• 专利标题:   Graphene-reinforced thermally conductive aluminum-based composite material comprises metal aluminum layer, and graphene-metal aluminum composite structure layer comprising sheet-shaped graphene interpenetrating metal aluminum.
  • 专利号:   CN113403504-A, CN113403504-B
  • 发明人:   ZHAO K, DENG C
  • 专利权人:   ANHUI TIANKANG GROUP SHARES CO LTD
  • 国际专利分类:   C22C021/00, C23C026/00, B22D023/04
  • 专利详细信息:   CN113403504-A 17 Sep 2021 C22C-021/00 202191 Pages: 14 Chinese
  • 申请详细信息:   CN113403504-A CN10616779 02 Jun 2021
  • 优先权号:   CN10616779

▎ 摘  要

NOVELTY - A graphene-reinforced thermally conductive aluminum-based composite material comprises a metal aluminum layer, and a graphene-metal aluminum composite structure layer comprising sheet-shaped graphene interpenetrating metal aluminum. USE - Graphene-reinforced thermally conductive aluminum-based composite material. ADVANTAGE - The graphene-reinforced thermally conductive aluminum-based composite material is prepared at low mixing temperature of graphene and aluminum-based material, such that the generation of interface reaction which generates solid aluminum carbide (A14C3) to damage mechanical, electrical and thermal properties of the composite material, is prevented. The metal aluminum layer in the composite material retains special oxidation resistance, corrosion resistance, electrical conductivity and thermal conductivity of aluminum metal. The sheet-shaped graphene surrounded and solidified by the metal aluminum effectively enhances reduction of heat dissipation and thermal resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the graphene-reinforced thermally conductive aluminum-based composite material, which involves weighing sheet-shaped graphene, carboxymethyl cellulose and deionized water in a reactor, stirring at 100 rpm for 2 hours, grinding obtained mixture in a sand mill to obtain graphene slurry, coating the graphene slurry on one surface of the aluminum plate profile, vacuum-drying to obtain graphene slurry-coated aluminum plate profile, placing the graphene slurry-coated aluminum plate profile in a clamping tool mold, placing the mold in the cavity of a vacuum sintering furnace, sealing the furnace, vacuuming the cavity of the vacuum sintering furnace, sintering at 661 degrees C for 4 hours, then naturally cooling the cavity of the vacuum sintering furnace to 32 degrees C such that the molten aluminum in the graphene slurry-coated aluminum plate profile is cooled and solidified to form a graphene-reinforced thermally conductive aluminum-based composite material, then slowly releasing the vacuum in the cavity of the vacuum sintering furnace, removing the clamping tool mold from the vacuum sintering furnace, and then removing the graphene-reinforced thermally conductive aluminum-based composite material in the clamping tool mold.