[article]
| Titre : |
Facile fabrication of superhydrophobic alloy surface based on room temperature vulcanized silicone modification |
| Type de document : |
texte imprimé |
| Auteurs : |
Shangda Chen, Auteur ; Hao Wang, Auteur ; Zuteng Wan, Auteur ; Ling Chen, Auteur ; Yangchengyi Liu, Auteur ; Hanghai Fan, Auteur ; Bowen Zhong, Auteur ; Xiufeng Wang, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 1099-1108 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Aluminium -- Alliages
Dip-coating
Elastomères silicones vulcanisables à chaud
Hydrophobie
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Vulcanisation
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Superhydrophobicity of alloy surfaces is generally determined by the low-energy chemical composition and geometric structure of the surface. The appropriate geometry on alloy surfaces can be easily constructed via chemical etching methods. However, the subsequent low-energy modifications for pre-etched alloys are time-consuming or expensive, thus preventing their further application. Here, we prepared superhydrophobic alloy surfaces based on combining wet chemical etching and room temperature vulcanized (RTV) silicone treatment. Compared to traditional immersion methods, RTV silicone treatment for superhydrophobic 6061 Al alloy surfaces needs only 30 s, which is several thousand times faster than stearic acid or polymethyl triethoxy silane solution treatment. Mechanisms of RTV silicone treatment were investigated. The results show that dip-coating modification is different from these traditional methods. We found that the optimized proportion for RTV silicone rubber is HPDMS, PMTSi, and DBTDL with hexane solvent (HPDMS:PMTSi:DBTDL:hexane = 4:3:1:46, weight ratio), and the water contact angles of treated surfaces of pre-etched 6061 Al alloy, pure Al, and steels are 159° ± 2.7°, 168° ± 1.2°, and 169° ± 1.5°, respectively. Herein, our results demonstrate a facile, low-cost strategy to fabricate superhydrophobic alloy surface that is notable and easy to scale up for industrial applications. |
| Note de contenu : |
- EXPERIMENTAL SETUP : Materials - Procedures - Characterization
- RESULTS AND DISCUSSION : Modification efficiency of RTV silicone rubber solution and its immersing modified mechanism - The effect of parameters on wettability of RTV silicone-modified surface - Chemical durability of RTV silicone modification and its performance in other alloy surfaces |
| DOI : |
10.1007/s11998-018-00167-1 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00167-1.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32865 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1099-1108
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Facile fabrication of superhydrophobic alloy surface based on room temperature vulcanized silicone modification in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)
