Patent ID: 6638615
Filing Date: 2003-10-28
Classification: C08J,D01F,Y10T

Abstract:
Carbon fibers comprising a composition deposited on a surface of said carbon fibers comprising a polymer having at least one polar group and at least one group capable of reacting with a matrix resin, wherein the polymer is substantially insoluble in said matrix resin and said polar group is selected from the group consisting of amido groups, imido groups, urethane groups, urea groups, isocyanate groups, sulfo groups, and mixtures thereof, said matrix resin is selected from the group consisting of an unsaturated polyester resin, vinyl ester resin and phenol resin, said group capable of reacting with said matrix resin selected from the group consisting of hydroxyphenoxy groups, phenoxy groups, phenolic hydroxyl groups vinyl groups, acrylate groups, methacrylate groups and mixtures thereof, and said fiber surfaces have a surface oxygen concentration O/C ratio of from about 0.02 to about 0.3 as measured by X-ray photoelectron spectroscopy.