▎ 摘　　要

NOVELTY - Anisotropic thermally conductive multilayer polymer composite material is obtained by laminating or winding multiple thermally-conductive fillers/polymer composite films, is claimed. The thermally conductive filler/polymer composite film is oriented and continuously arranged on surface of polymer film, and forming directional heat conduction network parallel to surface of polymer film on surface of polymer film. The thermally conductive filler is boron nitride, graphite, graphene, carbon nanotubes and/or carbon fibers. The material of polymer film is polypropylene, polyethylene, polystyrene, polycarbonate, acrylonitrile styrene butadiene copolymer, polyamide, polyethylene terephthalate, polyphenylene ether, polyperfluoroethylene propylene, polybutylene terephthalate, chlorinated polyether, styrene-butadiene rubber, nitrile-butadiene rubber, silicone rubber, butadiene rubber, polyisoprene, ethylene-propylene rubber and/or Neoprene(Synthetic rubber based on polychloroprene). USE - The composite material is useful in electric motor, electronic packaging, aerospace and military. ADVANTAGE - The composite material has higher coefficient of thermal conductivity than the thermal conductive of the method. DETAILED DESCRIPTION - Anisotropic thermally conductive multilayer polymer composite material is obtained by laminating or winding multiple thermally-conductive fillers/polymer composite films, is claimed. The thermally conductive filler/polymer composite film is oriented and continuously arranged on surface of polymer film, and forming directional heat conduction network parallel to surface of polymer film on surface of polymer film. The thermally conductive filler is boron nitride, graphite, graphene, carbon nanotubes and/or carbon fibers. The material of polymer film is polypropylene, polyethylene, polystyrene, polycarbonate, acrylonitrile styrene butadiene copolymer, polyamide, polyethylene terephthalate, polyphenylene ether, polyphenylene sulfide, rigid polyvinyl chloride, polymethyl methacrylate, polyoxymethylene, polysulfone, polyimide, polytetrafluoroethylene, polychlorotrifluoroethylene, polyperfluoroethylene propylene, polybutylene terephthalate, chlorinated polyether, styrene-butadiene rubber, nitrile-butadiene rubber, silicone rubber, butadiene rubber, polyisoprene, ethylene-propylene rubber and/or Neoprene(Synthetic rubber based on polychloroprene). An INDEPENDENT CLAIM is also included for preparing the composite material, comprising (1) providing thermally conductive filler dispersion, (2) adding the thermally conductive filler dispersion into the immiscible two-layer system, and dispersing the orientation of the thermally conductive filler in the middle interface of the immiscible two-layer system, where the immiscible two-layer system comprises immiscible upper layer system and lower layer system, the lower layer system is liquid phase, and the upper layer system is liquid phase or gas phase, (3) soaking the polymer film in the lower layer system of the immiscible bilayer system containing the thermally conductive filler, moving the polymer film obliquely upwards, so that the thermally conductive filler is attached to the surface of the polymer film, completely removing the polymer film with the thermally conductive filler attached from the immiscible two-layer system, and obtaining thermally conductive filler/polymer composite film, and (4) stacking or winding multiple of thermally conductive filler/polymer composite films, and obtaining the anisotropic thermally conductive multilayer polymer composite material after heat treatment.