Black thermal control film and thermally controlled microwave device containing porous carbon pigments

摘要

A black film useful in thermal control has a matrix with 100 parts by weight of a polymer, and from about 1 to about 6 parts by weight of an electrically conductive carbon pigment having a porous, sponge-like structure dispersed through the matrix. The film may be a freestanding film, typically about 0.001 to about 0.003 inches thick, used as a radome. The film may instead be a liquid paint or a solid paint applied to a surface.