Gasifiable carbon-graphite fibers

Details Gasifiable carbon-graphite fibers Gasifiable carbon-graphite fibers

1979-04-17

1982-01-19

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 37EP, 260 37N, 260 37SB, 260 40R, C08L 6106

Patent

active

043116302

ABSTRACT:
Fine, carbon-graphite fibers do not combust during the combustion of a composite and are expelled into the air as fine conductive particles. Coating of the fibers with a salt of a metal having a work function below 4.2 eV such as an alkaline earth metal salt, e.g., calcium acetate, catalytically enhances combustion of the fibers at temperatures below 1000.degree. C. such that the fibers self-support combustion and burn to produce a non-conductive ash. Fire-polishing the fibers before application of the coating is desirable to remove sizing to expose the carbon surface to the catalyst.

REFERENCES:
patent: 3767774 (1973-10-01), Hou
patent: 3833402 (1974-09-01), Elban et al.
patent: 3876444 (1975-04-01), McKee
patent: 4146668 (1979-03-01), Dorey et al.

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