剪切增稠凝胶(STG)是近年来引起人们极大研究兴趣的一种剪切增稠材料,表现出冲击硬化效应。将STG与环氧树脂材料进行复合,获得一种强度更高的STG增强环氧树脂材料,一方面解决剪切增稠材料在实际过程中的冷流问题,另一方面通过高分子聚合物与剪切增稠凝胶材料的耦合作用,进一步改善环氧树脂的脆性以抗冲击防护性能。采用热分析表征样品的热稳定性;采用电子万能材料试验机对复合材料进行了多重拉伸速率的拉伸力学性能测试;采用扫描电子显微镜对材料进行微观结构观察。
Shear thickening gel (STG) is a kind of shear thickening material that has attracted great research interest in recent years,showing impact hardening effect.STG and epoxy resin materials were compounded to obtain a higher strength STG reinforced epoxy resin material,which on the one hand solved the cold flow problem of shear thickening materials in the actual process,and on the other hand,further improved the brittleness of epoxy resin and impact protection performance through the coupling effect of polymer and shear thickening gel material.Thermal analysis was used to characterize the thermal stability of samples.The tensile mechanical properties of the composite materials with multiple tensile rates were tested by electronic universal material testing machine.The microstructure observation of the materials was performed by scanning electron microscopy.
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基金资助
国家自然科学基金青年基金项目(51803197);化工材料研究所学科基金项目(SXK-2021-06)
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