Process for continuous graphitization of graphitizable precursor

Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon

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4234474, 4234476, 423448, D01F 922

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active

043011365

ABSTRACT:
An improved process for manufacturing high-grade and high-quality graphite fibers by the steps of (a) heating carbon fibers from acrylic fibers in an initial heating zone while exposed to an atmosphere of inert gas having a maximum temperature from about 1700.degree. C. to 1900.degree. C., and (b) then heating the resulting fibers in a subsequent heating zone while exposed to an atmosphere of inert gas having a maximum temperature from 2300.degree. C. to 2700.degree. C.

REFERENCES:
patent: 3700511 (1972-10-01), Whitney et al.
patent: 3764662 (1973-10-01), Roberts
patent: 3900556 (1975-08-01), Clarke
patent: 3954950 (1976-05-01), Ram et al.

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