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Sprayable Superhydrophobic Coating with High Processibility and Rapid Damage-Healing Nature
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2020-03-20 , DOI: 10.1016/j.cej.2020.124834
Chunyan Cao , Bo Yi , Jianqiang Zhang , Changshun Hou , Zhaoyue Wang , Gang Lu , Xin Huang , Xi Yao

Superhydrophobic coatings simultaneously exhibiting high substrate binding, mechanical robustness and damage-healing properties are of great significance for practical applications. In this work, an effective silicone-based paint was developed to prepare superhydrophobic coating for the first time with the abovementioned properties. The paint is formulated with supramolecular silicone polymers and silica nanoparticles, which can be sprayed on solid substrates and assembled into porous films with enhanced water repellency. The abundant hydrogen bonds and coordination bonds in the supramolecular silicone polymers provided additional substrate binding and damage-healing properties. The coating can maintain water-repellency upon a series of tests including tape peeling, sandpaper abrasion and underwater placement. They can repeatedly heal chemical and topographical defects by simple thermal treatment due to the dynamic intermolecular crosslinking and chemical reorganization of the supramolecular polymers. Taking advantages of their high processibilty, multifaceted robustness and inherent healing ability, the developed superhydrophobic coatings hold great promise for applications in liquid transportation, oil-water separation, anti-icing and drag reduction.



中文翻译:

具有高加工性和快速损伤修复性质的可喷涂超疏水涂料

同时具有高基材粘合性,机械强度和损伤修复性能的超疏水涂料对于实际应用具有重要意义。在这项工作中,开发了一种有效的有机硅基涂料,以首次制备具有上述性能的超疏水涂料。该涂料由超分子有机硅聚合物和二氧化硅纳米粒子配制而成,可喷涂在固体基材上并组装成具有增强防水性的多孔膜。超分子硅氧烷聚合物中丰富的氢键和配位键提供了额外的底物结合和损伤修复性能。经过一系列测试,包括胶带剥离,砂纸磨损和水下放置,该涂料可以保持防水性。由于超分子聚合物的动态分子间交联和化学重组,它们可以通过简单的热处理来反复修复化学和表面缺陷。利用其高加工性,多方面的坚固性和固有的修复能力,开发的超疏水性涂料在液体运输,油水分离,防冰和减阻方面具有广阔的应用前景。

更新日期:2020-03-21
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