Lightweight, Flexible, Resilient PMIA-Based Fabric with Superior Electromagnetic Shielding Performance

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2025-04-07 DOI:10.1007/s42765-025-00520-1

Jiafei Wang, Rongjun Qu, Bingjie Ren, Qianyi Wang, Fang Ma, Ying Zhang, Xinyu Li, Ying Wang, Changmei Sun, Xiquan Song, Qianli Ma, Ming Jiang, Xue Geng

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引用次数: 0

Abstract

Electromagnetic interference (EMI) is becoming commonplace with the development of modern electronics. In this work, a series of conductive polymer composite fabrics that have high EMI shielding effectiveness (SE), high mechanical strength, and resilience to adverse conditions were prepared. Crosslinked hyperbranched polyamidoamine (referred to as xHP-Q_y) was used to create a conductive Ag layer tightly bound to the underlying matrix of poly(meta-phenylene isophthalamide) (PMIA). The morphology and physicochemical properties of the starting materials, intermediates, and the final PMIA/xHP-Q_y/Ag fabrics were characterized extensively. The PMIA matrix and the Ag layer were connected by the xHP-Q_y that had a distinct antenna-shaped structure. The lowest resistivity and highest EMI SE of the fabrics were 2.37 × 10⁻³ Ω·cm and 107.66 dB, respectively. It was further verified by finite element simulation that the PMIA/xHP-Q_y/Ag had an exceptional EMI shielding performance. The fabrics maintained their superior performance despite harsh environments (high/low temperature, high humidity, strong acid/alkali, solvents, salt spray corrosion) or mechanical deformations (bending-stretching, winding-releasing, abrading). The developed strategy thus created access to resilient functional materials suitable for use in highly demanding scenarios.

Graphical Abstract

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具有优异电磁屏蔽性能的轻质、柔性、弹性pmia织物

随着现代电子技术的发展，电磁干扰日益普遍。本工作制备了一系列具有高电磁干扰屏蔽效能（SE）、高机械强度和抗恶劣条件弹性的导电聚合物复合织物。交联超支化聚酰胺（xHP-Qy）被用来创建一个导电银层紧密结合的底层基质聚（间苯异眼酰胺）（PMIA）。对原料、中间体和成品PMIA/xHP-Qy/Ag织物的形貌和理化性质进行了广泛的表征。PMIA基质与Ag层由具有明显天线状结构的xHP-Qy连接。织物的最低电阻率和最高电磁干扰SE分别为2.37 × 10−3 Ω·cm和107.66 dB。有限元仿真进一步验证了PMIA/xHP-Qy/Ag具有优异的电磁干扰屏蔽性能。尽管恶劣环境（高/低温、高湿、强酸/强碱、溶剂、盐雾腐蚀）或机械变形（弯曲-拉伸、绕线-释放、磨损），织物仍保持其优越的性能。因此，开发的策略创造了适用于高要求场景的弹性功能材料。图形抽象

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.