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Highly Uniform and Stable Transparent Electromagnetic Interference Shielding Film Based on Silver Nanowire–PEDOT:PSS Composite for High Power Microwave Shielding
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-12-18 , DOI: 10.1002/mame.202000607 Feng Qin 1, 2 , Zhiyang Yan 1, 2 , Jinfeng Fan 3 , Jinliang Cai 1, 2 , Xingzhong Zhu 4 , Xiaogang Zhang 3
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-12-18 , DOI: 10.1002/mame.202000607 Feng Qin 1, 2 , Zhiyang Yan 1, 2 , Jinfeng Fan 3 , Jinliang Cai 1, 2 , Xingzhong Zhu 4 , Xiaogang Zhang 3
Affiliation
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Electromagnetic interference (EMI) shielding materials, especially ones with excellent shielding effectiveness (SE), high optical transmittance, long‐term stability as well as high uniformity, are urgently desired to meet the requirements of many applications. Herein, an extremely transparent, stable and uniform silver nanowire (Ag NW)–poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composite film as an EMI shielding material is prepared, which possess excellent shielding capability to both small signal and high power microwaves (HPM). The composite film exhibits SE of 30.5 dB in the frequency range of 1–12 GHz (small signal) and simultaneously has an optical transmittance of 91.0%. The SE continuously increases to 41.4 dB, while the optical transmittance still maintains at 81.1%. The composite film is very uniform, and its SE is almost unchanged even when exposed in air for a year. The SE of this composite film under the excitation of HPM is also thoroughly investigated. The HPM SE is much larger than that of small signal. As the power density of HPM is increased, the SE firstly remains unchanged, then continuously increases, and finally saturates. The SE exceeds 50 dB with the excitation power density of 40 W. More interestingly, the SE is saturated at a fixed HPM power density.
中文翻译：
基于银纳米线–PEDOT：PSS复合材料的高度均匀稳定的透明电磁干扰屏蔽膜，用于大功率微波屏蔽
迫切需要电磁干扰（EMI）屏蔽材料，尤其是具有出色屏蔽效果（SE），高透光率，长期稳定性以及高均匀性的材料，以满足许多应用的需求。在此，制备了一种极透明，稳定且均匀的银纳米线（Ag NW）-聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）复合膜作为EMI屏蔽材料，具有优异的屏蔽能力。小信号微波和大功率微波（HPM）。该复合膜在1–12 GHz的频率范围内（小信号）显示出30.5 dB的SE，同时具有91.0％的透光率。SE连续增加到41.4 dB，而光透射率仍保持在81.1％。复合膜非常均匀，即使暴露于空气中一年，其SE几乎不变。还对HPM激发下该复合膜的SE进行了深入研究。HPM SE比小信号要大得多。随着HPM功率密度的增加，SE首先保持不变，然后连续增加，最后达到饱和。SE超过50 dB，激励功率密度为40W。更有趣的是，SE在固定的HPM功率密度下饱和。
更新日期：2021-02-15
中文翻译：
基于银纳米线–PEDOT：PSS复合材料的高度均匀稳定的透明电磁干扰屏蔽膜，用于大功率微波屏蔽
迫切需要电磁干扰（EMI）屏蔽材料，尤其是具有出色屏蔽效果（SE），高透光率，长期稳定性以及高均匀性的材料，以满足许多应用的需求。在此，制备了一种极透明，稳定且均匀的银纳米线（Ag NW）-聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）复合膜作为EMI屏蔽材料，具有优异的屏蔽能力。小信号微波和大功率微波（HPM）。该复合膜在1–12 GHz的频率范围内（小信号）显示出30.5 dB的SE，同时具有91.0％的透光率。SE连续增加到41.4 dB，而光透射率仍保持在81.1％。复合膜非常均匀，即使暴露于空气中一年，其SE几乎不变。还对HPM激发下该复合膜的SE进行了深入研究。HPM SE比小信号要大得多。随着HPM功率密度的增加，SE首先保持不变，然后连续增加，最后达到饱和。SE超过50 dB，激励功率密度为40W。更有趣的是，SE在固定的HPM功率密度下饱和。
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