Manufacturing a flexible, light, large-area, and high-efficiency electromagnetic shielding materials in a straightforward and cost-effective manner presently remains a significant challenge. In this work, we propose a conductive network design and verify its electromagnetic interference (EMI) shielding effectiveness (SE) by simulation. Using the structure and parameters obtained by simulation, we prepare a flexible EMI shielding material using silver nanowires (AgNWs)/polyvinyl butyral (PVB) ethanol solution and textile substructure via a facile immersing method. In the frequency range of 5–18 GHz, the AgNWs/PVB textile with 1.4 mm thickness achieves an EMI SE of 59 dB, which exceeds the requirements for commercial applications. Due to the low density of 56 mg/cm³, specific shielding effectiveness (SSE) of this material reaches 1053 dB m³/g. It is found that the AgNWs/PVB textile is more resistant to washing with water and oxidation than AgNWs textile without a PVB protector. As a result, the conductivity of AgNWs/PVB textile exhibits no change after washing with water and varies slightly after being kept in hot air. We find that a signal monitor is unable to detect a signal emitted by a mobile phone from a jacket lined with AgNWs/PVB textile. AgNWs/PVB textile with these properties can be mass-produced as high-efficiency EMI shielding material for commercial applications.

当前，以直接且成本有效的方式制造柔性，轻便，大面积且高效的电磁屏蔽材料仍然是一项重大挑战。在这项工作中，我们提出了一种导电网络设计，并通过仿真验证了其电磁干扰（EMI）屏蔽效果（SE）。使用通过仿真获得的结构和参数，我们使用银纳米线（AgNWs）/聚乙烯醇缩丁醛（PVB）乙醇溶液和纺织品子结构通过一种容易的浸没方法制备了一种柔性EMI屏蔽材料。在5–18 GHz的频率范围内，厚度为1.4 mm的AgNWs / PVB纺织品的EMI SE为59 dB，超过了商业应用的要求。由于密度低至56 mg / cm ³，该材料的比屏蔽效率（SSE）达到1053 dB m ³ / g。发现AgNWs / PVB纺织品比没有PVB保护剂的AgNWs纺织品更耐水洗和抗氧化。结果，AgNWs / PVB织物的电导率在用水洗涤后没有变化，而在热空气中保持不变。我们发现，信号监视器无法检测到手机发出的信号，该信号来自衬有AgNWs / PVB织物的夹克。具有这些特性的AgNWs / PVB纺织品可以大量生产，作为用于商业应用的高效EMI屏蔽材料。