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中文摘要：
采用玄武三号栓．盘式摩擦磨损试验机研究了HNO3／H2SO4混合酸氧化改性炭纤维织物复合材料的摩擦磨损性能；采用傅立叶红外光谱仪、万能材料试验机和扫描电子显微镜分析了氧化改性前后炭纤维织物复合材料的化学结构、力学性能和磨损表面形貌．结果表明：HNO3／H2SO4混合酸氧化改性明显提高了炭纤维织物复合材料的减摩耐磨性能和承载能力，使炭纤维织物复合材料的承载能力提高了60％、磨损率降低了65．9％；炭纤维织物复合材料在高温下的摩擦磨损性能明显优于常温下的摩擦磨损性能，氧化改性后炭纤维织物复合材料的高温摩擦磨损性能明显优于未改性炭纤维复合材料．其原因在于混合酸氧化改性使炭纤维表面产生了活性基团，增强了炭纤维织物与胶粘剂的粘结力，从而提高了炭纤维织物复合材料的减摩抗磨性能．
英文摘要：
Carbon fabric composites （CFC） were treated by oxidation in different acid mixtures of HNO3/H2SO4. The carbon fabric composites sliding against AISI-1045 steel in a pin-on-disk configuration and under dry friction conditions were investigated on a Xuanwu-Ⅲ friction and wear tester. The chemical structure and shear strength of carbon fabric composites were analyzed through fourier transform infrared spectroscopy and universal materials tester respectively; the worn surfaces of the carbon fabric composites were observed by SEM. The load carrying capacity, shear strength, friction-reducing and anti-wear properties of the carbon fabric composites were greatly improved by the oxidation treatment of the acid mixtures of HNO3/H2SO4, and the load carrying capacity of the treated carbon fabric composites increased by 60% , while its wear rate decreased by 65.9%. Furthermore, the carbon fabric composites under higher temperatures exhibited much better friction-reducing and the anti-wear properties than under room temperature, and the treated carbon fabric composites exhibited better friction and wear properties than the untreated carbon fabric composite under higher temperatures. There were some active chemical groups on the surfaces of carbon fabric after the oxidation of acid mixture, the cohesive force between carbon fabric and adhesive was enhanced, so the carbon fabric composites exhibited improved friction-reducing, wear resistance and temperatureresistant ability.
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