空心玻璃微珠填充环氧树脂复合材料力学性能

对不同填充质量比的改性空心玻璃微珠(HGB)/环氧树脂复合材料进行了拉伸、压缩准静态实验。研究了改性空心玻璃微珠不同填充量对复合材料密度、弹性模量、拉伸强度和压缩强度的影响, 并分析其应力松弛。实验发现, 材料的各项数据随填充比增加均有所降低。空心玻璃微珠的填入使材料表现出脆性破坏, 但破坏前有较大的变形, 破坏后回弹率大, 说明玻璃微珠的填充增强了材料的弹性。HGB/环氧树脂复合材料具有明显的应力松弛现象, 且填充比越高, 应力松弛速率越大, 可见HGB/环氧树脂复合材料具有明显的黏弹性。 

Mechanical properties of epoxy resin filled with hollow glass bead

The quasi-static compressive and tensile experiments of hollow glass beads(HGB)/epoxy were studied. The effects of different HGB mass ratios on the density, modulus and strength of HGB/epoxy were discussed, and its stress relaxation was analyzed. It is found that its various data are decreased with the increasing of  the HGB mass ratio, and the composite has the image of brittle failure, but there is a great deformation before failure, and a great spring back after failure. It shows that the elasticity of the composite is enhanced. The HGB/epoxy composite has obvious stress relaxation, and the relaxation velocity is increased with the increment of HGB mass ratio. It shows that this HGB/epoxy composite has obvious viscoelasticity.