Microwave characteristics of sandwich composites with mesophase pitch carbon foams as core

Microwave characteristics of sandwich composites with mesophase pitch carbon foams were examined. Carbon foam was a novel lightweight material with ultra-high thermal conductivity after graphitization. Carbon foam material was rich in high oriented filaments and ligaments along the open pore walls. The pore structure of carbon foam made it a structural absorbing material, which contributed to the high absorbability of incident energy. Analysis suggested the application of carbon foams derived from mesophase pitch as radar absorber for fabricating structural composites.