Process for producing carbon fibers having high strand strength

Details Process for producing carbon fibers having high strand strength Process for producing carbon fibers having high strand strength

1991-11-21

1994-09-20

Lewis, Michael

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 292, 4234478, D01F 9145

Patent

active

053487192

ABSTRACT:
A process for producing carbon fibers having high strand strength, which comprises subjecting pitch fibers obtained by melt-spinning pitch, followed by gathering, to infusible treatment to obtain infusible fibers, followed by carbonization treatment, and if necessary, graphitization treatment, to obtain carbon fibers, wherein the infusible fibers or the carbon fibers are heat-treated in an atmosphere containing steam or carbon dioxide at a temperature of from 500.degree. to 1,800.degree. C.

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patent: 4024227 (1977-05-01), Kishimoto et al.
patent: 4032430 (1977-06-01), Lewis
patent: 4362646 (1982-12-01), Ikegami et al.
patent: 4412937 (1983-11-01), Ikegami et al.
patent: 4814145 (1989-03-01), Yoshida et al.
patent: 4921686 (1990-05-01), Yoshida et al.
patent: 4975263 (1990-12-01), Furuyama et al.
patent: 5047292 (1991-09-01), Sadanobu et al.

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