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Multi-stimuli-triggered and self-repairable fluorocarbon organic coatings with urea-formaldehyde microcapsules filled with fluorosilane
Journal of Materials Science & Technology ( IF 11.2 ) Pub Date : 2020-01-17 , DOI: 10.1016/j.jmst.2019.11.022
Paul C. Uzoma , Fuchun Liu , En-Hou Han

For the purpose of overcoming the lack of durability problems associated with superhydrophobic surfaces which hitherto has limited their use; we prepared multi-stimuli wettability response coatings using a mixture of fluorocarbon resin and urea-formaldehyde microcapsules filled with fluorosilane via interfacial polymerization process. The microcapsules are of good thermal stability and can be triggered to release their core content on exposure to atmospheric conditions resulting in the increase in the water contact angle from 97° to 151°. The prepared coatings gave good adhesion strength, and also showed an increase in the hydrophobic property after undergoing scratch, solvent and UV accelerated aging test. In addition, they offered good self-healing of the hydrophobic property after an initial loss due to alkaline immersion and oxygen plasma etching. The electrochemical measurements revealed a remarkable impedance recovery and suppression of corrosion activities, suggesting them to be a potential candidate material for corrosion protection.



中文翻译:

含氟硅烷的脲醛微胶囊的多刺激触发和自修复碳氟化合物有机涂料

为了克服缺乏与超疏水表面有关的耐久性问题,迄今为止,超疏水表面已经限制了它们的使用;我们使用氟碳树脂和填充有氟硅烷的脲醛微胶囊的混合物,通过界面聚合工艺制备了多刺激性润湿响应涂层。微胶囊具有良好的热稳定性,在暴露于大气条件下可以触发释放其核心成分,从而导致水接触角从97°增至151°。所制备的涂层具有良好的粘合强度,并且在经历刮擦,溶剂和UV加速老化测试后还显示出疏水性的提高。此外,由于碱浸和氧等离子刻蚀,它们在最初损失后提供了良好的疏水性自修复性能。电化学测量显示出显着的阻抗恢复和腐蚀活性抑制,表明它们是用于腐蚀防护的潜在候选材料。

更新日期:2020-01-17
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