玻璃纤维增强环氧树脂基复合材料的低温性能研究

对S玻璃纤维和E玻璃纤维增强环氧树脂基复合材料的常温和低温力学性能进行实验，结果表明：玻纤／环氧树脂单向复合材料力学性能随着纤维含量增加而增强，当纤维体积含量为50％时，复合材料具有较好的综合力学性能，且复合材料的强度随着温度的降低呈增加趋势。当温度降到76K时材料的强度达到最高值，S玻纤／环氧复合材料的拉伸强度最高值可达2．1GPa；E玻纤／环氧复合材料的最大拉伸强度也达到1．4GPa。其原因是由于低温下玻璃纤维的横向收缩比树脂基体小，界面摩擦力得到增强，从而获得高的界面粘接强度。

Study on relatively low temperature properties of glass fiber reinforced epoxy resin composites

The experimental study about the performance of S glass fiber and E glass fiber reinforce epoxy resin composites at low and normal temperature respectively has been conducted in this paper.The results show that the unidirectional composite mechanics performance of glass fiber epoxy resin is strengthened with the increase of the fiber content.The composite has better integrative mechanics performance when fiber content is 50%.The results also indicate that the composite strength is reinforced with the fall o...