【摘要】 用挤出和注塑的方法加工了PA 6/K ev lar纤维(KF)复合材料,研究了其拉伸、弯曲和冲击性能以及破坏形态。结果表明,KF表面酰氯化、己内酰胺封端并经阴离子接枝尼龙6处理的PA 6/KF 1复合材料的拉伸强度和弯曲强度均得到明显提高,弯曲模量基本不变,冲击强度则有所下降。由断面形态可知,PA 6/KF 0拉伸破坏呈界面脱粘破坏形态,而PA 6/KF 1复合材料呈部分非界面脱粘破坏。弯曲和冲击破坏时PA 6/KF 1复合材料的断口纤维粘附大量尼龙6树脂,而PA 6/KF 0复合材料粘附尼龙6量很少。界面粘接良好导致PA 6/KF 1复合材料冲击性能下降。更多还原

【Abstract】 Extrusion and squirt was used to process the PA6/KF composite,and the influence of fiber surface modification on the mechanic properties and failure morphology was discussed.The results show that the PA6/KF1 composite′s tensile strength and flexural strength are inproved,but the impact strength is declined.The tensile failure morpholigy of PA6/KF0 is presenting an interfacial taking off adhesive,but the tensile failure morpholigy of PA6/KF1’s just presenting a part.The flexural and impact fracture morpholigy show that the adhesive PA6 on the PA6/KF1 is much more than that on the PA6/KF0.However,the nice interfacial adhesive causes the declining of the PA6/KF1’s impact strength.更多还原