| 摘要 |
PURPOSE:To obtain a thin sheetlike carbon material excellent in bending strength, electrical characteristics and gas-impermeability by impregnating a substrate in the form of a fiber aggregate or film with an electrically conductive varnish prepared by mixing and kneading a liquid resin with a filler, carrying out lamination molding of the resultant sheets of prepreg and calcining the laminated sheets. CONSTITUTION:Carbon black especially 10-100nm average particle diameter is mixed with scaly graphite powder having <=100mum average particle diameter preferably at 50-90wt.%:10-50wt.% ratio to prepare a filler. The above-mentioned filler in an amount of 2-50wt.% based on a liquid resin, such as phenolic resin, is then added and mixed therewith to provide an electrically conductive varnish. A substrate consisting of cellulosic paper or film is then impregnated with the above-mentioned electrically conductive varnish. The resultant plural sheets of prepreg are subsequently dried at 100-150 deg.C, then laminated and thermally compression molded at 100-150 deg.C under 50-150kg/cm<2> to afford an electrically conductive laminated sheet. The obtained laminated sheet is then normally calcined at 900-1500 deg.C maximum temperature to provide the objective thin sheetlike carbon material. |
