采用拉-挤成型法制备了直径为9.0mm的单向连续碳纤维-玻璃纤维同心混杂增强环氧树脂复合棒材,研究了单向连续碳纤维/玻璃纤维(混杂体积比1∶1)同心混杂结构对混杂复合材料力学性能及破坏机制的影响。结果表明:同心混杂复合材料具有优异的拉伸性能,且在层间剪切强度方面表现出正向混杂效应。受混杂结构的影响,不同同心结构的复合材料表现出不同的破坏机制,但其破坏方式均呈现出多相、多层次的复杂性,属于多级破坏。
s Unidirectional continuous carbon fiber-glass fiber concentric hybrid reinforced epoxy resin(EP) composite rods with diameter of 9.0mm were prepared by tension-extrusion method.The effects of unidirectional continuous carbon fiber/glass fiber concentric hybrid structure (hybrid volume ratio 1∶1) on the mechanical properties and failure mechanism of the hybrid composites were studied.The results shown that the hybrid composites had excellent tensile properties and positive hybrid effect on interlaminar shear strength.Composites with different concentric structures exhibited different failure mechanisms due to the influence of hybrid structures,but their failure modes shown multiphase and multilevel complexity,which belonged to multistage failure.
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