Rapid stabilization of polyacrylonitrile fibers prior to carboni

Details Rapid stabilization of polyacrylonitrile fibers prior to carboni Rapid stabilization of polyacrylonitrile fibers prior to carboni

1972-11-17

1976-05-04

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

81155, 264 29, C01b 3107

Patent

active

039549470

ABSTRACT:
An improved process for producing carbon fibers by the pyrolysis of polyacrylonitrile fibers wherein the extended heat treatment heretofore required in order to stabilize the fiber structure so that it may be carbonized is completed in substantially shorter periods of time by effecting stabilization in an atmosphere containing both hydrogen chloride and oxygen. After the fibers have been thermally stabilized in this manner, they may be rapidly carbonized in times as short as one-half minute.

REFERENCES:
patent: 3305315 (1967-02-01), Bacon et al.
patent: 3337301 (1967-08-01), McWhorter et al.
patent: 3427120 (1969-02-01), Shindo et al.
patent: 3441378 (1969-04-01), Didchenko
patent: 3529934 (1970-09-01), Shindo
patent: 3556729 (1971-01-01), Holsten et al.
Shindo et al., "Applied Polymer Symposia," No. 9, (1969), pp. 305-313.

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