| 摘要 |
PURPOSE:To obtain a polybenzobisoxazole fiber having high strength, elastic modulus and heat-resistance and excellent adhesiveness by specifying the tensile strength, the tensile elastic modulus and the O/C ratio on the surface of filament. CONSTITUTION:The O/C ratio on the surface of a polybenzobisoxazole fiber filament having a tensile strength of >=4.0GPa and a tensile elastic modulus of >=140GPa is adjusted to >=0.20. The adjustment of the 0/C ratio on the filament surface can be carried out by corona discharge treatment. |
