PRODUCTION OF POROUS CARBONACEOUS MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a porous carbonaceous material having a large pore diameter and a high porosity, few closed pores and many opened pores and uniform pore properties. SOLUTION: A laminated nonwoven fabric sheet is impregnated with a thermosettihg resin solution having 40-70 wt.% resin nonvolatile content and 0.2-30P viscosity and the pressurizing treatment of the resultant resin- impregnated nonwoven sheet laminate is then carried out to compress the thickness of the laminate to 20-40%. The pressing force on the compressed resin- impregnated nonwoven fabric sheet is then released and deaeration treatment of the laminate is further carried out under a reduced pressure. The resin- impregnated nonwoven fabric sheet after the deaeration treatment is then press formed and thermoset to control the porosity of the resultant formed product to 45-75%. The regulated formed product is then heattreated at >=800 deg.C temperature in a nonoxidizing atmosphere.