RESIN COMPOSITION AND RADIATING SPACER FORMED FROM THE SAME

摘要

A resin composition for use as a thermally conductive member, radiating spacer, etc. which are inexpensive and have satisfactory thermal conductivity and excellent flame retardancy; and a thermally conductive member and a radiating spacer each formed from the resin composition. The resin composition contains a thermally conductive filler in an amount of 45-60 vol.% based on the whole resin composition, the thermally conductive filler comprising an aluminum hydroxide power having a particle size distribution in which the frequency maximum is preferably at 5-70 µm. The filler more desirably contains silicon dioxide. The radiating spacer is obtained by preparing a slurry from a resin composition comprising a thermally conductive filler comprising aluminum hydroxide and a silicone resin, applying the slurry to a resin film to form a coating film, and then heating and curing it to form a sheet. The spacer has a thickness of preferably 0.3-5.0 mm and a thermal conductivity of preferably 0.8 W/m K or higher.