Abstract
The physical and mechanical properties of wood and wood-based panels can be effectively improved by modification with nanoparticles. This paper focuses on effects of modifying veneer with titanium dioxide (TiO2) nanoparticles on the performance of a waterborne coating and formaldehyde emission. Commercial waterborne varnish was used to apply a surface finish on the modified veneered panels. Changes caused by TiO2 nanoparticle treatment that could affect the finishing performance were measured. The results showed slight increases in the weight and contact angle of the veneers treated with TiO2 nanoparticles, whereas the modified veneered panels after surface finishing presented improved hardness at high nanoparticle loadings. Modification of the veneers by nanoparticles had a minor negative influence on the coating glossiness and adhesion due to a blocking effect between the coating film and the modified veneers. Formaldehyde emissions were considerably reduced due to degradation by the TiO2 particles under UV-light irritation.
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This work was funded by the Fundamental Research Funds for the Central Universities (2572016EBJ1).
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Zhu, X.D., Liu, Y. & Li, Z. Surface coating performance of TiO2 nanoparticle-modified veneered panels and their influence on formaldehyde emission. J Coat Technol Res 14, 1271–1278 (2017). https://doi.org/10.1007/s11998-017-9925-6
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DOI: https://doi.org/10.1007/s11998-017-9925-6