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ACR (Acrylic copolymer) is an acrylic copolymer with a core-shell structure. It is an impact modifier with excellent comprehensive performance. Usually, the additives used for the purpose of improving the toughness of shu plastics are called impact modifiers, and the additives used for the purpose of improving processing performance is called processing modifiers. ACR is a plastic additive with dual functions of impact modification and processing modification. Because of its core/shell structure, its PVC products have excellent impact resistance, low-temperature toughness, compatibility with PVC, weather resistance, Stability, processability, and the ratio of performance to price are moderate, which can significantly improve the fluidity and thermal deformation of PVC melt, promote plasticization, and make the surface of the product smooth and beautiful. It is mainly used in hard and semi-hard PVC products, especially chemical building materials, such as profiled materials, pipe fittings, plates, foam materials, etc., and is particularly suitable for outdoor products. It is a type of impact modifier that is used in large quantities today and is also a key development in the future. PVC is one of the plastics with the largest production and consumption. It has many valuable characteristics, but there are also many shortcomings. Poor toughness is one of its major shortcomings. In order to improve its toughness without damaging its tensile strength and other Physical properties, PVC impact modifier came into being. In addition, ACR impact modifiers can also be used in engineering plastics such as polycarbonate (PC) and polyester (PET) and their blends.
Acrylics Impact Resistant Modifier
The main varieties of PVC impact modifiers are chlorinated polyethylene (CPE), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylonitrile-butadiene-styrene copolymer (ABS), EVA, ACR, acrylonitrile and butadiene random copolymer (NBR) and rigid particles, etc.
The mechanical properties are better than low-density polyethylene, and the melting point is higher than that of low-density polyethylene, about 126 136°C. Its embrittlement is mainly used as a modifier of polyvinyl chloride to improve the impact resistance of polyvinyl chloride. Chlorinated polyethylene itself also.
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