▎ 摘　　要

NOVELTY - Graphene/white carbon black composite material comprises graphene materials and white carbon black, where the white carbon black is grafted onto the sheet of the graphene-based material through a chemical bond. USE - Graphene/white carbon black composite material for preparing rubber composition (claimed). ADVANTAGE - The graphene/white carbon black composite material improve the stiffness of the graphene sheet, prevent the graphene from curling and folding due to high-temperature shear during the rubber mixing process, and improve the dispersion of the graphene in the rubber matrix. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene/white carbon black composite material, which comprises mixing the graphene oxide aqueous dispersion and the silane coupling agent, and after the grafting reaction is performed, a reaction system is obtained, and adding white carbon black to the reaction system, mixing again, and performing the grafting reaction again to obtain a graphene/silica composite material.