Improved Thermal Conductivity of Compostie Particles Filled Epoxy Resin

Abstract

E-44 epoxy resin was used as matrix，and silicon nitride，boron nitride，alumina and silicon carbide were used as heat-conducting insulating fillers. By selecting the amounts and types of the insulting fillers, the heat conductive properties of E-44 could be adjusted. In addition, by choosing the curing agent and accelerator the viscosity of E-44 could also be readily controlled. The relation among the adhesive viscosity，heat conductive property and prescription was studied. When the amounts of silicon nitride, alumina and boron nitride were 25%, 25%, 10% (based on the mass of epoxy resin matrix), respectively, the thermal conductivity of this system was 2.66 W/mK.