温度对碳纤维/环氧树脂复合材料界面性能的影响  

Effects of Temperature on the Interfacial Properties of Carbon Fiber/Epoxy Composites

作　　者：程海霞[1] 孙宝忠[1] 

机构地区：[1]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2016年第3期318-322,共5页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(11272087)

摘　　要：通过束纤维抽拔方法,获得了在不同温度条件下碳纤维/环氧树脂复合材料的载荷-位移曲线.结果表明:随着温度的升高,碳纤维/环氧树脂复合材料抽拔破坏最大载荷值逐渐降低,界面黏结强度降低;碳纤维束拔出位移先增大后减小,在环氧树脂玻璃化转变温度处达到最大值;用扫描电子显微镜观察抽拔后碳纤维束表面发现,随着温度的升高,复合材料的失效模式由界面脱黏转变为基体破坏.The load-displacement curves of carbon fiber/epoxy composites under different temperature are measured by fiber bundle pull-out method. The results show that the peak load and interfacial strength of carbon fiber/epoxy composites decrease with the increase of the test temperature, while the failure displacement increases at the first stage and then decreases, the failure displacement reaches the maximum at the glass transition temperature of epoxy resin. The scanning electron microscopy photographs indicate that the failure mode changes from interfacial debonding to matrix damage with the increase of the test temperature.

关 键 词：温度 碳纤维/环氧树脂复合材料 束纤维抽拔 界面强度 

分 类 号：TB332[一般工业技术—材料科学与工程]