In this paper, we proposed a novel method to fabricate thiol-modified reduced graphene oxide-waterborne polyurethane/cotton (M-rGO-WPU/cotton) fabric that provided a robust electromagnetic interference (EMI) shielding performance and excellent thermal conductivity. The WPU molecules with ene groups at the both ends were synthesized and acted as a polymer matrix to connect the rGO and cotton substrate with the thiols via the synchronous thiol-ene click reaction, respectively. The introduction of click reaction effectively improved the durability in its practical daily use, realizing the true meaning of all-in-one structure. The results of Raman, FTIR and XRD confirmed the preparation route and chemical compositions. The SEM images and EDS mapping illustrated that a uniform and thin M-rGO-WPU film was attached tightly on cotton fiber. The conductive interconnected network in M-rGO-WPU/cotton imparted it with excellent electrical conductivity and enhanced mechanical properties. The EMI shielding effectiveness of M-rGO-WPU/cotton reached 48.1 dB, which was superior to that of rGO-WPU/cotton with a thickness of ∼1 mm at only 2 wt% nanofillers loadings. The high electromagnetic shielding performance of M-rGO-WPU/cotton was attributed to strong dielectric loss, more interfaces for multiple reflections and scattering. Furthermore, the performance related to practical application including high capability of heat transmission, durability, flexibility and processability were also investigated and showed its great potential in advanced EMI shielding applications.

在本文中，我们提出了一种新颖的方法来制造硫醇改性的还原氧化石墨烯-水性聚氨酯/棉（M-rGO-WPU /棉）织物，该织物提供了强大的电磁干扰（EMI）屏蔽性能和出色的导热性。合成了两端带有烯基的WPU分子，并用作聚合物基质，分别通过同步硫醇-烯点击反应将rGO和棉底物与硫醇连接。点击反应的引入有效地提高了其在日常使用中的耐用性，实现了多合一结构的真正含义。拉曼光谱，红外光谱和X射线衍射结果证实了制备路线和化学组成。SEM图像和EDS映射表明，均匀且薄的M-rGO-WPU膜紧密附着在棉纤维上。M-rGO-WPU /棉中的导电互连网络为其赋予了出色的导电性和增强的机械性能。M-rGO-WPU /棉的EMI屏蔽效果达到48.1 dB，在仅占2 wt％纳米填料的情况下，其厚度约为1 mm，优于rGO-WPU /棉。M-rGO-WPU /棉的高电磁屏蔽性能归因于强大的介电损耗，更多的界面以进行多次反射和散射。此外，还研究了与实际应用相关的性能，包括高传热能力，耐用性，柔韧性和可加工性，并显示了其在高级EMI屏蔽应用中的巨大潜力。