THERMALLY CONDUCTIVE SHEET, PROCESS FOR PRODUCING THE SAME, AND RADIATOR UTILIZING THERMALLY CONDUCTIVE SHEET
申请人:Yoshikawa Tooru
公开号:US20100073882A1
公开(公告)日:2010-03-25
A thermally conductive sheet having both of a high thermal conductivity and a high flexibility is obtained by providing a thermally conductive sheet including a composition containing:
graphite particles (A) in the form of a scale, an elliptic sphere or a rod, a 6-membered ring plane in a crystal thereof being oriented in the plane direction of the scale, the major axis direction of the elliptic sphere, or the major axis direction of the rod; and
an organic polymeric compound (B) having a Tg of 50° C. or lower,
wherein the plane direction of the scale, the major axis direction of the elliptic sphere, or the major axis direction of the rod of the graphite particles (A) is oriented in the thickness direction of the thermally conductive sheet, the area of the graphite particles (A) exposed onto surfaces of the thermally conductive sheet is 25% or more and 80% or less, and the Ascar C hardness of the sheet is 60 or less at 70° C.
Further there is provided a process for producing, without fail, a thermally conductive sheet advantageously for productivity, costs and energy efficiency and a radiator having a high heat radiating capability.