Process for producing graphite films and fibers

Details Process for producing graphite films and fibers Process for producing graphite films and fibers

1988-06-07

1990-04-10

Lorin, Hubert C.

Coating processes

Electrical product produced

Carbon base

264 291, 264 292, 264 295, 264 296, 264 297, 264 83, 264101, 264129, 264234, 2642888, 2642905, 264345, 423448, 427226, 427227, 4273855, D01F 914, B29C 7102

Patent

active

049159844

ABSTRACT:
A process for producing almost perfect graphite films and fibers at lower graphization temperatures wherein a film or fiber of a polymer selected from a defined group is subjected to a preliminary heat treatment at a temperature of 400.degree. to 700.degree. C., under tension, in vacuo or in an inert gas, and then heat treating the film or fiber at a temperature of at least 1600.degree. C. in vacuo or in an inert gas, to graphitize the film or fiber. The process can be modified to produce graphite films having excellent electric conductivity and mechanical properties, by heat treating a polymer selected from a second defined group at a temperature of at least 1800.degree. C. in vacuo or in an inert gas, impregnating the film with a binder component, and then heat treating the impregnated film at a temperature of not more than 1400.degree. C.

REFERENCES:
patent: 3089195 (1963-05-01), Woodburn, Jr.
patent: 3449077 (1969-06-01), Stuetz
patent: 3528774 (1970-09-01), Ezekiel et al.
patent: 3635675 (1972-01-01), Ezekiel
patent: 3969124 (1976-07-01), Stewart
patent: 4237109 (1980-12-01), Hiramatsu et al.
patent: 4348343 (1982-09-01), Akerberg et al.

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