| 摘要 |
PURPOSE:The titled material, obtained by blending raw material fibers as rein forcing fibers with mesophase pitch containing a mesophase as a matrix, mold ing and firing the resultant blend, having particularly improved heat resistance, etc., a high density as well as strength and suitable as special building materials, etc. CONSTITUTION:A material obtained by blending raw material fibers, e.g. carbon fibers, as reinforcing fibers with mesophase pitch containing a mesophase as a matrix, molding and firing the resultant blend (optimally carbonizing at about 800-1,500 deg.C and subsequently graphitizing the carbonized material at 2,000-2,500 deg.C. The raw material fibers are preferably obtained by thermally decomposing and polycondensing petroleum based or coal based pitch, spinning the resultant mesophase pitch containing >=80% mesophase pitch to from pitch fibers, infusibilizing the above-mentioned pitch fibers in O2 while heating or further previously carbonizing the infusibilized fibers in an inert gas. EFFECT:Improved corrosion and abrasion resistance, vibration-damping character istic, etc. USE:Brakes, mechanical seals, etc. |
