PURPOSE: To improve uniformity in void volume and pores and to make a porous carbon material useful as a filter medium, a carrier for a biological treating agent, an adsorbent, etc., by partially bonding the contact points of lumps of carbon fibers and forming a three-dimensional fiber network structure.
CONSTITUTION: Lumps of carbon fibers or infusible pitch fibers having 4-60μm diameter of the fibers, 0.1-10mm length of the fibers, 0.01-0.4g/cm3 apparent density of the lumps and 1-10mm diameter of the lumps are packed into a molding vessel and an adhesive such as phenol resin is sprayed and dried to bond the lumps to each other. The resulting molded body is heat-treated at 700-3,000°C in an inert gaseous atmosphere to carry out carbonization and the subject carbon material having a three-dimensional fiber network structure formed by partially bonding the contact points of the lumps is obtd.
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HANATANI SEIJI
YUMITATE KOZO
SUMI MASAYUKI
KAMISHITA MAMORU
