为了研究填料(纳米粒子和PTFE)对聚酯织物增强复合材料的拉伸及摩擦学性能(轴向及偏轴方向)的影响,使用手糊成型的方法制备了四种环氧树脂基聚酯织物增强复合材料.根据拉伸应力-应变曲线和断口形貌图讨论了拉伸断裂机理.使用环-块式结构的Amsler摩擦磨损试验机测试织物增强复合材料的摩擦学性能.结果表明:对于纯环氧树脂/织物增强复合材料来说,聚酯织物在整个织物增强复合材料的拉伸和摩擦磨损测试中起到了主要的抗拉和耐磨作用;但当在环氧树脂中加入填料后,环氧树脂基体在抗拉和耐磨性方面起到了越来越重要的作用.拉伸性能的提高是由于纤维-基体间界面的改善;由于填料具有优异的摩擦磨损性能,从而使织物增强复合材料的摩擦学性能得到了提高;并且纳米粒子和PTFE对于织物复合材料性能的提高起到了协同的作用.织物增强复合材料偏轴方向的拉伸性能和摩擦学性能与其在轴向的拉伸性能和摩擦学性能不同.
Four fabric composites were prepared in order to study the influence of fillers (nanoparticles and PTFE) on the tensile and tribological properties (both on-axis and off-axis directions) of polyester fabric composites.Tensile fracture mechanism was discussed based on tensile stress-strain.curves and fractographs.Tribological tests were conducted on an Amsler friction and wear tester using a blockon-ring arrangement.It was observed that it was the polyester fabric played a main role in the tensileresistant and wear-resistant properties of the neat epoxy/polyester fabric composites,but once fillers were added matrix played more and more important role.The improvement of tensile properties was attributed to the improvement of fiber-matrix adhesion.And the excellent tribological performance of the fillers improved the tribological properties of polyester fabric composites.The tensile behaviors and tribological properties of off-axis directions are quite different from those of on-axis directions.
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