High-elastic wear-resistant polymer rubber and preparation method thereof

The invention provides high-elastic wear-resistant polymer rubber and a preparation method thereof, and belongs to the technical field of modified rubber. The high-elastic wear-resistant polymer rubber comprises the following steps: S1, graft modification of rubber: mixing a silane coupling agent KH570, polyisoprene rubber and an initiator, melting under a heating condition, and carrying out graft copolymerization, granulation and ball milling to obtain powdery graft modified polymer rubber; S2, sol-gel reaction: dispersing the powdery graft modified polymer rubber in an ammonia water solution containing a pore-foaming agent, emulsifying and reacting to obtain graft modified rubber for generating SiO2 in situ; and S3, melt blending of polylactic acid: internally mixing the polylactic acid and the in-situ generated SiO2 graft modified rubber, shearing into particles, and carrying out injection molding to obtain the high-elastic wear-resistant polymer rubber. The high-elasticity wear-resistant polymer rubber pr