RADIO WAVE ABSORBENT AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a radio wave absorbent where conductive carbon is generated in a void of a noncombustible or fire-retardant porous body, and the manufacturing method of the radio wave absorbent. SOLUTION: The void of the noncombustible or fire-retardant porous body carries a catalyst containing metal such as nickel and cobalt by the impregnation or ion exchange method, or the porous body containing the metal elements is prepared for giving a catalyst function to the void and the contact of hydrocarbon is made under heating for generating the conductive carbon in the void inside the porous body, thus manufacturing the radio wave absorbent where the conductive carbon is uniformly distributed.