With the rapid development of the flexible electronics industry, the range of multifunctional applications of materials has become extensive. But it is still a challenge to apply flexible materials to different fields while ensuring corresponding performance. Herein, a simple and available approach is addressed to fabricate conductive polymer composite films supported on Ag flakes and waterborne polyurethane (WPU) by spraying. The WPU/Ag films with uniform structure show outstanding flexibility and electromagnetic interference shielding effectiveness of 68.9 dB with thickness of only 50 μm, and could sustain a high standard even undergoing excessive mechanical deformations. Besides, the resulted films possess prominent electro-thermal effect, which can achieve a temperature of over 120 °C by applying a low voltage of 2 V, and the heat can be dissipated rapidly along with the connecting Ag network. Moreover, it shows a high gauge factor (229.2), good durability and reproductivity (over 1000 cycles), and rapid response time to strain (50 ms), which can be potentially used in the field of human movement monitoring and wearable electronic devices. These results indicate the multifunction of the WPU/Ag film, which could widen its practical applications after the corresponding treatment.

随着柔性电子工业的迅速发展，材料的多功能应用范围变得越来越广泛。但是在确保相应性能的同时将柔性材料应用于不同领域仍然是一个挑战。本文中，提出了一种简单且可用的方法，以通过喷涂来制造负载在Ag薄片和水性聚氨酯（WPU）上的导电聚合物复合膜。具有均匀结构的WPU / Ag膜具有出色的柔韧性和68.9 dB的电磁干扰屏蔽效果，厚度仅为50μm，即使经受过度的机械变形也可以维持高标准。此外，制得的薄膜具有显着的电热效应，通过施加2 V的低压可达到120°C以上的温度，并且热量可以随着连接的Ag网络迅速消散。此外，它显示出较高的规格系数（229.2），良好的耐久性和生殖性（超过1000个循环）以及对应变的快速响应时间（50毫秒），可潜在地用于人体运动监测和可穿戴电子设备领域。这些结果表明，WPU / Ag薄膜具有多功能性，经过相应的处理后可以扩大其实际应用范围。