Superhydrophobic coating with a micro- and nano-sized MnO₂/PDMS composite structure for passive anti-icing/active de-icing and photothermal applications

Abstract

The prepared coating had good superhydrophobic and photothermal de-icing properties. It could be applied to personal thermal management, oil–water separation and solar-steam generation.

A Passive-Active Anti/Deicing Coating Integrating Superhydrophobicity, Thermal Insulation, and Photo/Electrothermal Conversion Effects

“…Interestingly, the time of ice slipping off was 48 s for the EP-ACP coating (Figure h) and 87 s for the ACP coating (Figure S6) before it completely melted. This phenomenon may be attributed to the formation of Cassie ice, and the interfacial model is shown in Figure i. For the superhydrophobic EP-ACP coating, the ice contacting micronano protrusion surface melted due to Joule heat.…”

“…Commonly, improving the superhydrophobicity of the coatings is the dominant method to enhance the passive anti-icing efficiency. , Inspired by the “lotus effect”, the superhydrophobic coatings are designed to possess suitable surface roughness (mainly micronano structures) and low surface energy . When water droplets contact the surface of the superhydrophobic coating, the micronano structure on the surface can trap air to isolate the water droplets and reduce the effective contact area between the substrate surface and water droplets, so as to achieve the purpose of delaying the icing time of water droplets .…”

Research on the Mechanism of Frost Heaves Caused by Void Water Accumulation behind the Lining of High-Speed Railway Tunnels in Cold Regions

“…However, these measures usually do not consider the short cycle. Problems include temperature fluctuations, high energy consumption [3,4], freezing of water in the drainage plate pores [5], potential safety hazards [6], and high costs [7][8][9].…”