Near‑Instantaneously Self‑Healing Coating toward Stable and Durable Electromagnetic Interference Shielding

作     者：Lihua Zou Chuntao Lan Songlin Zhang Xianhong Zheng Zhenzhen Xu Changlong Li Li Yang Fangtao Ruan Swee Ching Tan Lihua Zou;Chuntao Lan;Songlin Zhang;Xianhong Zheng;Zhenzhen Xu;Changlong Li;Li Yang;Fangtao Ruan;Swee Ching Tan

作者机构：Anhui Province International Cooperation Research Center of Textile Structure Composite MaterialsAnhui Polytechnic UniversityAnhui 241000WuhuPeople’s Republic of China Department of Materials Science and EngineeringNational University of Singapore9 Engineering Drive 1Singapore 117575Singapore Key Laboratory of Eco‑TextilesMinistry of EducationJiangnan UniversityWuxi 214122JiangsuPeople’s Republic of China Department of Mechanical EngineeringUniversity of DelawareNewarkDE 19716USA 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2021年第13卷第11期

页      面：452-467页

核心收录：

学科分类：0821[工学-纺织科学与工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 082103[工学-纺织化学与染整工程] 0702[理学-物理学] 

基　　金：L.Z.and C.L.contributed equally to this work.This work was supported by the Natural Science Foundation of China(No.51903001) Anhui Province International Science and Technology Cooperation Program(No.1804b06020360) Anhui Province International Cooperation Research Center of Textile Structure Composites(No.2021ACTC07) Research Funds of Anhui Polytechnic University(No.Xjky2020041) S.C.T.acknowledges the financial support from MOE AcRF2(R-284-000-217-112). 

主　　题：Electromagnetic interference shielding Superhydrophobic coating Multifunctional textiles Self-healing Conductive polymer 

摘      要：Durable electromagnetic interference(EMI)shielding is highly desired,as electromagnetic pollution is a great concern for electronics’stable performance and human health.Although a superhydrophobic surface can extend the service lifespan of EMI shielding materials,degradation of its protection capability and insufficient self-healing are troublesome issues due to unavoidable physical/chemical damages under long-term application conditions.Here,we report,for the first time,an instantaneously self-healing approach via microwave heating to achieve durable shielding performance.First,a hydrophobic 1H,1H,2H,2H-perfluorooctyltriethoxysilane(POTS)layer was coated on a polypyrrole(PPy)-modified fabric(PPy@POTS),enabling protection against the invasion of water,salt solution,and corrosive acidic and basic solutions.Moreover,after being damaged,the POTS layer can,for the first time,be instantaneously self-healed via microwave heating for a very short time,i.e.,4 s,benefiting from the intense thermal energy generated by PPy under electromagnetic wave radiation.This self-healing ability is also repeatable even after intentionally severe plasma etching,which highlights the great potential to achieve robust and durable EMI shielding applications.Significantly,this approach can be extended to other EMI shielding materials where heat is a triggering stimulus for healing thin protection layers.We envision that this work could provide insights into fabricating EMI shielding materials with durable performance for portable and wearable devices,as well as for human health care.