期刊
COATINGS
卷 11, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/coatings11040432
关键词
superhydrophobic; icephobic; TiO2; aluminum alloy; low surface energy; water contact angle; sol– gel coating; rf-sputtered Teflon(®)
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Hydro-Quebec
- Industrial Chair on Atmospheric Icing of Power Network Equipment (CI-GELE)
- Canada Research Chair on Engineering of Power Network Atmospheric Icing (IN-GIVRE)
Preventing ice formation is more effective than traditional deicing methods. By turning an aluminum surface superhydrophobic, ice adhesion can be reduced, with demonstrated adaptability to insulating surfaces. The coexistence of rough nanostructures and low-surface-energy compositions is essential for surfaces to be superhydrophobic and icephobic.
Icing on surfaces such as cables or high-voltage insulators may often lead to severe safety issues such as power outages in cold winter conditions. Conventional methods used to tackle such icing problems include mechanical deicing, where the ice is scraped or broken, and chemical deicing, where deicers such as ethylene glycol are used. However, the best approach to addressing these issues is to prevent ice formation in the first place. Research in the past few decades have shown hydrophobic and superhydrophobic surfaces to be effective in reducing ice adhesion. We used the concept of water repellency to turn an aluminum surface superhydrophobic to minimize ice adhesion on these surfaces. However, to render these surfaces also applicable to insulating surfaces, we also demonstrated the adaptability of the concept on a low dielectric oxide, TiO2, to an aluminum surface with icephobic properties. This work demonstrates the importance of the coexistence of rough nanostructures as well as low-surface-energy compositions on a surface to make it superhydrophobic and icephobic and is applicable on metals and insulating surfaces.
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