| 摘要 |
PURPOSE:To form a porous carbon composite film excellent in heat resistance and chemical resistance by heating a support wherein a film composed of a specific composition in formed in an oxidizable gas to apply flame-resistant treatment to the support and subsequently heating the support at 600 deg.C or higher in inert gas. CONSTITUTION:A polymer solution having a polyacrylonitrile type polymer and a heat-decomposable volatile polymer dissolved therein is applied to at least one surface of a sheet like support composed of a carbonaceous fiber to form a film. Subsequently, the support is heated in oxidizable gas to apply flame-resistant treatment to the polyacrylonitrile type polymer in the film and heated to 600 deg.C or higher in an inert gas atmosphere not only to carbonize the polyacrylonitrile type polymer but also to decompose and volatilize the heat-decomposable volatile polymer. As a result, a porous carbon film having pores communicating each other is obtained. |
