| 摘要 |
PURPOSE:A mixture of a liquid phenolic resin, a fine carbon powder and a pore-forming material is formed and roasted in a nonoxidative atmosphere to produce a porous carbon material which has high porosity, uniform and continuous pores and high dimensional accuracy. CONSTITUTION:5-30wt%, on the solid basis, of a liquid phenolic resin, 5-30wt% of a fine powder of carbon or a substance convertible into carbon and 40-80wt% of a pore-forming agent are mixed and extruded into a form. Then, the resultant porous material is roasted in a non-oxidative atmosphere to give the objective a porous carbon material. The liquid phenolic resin is preferably a water-soluble resol resin which is obtained by allowing 1mol of phenol to react with 1.5-3.5mol of an aldehyde in the presence of a little excessive amount of an alkali catalyst and keeping the resultant initial condensate stably soluble in water from the operative point of wiew. Fine powders of phenole-formaldehyde resin or furfuryl alcohol resin are preferred as a carbonizable substance, because they are keep high carbonization yield and show high form retention. |
