To improve the wear resistance of carbon fabric reinforced polyimide (CF/PI) composite, surface-modified graphene (MG) was synthesized and employed as a filler. The flexural strength, Rockwell hardness and thermal properties of the composites were tested. The composites were also evaluated for their tribological properties in a ring-on-block contact mode under dry sliding conditions. The results showed that the wear rate of MG reinforced CF/PI composites was reduced when compared to unfilled CF/PI composite. It was found that the 1 wt% MG filled CF/PI composites exhibited the optimal tribological properties. The worn surface, wear debris and transfer films were analyzed by scanning electron microscopy (SEM) and optical microscopy (OM) with the results helping to characterize the wear mechanism.

为了提高碳纤维增强聚酰亚胺（CF / PI）复合材料的耐磨性，合成了表面改性石墨烯（MG）并将其用作填料。测试了复合材料的弯曲强度，洛氏硬度和热性能。还在干燥滑动条件下以环对块接触方式评估了复合材料的摩擦学性能。结果表明，与未填充的CF / PI复合材料相比，MG增强CF / PI复合材料的磨损率降低。发现1重量％的MG填充的CF / PI复合材料表现出最佳的摩擦学性能。通过扫描电子显微镜（SEM）和光学显微镜（OM）分析了磨损的表面，磨损碎片和转移膜，其结果有助于表征磨损机理。