| 摘要 |
PURPOSE:To obtain a composite material having highly complex characteristics in good productivity while reducing secondary reinforcing treatment by molding a matrix binding material mixed with specific graphite powder and carbon fibers in a combining way and burning in a nonoxidizing atmosphere. CONSTITUTION:A thermosetting resin prepolymer having >=40% actual carbon ratio is subjected to surface oxidizing treatment to give a matrix binding material mixed with 1-10wt.% graphite powder having <=1.0mu average particle diameter. Then the matrix binding material and carbon fibers are molded in a combining way and burnt in a nonoxidizing atmosphere at >=800 deg.C to give the objective composite material. The actual carbon ratio indicates weight ratio of remaining carbon content when burnt in a nonoxidizing atmosphere at >=800 deg.C. When the actual carbon ratio is <40%, the prepared carbon fiber reinforced carbon composite material has difficulty in reaching level of strength performance to the practical use. |
