There is an urgent need for multifunctional and wearable smart devices to address the growing environmental impact on the human body, especially for pregnant women. However, it is big challenge to explore fabric combined multi-functions, such as EMI shielding, electrical therapy and biomotion detection while maintaining their intrinsic durability and washability. Here, we have employed an efficient coaxial electrospinning technique, followed by Ag precursor reduction and polydimethylsiloxane spraying to fabricate a multifunctional film which contains core–shell fibers with polyurethane/carbon nanotube (CNT) as core and polyurethane/Fe3O4 as shell. The CNT and the Ag nanoparticles (AgNPs) form double conductive network for EMI shielding, electrical heating and biological motion detection. The Fe3O4 provides magnetic loss and helps the fibers to provide rich attachment sites for AgNPs. The obtained film has an excellent combination of high EMI SE (110.0 dB in X-band), large Joule heating (up to 230 °C at 3 V), good sensing performance and large sensing range of 230 % strain. In addition, it showed an extremely superior durability and stability in complex conditions, good breathability and wash stability, ensuring the comfort wearing. This study offers an outstanding paradigm to construct next generation intelligent fabric combined versatility, stability and wearing comfort for protection of pregnant women and military solider.

中文翻译：

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可洗、稳定的同轴静电纺丝织物，具有卓越的电磁干扰屏蔽性能，适用于多功能电子产品


迫切需要多功能和可穿戴智能设备来解决环境对人体（尤其是孕妇）日益增长的影响。然而，探索织物结合多种功能，如 EMI 屏蔽、电疗和生物运动检测，同时保持其固有的耐用性和可洗性，是一个巨大的挑战。在这里，我们采用了高效的同轴静电纺丝技术，然后通过银前驱体还原和聚二甲基硅氧烷喷涂来制备多功能薄膜，该薄膜包含以聚氨酯/碳纳米管（CNT）为核、聚氨酯/Fe3O4为壳的核壳纤维。 CNT 和 Ag 纳米粒子 (AgNP) 形成双导电网络，用于 EMI 屏蔽、电加热和生物运动检测。 Fe3O4 提供磁损耗并帮助纤维为 AgNP 提供丰富的附着位点。所获得的薄膜具有高 EMI SE（X 波段 110.0 dB）、大焦耳热（3 V 时高达 230 °C）、良好的传感性能和 230 % 应变的大传感范围的优异组合。此外，它在复杂条件下表现出极其优越的耐用性和稳定性，良好的透气性和洗涤稳定性，保证了穿着的舒适性。这项研究为构建下一代智能织物提供了一个杰出的范例，该织物结合了多功能性、稳定性和穿着舒适性，以保护孕妇和军人。