Two-dimensional (2D) graphene-like nanomaterials have gained interest in anticorrosion coatings due to their enable to act as physical barriers to aggressive species, yet 2D coatings are not always effective or sustainable. Inspired by the epidermis microstructure, herein we designed a high-performance anticorrosion coating with rapid self-healing ability via integrating the excellent adhesion property of polydopamine (PDA) and superior barrier properties of natural mica nanosheets (MNSs) for the first time. Such the coating comprises a protective hard top layer with MNSs constituents (“sealing” agents) and a bottom hybrid soft polymer multilayer, forming a stratified epidermis microstructure, can realize a complete restoration of coating defects under water owing to their mutual benefit. These MNSs not only can enhance the barrier performance of the coating matrix to retard the diffusion of aggressive species and hamper polymer release into water, but also induce an anisotropic diffusion to promote the self-healing of the polymer chains. The microstructures of the bioinspired coatings were systemically investigated by scanning electron microscopy (SEM) and optical microscopy (OM) measurements. Electrochemical results confirmed the anticorrosion performance of the coatings were significantly improved. This work provides a new insight for the design and fabrication of 2D nanomaterials reinforced high-performance and smart anticorrosion coatings.

二维（2D）类石墨烯纳米材料由于其能够作为侵蚀性物种的物理屏障而引起人们对防腐涂层的兴趣，但是2D涂层并不总是有效或可持续的。受表皮微观结构的启发，我们首次结合了聚多巴胺（PDA）的优异粘附性能和天然云母纳米片（MNSs）的优异阻隔性能，设计了一种具有快速自修复能力的高性能防腐涂料。这种涂层包括具有MNSs成分的保护性硬顶层（“密封剂”）和底部杂化的软聚合物多层膜，形成分层的表皮微观结构，由于它们的互惠互利，可以在水下完全修复涂层缺陷。这些MNS不仅可以增强涂料基质的阻隔性能，以阻止侵蚀性物质的扩散并阻碍聚合物向水中的释放，而且还可以诱导各向异性扩散，从而促进聚合物链的自愈。通过扫描电子显微镜（SEM）和光学显微镜（OM）测量，系统地研究了生物启发涂层的微观结构。电化学结果证实了涂层的防腐性能得到明显改善。这项工作为二维纳米材料增强高性能和智能防腐涂料的设计和制造提供了新的见识。而且还引起各向异性扩散，以促进聚合物链的自愈。通过扫描电子显微镜（SEM）和光学显微镜（OM）测量，系统地研究了生物启发涂层的微观结构。电化学结果证实了涂层的防腐性能得到明显改善。这项工作为二维纳米材料增强高性能和智能防腐涂料的设计和制造提供了新的见识。而且还引起各向异性扩散，以促进聚合物链的自愈。通过扫描电子显微镜（SEM）和光学显微镜（OM）测量，系统地研究了生物启发涂层的微观结构。电化学结果证实了涂层的防腐性能得到明显改善。这项工作为二维纳米材料增强高性能和智能防腐涂料的设计和制造提供了新的见识。