Method for enhanced dielectric curing

摘要

A heat curable resin composition consists essentially of a thermosetting resin, a curing agent chemically reacting with the resin for curing the resin upon the application of a predetermined amount of heat for a predetermined period of time, and an additive system consisting of a chemically inert salt which is soluble in the resin and carbon blacks for increasing the dielectric loss factor of the composition without a significant increase in viscosity of the composition to accelerate the dielectric heating rate. A method of preparing the heat curable resin composition includes the steps of mixing the thermosetting resin and curing agent which chemically reacts with the resin for curing the resin upon the application of a predetermined amount of heat for a predetermined period of time and mixing an additive system consisting of a chemically inert salt and carbon blacks in the resin and increasing the dielectric loss factor of the composition without a significant increase in viscosity of the composition. The composition is dielectrically heated at an accelerated rate which is faster than the rate of heating the mixture of the resin and curing agent alone.