层间环氧纳米纤维薄膜对层合板力学性能的影响

应用静电纺丝技术制备环氧纳米纤维, 将收集的纳米纤维无纺布薄膜插入层合板的层间界面并固化成型, 研究其对层合板力学性能的影响。采用扫描电子显微镜(SEM) 和透射电子显微镜( TEM) 分析了纳米纤维的形貌和尺寸, 并测试了纳米纤维薄膜的拉伸性能; 应用三点弯曲和短梁剪切方法测试了层合板的力学性能。结果表明, 一定厚度的纳米纤维无纺布薄膜对层合板的力学性能无显著影响。因此, 应用该方法可以制备一种新型的功能复合材料。 

Effects of interfacial epoxy nanof ibrous films on the mechanical property of composite laminates

The effect s of non-woven nanofibrous membranes as interlaminar interfaces on the mechanical performance of laminated composites were investigated. The nanofibers were prepared by elect rospinning of Epoxy 609( E-03) . Morphology and geomet ry of the nanofibers were analyzed by SEM and TEM , and the mechanical behaviorof the non2wovens was understood through tensile testing. The non-woven fabrics were incorporated into the interlaminar interfaces of lamina plies before curing. The mechanical properties of the cured panels were measured usingthree2point flexure and short-beam test s. The result s show that the mechanical performance of the composite laminates only has a little variation when a proper thickness of nanofiber nonwovens was used. Thus , a new type offunctional composite can be manufactured by this method.