【摘要】 通过KMnO₄、（NH₄）₂HPO₄和浓HNO₃对PAN基碳纤维（T300）进行表面改性,以聚醚醚酮（PEEK）为基体,制备碳纤维（CF）/聚醚醚酮复合材料。利用红外光谱和拉曼光谱对改性后的CF表面结构进行了研究。通过扫描电镜观察了CF和PEEK之间的界面粘结情况,用拉伸实验机对复合材料进行力学测试。结果表明,KMnO₄、（NH₄）₂HPO₄和浓HNO₃处理后CF表面无序度和活性碳原子增多,提高了CF表面活性,其中浓HNO3处理后CF表面含无序度最大,表面活性更强,制备的CF/PEEK复合材料相容性及其力学性能最好。更多还原

【Abstract】 PAN-based carbon fiber were chemically modified with KMnO₄,（NH₄）₂HPO₄ and HNO₃,and carbon fiber reinforced PEEK matrix composites were prepared.The structural and surface analysis of carbon fibers before and after treatments were performed by fourier transform infrared spectroscopy（FT-IR）,laser raman scattering（LRS）and scanning electron microscopy（SEM）.The mechanical tests were performed on a electronic tensile machine.The results showed that the carbon fiber surface modification by KMnO₄,（NH₄）₂HPO₄ and HNO₃ can strengthen fiber surface chemical activity.Among the modification of carbon fiber surface by HNO₃,the fiber surface chemical activity will be increased up to the most.Proper treatment of carbon fiber with HNO₃ proved an effective way to increase the interfacial adhesion and improved the mechanical performance of resulting CF/PEEK composites.更多还原