Process for producing carbon fiber

Details Process for producing carbon fiber Process for producing carbon fiber

1983-12-22

1985-11-12

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234471, 4234478, 264 292, D01F 912

Patent

active

045527431

ABSTRACT:
A process for producing carbon fiber is disclosed, which comprises a preoxidation step for heating precursor fibers in an oxidizing atmosphere and converting them into partially oxidized fibers, an oxidizing step for heating the partially oxidized fibers in an oxidizing atmosphere and converting them into oxidized fibers, and a carbonization step for heating the oxidized fibers in an inert atmosphere and converting them into carbonized fibers, in which in the preoxidation step the precursor fibers are heated at a temperature of about 200.degree. to 250.degree. C. and in which a portion or the whole of the exhaust gas from the oxidation step is supplied into the preoxidation step as the oxidation atmosphere gas and the exhaust gas from the preoxidation step is subjected to a burning treatment.

REFERENCES:
patent: 4100004 (1978-04-01), Moss et al.
patent: 4259307 (1981-03-01), Maruyama
John C. Olsen Unit Processes and Principles of Chemical Engineering 1932, pp. 1-3.

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