THERMALLY CONDUCTIVE PRESSURE-SENSITIVE ADHESIVE AND ADHESIVE SHEET CONTAINING THE SAME

摘要

PURPOSE: Provided are heat-conductive and pressure-sensitive adhesives and adhesive sheets in the form of sheets, tapes, etc. wherein the heat-conductive and pressure-sensitive adhesives are located on heat-conductive base materials. CONSTITUTION: An adhesive sheet (2) is interposed between an electronic part (1) and a heat-radiating member (3). The sheet (2) comprises a thermally conductive substrate (21) and, disposed respectively on both sides thereof, layers(22 and 23) of a thermally conductive pressure-sensitive adhesive comprising: (a) 100 parts by weight of a copolymer of a monomer mixture comprising 100 parts by weight of main monomers consisting mainly of alkyl (meth)acrylates in which the alkyls each has 2 to 14 carbon atoms on average and 1 to 30 parts by weight of a polar monomer giving a homopolymer having a glass transition point of 0°C or lower; and (b) 10 to 300 parts by weight of a thermally conductive filler. Thus, the part (1) is bonded to the member(3) with the layers (22 and 23) while attaining satisfactory thermal conduction therebetween.