Process for producing carbon fibers

Details Process for producing carbon fibers Process for producing carbon fibers

1976-09-01

1978-09-12

Woo, Jay H.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 292, 264182, 4234476, C01B 3107

Patent

active

041138473

ABSTRACT:
Carbon fibers are prepared by spinning a copolymer of a carboxyl group-containing unsaturated monomer and at least 85 mol% acrylonitrile, washing the filaments with water, stretching the filaments in hot acid water having a pH below 3.5, and heating the resultant fibers to cause carbonization or graphitization.

REFERENCES:
patent: 3733386 (1973-05-01), Shimoda et al.
patent: 3768966 (1973-10-01), Matsumura et al.
patent: 3886263 (1975-05-01), Shindo et al.
patent: 3917776 (1975-11-01), Sato et al.
patent: 3954947 (1976-05-01), Didchenko et al.
patent: 3972984 (1976-08-01), Iizuka et al.
patent: 4001382 (1977-01-01), Matsumura et al.
patent: 4002426 (1977-01-01), Chenevey et al.

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