| Titre : |
Facile fabrication of water repellent coatings from vinyl functionalized SiO2 spheres |
| Type de document : |
texte imprimé |
| Auteurs : |
Qianqian Shang, Auteur ; Mengyu Wang, Auteur ; Hu Liu, Auteur ; Lijing Gao, Auteur ; Guomin Xiao, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 465-473 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Alcool polyvinylique
Angle de contact
Dioxyde de silicium
Hydrophobie
Imperméabilisation
Microsphères
Revêtements:Peinture
Sol-gel, Procédé
Surfaces fonctionnelles
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Water repellent SiO2 particulate coatings were prepared by a one-step introduction of vinyl groups on the coating surface. Rough surface structure and low surface energy could be directly obtained. Vinyl functionalized SiO2 (vinyl-SiO2) spheres with average diameter of 500 nm were first synthesized by a sol–gel method in aqueous solution using vinyltriethoxysilane as the precursor. The multilayer SiO2 coating fabricated by dip-coating method was highly hydrophobic with a water contact angle of 145.7° ± 2.3°. The superhydrophobic SiO2 coating with a water contact angle up to 158° ± 1.7° was prepared by spraying an alcohol mixture suspension of the vinyl-SiO2 spheres on the glass substrate. In addition, the superhydrophobic SiO2 coating demonstrated good stability under the acidic condition. However, it lost its hydrophobicity above 200°C because of the oxidation and degradation of vinyl groups. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of monodisperse vinyl-SiO2 spheres - Preparation of SiO2 coatings - Characterization
- RESULTS AND DISCUSSION : Morphology and structural characterization of vinyl-SiO2 spheres - Hydrophobic properties of the multilayers SiO2 coatings - Superhydrophobic properties of the SiO2 coating - Wetting stability of the superhydrophobic SiO2 coating - Thermal stability of the superhydrophobic SiO2 |
| DOI : |
10.1007/s11998-012-9465-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9465-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19096 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 4 (07/2013) . - p. 465-473
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Facile fabrication of water repellent coatings from vinyl functionalized SiO2 spheres in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 4 (07/2013)
