| 초록 |
In this study, the influence of oxyfluorination at different temperatures on the interfacial shear strength (IFSS) of carbon fiber/epoxy composites was investigated. The surface properties of the oxyfluorinated carbon fibers were studied through the measurement of XPS and SEM. A single fiber pull-out test was executed to investigate the basic characteristics of the single carbon fiber/matrix interface. Based on Greszczuk’s geometrical model, the debonding force for pull-out of the fiber from the resins was discussed. It was shown that the surface functional groups containing oxygen on the oxyfluorinated carbon fibers exert strong effects on the surface energetics of fibers. Moreover, the formation of CFx physical bonding of the carbon fibers with fluorine increases the surface polarity of the fibers, resulting in increased IFSS of the composites, due to the improvement of interfacial adhesion between fibers and matrix resin. |
