▎ 摘　　要

NOVELTY - A composite material comprises thermally conductive filler and thermoplastic polymer. The composite material is obtained by mixing thermally conductive filler and thermoplastic polymer, obtaining mixture, heating and mold-pressing. The thermally conductive filler is graphene fiber having diameter of 5-5000 mu m. The thermoplastic polymer is chosen from polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polyfluoroalkoxy terephthalate, polyphenylene sulfide, nylon, polymethyl methacrylate and polyvinyl chloride. USE - Composite material is used for electronic material. ADVANTAGE - The composite material has excellent mechanical property and thermal conductivity, is manufactured by economical process. DETAILED DESCRIPTION - A composite material comprises thermally conductive filler and thermoplastic polymer. The composite material is obtained by mixing thermally conductive filler and thermoplastic polymer for 0.5-24 hours, obtaining mixture comprising 0.1-35 %mass thermally conductive filler, heating to 170-280 degrees C and mold-pressing at 10-18 MPa. The thermally conductive filler is graphene fiber having diameter of 5-5000 mu m. The thermoplastic polymer is chosen from polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polyfluoroalkoxy terephthalate, polyphenylene sulfide, nylon, polymethyl methacrylate and polyvinyl chloride.