Fabrication of ZnO/epoxy resin superhydrophobic coating on AZ31 magnesium alloy
Fabrication of ZnO/epoxy resin superhydrophobic coating on AZ31 magnesium alloy
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DOI：
10.1016/j.cej.2019.02.032
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发表时间：
2019-07
影响因子：
15.1
通讯作者：
Hui-min Zhou;Rongrong Chen;Qi Liu;Jingyuan Liu;Jing Yu;Cheng Wang;Milin Zhang;Peili Liu;
中科院分区：
文献类型：
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作者：
Hui-min Zhou;Rongrong Chen;Qi Liu;Jingyuan Liu;Jing Yu;Cheng Wang;Milin Zhang;Peili Liu;
超疏水涂层由于具有自清洁、减阻、除雾、防冰、耐腐蚀等优点，已被应用于各个领域，而本研究针对一般超疏水涂层附着力低、耐磨性弱、耐腐蚀性差的问题，提出了一种模仿草生长过程的新思路：严格控制环氧树脂与ZnO晶种的比例，使得ZnO晶种不被完全包覆。在此基础上，制备了由氧化锌棒相互交叉组成的团簇状氧化锌涂层。经硬脂酸改性后，涂层具有超疏水性能，接触角为163°，涂层具有优异的耐磨性和坚固性。由于环氧树脂/ZnO种子和团簇状ZnO的阻挡，涂层表现出优异的耐腐蚀性。同时，制备的簇状ZnO/环氧树脂涂层具有良好的牢固性，能适应胶带剥离、物体间摩擦等各种恶劣环境，可以拓展超疏水涂层的应用。
Superhydrophobic coatings have been applied in various fields because of their advantages such as self-cleaning, drag reduction, dustproof, anti-icing, corrosion resistant etc. However, in this study, a new idea imitating the process of growing grass was proposed to solve the low adhesion, weak wear resistance and poor corrosion resistance of the general superhydrophobic coatings: the ratio of epoxy resin to ZnO seeds were strictly controlled so that ZnO seeds are not completely coated. On this basis, a cluster-like ZnO coating composed of interdigitated ZnO rods was prepared. After modification with stearic acid, the coating exhibited superhydrophobic properties with a contact angle of 163° and the coating showed excellent abrasion resistance and noticeable robustness. Due to the barrier from both epoxy resin/ZnO seeds and cluster-like ZnO, the coating performed excellent corrosion resistance. At the same time, the cluster-like ZnO/epoxy resin coating prepared like seeds rooting has good firmness and can be adapted to various harsh environments such as tape peeling, friction between objects, etc., which can expand the application of the superhydrophobic coatings.