Visual properties of spruce wood coated with lacquers, changed under impact of UV radiation in indoor conditions

• Autorzy: Kúdela J. , Sikora A. , Svocák J.
• Języki publikacji: EN

Abstrakty

EN

This work evaluates accelerated-ageing-induced effects imposed on colour stability of spruce wood coated with colourless polyurethane lacquers proposed for surface treatment for wood artefacts intended for the indoor. There were explored the colour and gloss variations at an accelerated ageing process representing 500 hours. Simultaneously, there was also examined the protective performance of pre-treatment with a UV radiation absorbent agent. The experimental results give evidence that in all cases, during accelerated ageing process, the influence of UV radiation on photo-degradation of the surface-treated spruce wood was significant. The tested lacquers, however, manifested diverse degrees of protective efficacy against UV radiation-induced effects to the wood surface in indoor conditions. The colour stability was found poorer for the surface treatment with lacquers without protective agents against UV radiation. The UV protective substance admixed into the coating material had an obvious decelerating effect on the photo-degradation in the surface-treated wood, but this degradation had not been inhibited absolutely. In all cases, the lightness decreased and the coordinates a* and b* increased. The result was that the treated wood surface attained yellow-brownish hue of various intensities. On the other hand, the gloss quality was preserved in all treatments.

Słowa kluczowe

EN

spruce wood; surface treatment; polyurethane lacquers; colour stability

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2018
• Tom: No. 103
• Strony: 84--89
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Kúdela J.

• Department of Wood Science, Technical University in Zvolen

autor

Sikora A.

• University of Life Sciences Prague, Faculty of Forestry and Wood Sciences,, Department of Wood Processing

autor

Svocák J.

• Technical University in Zvolen, Faculty of Wood Sciences and Technology,, Department of Wood Science

Bibliografia

• 1. ALLEGRETTI, O., TRAVAN, L., CIVIDINI, R. 2009. Drying techniques to obtain whiteBeech. Wood EDG Conference, 23rd April 2009, Bled, Slovenia.http://timberdry.net/downloads/ EDG-SeminarBled/Presentation/EDG.
• 2. ASTM G155, 2005: Standard Practice for Operating Xenon Arc Light Exposure of Non Metallic Materials.
• 3. GIRARDI, F., CAPPELLETTOA, E., SANDAK, J. et al. 2014. Hybrid organic–inorganic materials as coatings for protecting wood. Progr. Org. Coat., 77(2): 449–457.
• 4. HUANG, X., KOCAEFE, D., KOCAEFE, Y., BOLUK, Y., PICHETTE, A. 2012. Aspectrocolorimetric and chemical study on color modification of heat–treated wood duringartificial weathering. Applied Surf. Sci., 258(14): 5360–5369.
• 5. CHANG, T. C., CHANG, H. T., WU, C. L., CHANG, S. T. 2010. Influences ofextractives on the photodegradation of wood. Polym. Degrad. Stab. 95: 516−521.
• 6. KOCAEFE, D., SAHA, S. 2012. Comparison of the protection effectiveness of acrylicpolyurethane coatings containing bark extracts on three heat-treated North Americanwood species: Surface degradation Applied Surf. Sci., 258(13): 5283–5290.
• 7. KÚDELA, J., KUBOVSKÝ, I. 2016: Accelerated-ageing-induced photo-degradation ofbeech wood surface treated with selected coating materials. Acta Facultatis XylologiaeZvolen, 58(2): 27−36.
• 8. KÚDELA, J., IHRACKÝ, P. 2014: Influence of diverse conditions during acceleratedageing of beech wood on its surface roughness. Acta Facultaties Xylologiae, 56(2):37−46.
• 9. KÚDELA, J., ŠTRBOVÁ, M., JAŠ, F. 2016: Influence of accelerated ageing on colourand gloss changes in tree of heaven surface treated with an iruxil coating system. Acta Facultatis Xylologiae Zvolen, 58(1): 25−34.
• 10. LANDRY, V., BLANCHETT, P. 2012. Weathering resistance of opaque PVDF-acryliccoatings applied on wood substrates. Prog. Org. Coat. 75(4): 494–501.
• 11. OLSSON, S. K., JOHANSSON, M., WESTIN M. et al. 2014. Reactive UV-absorber andepoxy functionalized soybean oil for enhanced UV-protection of clear coated wood. Polym. Degrad. Stab., 110: 405–414.
• 12. PERSZE, L., TOLVAJ, L. 2012. Photodegradation of wood at elevated temperature: Colour change. J. Photochem. Photobiol. B: Biol., 108: 44−47.89.
• 13. REINPRECHT, L., ŠOMŠÁK, M. 2015: Vplyv plazmy a UV-aditív v transparentnýchnáteroch na farebnú stabilitu smrekového dreva (Picea abies) pri starnutí v xenoteste.Acta Facultatis Xylologiae, 57(2): 49–59.
• 14. SAHA, S., KOCAEFE, D., BOLUK, Y., PICHETTE, A. 2013a. Surface degradation of CeO2 stabilized acrylic polyurethane coated thermally treated jack pine during acceleratedweathering. Applied Surf. Sci. 276: 86–94.
• 15. SAHA, S., KOCAEFE, D., KRAUSE, C. et al. 2013b. Enhancing exterior durability ofheat-treated jack pine by photo-stabilization by acrylic polyurethane coating using barkextract. Part 2: Wetting characteristics and fluorescence microscopy analysis. Prog. Org.Coat. 76: 504–512.
• 16. SIKORA, A. 2017:Vlivurychlenéhostárnutínakvalitupovrchovéúpravydřevaupravenéhonátěrovýmilátkami.Dip. práca. Drevárska fakulta TU vo Zvolene, 79 p.
• 17. STN 67 3064, 1984:Stanove niezmenyleskunáterov.
• 18. TOLVAJ, L., PERSZE, L., ALBERT, L. 2011. Thermal degradation of wood duringphotodegradation. J. Photoch. Photobio. B 105(1): 90–93.
• 19. WAN, C., LU, Y., SUN, Q., LI, J. 2014. Hydrothermal synthesis of zirconium dioxidecoating on the surface of wood with improved UV resistance. Applied Surf. Sci., 321: 38–42.
• 20. WILLIAMS, R. S., KNAEBE, M. T., EVANS, J., FEIST, W. C. 2001. Erosion rates of wood during natural weathering: Part III. Effect of exposure angle on erosion rate. WoodFiber Sci., 33(1): 50–57.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).