空心玻璃微珠/环氧树脂复合材料简支冲击实验研究

制备了质量不同配比改性空心玻璃微珠(HGB)填充环氧树脂复合材料,对该材料标准试件进行了摆锤冲击实验,得出了不同配比材料的冲击韧度,并使用SEM观察了冲击断口的断面形貌。实验发现,玻璃微珠含量为2%的复合材料冲击韧度最小,此时材料抗冲击性能最差;而当含量超过2%,复合材料的冲击韧度会随玻璃微珠含量增加而增大;断面上玻璃微珠在基体中有拔出、断裂和破碎三种状态,以断裂破坏的玻璃微珠为主导破坏形式。以上实验发现对此类复合材料的研究和应用具有参考意义。

Experimental Impact Study of Simple-Supported Material Made of Epoxy Resin Filled with Hollow Glass Bead

Epoxy resin filled with hollow glass bead (HGB) composite material was prepared and simple-supported impact test of this kind of material were carried out to investigate impact toughness of the composite material with different contents of HGB, and impact fracture cross section morphology was observed by scanning electron microscope (SEM). Experimental results indicate that the impact toughness of the composite material reaches the minimum when HGB content is 2%, therefore its impact resistance is the worst then. Impact toughness of the composite material increases with HGB augmentation when its content is higher 2%. On the fracture cross section HGB presents following three failure modes: extraction from its matrix, cross-rupture and smash, while the cross-rupturing is the primary mode of failure. Above experimental findings may provide a reference for study and application of this kind of composite material.