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Robustly Superhydrophobic Conductive Textile for Efficient Electromagnetic Interference Shielding
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posted on 2018-12-06, 00:00 authored by Li-Chuan Jia, Guoqiang Zhang, Ling Xu, Wen-Jin Sun, Gan-Ji Zhong, Jun Lei, Ding-Xiang Yan, Zhong-Ming LiSuperhydrophobic
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°), low sliding angle (2.9°),
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.
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superhydrophobic featuresuperhydrophobic EMISTsuperhydrophobic EMISTsEfficient Electromagnetic Interference Shielding Superhydrophobic electromagnetic interferenceEMIST exhibitsRobustly Superhydrophobic Conductive Textilefluoroacrylic polymercarbon nanotubes60 minsuperhydrophobic coatingsilver nanowirepolytetrafluoroethylene nanoparticlesshielding textile100 cycles5000 stretching-releasing cycleschemical durabilityservice conditions