| 摘要 |
PURPOSE:To obtain the title carbon fiber improved in both compatibility and adhesivity by treating carbon fiber with an aminosilane coupling agent. CONSTITUTION:Firstly, a precursor consisting mainly of e.g. polyacrylonitrile is baked into carbon fiber >=3t/mm<2> in elastic modulus and >=50kg/mm<2> in tensile strength. This carbon fiber is treated, if needed, through e.g. air oxidation and immersed in an aqueous solution of an aminosilane coupling agent such as a gamma-aminopropyltrimethoxysilane of the formula (X is hydrolyzable group bound to Si atom like Cl or OCH3; YR is NH2C2H4, etc.) followed by heating treatment to effect 0.1-10wt.% in the pickup of the coupling agent. Furthermore, if needed, the resultant fiber is coated with a surfactant like an alkylbenzenesulfonate, thus obtaining the objective carbon fiber. |
