▎ 摘　　要

NOVELTY - Graphene composite material composition comprises 70-95 pts. wt. thermoplastic resin, 0.1-0.5 pt. wt. functionalized graphene, 2-8 pts. wt. dispersant, 2-8 pts. wt. coupling agent and 2-10 pts. wt. initiator. USE - The composition is used for preparing graphene composite material (claimed). ADVANTAGE - The composition is lightweight, and the prepared composite material has low density and excellent mechanical properties such as high tensile strength, high bending strength and high cantilever notch impact strength, is lightweight, and improves the melt index. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite material using above-mentioned composition, involving (a) contacting functionalized graphene in solvent with coupling agent in the presence of dispersant to obtain a mixture (I), and (b) contacting obtained mixture (I) and thermoplastic resin with initiator, and molding to obtain the composite material composition.