环氧树脂/玻璃微珠轻质复合材料力学性能预报

随着航天工程及海洋探测等高科技产业的快速发展,对新型结构材料的性能有了更高的要求.采用空心玻璃微珠对环氧树脂进行改性制得复合材料,并对材料进行密度以及压缩性能的测试.同时,利用有限元软件对复合材料的压缩强度进行预报.结果表明:随着空心玻璃微珠体积分数的增加,复合材料的密度在减小,孔隙率在升高,材料的强度和模量均下降,内...

Prediction of mechanical Properties of epoxy/glass microsphere lightweight Composites

With the rapid development of high-tech industries such as aerospace and ocean exploration,higher requirements were put forward for the performance of new structural materials.The composite material is prepared by modifying the epoxy resin with hollow glass microsphere,and their density and compression properties were tested.At the same time,the finite element method was used to predict the strength of the composite.The results showed that with the increase of the volume fraction of hollow glass microsphere,the density of the composite decreased,the porosity increased,the strength and modulus of the composite decreased.Investigation indicated the internal stress distribution is uneven and there is stress concentration.When the content of hollow glass microsphere was low(≤45%),the destruction of the material was mainly the shear failure of the resin matrix.On the contrary,when the content of hollow glass microsphere was high(≥50%),the damage of material was mainly caused by the composite damage of resin matrix and microsphere.