Patent ID: 6927249

Claim:
A heat absorb-release plastic resin composition comprising i) a matrix resin material selected from the group consisting of polybutylene terephthalate, polyethylene terephthalate, aromatic polyamide, polyamide, polycarbonate, polystyrene, polyphenylene sulfide, thermal emitting liquid crystal polymer, polysulfone, polyether sulfone, polyether imide, polyether ether ketone, polyacrylate, polymethyl methacrylate, polyvinylalcohol, polypropylene, polyethylene, polyacrylonitrile-butadiene-styrene copolymer, polytetramethyleneoxide-1,4-butandiol copolymer (polybutylene terephthalate elastic body), a styrene containing copolymer, fluorine-based resin, polyvinylchloride, polyacrylonitrile, and a mixture thereof, ii) a phase transition material that has lower fusion-crystallization temperature than the matrix resin and has 10 J/g or more of heat absorb or heat release amount at a lower temperature than a fusion temperature of the matrix resin, iii) a compatibilizer selected from the group consisting of maleic anhydride olefin copolymer, vinylacetate olefin copolymer, polyolefin copolymerized with amide group, styrene-ethylene-butadiene-styrene copolymer, styrene-butadiene-styrene copolymer, and a mixture thereof, and iv) a thermally conductive solid additive selected from the group consisting of copper, silver, gold, steel, nickel, silicon carbide, silicon, boron nitride, boron azenide, boron phosphide, diamond, beryllium oxide, beryllium sulfide, aluminum nitride, aluminum phosphide, gallium nitride, gallium phosphide, and a mixture thereof in an amount of 5 to 90 parts by weight, based on 100 parts by weight of the sum of said matrix resin material and said phase transition material, wherein, the ratio by weight of said matrix resin material and phase transition material ranges from 60:40 to 80:20, and said heat absorb-release plastic resin composition satisfies the requirements of Flexural Modulus being 3000 kg/cm 2 or more, and room temperature heat conductivity being 0.4 W/m-K or more.