Delicate microstructure design and suitable matrixes are vital for attaining advanced electromagnetic interference (EMI) shielding materials with lightweight, flexible, durable, processible features. By mimicking natural leather, a three-dimensional (3D) hierarchical porous scaffold integrated with silver nanowires (AgNWs) and anti-abrasion polyurethane (PU) was constructed via a facile dip-coating method at ambient temperature. The interconnected micrometer-sized voids and unique hierarchical structure of this composite benefit uniform AgNWs anchored and the superior shielding performance by significantly enhancing the absorption loss of electromagnetic waves (98.5%). Intriguingly, the leather-like composite possesses the best EMI shielding effectiveness (~110 dB, 8.2–12.4 GHz) compared with reported natural leather-based shielding materials to date. Furthermore, the 3D PU network provides strong adhesion strength and mechanical properties, allowing the stable and durable EMI shielding performance of such composite to resist ultrasonic washing, strong acid, strong base, tape-peeling, bending, and abrasion.

精细的微结构设计和合适的基体对于获得具有轻质、灵活、耐用、可加工特性的先进电磁干扰 (EMI) 屏蔽材料至关重要。通过模仿天然皮革，构建了与银纳米线 (AgNWs) 和耐磨聚氨酯 (PU) 集成的三维 (3D) 分层多孔支架。一种在环境温度下简便的浸涂方法。这种复合材料的互连微米级空隙和独特的分层结构通过显着提高电磁波的吸收损耗 (98.5%) 有利于均匀固定的 AgNW 和卓越的屏蔽性能。有趣的是，与迄今为止报道的基于天然皮革的屏蔽材料相比，这种皮革状复合材料具有最佳的 EMI 屏蔽效果（~110 dB，8.2-12.4 GHz）。此外，3D PU网络提供了强大的粘合强度和机械性能，使这种复合材料具有稳定耐用的EMI屏蔽性能，可以抵抗超声波洗涤、强酸、强碱、胶带剥离、弯曲和磨损。