Electromagnetic shielding fabric (ESF) is a novel electromagnetic shielding product with portability, flexibility, and good mechanical properties. However, the existing ESFs suffer from poor washing fastness of coating and poor comfort performance in terms of hand-feel characteristic. In this study, a core layer-coated yarn (CLCY) was successfully spun using a carboxylic acid-functionalized multi-walled carbon nanotube/polypyrrole/Fe3O4 composite suspension with polyvinyl butyral as an adhesive agent. To better explore the properties, the original fabric and treated fabrics, viz., core layer-coated fabric (CLCF) and surface layer-coated fabric (SLCF), were characterized by several methods. Scanning electron microscopic observations revealed that the coating was on the core layer in CLCF. In addition, the Fourier-transform infrared spectroscopy and X-ray diffraction spectroscopy results revealed that the composition of the coating corresponds with that in the multi-composite suspension. Moreover, the coating of CLCY formed a conductive path with good conductivity in the core layer, but the conductivity of the coating on the surface layer of SLCF deteriorated sharply after washing. Further, compared with the original fabric and SLCF, CLCF has highest breaking strength (after 10 washes), and keeps a relatively good hand-feel characteristic. Finally, the evaluated electromagnetic interference shielding characteristics reveal that the fastness of coating affects the electromagnetic shielding effectiveness, suggesting that the wrapped protection of outside staple fibers in CLCF reduce the loss of coating in the core layer during washing. However, the coating on the surface layer in SLCF could be washed away easily.

中文翻译：

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具有优异手感特性的芯层涂层织物的电磁干扰屏蔽特性

电磁屏蔽织物（ESF）是一种新型的电磁屏蔽产品，具有便携性、柔韧性和良好的机械性能。然而，现有的ESFs涂层耐洗牢度差，手感特性舒适度差。在本研究中，以聚乙烯醇缩丁醛为粘合剂，使用羧酸功能化的多壁碳纳米管/聚吡咯/Fe3O4 复合悬浮液成功纺制了包芯纱（CLCY）。为了更好地探索性能，原始织物和处理过的织物，即芯层涂层织物 (CLCF) 和表层涂层织物 (SLCF)，通过多种方法进行表征。扫描电子显微镜观察表明涂层在 CLCF 的核心层上。此外，傅里叶变换红外光谱和 X 射线衍射光谱结果表明涂层的组成与复合悬浮液中的组成一致。此外，CLCY涂层在核心层形成了导电性良好的导电通路，但SLCF表层涂层的导电性在洗涤后急剧下降。此外，与原织物和SLCF相比，CLCF具有最高的断裂强度（10次洗涤后），并保持较好的手感特性。最后，评估的电磁干扰屏蔽特性表明涂层的牢度会影响电磁屏蔽效果，表明CLCF中外部短纤维的包裹保护减少了洗涤过程中芯层涂层的损失。然而，