Superhydrophobic surface is a promising strategy for antibacterial and corrosion protection. However, the use of harmful fluorine-containing materials, poor mechano-chemical stability, the addition of fungicides and poor corrosion resistance often limit its practical application. In this paper, a high-robustness photothermal self-healing superhydrophobic coating is prepared by simply spraying a mixture of hydrophobically modified epoxy resin and two kinds of modified nanofillers (carbon nanotubes and SiO) for long-term anticorrosion and antibacterial applications. Multi-scale network and lubrication structures formed by cross-linking of modified carbon nanotubes and repeatable roughness endow coating with high robustness, so that the coating maintains superhydrophobicity even after 100 Taber abrasion cycles, 20 m sandpaper abrasion and 100 tape peeling cycles. The synergistic effect of antibacterial adhesion and photothermal bactericidal activity endows coating with excellent antibacterial efficiency, which against () and () separately reaches 99.6% and 99.8%. Moreover, the influence of modified epoxy resin, superhydrophobicity, organic coating and coating thicknesses on the anticorrosion of magnesium (Mg) alloy is systematically studied and analyzed. More importantly, the prepared coating still exhibits excellent self-cleaning, anticorrosion and antibacterial abilities after 20 m abrasion. Furthermore, the coating exhibits excellent adhesion (level 4B), chemical stability, UV radiation resistance, high-low temperature alternation resistance, stable heat production capacity and photothermal self-healing ability. All these excellent performances can promote its application in a wider range of fields.

中文翻译：

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具有长效防腐抗菌性能的无氟高鲁棒光热自修复超疏水涂层


超疏水表面是一种有前景的抗菌和腐蚀保护策略。然而，有害含氟材料的使用、机械化学稳定性差、杀菌剂的添加以及耐腐蚀性差等往往限制了其实际应用。本文通过简单喷涂疏水改性环氧树脂和两种改性纳米填料（碳纳米管和SiO）的混合物，制备了一种高鲁棒性光热自修复超疏水涂层，用于长期防腐和抗菌应用。改性碳纳米管交联形成的多尺度网络和润滑结构以及可重复的粗糙度赋予涂层高坚固性，使得涂层即使在100次泰伯磨损循环、20 m砂纸磨损和100次胶带剥离循环后仍保持超疏水性。抗菌附着力和光热杀菌活性的协同作用，赋予涂层优异的抗菌效率，对()和()分别达到99.6%和99.8%。此外，系统研究分析了改性环氧树脂、超疏水性、有机涂层及涂层厚度对镁合金防腐性能的影响。更重要的是，所制备的涂层在磨损20 m后仍表现出优异的自洁、防腐和抗菌能力。此外，涂层还具有优异的附着力（4B级）、化学稳定性、耐紫外线辐射、耐高低温交变、稳定的产热能力和光热自修复能力。所有这些优异的性能可以促进其在更广泛领域的应用。