超高分子量聚乙烯纤维/碳纤维混杂复合材料研究

 研究了在层内和层间两种混杂方式下,T300与表面处理前后的超高分子量聚乙烯（UHMWPE）纤维混杂复合材料的弯曲强度和ILSS的变化,结果表明层间混杂复合材料的黏结性比层内混杂好。在相同的混杂方式下,采用未处理的DC88纤维、合成的VE树脂,混杂复合材料的ILSS比E 51体系提高25%以上。采用VE树脂和处理后DC88/T300层间混杂,控制含胶质量在40%时,ILSS达到42.5MPa,是未处理的DC88/E 51体系的ILSS的5倍。混杂复合材料密度在1.12～1.24g/cm³之间,在航空航天结构材料减重上有良好的应用前景。

Study of UHMWPE Fiber/Carbon Fiber Hybrid Composite

Carbon fiber T300 is chosen as a co-hybrid fiber, and two different kinds UHMWPE fiber/T300 hybrid composites are prepared in both inner-laminar and inter-laminar styles. The inter-laminar hybrid composites exhibite better adhesion than the inner-laminar ones. VE resin which is synthesized in lab increases the adhesion by 25 % in comparison to epoxy resin E-51.For the optimized system DC88/T300/ VE, the ILSS reaches 42.5MPa, 5 times of the untreated DC88/ E-51 system. ILSS increases with the increasing of resin content at first, and then decreases with further increase, so that a maximum ILSS is obtained in each of the resin systems. The VE peak occurres at a lower resin content range than E-51 peak, indicating VE has a better adhesion with DC88 than epoxy resin E-51.The density of hybrid composites changes from 1.12 g/cm~3 to 1.24 g/cm~3, which suggestes that the hybrid composite has a potential application in space structures.