Process for the surface modification of carbon fibers

Details Process for the surface modification of carbon fibers Process for the surface modification of carbon fibers

1981-01-05

1983-02-15

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

106307, 4234472, D01F 912

Patent

active

043741142

ABSTRACT:
An improved continuous hot gas surface modification process for carbon fibers is provided. The carbon fibers undergoing such processing are passed for a relatively brief residence time through a surface treatment zone to which continuously is fed nitrogen dioxide and air under conditions which have been found to produce a surprisingly effective surface modification. The resulting carbon fibers exhibit a significantly enhanced surface area and an improved ability to bond to a resinous matrix material while retaining a substantial portion of the tensile strength originally exhibited. When incorporated in a resinous matrix material, a fiber reinforced composite article of enhanced interlaminar shear strength is formed.

REFERENCES:
patent: 3476703 (1969-11-01), Wadsworth et al.
patent: 3723150 (1973-03-01), Druin et al.
patent: 3723607 (1973-03-01), Kalnin
patent: 3754957 (1973-08-01), Druin et al.
patent: 3816598 (1974-06-01), Cunningham
patent: 3853610 (1974-12-01), Byrne et al.

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