▎ 摘　　要

NOVELTY - High thermal conductivity polypropylene/graphene composite material comprises 1-4 pts. wt. graphene oxide, and 6-9 pts. wt. polypropylene. USE - High thermal conductivity polypropylene/graphene composite material. ADVANTAGE - The high thermal conductivity polypropylene/graphene composite material reduces the interface thermal resistance between the graphene oxide, improves the thermal conductivity in the surface of the composite material, and widens the application range. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a high thermal conductivity polypropylene/graphene composite material, which involves: (A) modifying graphene oxide with polydopamine layer to promote dispersion in solvent; (B) dispersing the polypropylene powder in an organic solvent, and when the polypropylene is completely dissolved, adding polydopamine-functionalized graphene oxide to the solution to obtain a mixed dispersion; and (C) drying the solvent to obtain a polypropylene/graphene film, stacking multiple layers of the film and hot pressing to obtain a polypropylene/graphene composite material.