Experimental characterization of thermo-oxidation-induced shrinkage and damage in polymer-matrix composites

被引：50
作者：
Dinh Quy Vu [1 ]
Gigliotti, Marco [1 ]
Lafarie-Frenot, Marie Christine [1 ]
机构：
[1] Univ Poitiers, Dept Phys & Mecan Mat, Inst Pprime, CNRS,ENSMA,UPR 3346, F-86961 Futuroscope, France
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2012年 / 43卷 / 04期
关键词：
Polymer-matrix composites (PMCs); Environmental degradation; Surface analysis; Electron microscopy; ELEVATED PRESSURE; EPOXY; TEMPERATURE; MECHANISMS; BEHAVIOR;
D O I：
10.1016/j.compositesa.2011.12.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper focuses on the experimental characterization of thermo-oxidation in carbon-fiber-reinforced polymers (CFRPs) exposed to "high" temperatures (up to 150 degrees C) and "high" oxygen pressures (up to 5 bars), at the microscopic scale. Unidirectional IM7/977-2 composite specimens were aged at 150 degrees C under atmospheric air and under oxygen pressure (1.7 bars and 5 bars): periodic tests were carried out to characterize degradation phenomena after different aging times. The thermo-oxidation-induced resin shrinkage and fiber/matrix debonding were measured on the CFRP sample surface by confocal interferometric microscopy (CIM) and scanning electron microscopy (SEM). The results show that thermo-oxidation-induced degradation strongly depends on aging time, distance between fibers and partial oxygen pressure. (c) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：577 / 586
页数：10
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