varieties of PVC impact modifiers are chlorinated polyethylene (CPE), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylonitrile-butadiene-benzene copolymer ( ABS), EVA, ACR, random copolymer of acrylonitrile and butadiene (NBR) and rigid particles.
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