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制备了一种空心玻璃微珠质量比、四种玻璃纤维质量比的空心玻璃微珠及玻璃纤维混合填充环氧树脂复合泡沫材料。通过一系列准静态压缩、拉伸实验,研究了玻璃纤维填充量对复合材料的密度、强度、弹性模量等性能的影响,并分析了其影响原因。通过三点弯曲实验,研究了复合材料弯曲弹性模量、弯曲强度等力学性能与玻璃纤维填充量的关系。通过拉伸断口SEM照片分析了玻璃纤维增强复合材料力学性能的原因。研究表明:随着玻璃纤维填充量增加,复合材料的拉伸和弯曲强度、压缩屈服极限及弹性模量等力学性能都有较大的提高,且仍然保持了较好的弹性性能和塑性特征。
A kind of hollow glass microbeads with mass ratio of four kinds of hollow glass microbeads with glass fiber mass ratio and glass fiber composite filled epoxy composite foam was prepared. Through a series of quasi-static compression and tensile tests, the effects of glass fiber loading on the density, strength, elastic modulus and other properties of the composites were studied and the reasons were analyzed. Through the three-point bending experiment, the relationship between the mechanical properties such as flexural modulus and flexural strength of composites and the filling amount of glass fiber was studied. The mechanical properties of glass fiber reinforced composites were analyzed by scanning electron microscopy (SEM). The results show that with the increase of glass fiber loading, the mechanical properties such as tensile strength and flexural strength, compressive yield strength and elastic modulus of the composites are greatly improved, and the elastic properties and plastic properties of the composites are still maintained.