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Journal of Coatings Technology and Research
Erschienen in: Journal of Coatings Technology and Research 1/2017

04.11.2016

Effects of adding TiO2 nanoparticles to a water-based varnish for wood applied to nine tropical woods of Costa Rica exposed to natural and accelerated weathering

verfasst von: Róger Moya, Ana Rodríguez-Zúñiga, José Vega-Baudrit, Allen Puente-Urbina

Erschienen in: Journal of Coatings Technology and Research | Ausgabe 1/2017

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Abstract

The addition of titanium dioxide nanoparticles (TiO2 nanoparticles) to a water-based varnish used for finishing tropical woods was studied. Three different concentrations of TiO2 nanoparticles (0%, 1.0%, and 1.5%) were evaluated. The nanoparticles were characterized by means of the transmission electron microscopy and an X-ray diffractometer. The varnish prepared was evaluated for its viscosity, adhesion of the film to the wood, water absorption, and the effects of natural weathering on the color and quality of the varnish. It was found that viscosity decreases as the concentration of TiO2 nanoparticles increases, while no variation was found in the thickness of the film. Except for Gmelina arborea and Tectona grandis, the adhesion was not statistically affected. It was found that, in the 9 species tested, incorporation of TiO2 nanoparticles decreased the values of water absorption. The evaluation of natural weathering showed that the varnish with no added TiO2 nanoparticles degraded completely after 1 year of weathering exposure, while the modified varnish film endured. Less color change was observed in lumber treated with the varnish containing TiO2 nanoparticles. The best performance of the varnish in the nine tropical woods used was observed when TiO2 nanoparticles were added at 1.5% concentration.
Vorheriger Artikel Impact of hybrid self-assembled nanophase particle-based sol–gel coatings on the localized corrosion behavior of modified 9Cr–1Mo steel in chloride medium
Nächster Artikel Composite coating composed of zeolite Y (FAU) and binder prepared from bis(triethoxysilyl)ethane

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Metadaten
Titel
Effects of adding TiO2 nanoparticles to a water-based varnish for wood applied to nine tropical woods of Costa Rica exposed to natural and accelerated weathering
verfasst von
Róger Moya
Ana Rodríguez-Zúñiga
José Vega-Baudrit
Allen Puente-Urbina
Publikationsdatum
04.11.2016
Verlag
Springer US
Erschienen in
Journal of Coatings Technology and Research / Ausgabe 1/2017
Print ISSN: 1547-0091
Elektronische ISSN: 1935-3804
DOI
https://doi.org/10.1007/s11998-016-9848-7

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