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<p>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 <i>x</i>HP-Q<sub><i>y</i></sub>) was used to create a conductive Ag layer tightly bound to the underlying matrix of poly(<i>meta</i>-phenylene isophthalamide) (PMIA). The morphology and physicochemical properties of the starting materials, intermediates, and the final PMIA/<i>x</i>HP-Q<sub><i>y</i></sub>/Ag fabrics were characterized extensively. The PMIA matrix and the Ag layer were connected by the <i>x</i>HP-Q<sub><i>y</i></sub> that had a distinct antenna-shaped structure. The lowest resistivity and highest EMI SE of the fabrics were 2.37 × 10<sup>−3</sup> Ω·cm and 107.66 dB, respectively. It was further verified by finite element simulation that the PMIA/<i>x</i>HP-Q<sub><i>y</i></sub>/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.</p> Graphical Abstract <p></p>

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

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • 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

摘要

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-Qy) 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-Qy/Ag fabrics were characterized extensively. The PMIA matrix and the Ag layer were connected by the xHP-Qy 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-Qy/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