Effect of Surface Quality of Rayon-Base Carbon Fabrics on Wettability of Phenolic Prepreg

The wettability between rayon-base carbon fabrics (CF) and phenolic resin is key to prepreg quality and the total quality of the composites. Three types of rayon-base CF with different characteristics were selected. The surface sizing, its content, and the degree of graphitization of CF, and their effects on the wettability of CF by phenolic resin were analyzed. The results showed that the content of surface sizing and the degree of graphitization of CF were the main factors to determine the wettability.