| 摘要 |
PURPOSE:To produce a carbon material having both high strength and different porosities, by contact bonding plural cellulose sheets impregnated with a thermosetting resin in different amounts and firing the resultant bonded sheets under specific conditions to form a composite molded carbon article having the different porosities. CONSTITUTION:Cellulose sheets having respective >=90wt% cellulosic content are impregnated with a thermosetting resin, e.g. phenolic resin, in respective different amounts. The resultant plural sheets are contact bonded and fired in a nonoxidizing atmosphere at least 600 deg.C temperature to give a molded carbon article consisting of amorphous carbon called glassy carbon or graphite and fibrous carbon having a high strength. The porosity of a layer with a low impregnation ratio is 85-20% and the porosity of a layer with a high impregnation ratio is <=15% depending on the different in the impregnation amount of the thermosetting resin. Thereby, the aimed carbon material having both high strength and different porosities is produced. |
