纳微快报（英文）2021，Vol.13Issue(11)：452-467,16.
Near-Instantaneously Self-Healing Coating toward Stable and Durable Electromagnetic Interference Shielding
Near?Instantaneously Self?Healing Coating toward Stable and Durable Electromagnetic Interference Shielding
摘要
Abstract
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 PPyunder electromagnetic wave radiation. This self-healing ability is also repeatable even after intentionally severe plasma etching, which high-lights 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.关键词
Electromagnetic interference shielding/Superhydrophobic coating/Multifunctional textiles/Self-healing/Conductive polymerKey words
Electromagnetic interference shielding/Superhydrophobic coating/Multifunctional textiles/Self-healing/Conductive polymer引用本文复制引用
Lihua Zou,Chuntao Lan,Songlin Zhang,Xianhong Zheng,Zhenzhen Xu,Changlong Li,Li Yang,Fangtao Ruan,Swee Ching Tan..Near-Instantaneously Self-Healing Coating toward Stable and Durable Electromagnetic Interference Shielding[J].纳微快报（英文）,2021,13(11):452-467,16.基金项目
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),and Research Funds of Anhui Polytechnic University(No.Xjky2020041).S.C.T.acknowledges the financial support from MOE AcRF2(R-284-000-217-112). （No.51903001）
