In situ characterization on dimensions and properties of the interphase in carbon fiber reinforced polymer composites by peak force quantitative nano-mechanics technique

被引：0
|
作者：
Niu Y. [1 ]
Yang Y. [1 ]
Meng J. [2 ,3 ]
机构：
[1] Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin
[2] Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering Mechanics, Southeast University, Nanjing
[3] National Sports Research Center, Taishan Sports Industry Group, Dezhou
来源：
Niu, Yifan (yifan.niu@foxmail.com) | 1600年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 34期
关键词：
Atomic force microscope; Carbon fiber; Interphase; Modulus mapping; Polymer matrix composites;
D O I：
10.13801/j.cnki.fhclxb.20160526.004
中图分类号：
学科分类号：
摘要：
In order to quantitatively characterize the interphase of carbon fiber reinforced polymer composites, in situ peak force quantitative nano-mechanics (PF-QNM) technique was introduced. Its general principles, calibration method and applicability were analyzed. PF-QNM technique was used to measure the interphase dimensions and in situ modulus of each component of carbon fiber/poly-ether-ether-ketone (T300/PEEK), carbon fiber/poly-ether-sulfone (T300/PES) and carbon fiber/epoxy (T700/TR1219B). The results show that this technique can determine the width and elastic modulus of the interphase in nanoscale lateral resolution. The gradient increases of modulus exist in the three composites from the matrix region to carbon fiber region. The interphase thicknesses of T300/PEEK, T300/PES and T700/TR1219B are (69.3±7.9)nm,(101.3±10.2)nm and (48.4±5.4)nm, respectively. In this study, the interphase thickness of thermoset composites is smaller than that of thermoplastic composites. The statistical analysis shows that the average modulus of resin matrix of T300/PEEK, T300/PES and T700/TR1219B are 4.36 GPa, 4.96 GPa and 3.59 GPa, respectively, which is close to their elastic modulus in bulk materials. © 2017, Chinese Society for Composite Materials. All right reserved.
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页码：501 / 507
页数：6
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