Inorganic hydrophobic coatings: Surfaces mimicking the nature

Added value products are being developed in ceramic industry. Different optical effects as bright metallic shine or new functionalities as hydrophobicity or bactericide characteristics are the new properties searched on the tiles. In this study, we prepare glassy coatings for tiles based on copper p...

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Bibliographic Details
Published in:Ceramics international 2013-04, Vol.39 (3), p.2489-2495
Main Authors: Reinosa, Julián J., Romero, Juan. J., de la Rubia, Miguel A., del Campo, Adolfo, Fernández, José F.
Format: Article
Language:English
Subjects:
AMORPHOUS STRUCTURE
B. Microstructure-final
B. Surfaces
CERAMICS
COATINGS
Contact
Copper
COPPER OXIDE
Crystallization
D. Glass
E. Functional applications
Glassy
Nanoparticles
ORGANIC COMPOUNDS
PARTICLES
Tiles
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Summary:Added value products are being developed in ceramic industry. Different optical effects as bright metallic shine or new functionalities as hydrophobicity or bactericide characteristics are the new properties searched on the tiles. In this study, we prepare glassy coatings for tiles based on copper pigment by a conventional industrial process. The obtained coatings present different aesthetical aspects, including bright metallic aspect which confers a high decorative value to the tile. Furthermore, these metallic coatings present hydrophobic properties with contact angles with water as high as 115° and also bactericide characteristics. Superficial microstructure and nanoparticles were found in the bactericide-hydrophobic samples, resembling the surface of hydrophobic leaf surfaces. This structure was formed by the crystallization of CuO nanoparticles as Tenorite due to the copper saturation of the glassy matrix at the surface of the coatings.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2012.09.007