The surface treatment of carbon fibers (CFs) was carried out using a self-synthesized sizing agent. The effects of sizing agent on the surface of CFs and the interface properties of CF/polymethyl methacrylate (PMMA) composites were mainly studied. Scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and static contact angle were used to compare and study the CFs before and after the surface treatment, including surface morphology, surface chemical element composition, and wettability of the surface. The influence of sizing agent on the mechanical properties of CF/PMMA resin composite interface was investigated. The results show that after sizing treatment, the CF surface O/C value increased by 35.1% and the contact angles of CF and resin decreased by 16.2%. The interfacial shear strength and interlayer shear strength increased by 12.6%.

碳纤维（CFs）的表面处理是使用自合成的上浆剂进行的。主要研究了上浆剂对CFs表面的影响以及CF /聚甲基丙烯酸甲酯（PMMA）复合材料的界面性能。使用扫描电子显微镜，傅立叶变换红外光谱，X射线光电子能谱和静态接触角对表面处理前后的CF进行比较和研究，包括表面形态，表面化学元素组成和表面润湿性。研究了施胶剂对CF / PMMA树脂复合材料界面力学性能的影响。结果表明，施胶后CF表面O / C值提高了35.1％，CF与树脂的接触角降低了16.2％。