UHMWPE纤维/碳纤维混杂复合材料性能研究

Study on Properties of UHMWPE Fiber/Carbon Fiber Hybrid Composites

用层内及层间混杂方式制备了超高相对分子质量聚乙烯(UHMWPE)纤维/碳纤维混杂复合材料,对复合材料的力学性能、动态力学性能(DMA)及微观形貌(SEM)进行了分析比较。结果表明,层内混杂复合材料的综合性能好于层间混杂复合材料,层内混杂复合材料的冲击强度在UHMWPE纤维相对于碳纤维质量分数为43%时有最大值423.3kJ/m2,层内混杂复合材料的贮能模量(E′)、损耗因子(tanδ)和损耗模量(E″)明显地向高温方向移动,混杂复合材料的玻璃化温度(Tg)及模量分别比UHMWPE复合材料提高了2倍和3倍。

Ultrahigh molecular weight polyethylene （UHMWPE）fiber/carbon fiber hybrid composites are prepared by inner laminar and inter laminar hybrid. The mechanical properties, dynamic mechanical analysis and morphologies of the composites are investigated and compared with each other. The results show that properties of inner laminar hybrid composites are better than those of inter laminar hybrid, the impact strength of inner laminar hybrid composites is the largest 423. 3kJ/mz when the UHMWPE fibers mass faction is at 43% relative to carbon fiber, and storage modulus （EP）, dissipation factor （tanδ）and loss modulus （E＂）of the inner laminar hybrid composites shift remarkably toward high temperature. The glass transition temperature （T g）and modulus of inner laminar hybrid composites are 2 and 3 times higher respectively than those of UHMWPE fibers composites.