Novel Three-Dimensional SiC/Melamine-Derived Carbon Foam-Reinforced SiO₂ Aerogel Composite with Low Dielectric Loss and High Impedance Matching Ratio

Novel three-dimensional SiC/melamine-derived carbon foam composite filled by silica aerogel (SiC/MDCF–Aerogel) was first fabricated by the pyrolysis process of commercial melamine foam, chemical vapor deposition of ultrathin SiC films, and the sol–gel method of silica aerogel. The results indicated that the SiC/MDCF–Aerogel composite consisted of the SiC three-dimensional open-celled network structure and the pregnant silica aerogel in the...