泡沫镍/环氧树脂/碳化硅双连续相复合材料的拉伸性能

Tensile Properties of Co-continuous Composites of Nickel Foam/Epoxy Resin/Silicon Carbide

制备不同添加量碳化硅、不同规格泡沫镍增强的环氧树脂双连续复合材料,对其拉伸性能进行了评价。结果表明,泡沫镍的孔径较小、体密度较大时复合材料的拉伸强度高,碳化硅添加量对力学性能的影响较小。根据对拉伸断口和拉伸曲线的观察和分析,探讨了泡沫镍/环氧树脂/碳化硅双连续复合材料拉伸破坏过程和机制。

Co-continuous composites of nickel foam/epoxy/silicon carbide with different SiC content and different specification of nickel foam were prepared and then their tensile property was investigated. The results show that the tensile strength of the composite is high when made of nickel foam with small pore diameter and high relative density, while the SiC content have small influence on the tensile proper- ty. The damage process of the co-continuous composite and the relevant mechanism was revealed by ob- serving the morphologies of the tensile fracture and analyzing the tensile curves.