Electrostatic powder spraying process for the fabrication of stable superhydrophobic surfaces
| Autor: | Yuping Tian, Dongfang Lu, Guotuan Gu, Zhantie Li |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Polyester resin
chemistry.chemical_classification Nanocomposite Materials science Scanning electron microscope technology industry and agriculture General Physics and Astronomy Surfaces and Interfaces General Chemistry Surface finish engineering.material Condensed Matter Physics Superhydrophobic coating Surfaces Coatings and Films Contact angle chemistry Coating engineering Composite material Curing (chemistry) |
| Zdroj: | Applied Surface Science. 257:4586-4588 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2010.12.061 |
| Popis: | Nano-sized Al2O3 particles were modified by heptadecafluorodecyl trimethoxysilane and 2,3-epoxy propoxy propyl trimethoxysilicane to make it both hydrophobic and reactive. The reactive nano-particles were mixed with polyester resin containing curing agents and electrostatic sprayed on stainless steel substrates to obtain stable superhydrophobic coatings after curing. The water contact angle (WCA) on the hybrid coating is influenced by the content of Al2O3 particles in the coating. As the Al2O3 concentration in the coating was increased from 0% to 8%, WCA increased from 68° to 165°. Surface topography of the coatings was examined using scanning electron microscopy (SEM). Nano-particles covered on the coating surface formed continuous film with greatly enhanced roughness, which was found to be responsible for the superhydrophobicity. The method is simple and cost effective and can be used for preparing self-cleaning superhydrophobic coating on large areas. |
| Databáze: | OpenAIRE |
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