| 摘要 |
PURPOSE:To obtain a raw material for producing composite molded article of carbon type having characteristics such as high strength, high-speed carbonization properties, dimensional stability, low electrical resistance, etc., by susending a specific material in a tar fraction containing a mesophase pitch precursor and heat-treating the suspension under an inert gas circulation or under reduced pressure. CONSTITUTION:A metarial selected from graphite carbon, carbonaceous carbon, inorganic compound and metal (compound) is suspended in a tar fraction containing mesophase pitch precursor. Then, the suspension is heat-treated by introduction of an inert gas or by suction under reduced pressure at 350-520 deg.C. A light traction contained in the tar fraction is distilled away to give a raw material for composite molded article of carbon type wherein a mesophase-containing pitch having 2-90wt% quinoline soluble content is formed on the surface of the material. This method has merits wherein a high-strength molded article is obtained even if a ratio of the mesophase-containing pitch to the material is low and properties of the molded article can be widely changed by selecting the ratio and molding condition. |
