Electrically-conductive composite fiber

Details Electrically-conductive composite fiber Electrically-conductive composite fiber

D - Textiles, Paper

01

F

D01F 8/12 (2006.01) D01F 1/09 (2006.01) H01B 1/24 (2006.01)

Patent

CA 2322240

To provide an electrically-conductive composite fiber which does not suffer component separation during spinning, retains its good initial conductive performance for a long period of time, and exhibits good color fastness. The electrically-conductive composite fiber is composed of an electrically-conductive polyamide layer (A) containing 15--50 wt% of electrically-conductive carbon black and a protective polymer layer (B) of polyamide of specific composition, wherein said electrically-conductive polyamide layer (A) exposes itself at the fiber surface such that the number of exposed parts is 3 or more and the length (L1 µ m) of one exposed part along the periphery of a cross section satisfies the expression below, and said protective polymer layer (B) covers not less than 60% of the periphery of the fiber cross section and accounting for 50-97 wt% of the total fiber weight. 0.1 <= L1 <= L2/10 (1) (where L2 stands for the length (in µm) of the periphery of a cross section of one filament.)

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