Electrolyte Composition Tuning for Tailored Morphology and Enhanced Anti‐Icing Performance of PFA Superhydrophobic Coatings

作者：Yang He, Xin Wei Wang, Bingbing Wang · 发表于：Journal of Applied Polymer Science · 年份：2025 · DOI：10.1002/app.70043 · 被引用次数：1 · 研究领域：Surface Modification and Superhydrophobicity、Icing and De-icing Technologies、Fiber-reinforced polymer composites

ABSTRACT Surface icing poses significant operational and economic risks in aerospace and power transmission. Superhydrophobic perfluoroalkoxy (PFA) coatings fabricated via electrodeposition offer promising anti‐icing properties; however, their performance depends critically on electrolyte composition. This study employed response surface methodology to optimize key electrolyte variables: PFA concentration, MgCl 2 concentration, and ethanol‐to‐water volume ratio. The ethanol‐to‐water ratio emerged as the dominant factor to control the coating micro/nanostructure and multi‐factor delay icing coefficient by governing hydrogen generation, PFA electrophoretic mobility, solution polarity and ion dissociation. An optimized formulation (PFA: 5.96 g/L, MgCl 2 : 0.128 g/L, ethanol‐water: 49.4:0.6) yielded a coating with minimized solid–liquid contact area. At −10°C, this coating extended droplet freezing time by 52.84 times, enhanced droplet rolling by 49%, increased bounce residence time by 10 ms, and achieved static/dynamic anti‐icing rates of 80.9%/90.7% after 200 min. These improvements stem from smaller, more uniform pores reducing moisture penetration and ice adhesion.