中文摘要：

为了准确测定碳纤维增强树脂基复合材料界面结构的形貌和尺寸,本文中介绍了一种原位纳米力学动态模量成像技术,并采用该方法对碳纤维增强热固性树脂基复合材料进行了测试,对该技术在界面结构测试上的参数设置、数据处理方法以及适用性等方面进行了分析。研究表明,该方法的横向分辨率可以达到纳米尺度,适于测量界面尺寸在纳米级别的碳纤维复合材料界面形貌与尺寸。对于碳纤维/环氧树脂和碳纤维/双马树脂体系,界面区的储能模量呈梯度变化,根据储能模量成像图的统计分析可得到界面的形貌和厚度。所得界面平均厚度在100 nm左右,横截面上界面形貌呈不均匀的＂河流状＂,并与碳纤维表面形貌相似。

英文摘要：

In order to accurately measure the topography and dimension of the interphase structure in carbon fiber reinforced resin matrix composites,a quantitative,in-situ nanomechanical imaging technique was used to map the dynamic mechanical properties of carbon fiber reinforced thermoset resin matrix composites.This technique for interphase structure testing was analyzed including parameter setting,data processing and its applicability.The results indicate that the nanoscale lateral resolution of the method can resolve the width and topography of the interphase in carbon fiber composites.For the carbon fiber/epoxy resin and carbon fiber/bismaleimide resin systems,the storage modulus presents the gradient change in the interphase region.The average interphase width is about 100 nm obtained by statistical analysis on the storage modulus image,and the morphology of interphase on the cross section is ＂river-like＂,which is similar to the surface topography of carbon fibers.