A kind of novel Chinese carbon fibers reinforcement with grafted graphene oxide on its surface was prepared by "grafting to" method. Functional groups and morphology of the resulting samples were examined by IR, XPS and AFM. The wettability and tensile strength of carbon fibers were investigated by contact angle measurement and single strands extension. The interfacial shear strength of Chinese carbon fibers reinforced composites was measured by micro-debonding method. The results show that the surface roughness, surface energy and tensile strength of the novel Chinese carbon fibers reinforcement are increased up to 166%, 46.3% and 7.8%, respectively. And the interfacial shear strength of Chinese carbon fibers reinforced composites is enhanced up to 111.7%.%利用“Grafting-to”化学修饰法制备氧化石墨烯接枝国产碳纤维新型增强体.利用红外光谱、X射线光电子能谱和原子力显微镜对样品的官能团和表面形貌进行表征；利用接触角测量、单丝拉伸方法研究了接枝前后纤维单丝的润湿性能及拉伸强度,并通过微脱粘法分析了其复合材料的界面剪切强度.结果表明:氧化石墨烯的接枝修饰使国产碳纤维表面粗糙度提高了166％,表面能提高了46.3％,拉伸强度提高了7.8％,复合材料的界面剪切强度提高了111.7％.
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