通过聚合物模板制备快速触发电活性形状记忆石墨/银纳米线/环氧树脂复合材料。

Fabricating fast triggered electro-active shape memory graphite/silver nanowires/epoxy resin composite from polymer template.

机构信息

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China.

Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai, China.

出版信息

Sci Rep. 2017 Jul 17;7(1):5535. doi: 10.1038/s41598-017-05968-9.

DOI:10.1038/s41598-017-05968-9

PMID:28717165

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5514128/

Abstract

In recent years shape-memory polymers have been under intense investigation due to their unique mechanical, thermal, and electrical properties that could potentially make them extremely valuable in numerous engineering applications. In this manuscript, we report a polymer-template-assisted assembly manufacturing strategy used to fabricate graphite/silver nanowires/epoxy resin (PGSE) composite. In the proposed method, the porous polymer foams work as the skeleton by forming three-dimensional graphite structure, whereas the silver nanowires act as the continuous conductive network. Preliminary testing on hybrid foams after vacuum infusion showed high electrical conductivity and excellent thermal stability. Furthermore, the composites were found to recover their original shape within 60 seconds from the application of a 0.8 V mm electric field. Notably, the reported shape-memory polymer composites are manufactured with readily-available raw materials, they are fast to manufacture, and are shape-controlled.

摘要

近年来，由于形状记忆聚合物具有独特的机械、热和电性能，因此在众多工程应用中具有潜在的巨大价值，它们受到了强烈的关注。在本文中，我们报告了一种使用聚合物模板辅助组装制造策略来制造石墨/银纳米线/环氧树脂（PGSE）复合材料的方法。在提出的方法中，多孔聚合物泡沫通过形成三维石墨结构充当骨架，而银纳米线则充当连续的导电网络。真空灌注后对混合泡沫进行的初步测试表明，其具有高导电性和优异的热稳定性。此外，研究发现，在施加 0.8 V/mm 的电场后，复合材料在 60 秒内即可恢复其原始形状。值得注意的是，所报道的形状记忆聚合物复合材料是使用现成的原材料制造的，它们制造速度快，并且形状可控。