Preparations of superhydrophobic surfaces using the one-step spin coating method and characterizations of their anti-icing behavior
| Autor: | Y. L. Zhan, Wei Li, Sheng Lei, Chunfa Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Spin coating
Materials science Morphology (linguistics) Metals and Alloys One-Step 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Aluminum substrate Materials Chemistry Wetting Physical and Theoretical Chemistry Composite material 0210 nano-technology Icing |
| Zdroj: | International Journal of Materials Research. 110:1135-1141 |
| ISSN: | 2195-8556 1862-5282 |
| DOI: | 10.3139/146.111845 |
| Popis: | Superhydrophobic surfaces with an excellent anti-icing performance were prepared on an aluminum substrate using a simple one-step spin coating method. The wettability, morphology, and surface compositions of the prepared surfaces were characterized using the measuring instrument for contact angle and sliding angle, scanning electron microscopy, and Fourier transform infrared spectroscopy, respectively. The contact angle of the as-prepared superhydrophobic surfaces was as high as 165 ± 1.5°, and the sliding angle was less than 5° for a 4 μL pure water droplet, indicating excellent superhydrophobicity and low adhesion. The effects of addition of ZnO powders in different amounts on the morphology and wettability were further analyzed. Moreover, the anti-icing performance of the superhydrophobic surfaces was investigated using a simple lab-made icing monitoring apparatus, and the results are discussed using the one dimensional heat transfer and classical nucleation theory. It was found that the theoretical icing time of the superhydrophobic sample was about five times longer than that of the reference sample whereas for the untreated aluminum, the contact angle was 72 ± 1.5°, which was nearly consistent with the experimental results. The present study demonstrates that the prepared superhydrophobic surface can delay the icing time and decrease the icing temperature, and could be found potential applications in various industries. |
| Databáze: | OpenAIRE |
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