▎ 摘　　要

NOVELTY - Preparing modified graphene/white carbon black composite filler comprises (i) dispersing graphene in a solvent to obtain a graphene dispersion, adjusting the pH of the dispersion to 10-13, adding ionic liquid, ultrasonically mixing and stirring to obtain modified graphene solution, and (ii) adding white carbon black into the modified graphene liquid, reacting under nitrogen atmosphere, heating and stirring conditions, centrifuging and drying to obtain final product. USE - Preparation method of modified graphene/white carbon black composite filler used in composite filler and rubber composite material used in tire tire of vehicle. ADVANTAGE - The method enables to prepare modified graphene/white carbon black composite filler, which has excellent wear resistance, mechanical property and wear resistance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: modified graphene/white carbon black composite filler; and rubber composite material using the modified graphene/white carbon black composite filler, prepared by mixing and vulcanizing raw materials comprising 100 pts. wt., substrate rubber, 30-55 pts. wt., preferably 40-55 pts. wt. modified graphene/white carbon black composite filler.