Process for the infusibilizing treatment of pitch fiber

Details Process for the infusibilizing treatment of pitch fiber Process for the infusibilizing treatment of pitch fiber

1986-10-28

1988-11-01

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234471, 4234472, 4234476, 4234479, 264 292, D01F 912, D01F 914

Patent

active

047819081

ABSTRACT:
The present invention relates to a process for the infusibilization of pitch fiber which comprises, in the production of pitch type carbon fiber, attaching a powder of solid lubricant to a pitch fiber and then subjecting the pitch fiber to an infusibilizing treatment. According to the present invention, the use of oxidant used in prior processes can be excluded, the process can be operated with a high safety, and the period of time required for the infusibilization can be shortened. Further, the infusibilized fiber obtained according to the invention can directly be introduced into the carbonization process, without any particular washing treatment and the like.

REFERENCES:
patent: 3552922 (1971-01-01), Ishikawa et al.
patent: 3997654 (1976-12-01), Kolling et al.
patent: 4259307 (1981-03-01), Maruyama
patent: 4275051 (1981-06-01), Barr
patent: 4276278 (1981-06-01), Barr et al.
patent: 4496631 (1985-01-01), Adachi et al.

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