Robustly Superhydrophobic Conductive Textile for Efficient Electromagnetic Interference Shielding
Robustly Superhydrophobic Conductive Textile for Efficient Electromagnetic Interference Shielding
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DOI：
10.1021/acsami.8b18459
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发表时间：
2019-01-09
影响因子：
9.5
通讯作者：
Li, Zhong-Ming
中科院分区：
文献类型：
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作者：
Jia, Li-Chuan;Zhang, Guoqiang;Li, Zhong-Ming
超疏水电磁干扰(EMI)屏蔽纺织品(EMIST)对全天候户外设备的安全和长期使用具有重要意义。然而，在外部机械变形或其他恶劣使用条件下，实现长期耐久性和稳定性仍然是具有挑战性的。在这里，通过设计和实现银纳米线(AgNW)网络和在商业纺织品上的超疏水涂层，我们展示了一种高度健壮的超疏水EMIST。合成的电磁干扰测试仪显示出高水接触角(160.8度)、低滑动角(2.9度)和卓越的电磁干扰屏蔽效能(51.5dB)的协同效应。值得注意的是，即使在5000次拉伸释放循环后，EMIST仍保持其超疏水特性和高EMI屏蔽水平(42.6dB)。此外，EMIST还表现出强大的抗超声波处理能力，最长可达60分钟，剥离试验长达100次，强酸性/碱性溶液和不同的有机溶剂，表明其卓越的机械稳定性和化学耐久性。EMIST的这些吸引人的特征主要是由于AgNW、碳纳米管、聚四氟乙烯纳米颗粒和氟丙烯酸聚合物的共同作用。这项工作为未来耐用、超疏水的EMIST的设计提供了一种有希望的方法，这种EMIST能够在长期暴露于极端条件下保持完全功能，例如潮湿和腐蚀性环境。
Superhydrophobic electromagnetic interference (EMI) shielding textile (EMIST) is of great significance to the safety and long-term service of all-weather outdoor equipment. However, it is still challenging to achieve long-term durability and stability under external mechanical deformations or other harsh service conditions. Herein, by designing and implementing silver nanowire (AgNW) networks and a superhydrophobic coating onto a commercial textile, we demonstrate a highly robust superhydrophobic EMIST. The resultant EMIST shows a synergy of high water contact angle (160.8 degrees), low sliding angle (2.9 degrees), and superior EMI shielding effectiveness (51.5 dB). Remarkably, the EMIST still maintains its superhydrophobic feature and high EMI shielding level (42.6 dB) even after 5000 stretching releasing cycles. Moreover, the EMIST exhibits strong resistance to ultrasonic treatment up to 60 min, peeling test up to 100 cycles, strong acidic/alkaline solutions, and different organic solvents, indicating its outstanding mechanical robustness and chemical durability. These attractive features of the EMIST are mainly a result of the joint action of AgNWs, carbon nanotubes, polytetrafluoroethylene nanoparticles, and fluoroacrylic polymer. This work offers a promising approach for the design of future durable, superhydrophobic EMISTs, which are capable of remaining fully functional against long-time exposure to extreme conditions, for example, wet and corrosive environments.