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US 5,472,742 AGranted
Method for activating carbon fiber surfaces
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorRonald N. Lee
Life of this patent
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Abstract
Carbon fibers are reacted with an oxidative solution of the type that produces graphitic oxide on the graphitic basal plane without forming significant quantities of graphitic oxides and the treated carbon fibers are then reacted with an oxidative solution of the type that produces CO.sub.2 at edge-plane sites such that active bonding sites on surfaces of the carbon fibers are maximized.
Claims20
A method for producing active chemical sites on carbon fiber surfaces, comprising the steps of:
- reacting carbon fibers with a graphitic oxide former;
- stopping the reaction before graphitic oxide forms on about 5% of the surfaces of the carbon fibers;
- and then reacting the carbon fibers with a CO.sub.2 former.
A method for producing active sites on carbon fiber surfaces, comprising the steps of:
- reacting carbon fibers with a graphitic oxide former;
- stopping the reaction before graphitic oxide has formed about on 5% of the surface area of the carbon fibers;
- and then reacting the carbon fibers with a CO.sub.2 former.
Dependencies are inferred from the claim text.