Japan Exlan Company Limited

Kojiro Arai

Masao Sone

Katsuaki Nomura

Noriaki Sugai

A method of treating carbon fibers in which carbon fibers are supplied into a solution of an electrolyte containing a vinyl monomer, and the carbon fibers are caused to act as the cathode to produce electrolytic reaction in said solution so that the surfaces of the carbon fibers are covered with a polymerization product whereby the ability of the carbon fibers to bundle themselves can be elevated and the adhesiveness between the carbon fibers and resin to be reinforced upon producing carbon fiber composite materials can be improved.

Treatment of carbon fibers

Acrylic synthetic fibers having an interfiber entanglement coefficient of 10-40, an interfiber entangling force after hot-water treatment of not greater than 50 mg and a specific type of silicone resin deposited on the surfaces of the fibers.

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Okayama, Japan

Kojiro Arai