Abstract
A raw material for Si-O-C ceramics is polysiloxane precursor, i.e., silicone resin, which is solid, molten, cross-linked, and pyrolyzed in the order from room temperature to 1000°C. A new process for producing Si-O-C ceramic foams has been developed based on polymer direct melt foaming process, by using chemical blowing agent and catalyst which accelerates the cross-linking of silicone resin. The successful production method was established through controlling the viscosity of silicone resin by catalyst at the decomposition temperature of chemical blowing agent.
