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A photothermal superhydrophobic coating with un-fluorinated modified CNTs for anti-icing applications on concrete.
- Source :
-
Materials Letters . Jan2024, Vol. 355, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- • Proposed a simple and un-fluorinated superhydrophobic modification method for CNTs. • A modified CNTs/ epoxy coating with water contact angle of 151° was prepared on concrete surface. • The coating temperature rapidly increased from −10 ℃ to 81 ℃ under one sunlight intensity. • The freezing time of water droplets on the concrete surface had been extended from 55 s to 680 s. The problem of easy icing and difficult anti-icing on concrete pavement has prompted using superhydrophobic coatings as a potential solution. However, the coatings are prone to wetting failure after repeated icing-deicing cycles. In this study, a superhydrophobic and photothermal coating consisting of unfluorinated modified-carbon nanotubes (M-CNTs) and commercial epoxy is constructed by a simple spray process on concrete for anti-icing. Incorporating M-CNTs imparts the coating with exceptional superhydrophobic and photothermal characteristics, endowing the coating surface with excellent deicing under sunlight irradiation. The contact angle of the coating reaches 151° at −10 °C, and the freezing time extends from 55 s to 680 s. Under one sunlight intensity, the coating temperature rapidly increases from −10 ℃ to 81 ℃, and the ice changes from solid to liquid. It effectively acts as a barrier between water and the concrete surface, making it highly suitable and valuable in practical applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 355
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 173853134
- Full Text :
- https://doi.org/10.1016/j.matlet.2023.135463