Rapid UV-curable constructing rosin-based superhydrophobic composite coatings with self-healing properties for anticorrosion and anti-icing

作者：Jianben Xu, Zhangyan Shi, Yuedong Xing, Wenzhe Niu, Yutao Yang, Xiang Xu, Faai Zhang · 发表于：Progress in Organic Coatings · 年份：2025 · DOI：10.1016/j.porgcoat.2025.109314 · 被引用次数：9 · 研究领域：Surface Modification and Superhydrophobicity、Photopolymerization techniques and applications、Polymer composites and self-healing

Superhydrophobic coatings are extensively used in applications such as anti-icing and anticorrosion owing to their multifunctionality . However, their limited abrasion resistance restricts their wider use. Herein, a rosin-based self-healing superhydrophobic composite coating was developed through a straightforward spraying and ultraviolet photopolymerization method. By incorporating rosin diols to replace a portion of petroleum-based diols, the rigid tricyclic phenanthrene structure enhances the material's mechanical properties (tensile strength of 28.9 ± 0.6 MPa, toughness of 40.4 ± 0.9 MJ m −3 ) and self-healing capabilities (scratches fully heal within 2 h at 80 °C). The combination of micro- and nanoscale hierarchical structures with low surface energy materials endowed the coating with exceptional superhydrophobicity, resulting in a water contact angle of 163.4 ± 1.4°. Notably, modified silica (M-SiO 2 ) was incorporated into the polyurethane matrix via photocrosslinking, considerably enhancing the coating's mechanical and chemical stability, while preserving its superhydrophobicity even in extreme environments. Furthermore, these coatings are multifunctional, offering excellent self-cleaning, antifouling, anticorrosion, and anti-icing properties (with a freezing time of up to 728 s at −15 °C). Their compatibility with various substrates (such as glass, fabrics, paper, metal, and wood) and the simplicity of the preparation process make them highly promising for applicati...