Process for producing carbon fibers and the carbon fibers produc

Details Process for producing carbon fibers and the carbon fibers produc Process for producing carbon fibers and the carbon fibers produc

1989-01-03

1989-09-05

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

208 22, 208 44, 208 45, 264 292, 4234474, 4234476, 4234478, D01F 920

Patent

active

048637084

ABSTRACT:
Disclosed herein is a process for producing pitch-based carbon fibers having the specific properties comparable to those of polyacrylonitrile(PAN)-based carbon fibers, wherein an optically isotropic pitch obtained by polymerizing naphthalene at a temperature of not more than 330.degree. C. and heating the thus obtained polymeric material at a temperature of 330.degree. to 440.degree. C. while introducing an inert gas thereinto to remove volatile components therefrom, is subjected to melt-spinning, infusibilization (therosetting) and carbonization and the thus obtained carbonized-fibers are subjected to heat treatment at a temperature of not less that 900.degree. C. to obtain the carbon fibers.

REFERENCES:
patent: 4402928 (1983-09-01), Lewis et al.
patent: 4431513 (1984-02-01), Lewis, II
patent: 4454020 (1984-06-01), Izumi et al.
patent: 4496637 (1985-01-01), Shimada et al.
patent: 4521294 (1985-06-01), Uemura et al.
patent: 4529498 (1985-07-01), Watanabe
Boero, et al., Study of the AlCl.sub.3 Catalytic Activity on Aromatic Hydrocarbons-II, Carbon Journal, vol. 19, No. 5, 1981 pp.341-364.

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