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Fabrication of stable and versatile superhydrophobic PTFE coating by simple electrodeposition on metal surface
Progress in Organic Coatings ( IF 6.5 ) Pub Date : 2022-08-15 , DOI: 10.1016/j.porgcoat.2022.107090
Xin Wang , Bing-Bing Wang , Wei Yang , Qi Zhao , Zhi-Ming Xu , Wei-Mon Yan

Superhydrophobic coating has attracted increasing attention due to its exceptional performance, yet fabricating a stable superhydrophobic coating on metal surfaces remains challenging. In this study, a superhydrophobic PTFE coating on the stainless-steel surface with a high stability and versatile performance was fabricated by the simple electrodeposition and high-temperature curing. This approach allowed the superhydrophobic PTFE coating on any metal surfaces to be fabricated in a few minutes. It was found that the addition of water in the solution played a key role in the coating stability, which was speculated that a stable structure of MgO-MgCl2-H2O formed as an adhesive underlayer for the PTFE coating. Furthermore, the surface morphology and hydrophobicity of the coating could be controlled by the bubbles formation on samples surfaces by varying water contents during the electrodeposition. The coating exhibited a maximum water contact angle of 158 ± 2°, and the performance tests indicated that the superhydrophobic PTFE coating exhibits the outstanding stability, self-cleaning property, anti-condensation, corrosion resistance and anti-scale ability. The scale inhibiting rate of the coated surface was up to 80.75 % after 12-hour immersion in the CaCO3 solution. The optimized parameters for the electrodeposition route are highly desirable for the development of the advanced superhydrophobic PTFE coatings for various applications.



中文翻译:

通过金属表面的简单电沉积制备稳定且多功能的超疏水 PTFE 涂层

超疏水涂层因其卓越的性能而受到越来越多的关注,但在金属表面制备稳定的超疏水涂层仍然具有挑战性。在这项研究中,通过简单的电沉积和高温固化,在不锈钢表面制备了一种具有高稳定性和多功能性能的超疏水 PTFE 涂层。这种方法可以在几分钟内制造出任何金属表面上的超疏水 PTFE 涂层。发现溶液中水的加入对涂层稳定性起关键作用,推测MgO-MgCl 2 -H 2的稳定结构O 形成为 PTFE 涂层的粘合剂底层。此外,涂层的表面形态和疏水性可以通过在电沉积过程中改变水含量在样品表面形成气泡来控制。涂层的最大水接触角为158±2°,性能测试表明,超疏水PTFE涂层表现出优异的稳定性、自洁性、抗冷凝、耐腐蚀和抗结垢能力。在CaCO 3溶液中浸泡12小时后,涂层表面的阻垢率高达80.75% 。电沉积路线的优化参数对于开发用于各种应用的先进超疏水 PTFE 涂层是非常理想的。

更新日期:2022-08-15
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