ABS Modification Research

ABS resin is an engineering plastic developed in the 1940s. It is polymerized by three monomers of acrylonitrile, butadiene and styrene. The synergistic effects of various components make ABS have impact resistance, high surface hardness, and size. It has the advantages of stability, good electrical performance, and easy processing and forming. It is widely used in automobiles, electronic appliances, instrumentation, building materials and other industries. However, ABS also has poor weather resistance, poor flame resistance, and insufficient mechanical properties, which affect its application range. At present, ABS resin is developing towards high performance and multi-function in order to increase the added value and market competitiveness of products. For example, when used in electronic and electrical accessories, its flame retardancy must be improved; when used in higher temperature applications such as water heater shells, its heat resistance must be improved; when making large thin-walled products, its fluidity must be improved; if When used outdoors, its aging resistance should be improved. However, only through the alloying of ABS resin can high-performance ABS be obtained.

SMA resin (copolymer of styrene and maleic anhydride) has excellent heat resistance, and ABS/SMA alloy can improve the heat resistance of ABS. The heat resistance temperature of ABS/SMA alloy increases with the increase of SMA resin mass fraction, but the impact strength decreases with the increase of SMA resin mass fraction; the impact strength of ABS/SMA alloy can be improved by adding high rubber mass fraction ABS resin.