| 摘要 |
PURPOSE:To obtain a carbon-based inorganic yarn having the same modulus of elasticity as that of pitch yarn, excellent strength, oxidation resistance and wetting to matrix by spinning a specific silicon-containing polycyclic aromatic polymer, infusibilizing and burning. CONSTITUTION:A silicon-containing polycyclic aromatic polymer which is a thermal reaction product, at 200-500 deg.C, of 100 pts.wt. random copolymer wherein silicon of an organosilicon polymer comprising a carbosilane shown by formula I (R1 is H or CH3) and a silastyrene shown by formula II (R2 and R3 are CH3, phenyl or H) in a ratio of (7:3)-(3:7) is at least partially bonded through an aromatic ring of pitch (and heat-treated material thereof) and silicon carbon connecting group and 5-50,000 pts.wt. polycyclic aromatic compound in a mesophase state (and in an optically isotropic state) obtained by heat-treating pitch is spun, infusibilized and burnt in vacuum or in an inert gas atmosphere at 800-3,000 deg.C. |
