Polyfunctional group solution polymerized styrene-butadiene and isoprene copolymer rubber and preparation method thereof

The invention discloses a polyfunctional group solution polymerized styrene-butadiene-isoprene copolymer rubber and a preparation method thereof, the polyfunctional group solution polymerized styrene-butadiene-isoprene copolymer rubber has the following structure: # imgabs0 #, in the formula, R is alkyl or aryl with different carbon atom numbers; sBR is a random copolymer of styrene and butadiene; iR is an isoprene homopolymer; the mass ratio of SBR to IR is (1: 1)-(1: 2); the number-average molecular weight of SBR is not less than 100000, and the number-average molecular weight of IR is not less than 100000. The polyfunctional group solution polymerized styrene-butadiene and isoprene copolymer rubber disclosed by the invention has higher tensile property, high wet skid resistance and low rolling resistance. 本发明公开了一种多官能团溶聚丁苯、异戊二烯共聚橡胶及其制备方法，该多官能团溶聚丁苯、异戊二烯共聚橡胶具有以下结构：#imgabs0#其中，R为不同碳原子数的烷基或芳香基；SBR为苯乙烯、丁二烯无规共聚物；IR为异戊二烯均聚物；SBR：IR的质量比为1：1～1：2；SBR数均分子量不小于100000，IR数均分子量不小于100000。本发明的多官能团溶聚丁苯、异戊二烯共聚橡胶具有更高的拉伸性能、高抗湿滑性、