• 专利标题:   Thermally conductive film for thermal radiation structure, has scale-shaped carbon material that comprises graphene layers and binder and is in contact with each other, where long axis of scale-shaped carbon material is oriented in plane direction of film.
  • 专利号:   JP2023063226-A
  • 发明人:   YAJIMA A, NAITO T, SHIRATORI K, TSUKADA Y, KANEKO T, SAIKI T
  • 专利权人:   NISSAN MOTOR CO LTD
  • 国际专利分类:   H01L023/36, H01L023/373, H05K007/20
  • 专利详细信息:   JP2023063226-A 09 May 2023 H01L-023/373 202342 Pages: 25 Japanese
  • 申请详细信息:   JP2023063226-A JP127738 10 Aug 2022
  • 优先权号:   JP173025

▎ 摘  要

NOVELTY - The conductive film (10) has a scale-shaped carbon material that comprises several graphene layers (100) and a binder (200). The scale-shaped carbon material is in contact with each other. The long axis of the scale-shaped carbon material is oriented in the plane direction of the film. A portion of a minor axis of the binder or a minor axis of a void formed of the scale-shaped carbon material and the binder is smaller than a minor axis of the scale-shaped carbon material. A ratio of a total pore volume in a heat conductive film to a pore volume of a pore having a pore diameter smaller than an average portionicle diameter of the scale-shaped carbon material is 2.85 or more. The ratio of a number of the binder which is smaller than a minor axis of the scale-shaped carbon material and a minor diameter of which is smaller than a minor axis of the scale-shaped carbon material is 70% or more. The scale-shaped carbon material is a multilayer graphene or graphite. USE - Thermally conductive film for thermal radiation structure (claimed). ADVANTAGE - The thermally conductive film has excellent selective thermal conductivity in plane direction. The thermal conduction film excellent in the thermal conductivity in the surface direction is manufactured at a low cost. The reduction of thermal conductivity in the surface direction is suppressed to the minimum even if used for a long period of time, and the heat-conducting film excellent in durability is provided. The amount of voids in the inside part of the heat conduction film is relatively small, and deterioration of thermal conductivity is suppressed. The volume and weight of the heat dissipation structure are significantly reduced. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a thermal radiation structure; and a method for manufacturing thermally conductive film. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view schematically showing a cross section of a thermally conductive film. 10Thermally conductive film 100Graphene layer 200Binder