PRODUCTION OF CARBON MATERIAL FROM PITCH

摘要

PURPOSE:A pitch for carbon material is formed and the resultant formed products ar heated under reduced pressure to effect preoxidation treatment then the carbonization treatment is conducted, thus keeping the original form, increasing the strength of the carbonized material, permitting the shortened preoxidation treatment and increasing productivity. CONSTITUTION:A pitch for carbon material is formed and the products are heated under high vacuum of less than 10Torr at the heating rate of several tens degrees/min. up to 500 deg.C to effect the preoxidation treatment. Then, they are subjected to carbonization and graphitization to produce objective pitch carbon materials such as carbon fiber or carbon films. EFFECT:No harmful gases are used to make the facilities for disposing the exhaust gas unnecessary an to simplify the preoxidation unit.