▎ 摘　　要

NOVELTY - Blending film comprises titanium dioxide graft, polyvinylidene fluoride, poly(methyl methacrylate), phenylpropanolamine and graphene, where the titanium dioxide graft is surface grafted with silane coupling agent KH-570-modified titanium dioxide. USE - The blending film is useful as solar energy battery back film. ADVANTAGE - The blending film prevents the formation of non-uniform blend film phenomenon by utilizing titanium dioxide graft; has increased adhesive property between the film and the substrate; and comprising poly(methyl methacrylate), phenylpropanolamine and graphene have aging resistance, thermal conductivity and surface smoothness of solar cell back film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing blending film comprising mixing titanium dioxide graft, polyvinylidene fluoride, poly(methyl methacrylate), phenylpropanolamine and graphene, extruding as strands, drying, cutting into granules, and carrying out cast molding using a single screw extrusion, to obtain the final product.