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AssigneePolymatech Co., Ltd.
InventorsMasayuki Tobita, Natsuko Ishihara, Naoyuki Shimoyama, Shinya Tateda
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A thermally conductive polymer composition includes polymer matrix such as thermoplastic resin or thermoplastic elastomer and a graphitized carbon fiber which serves as a thermally conductive filler. The graphitized carbon fiber is made from a mesophase pitch. The mesophase pitch is spun, infusibilized, carbonized, pulverized, and graphitized to form powdery graphitized carbon fibers. Preferably, the graphitized carbon fibers have a diameter of 5-20 μm, an average particle size of 10-500 μm, and a density of 2.20-2.26 g/cm3. The composition may be molded to form a thermally conductive molded article such as a thermally conductive sheet. The thermally conductive polymer composition and thermally conductive molded article have high thermal conductivity and transfer large amounts of heat from electric or electronic parts.
A thermally conductive polymer composition comprising:
A thermally conductive molded article made by molding a thermally conductive polymer composition into a predetermined shape, the composition comprising:
A method for producing graphitized carbon fibers comprising:
Dependencies are inferred from the claim text.