Abstract
Superhydrophobic surfaces have great potential for self-cleaning, anti-icing, and drag-reducing because of their water repellency property. However, their super-hydrophobicity is destroyed under mechanical abrasion due to the vulnerability of the delicate surface textures. Here, we demonstrate a strategy to create a robust superhydrophobic surface using MXene and fluoridated silica as functional fillers in epoxy resin. The fluoridated silica produces low surface energy, MXene serves as a wear-resistant phase and epoxy resin is the binding matrix. The composite coating demonstrates a self-cleaning effect to remove particles from the superhydrophobic surface by rolling water droplets. Moreover, the coating exhibits excellent mechanical durability by standing abrasion to maintain super-hydrophobicity. The superhydrophobic composite coating has the advantages of low cost and feasibility and has the potential for expandable industrial promotion.
Highlights
IntroductionSuperhydrophobic surface, inspired by the “Lotus effect” (contact angle > 150◦, sliding angle < 10◦), has received considerable attention in the fields of self-cleaning, anti-icing, antifog, and anticorrosion
Superhydrophobic surface, inspired by the “Lotus effect”, has received considerable attention in the fields of self-cleaning, anti-icing, antifog, and anticorrosion
We proved that the MXene flakes and F-SiO2 NPs were partially exposed on the coating surface
Summary
Superhydrophobic surface, inspired by the “Lotus effect” (contact angle > 150◦, sliding angle < 10◦), has received considerable attention in the fields of self-cleaning, anti-icing, antifog, and anticorrosion. Methods for preparing rough surface structures can be divided into two categories. The other is the "bottom-up" approach that begins with a single small component to produce a complex surface, such as spraying, spin coating, and dipping physical deposition techniques, to prepare superhydrophobic coatings [6,8,9,10,11]. This method incorporates a viscous resin solution as the matrix and functional powders as the reinforcement to prepare a superhydrophobic composite coating. Due to the advantage of feasibility and low cost, the spray-coating method shows manufacturing potential for industrial application
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