| 摘要 |
PURPOSE:To develop an impermeable carbon material which is small in shrinkage at the time of carbonization by subjecting a thermosetting intermediate product which is obtd. by a thermal reaction of a mixture composed of a condensed polycyclic arom. compd., specific arom. crosslinking agent and acid catalyst to thermal curing and molding, then to a carbonization or graphitization at a high temp. CONSTITUTION:The mixture composed of the condensed polycyclic arom. compd. which is a mixture of >=1 kinds of derivs. consisting of naphthalene, anthracene, etc., as main skeleton, heavy gravity oils of coal and petroleum, tar, pitch, and the oxide, sulfide, halide, etc., of said materials, the arom. crosslinking agent consisting of 1 or >=2 arom. rings contg. 1 or >=2 kinds of a hydroxy methyl group and halomethyl group, and the acid catalyst such as aluminum chloride, boron fluoride or phosphoric acid or the thermosetting intermediate product obtd. by the thermal reaction of such mixture is heated to 100-400 deg.C in an oxidative or nonoxidative atmosphere and is plasticized, by which the mixture is thermally cured and molded to the prescribed shape; thereafter the molding is carbonized or graphitized. The impermeable carbon material which is small in shrinkage at the time of carbonization and has an intricate shape is thus produced. |
