Abstract: This paper made an analysis on the microstructure and sol process of rubbers using in ABS. The grafting copolymerization of styrene and acrylonitrile monomers in the pilot production process of continuous bulk polymerization of ABS were preformed and researched using different types of rubber and rubber ratio. The comprehensive performance of ABS produced under different conditions was emphatically investigated. The results indicate that the resultant ABS has better performance using Dushanzi lowcis polybutadiene rubber 50AF than Gaoqiao 55AE lowbutadiene rubber or blend rubber. In the blend rubber, the resultant ABS has better performance when the ratio of rubber is 7∶3(Dushanzi 50AF lowbutadiene rubber: Yanshan petrochemical corporation highbutadiene rubber BR9004).The impact strength of ABS increases, and melting index of ABS decreases with the increase of the rubber content.

Key words: acrylonitrilebutadienestyrene copolymer, blend rubber, preparation, impact strength, rubber