三维编织碳纤维/环氧复合材料的磨损特性研究

采用RTM工艺制备了三维编织碳纤维增强环氧树脂(记为C_(3D)/EP)复合材料,对其摩擦磨损动力学进行了研究,讨论了载荷及滑动速度等因素对复合材料摩擦磨损性能的影响及磨损机理。结果表明,复合材料的摩擦因数和磨损率随着载荷的增加单调降低。滑动速度对复合材料的摩擦因数影响较小,但对磨损率影响较大。滑动速度较高时,磨损率较低。低速低载时复合材料的磨损机制主要为疲劳和粘着磨损,反之以粘着为主。

Wear properties of 3-D braided carbon fiber/epoxy composites

Epoxy - based composites reinforced with three - dimensional carbon fibers (C_(3D)/EP) were prepared by RTM process. The friction and wear behaviors of C_(3D)/EP composites were studied using a ring - on - block tester. The effects of load and sliding velocity on the wear properties of the composites were discussed and the wear mechanisms were also inves- tigated. The results show that the friction coefficient and wear rate of the composite decrease with the increase of load. The sliding velocity has a slight influence on the friction performance, but a great effect on the wear property. Higher the velocity, lower the wear rate. From the SEM micrographs of the scars and debris, it's believed that the main wear mechanism is fatigue and adhesive wear at a lower load and velocity, and adhesive wear dominates at a higher load or velocity.