Process for producing pitch carbon fibers

Details Process for producing pitch carbon fibers Process for producing pitch carbon fibers

1984-12-18

1986-10-21

Hunter, Jeanette

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

428394, 4234474, D01F 922, D01F 912

Patent

active

046184635

ABSTRACT:
Provided is a process for producing pitch carbon fibers by subjecting pitch fibers obtained by melt-spinning a carbonaceous pitch to infusibilization treatment and then to carbonization treatment or both carbonization treatment and subsequent graphitization treatment, characterized in that a dimethyl polysiloxane having a viscosity at 25.degree. C. in the range of 12,000 to 1,000,000 cSt is applied to the fibers after the infusibilization treatment, and the infusibilized fibers with the dimethyl polysiloxane thus applied thereto are then subjected to the carbonization treatment or both the carbonization treatment and the subsequent graphitization treatment.

REFERENCES:
patent: 3629379 (1971-12-01), Otani
patent: 4259307 (1981-03-01), Maruyama
patent: 4284615 (1981-08-01), Maruyama
patent: 4496631 (1985-01-01), Adachi

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