Surface-treatment of carbon fiber

Details Surface-treatment of carbon fiber Surface-treatment of carbon fiber

1981-03-05

1983-08-30

Edmundson, F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

428367, C25F 100

Patent

active

044015330

ABSTRACT:
A method for producing carbon fibers exhibiting excellent adhesive properties to resins and having high strength and heat-oxidation resistance, comprising electrically treating high strength carbon fiber in an aqueous solution of a sulfuric acid salt under conditions such that the current density is from about 0.05 to 0.5 A/m.sup.2 and the product of current density, voltage, and processing time is from about 0.02 to 8 A-V-min/m.sup.2, while continuously moving the carbon fiber as an anode in the aqueous solution.

REFERENCES:
patent: 1378834 (1921-05-01), Bullock
patent: 3671411 (1972-06-01), Ray et al.
patent: 3759805 (1973-09-01), Chapman et al.
patent: 4234398 (1980-11-01), Yamamoto

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