自修复纳米复合导电薄膜的快速印刷制备及性能  

Rapid-printing of self-healing polymer nanocomposite films preparation and properties

作　　者：周成林 夏圆圆 秦海利 ZHOU Chenglin;XIA Yuanyuan;QIN Haili(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230009

出　　处：《弹性体》2021年第4期9-17,共9页China Elastomerics

基　　金：国家自然科学基金资助项目(21503063)。

摘　　要：以可溶解性聚合物为前驱体,实现一种快速印刷制膜工艺的设计。利用含有甲巯基的引发剂在紫外光下引发反应单体原位自由基聚合制备聚甲基丙烯酸甲酯(PMMA)。将聚合物PMMA置于含有银纳米线的导电墨水中进行可控印刷,可快速批量制备出导电型聚合物纳米复合薄膜。探讨了薄膜内银纳米线对薄膜导电性能、机械性能及光学性能的影响。结果表明,基于一维导电银纳米线的有效复合,纳米复合柔性薄膜不仅表现出良好的导电性能和透光性,协同薄膜内部网络结构中银-硫配位键,实现了薄膜机械性能的大幅度提升和优异的自愈合性能;利用上述印刷工艺可有效实现自修复纳米复合导电薄膜的快速制备。A rapid printable film-making process was established on the basis of a special polymer with intrinsic solubility in the presence of organic solvent.Photo-initiator with the group of methylthio could initiate with monomers for the formation of Polymethyl methacrylate(PMMA)through an in-situ polymerization approach under UV irradiation.The conductive nanocomposite film can be rapidly printed with the above polymer as the precursor through a simple and rapid slipping method with the help of conductive ink composed of silver nanowires.We have systematically investigated the relationship between the content of silver nanowires and relevant performance including electrical conductivity,mechanical properties and transparency of the polymer nanocomposite films.The employment of conductive silver nanowires enabled the achieved films with excellent electrical conductivity as well as transparency.Furthermore,the presence of silver-thiolate coordination inside the film network motivated the prepared films with enhanced mechanical property and outstanding self-healing behavior.Thus,the above-proposed strategy can effectively realize the rapid preparation of transparent,tough,self-healing,conductive nanocomposite films.

关 键 词：纳米复合薄膜 导电性 自修复 印刷制备 

分 类 号：TS102.54[轻工技术与工程—纺织工程]