Investigating the Self-Healing of Dynamic Covalent Thermoset Polyimine and Its Nanocomposites
Investigating the Self-Healing of Dynamic Covalent Thermoset Polyimine and Its Nanocomposites
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DOI：
10.1115/1.4044088
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发表时间：
2019-07
期刊：
影响因子：
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通讯作者：
Chuanqian Shi;Zhanan Zou;Zepeng Lei;Xingli Wu;Zhengwei Liu;Haiqing Lu;Wei Zhang;Jianliang Xiao
中科院分区：
文献类型：
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作者：
Chuanqian Shi;Zhanan Zou;Zepeng Lei;Xingli Wu;Zhengwei Liu;Haiqing Lu;Wei Zhang;Jianliang Xiao
可自愈和可回收的材料和电子产品可以提高可靠性和可维修性，减少环境污染，因此具有非常广泛的应用前景。本研究以动态共价化学为基础，研究了动态共价热固性聚亚胺及其纳米复合材料的自愈合性能。对聚亚胺及其纳米复合材料的两层膜进行了热压自愈实验。研究了热压时间、温度和载荷对复层膜界面剪切强度的影响。结果表明，增加热压时间、温度和载荷可以显著提高界面剪切强度，从而达到自愈效果。对于聚亚胺纳米复合材料，增加热压时间、温度和载荷可以提高复层膜的导电性。
Self-healable and recyclable materials and electronics can improve the reliability and repairability and can reduce environmental pollution; therefore, they promise very broad applications. In this study, we investigated the self-healing performance of dynamic covalent thermoset polyimine and its nanocomposites based on the dynamic covalent chemistry. Heat press was applied to two laminating films of polyimine and its nanocomposites to induce self-healing. The effects of heat press time, temperature, and load on the interfacial shear strength of the rehealed films were investigated. The results showed that increasing the heat press time, temperature, and load can significantly improve the interfacial shear strength and thus the self-healing effect. For polyimine nanocomposites, increasing the heat press time, temperature, and load led to the improved electrical conductivity of the rehealed films.