HIGHLY GRAPHITIZED POROUS CARBON FIBER SHEET AND PRODUCTION THEREOF

摘要

PURPOSE:To improve graphitization degree, chemical resistance and electroconductivity by forming uncalcined organic fiber used as a starting material to sheet and calcining the resultant sheet. CONSTITUTION:A solution of thermosetting resin is impregnated into a fiber aggregate sheet containing an organic fiber for producing uncalcined carbon fiber at an amount of 65wt.% and the impregnated sheet is dried and the surface of the above-mentioned fiber is coated with the above-mentioned thermosetting resin. Then the thermosetting resin is thermally cured to prepare a precursor sheet, which is then subjected to stabilization treatment in oxygen-containing atmosphere at 150-350 deg.C for >=5hr. The precursor sheet after stabilization treatment is calcined in an inert gas atmosphere at >=180 deg.C to provide the highly graphitized porous carbon fiber sheet.