Organosilicone elastomer, organosilicone OCA optical cement, and preparation method and application of organosilicone elastomer and organosilicone OCA optical cement

The invention provides an organic silicon elastomer, an organic silicon OCA optical adhesive, and a preparation method and application of the organic silicon elastomer and the organic silicon OCA optical adhesive. The raw material formula of the organic silicon elastomer comprises polysiloxane, a prepolymer containing a vinyl side chain and a cross-linking agent, the weight ratio of the polysiloxane to the prepolymer containing the vinyl side chain ranges from 1: 7 to 7: 1; the content of the vinyl in the prepolymer containing the vinyl side chain is 60%-90%; the weight-average molecular weight of the prepolymer containing the vinyl side chain is lower than 8000 g/mol. The organic silicon OCA comprises a first release film, the organic silicon elastomer layer and a second release film which are sequentially stacked from bottom to top. Through cross-linking reaction curing of the prepolymer containing the vinyl side chain, polysiloxane and the cross-linking agent, the organosilicon elastomer has excellent opti