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制备了泡沫铝、泡沫铝-环氧树脂及含有不同体积分数空心玻璃微珠(HGM)的三种泡沫铝-HGM/环氧泡沫互穿相复合材料(IPC)。通过一系列准静态压缩实验,观察了其变形形貌,研究了其弹性模量、屈服极限、比强度及比刚度等力学性能与HGM体积分数的关系。通过三点弯曲实验,研究了IPC的弯曲极限载荷、弯曲弹性模量等性能,分析了其断口形貌与材料结构的关系。实验结果表明:四种IPC的力学性能均较纯泡沫铝有大幅度的提高,其中,泡沫铝-环氧树脂的压缩和弯曲力学性能最好。随着复合材料中HGM体积分数增加,IPC力学性能逐渐缓慢降低。
Aluminum foam, aluminum foam - epoxy resin and three kinds of foam aluminum - HMG / epoxy foam interpenetrating composites (IPC) were prepared with different volume fractions of hollow glass microspheres (HGM). Through a series of quasi-static compression experiments, the deformation morphology was observed, and the relationship between the mechanical properties such as elastic modulus, yield strength, specific strength and specific stiffness and HGM volume fraction was studied. Through the three-point bending test, the bending ultimate load and flexural modulus of IPC were studied. The relationship between the fracture morphology and the material structure was analyzed. The experimental results show that the mechanical properties of the four kinds of IPC are significantly improved compared with the pure aluminum foam, of which aluminum foam - epoxy resin compression and bending mechanical properties of the best. As the volume fraction of HGM in the composite increases, the mechanical properties of IPC gradually decrease.