层间环氧纳米纤维薄膜对层合板力学性能的影响

Effects of interfacial epoxy nanofibrous films on the mechanical property of composite laminates

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。

The effects of non-woven nanofibrous membranes as interlaminar interfaces on the mechanical performance of laminated composites were investigated. The nanofibers were prepared by electrospinning of Epoxy 609 （E-03）. Morphology and geometry of the nanofibers were analyzed by SEM and TEM, and the mechanical behavior of the non-wovens 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 using three-point flexure and short-beam tests. The results 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 of functional composite can be manufactured by this method.