材料科学
电磁屏蔽
复合材料
热塑性聚氨酯
三元运算
电磁干扰
电磁干扰
聚氨酯
复合数
纳米线
石墨烯
纳米复合材料
光电子学
纳米技术
电子工程
计算机科学
弹性体
工程类
程序设计语言
作者
Chengbao Wang,Yabin Guo,Jianwen Chen,Yutian Zhu
标识
DOI:10.1016/j.coco.2022.101444
摘要
Flexible and transparent electromagnetic interference (EMI) shielding films are desired in various fields. Herein, we propose a simple but effective approach to fabricate the flexible, transparent, and high EMI shielding films based on Ag nanowires (AgNWs)/ionic liquids (ILs)/thermoplastic polyurethane (TPU) ternary composites. Attributed to the formation of the low-density but highly interconnected AgNW network as well as the synergistic effect of AgNWs and ILs on composite conductivity, the as-prepared AgNWs/ILs/TPU film has a transmittance of 67% and an EMI shielding effectiveness of ∼26.8 dB at 10 GHz. Because of the low areal density of AgNWs, the absolute shielding effectiveness (SSE/t) of AgNWs/ILs/TPU film even reaches to 1.32 × 106 dB cm2 g−1 at 10 GHz, which is superior to most reported works. More interestingly, the as-prepared film also exhibits good durability and stability in the EMI shielding properties even after 1000 uninterrupted bending cycles or long-term soaking in acidic or alkali solution. These outstanding performances endow the as-prepared film with great potential in flexible and transparent EMI shielding scenarios.
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