Abstract
SynopsisPorous carbon materials made from agricultural residues, such as rice hull and soy hull, have been developed from a recycling point of view. The carbon materials are manufactured by impregnating a phenol resin into their natural porous structure and then carbonizing in nitrogen gas atmosphere at high temperature. The high strength glassy carbon is produced from the impregnated phenol resin as a reinforcing member. The porous carbon materials are used as powder filler for rubber and plastics or as a porous carbon plate after pressure forming or injection molding. The carbon material retains the unique carbon properties, such as lightweight, excellent friction properties and high electric conductivity. Therefore, for example, they are expected to use as a friction element in bearings, and as an electromagnetic wave shielding material for electronics and automobile industries.
