用于电磁干扰屏蔽的轻质柔性聚磺酰胺/聚氨酯-CNTs@银纤维纸

IF 8.6 2区 工程技术 Q1 ENERGY & FUELS
Junyi Wang , Shuo Zhang , Runzheng Liu , Yin Zhang , Xiaowei Huang , Xin Ning , Guanxian Dou , Jinfa Ming
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引用次数: 0

摘要

如今,电磁波辐射是环境污染的来源之一,严重影响人类健康和环境。由高性能纤维制成的纤维纸由于能适应不同的复杂工作环境,在电磁干扰(EMI)屏蔽方面显示出巨大的应用潜力。然而,实现轻质、高效和灵活的电磁屏蔽仍然具有挑战性。针对这一问题,我们通过真空辅助过滤和热处理,设计出一种具有双层结构和高电磁屏蔽效率(EMI SE)的轻质聚磺酰胺/聚氨酯-CNTs@Ag(PSA/PU-CNTs@Ag)纤维纸。结果表明,PSA/PU-CNTs@Ag 纤维纸中的 Ag 纳米粒子含量为 0.3 g 时,电阻小于 1 Ω,导电率达到 883.57 S/m。同时,随着银膜厚度的增加,EMI SE 值达到 90.537 dB。经过一千次折叠后,PSA/PU-CNTs@Ag 纤维纸的 EMI SE 值有所下降,但仍保持了原有屏蔽性能的 95%。此外,其 EMI SE 值在各种极端环境(热 150 °C、冷 -70 °C)下仍能保持在 60 dB 以上。总之,这项工作表明基于 PSA 的 EMI 屏蔽材料具有优异的综合性能,并能在不同的极端工作环境中保持稳定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Lightweight and flexible polysulfonamide/polyurethane-CNTs@Ag fiber paper for electromagnetic interference shielding

Lightweight and flexible polysulfonamide/polyurethane-CNTs@Ag fiber paper for electromagnetic interference shielding

Nowadays, electromagnetic wave radiation is one of the sources of environmental pollution, which seriously affects human health and and the environment. Fiber paper made from high-performance fibers has shown potential for use in the electromagnetic interference (EMI) shielding due to adapting different complex working environments. However, achieving lightweight, high-efficiency, and flexible electromagnetic shielding remains challenging. To address this issue, we design a lightweight polysulfonamide/polyurethane-CNTs@Ag (PSA/PU-CNTs@Ag) fiber paper with double-layered structure and high electromagnetic shielding efficiency (EMI SE) via vacuum-assisted filtration and heat treatment. The results show the content of Ag nanoparticles 0.3 g in PSA/PU-CNTs@Ag fiber paper, the resistance is less than 1 Ω, the electrical conductivity reaches 883.57 S/m. At the same time, the thickness of Ag film increases, the EMI SE value reaches 90.537 dB. The EMI SE value of PSA/PU-CNTs@Ag fiber paper after folding one thousand times has decreased, but still maintains 95% of the original shielding performance. Moreover, its EMI SE values still maintain above 60 dB in various extreme environments (hot 150 °C, cold −70 °C). In summary, this work shows PSA based EMI shielding materials own excellent overall performance and hold broad different working extreme environments.

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来源期刊
Sustainable Materials and Technologies
Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment
CiteScore
13.40
自引率
4.20%
发文量
158
审稿时长
45 days
期刊介绍: Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.
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