Carbon fibers (CFs) are widely used as reinforcing components in composites due to their exceptional properties, such as high tensile strength and thermal stability. Owing to their inert and smooth surfaces, CFs lack polar groups, resulting in weak bonding performance in fiber-polymer composites. To improve the poor bonding between CFs and polymer resin, various surface treatment methods are employed to increase the reactive sites, surface roughness, and introduce functional groups. Among various techniques, oxidation methods effectively introduce oxygen-rich functional groups onto the CF surface, which enables covalent bond formation, enhances the interface, and facilitates effective stress transfer between fiber and matrix. Such treatment enhances the interlaminar shear strength (ILSS) by 43.3%.
Pour en savoir plus :Carbon Fiber Surface Functionalization Strategies for Enhancing the Performance of Carbon Fiber-Reinforced Composites: A Review
