Electromagnetic shielding materials play a significant role in solving the increasing environmental problem of electromagnetic pollutions. The commonly used metal‐based electromagnetic materials suffer from high density, poor corrosion resistance, and high processing cost. Polymer composites exhibit unique combined properties of lightweight, good shock absorption, and corrosion resistance. In this study, a novel high angle sensitive composite is fabricated by combining carbon fiber (CF) fabric with thermoplastic polyurethane elastomer (TPU). The effect of stacking angle of CF fabric on EMI shielding performance of composite is studied. When the stacking angle of CF fabric changed, the electromagnetic interference (EMI) shielding effectiveness (SE) of CF fabric/TPU composite can reach a maximum of 73 dB, and the tensile strength can reach 168 MPa. In addition, the composite has anisotropic conductivity, which is conductive along the plane direction and nonconductive along the thickness direction. Moreover, the CF fabric/TPU composite manifests exceptional EMI‐SE/density/thickness value of 383 dB cm² g⁻¹, which is higher than most of current EMI shielding composites reported in literature. In summary, CF fabric/TPU composite is an excellent EMI shielding material that is lightweight, highly flexible, and mechanically robust, which can be applied to the field of aerospace and some intelligent electronic devices.

中文翻译：

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适用于高性能EMI屏蔽应用的坚固而柔韧的碳纤维织物增强热塑性聚氨酯复合材料

电磁屏蔽材料在解决日益严重的电磁污染环境问题中发挥着重要作用。常用的金属基电磁材料具有密度高，耐腐蚀性差和加工成本高的缺点。聚合物复合材料具有独特的轻量化，良好的减震性和耐腐蚀性的综合性能。在这项研究中，通过将碳纤维（CF）织物与热塑性聚氨酯弹性体（TPU）结合在一起，制造了一种新型的高角度敏感复合材料。研究了CF织物的叠层角度对复合材料EMI屏蔽性能的影响。当CF织物的堆叠角度发生变化时，CF织物/ TPU复合材料的电磁干扰（EMI）屏蔽效能（SE）最高可达到73 dB，抗拉强度可达168 MPa。另外，该复合材料具有各向异性的导电性，其在平面方向上是导电的，而在厚度方向上是不导电的。此外，CF织物/ TPU复合材料表现出出色的EMI-SE /密度/厚度值383 dB cm² g ^-1，高于文献中报道的大多数当前EMI屏蔽复合材料。综上所述，CF织物/ TPU复合材料是一种出色的EMI屏蔽材料，重量轻，高度柔性且机械坚固，可应用于航空航天和某些智能电子设备领域。