Leaf vein-inspired transparent superhydrophobic coatings with high stability  

树脉结构启发的高耐久透明超疏水涂层

作　　者：Hang Li Zehao Wang Hongyi Tu Min Chen Yi Wu Limin Wu 李航;王泽浩;涂鸿轶;陈敏;武艺;武利民

机构地区：[1]Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers,Fudan University,Shanghai 200438,China [2]Key Laboratory of Textile Fiber and Products,Ministry of Education,Wuhan Textile University,Wuhan 430200,China

出　　处：《Science China Materials》2025年第4期1203-1211,共9页中国科学(材料科学)(英文版)

基　　金：supported by the National Key Research and Development Program of China(2022YFA1205200);the National Natural Science Foundation of China(52033003);the Natural Science Foundation of Hubei Province(2024AFB702)。

摘　　要：Transparent superhydrophobic coatings hold significant potential for applications in architectural glass and optoelectronic devices.However,obtaining good compatibility between highly transparent,low haze and excellent mechanical stability in a superhydrophobicity coating remains a significant challenge.Inspired by the natural protection mechanism of the hierarchical structure of leaf veins,we have designed and fabricated transparent superhydrophobic coatings with highly detailed hierarchical vein-like ridges via a template-assisted multi-mask photolithography and inverted mold process combined with a spraying technique.The coated glass exhibited not only outstanding superhydrophobicity,with contact angle≥160°and sliding angle≤1.5°but also a high optical transmittance of 88.4%and a low haze of 8.1%,as well as remarkable mechanical durability and weather resistance.透明超疏水性涂层在建筑玻璃和光电设备等领域均具有巨大的应用前景.然而,如何让超疏水涂层兼具高透明、低雾度和高机械稳定性是目前研究中存在的巨大挑战.我们从叶脉多级结构保护叶片的机制中汲取灵感,通过模板倒模工艺和喷涂技术设计并制造出了具有多级叶脉结构的透明超疏水涂层.制备得到的透明超疏水涂层玻璃不仅具有出色的超疏水性能(CA≥160°,SA≤1.5°),而且光学透过率高达88.4%,雾度低至8.1%,并具有优异的机械耐久性和环境耐候性.

关 键 词：superhydrophobic coatings TRANSPARENT low haze ROBUSTNESS bioinspired surfaces 

分 类 号：TQ630.7[化学工程—精细化工]