COMPOSITE FIBER COMPRISING WHOLLY AROMATIC POLYAMIDE AND CARBON NANOTUBE

摘要

A composite fiber, which includes: 100 parts by weight of a wholly aromatic polyamide mainly including structural units of the following formulae (A) and (B): -NH-Ar<1>-NH- -OC-Ar<2>-CO- where in the formulae (A) and (B), Ar<1> and Ar<2> each independently represent a bivalent aromatic group having 6 to 20 carbon atoms; and 0.01 to 100 parts by weight of carbon nanotubes with an average diameter of 300 nm or less, and an average aspect ratio of 5.0 or more, characterized in that the carbon nanotubes are oriented in the fiber axis direction. It is excellent in mechanical characteristics.