Scalable Robust Superamphiphobic Coatings Enabled by Self‐Similar Structure, Protective Micro‐Skeleton, and Adhesive for Practical Anti‐Icing of High‐Voltage Transmission Tower

Abstract

Superamphiphobic coatings have wide application prospects in various fields, but suffer from low mechanical robustness. Although some strategies have been reported to solve the issue, it is still challenging for large‐scale preparation of robust superamphiphobic coatings via facile approaches. Here, a universal preparation method of mechanically robust superamphiphobic coatings by spraying a suspension containing silica nanoparticles decorated with perfluorodecyl polysiloxane and adhesive microparticles on various substrates have been reported. Phase separation of the adhesive avoids embedding of the nanoparticles in the adhesive by forming the nanoparticles@microparticles structure and meanwhile generates a reentrant tri‐tier hierachical micro‐/micro‐/nanostructure. Phase separation determines micromorphology, chemical composition, superamphiphobicity, and mechanical robustness of the coatings. Consequently, the coatings show excellent static and dynamic superamphiphobicity. Moreover, the coatings show excellent mechanical robustness because of the combined effects of the self‐similar structure, protective micro‐skeleton, and adhesive. Furthermore, scalable preparation of the suspension and the superamphiphobic coatings have been achieved. The coatings can significantly delay the water freezing time and thus show good passive anti‐icing performance on the 1000 kV high‐voltage transmission tower. It is believed that the robust superamphiphobic coatings have great application potential, as the method is simple and scalable.

Multifunctional Integrated Superhydrophobic Coatings with Unique Fluorescence and Micro/Micro/Nano-Hierarchical Structures Enabled by In Situ Self-Assembly

“…1−3 Because of their special wettability, these materials are promising for selfcleaning, 4,5 oil/water separation, 6,7 corrosion resistance, 5,8,9 biological techniques, 10−12 and anti-icing. 13,14 Among various functional superhydrophobic coatings, luminescent superhydrophobic coatings have generated particular interest and developed rapidly. They have widespread applications in sunlight conversion of agriculture, 15−17 anticounterfeiting technologies, 18,19 bioimaging 20,21 and optoelectronic devi-ces.…”

Superhydrophobic MXene Coating with Biomimetic Structure for Self-Healing Photothermal Deicing and Photoelectric Detector

“…It is meaningful and necessary that the icing time and ice adhesion force on the coatings should be provided before studying the photothermal deicing performance. In order to clarify the deicing performances, the FM coating was studied according to the literature. , A camera was used to film the whole process of water droplets from cooling to solidification, as shown in Figure S23. Before the experiment, because the CA of the DTHL 2 surface is different from that of the FM superhydrophobic surface, it is observed that the water droplets present different shapes on different surfaces.…”

Preparation of Food Grade Superhydrophobic Coatings Based on Attapulgite Nanorods

“…Superhydrophobic surfaces have unique wetting behaviors, including a high water contact angle (CA) of >150° and a low sliding angle (SA) of <10°. In recent decades, superhydrophobic coatings have attracted increasing attention in diverse fields including self-cleaning, − anti-icing, , corrosion resistance, , antibiofouling, , drag reduction, , and oil/water separation. , In order to prepare superhydrophobic coatings, the construction of micro-/nanostructures and the reduction of surface energy are essential. , Perfluorinated compounds with long carbon chains (such as perfluorooctanoic acid) are widely used for preparing superhydrophobic coatings due to their very low surface energy (∼10 mJ m –2 ), good weather resistance, heat resistance, and chemical stability . For example, Boban et al prepared superhydrophobic coatings with fluorinated polyurethane and fluorodecyl polyhedral oligomer polysiloxane .…”

“…Superhydrophobic surfaces have unique wetting behaviors, including a high water contact angle (CA) of >150°and a low sliding angle (SA) of <10°. In recent decades, superhydrophobic coatings have attracted increasing attention in diverse fields including self-cleaning, 1−3 anti-icing, 4,5 corrosion resistance, 6,7 antibiofouling, 8,9 drag reduction, 10,11 and oil/water separation. 12,13 In order to prepare superhydrophobic coatings, the construction of micro-/nanostructures and the reduction of surface energy are essential.…”