Superhydrophobic and Anti‐Icing Surface by Femtosecond Laser Direct Writing

作者：Zhenkai Zhu, Peichao Wu, Saulius Juodkazis, Ji Wang, Songbai Yao, Jianhua Yao, Wenwu Zhang · 发表于：Advanced Engineering Materials · 年份：2023 · DOI：10.1002/adem.202300575 · 被引用次数：12 · 研究领域：Surface Modification and Superhydrophobicity、Icing and De-icing Technologies、Adhesion, Friction, and Surface Interactions

Glass fiber‐reinforced polymer (GFRP) is formed with glass fiber as the reinforcing material and resin as the matrix. It is widely used in wind turbine blades because of its lightweight, high strength, and corrosion resistance properties. Herein, a method to prepare superhydrophobic GFRP surfaces by femtosecond laser direct writing combined with fluoroalkylsilane modification is demonstrated. The prepared GFRP surface has excellent superhydrophobicity with contact angle of 163.9° and sliding angle of 3.8°. In the ice resistance tests, the icing delay time is extended from 33 to 273 s at −5 °C. The ice adhesion strength is reduced from 217.4 to 40.3 kPa. The surface still has superhydrophobicity and ice adhesion strength of less than 100 kPa after ten cycles of the test. The laser exposure conditions are optimized for water/ice repelling and are at high intensity of 4 TW cm −2 pulse −1 and 2.5 m s −1 beam travel speed, which make the presented approach efficient for fabrication over industrially large areas.