Enhancement of ultimate tensile strength of carbon fibers

Details Enhancement of ultimate tensile strength of carbon fibers Enhancement of ultimate tensile strength of carbon fibers

1974-01-10

1976-01-06

Woo, Jay H.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 29, 264DIG19, 423448, 423460, B29C 2500, D01F 912

Patent

active

039313921

ABSTRACT:
A method of enhancing the tensile strength of carbon fibers of laboratory d commercial materials. Carbon fibers are immersed at ambient temperatures in liquid bromine or bromine dissolved in a solvent within a chemical resistant container for a period of time, the bromine is then removed by flushing with an inert gas. The removed bromine may be recovered and reused by condensing the vapor; small traces of bromine may remain within the fiber. It has been found that the bromine treatment enhances the tensile strength of the treated fiber.

REFERENCES:
patent: 3035901 (1962-05-01), Best
patent: 3427120 (1969-02-01), Shindo et al.
patent: 3529934 (1970-09-01), Shindo et al.
patent: 3556729 (1971-01-01), Holsten et al.
patent: 3627571 (1971-12-01), Cass
patent: 3660140 (1972-05-01), Scola et al.

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