Composite fiber including wholly aromatic polyamide and carbon nanotube

Abstract

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—Ar1—NH—  (A) —OC—Ar2—CO—  (B) where in the formulae (A) and (B), Ar1 and Ar2 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.

Dependencies are inferred from the claim text.