Processing agent for fiber and carbon fiber treated with the treatment agent for fiber and carbon fiber composite material containing the carbon fiber

摘要

An object of the present invention is to provide a treating agent for fibers which is excellent in adhesiveness with a matrix resin and can form a film excellent in water resistance on fibers.According to the present invention, a treating agent for fibers containing an aqueous medium, a water-insoluble polyamide dispersed in the aqueous medium and 2 to 50 parts by mass of a water-soluble polyamide based on 100 parts by mass of the water-insoluble polyamide Is provided.