Abstract
Panels of pine sapwood coated with 30 different coating systems were exposed to natural weathering in Vienna as well as artificial weathering using fluorescent UV-lamps and water. The aim was to compare coating durability in natural and artificial weathering in terms of the exposure time until the panels reached a defined limit state where the coatings required maintenance. For both weathering methods the durability of the coating systems was influenced by film thickness and for the semi-transparent systems also by pigmentation. Three opaque coating systems lasted over 10,000 h of artificial weathering. Comparison of the natural and artificial weathering regarding durability of the coating systems (time to limit state) with the present results (after 30 months natural weathering) revealed a non-linear correlation. The collected data can provide a basis for rough service life estimation of exterior wood coatings based on standardised weathering methods.
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References
Abrahams IL, Graystone JA (1996) Natural weathering of exterior wood coatings: a comparison of performance at five European sites. In: Proceedings of the XXIII FATIPEC Congress, Brussels, Belgium
Arnold M, Sell J, Feist WC (1991) Wood weathering in fluorescent ultraviolet and xenon arc chambers. For Prod J 41(2):40–44
Arnold M, Feist WC, Williams RS (1992) Effect of weathering of new wood on the subsequent performance of semitransparent stains. For Prod J 43(3):10–14
Arnold M, Svane P, Podgorski L, Grüll G, Dearling TB (2006) Repeatability and reproducibility of the EN 927-3 natural weathering test. In: Proceedings of the 5th Woodcoatings Congress, PRA, Hampton
ASTM D823-95 (2012) Standard practices for producing films of uniform thickness of paint, varnish, and related products on test panels
Brischke C (2007) Untersuchung abbaubestimmender Faktoren zur Vorhersage der Gebrauchsdauer feuchtebeanspruchter Holzbauteile. Dissertation. Hamburg. Universität
Buxton A, Graystone J A, Holman R, Macchi F (2009) Controlled temperature natural weathering. In: Martin JW, Ryntz RA, Chin J, Dickie RA (eds) Service life prediction of polymeric materials. Springer, Berlin. ISBN: 978-0-387-84875-4
Creemers J, de Meijer M, Zimmermann T, Sell J (2002) Influence of climatic factors on the weathering of coated wood. Holz Roh- Werkst 60:411–420
De Meijer M (2001) Review on the durability of exterior wood coatings with reduced VOC-content. Prog Org Coat 43:217–225
De Meijer M (2002) Mechanisms of failure in exterior wood coatings. In: Proceedings 3rd international Woodcoatings Congress, PRA, Hampton
De Meijer M, Militz H (2001) Moisture transport in coated wood. Part 2: influence of coating type, film thickness, wood species, temperature and moisture gradient on kinetics of sorption and dimensional change. Holz Roh Werkst 58:467–475
Derbyshire H, Miller ER (1996) Moisture conditions in coated exterior wood. Part 3: moisture content during natural weathering. J Inst Wood Sci 14(4):169–174
EN 927-6 (2006) Paints and varnishes—coating materials and coating systems for exterior wood—Part 3: exposure of wood coatings to artificial weathering using fluorescent UV lamps and water
EN 927-3 (2012) Paints and varnishes—coating materials and coating systems for exterior wood—Part 3: natural weathering test
EN ISO 2808 (2007) Paints and varnishes—determination of film thickness
EN ISO 4628-4 (2003) Paints and varnishes—evaluation of degradation of coatings—designation of quantity and size of defects, and of intensity of uniform changes in appearance—Part 4: assessment of degree of cracking
Evans PD (1996) The influence of season and angle of exposure on the weathering of wood. Holz Roh- Werkst 54:200
Graystone J (2004) Performance of exterior wood coatings (state of the art trough COST E18). In: Proceedings of the 4th Woodcoatings Congress, PRA, Hampton
Grüll G, Truskaller M, Podgorski L, De Windt I, Bollmus S, Suttie E (2010) Moisture conditions in coated wood panels during 18 months natural weathering at five sites in Europe. In: Proceedings of the 7th Woodcoatings Congress, PRA, Hampton
Grüll G, Truskaller M, Podgorski L, Georges V, Bollmus S, Jermer J (2011a) WOODEXTER Work Package 3—interaction of wood and coatings—effect on the performance of wood products—report on natural weathering trials. Holzforschung Austria, Vienna (HFA-Report No. FFG 443)
Grüll G, Truskaller M, Podgorski L, Bollmus S, Tscherne F (2011b) Maintenance procedures and definition of limit states for exterior wood coatings. Eur J Wood Prod 69:443–450
Grüll G, Spitaler I, Truskaller M (2011c) Moisture protection and performance during 5 years exposure of 19 wood coating systems on a cladding in Vienna. International Research Group on Wood Protection, IRG/WP 11-40561
Hora G (2003) New quality requirements for exterior wood coatings under ecological demands derived from recent European Research and Development Projects. DREWNO 46(169):57–69
Kiguchi M, Suzuki M, Kinoshita T, Kawamura J (1997) Estimation of weather resistance of wooden sashes finished with exterior stains. Mater Life 9(4):188–195
Kropf FW, Sell J, Feist WC (1994) Comparative weathering tests of North American and European exterior wood finishes. For Prod J 44(10):33–40
Martin JW (2001) Advances in predicting the service life of coatings. In: Proceedings of the COST E18 Seminar “Life time prediction”, Paris, France
Martin JW (2002) Repeatability and reproducibility of field exposure results. In: Martin JW, Bauer DR (eds) Service life prediction: methodology and metrologies. American Chemical Society symposium series, vol 805, pp 2–22
Niemz P (1993) Physik des Holzes und der Holzwerkstoffe. DRW-Verlag Weinbrenner, Leinfelden-Echterdingen. ISBN 3-87181-324-9
Podgorski L, Arnold M, Hora G (2003) A reliable artificial weathering test for wood coatings. Coatings World, February 2003, pp 39–48
Sell J, Weiss K (1989) Apparat für die künstliche Bewitterung von Holz und Holzanstrichen. Farbe und Lack 6:417–418
Stirling R, Morris PI (2013) Improved coating performance on wood treated with carbon-based preservatives and an ultraviolet/visible light protective precoat. For Prod J 63(3–4):95–100
Thelandersson S, Isaksson T, Suttie E, Frühwald E, Toratti T, Grüll G et al (2011) Quantitative design guideline for wood outdoors above ground applications. International Research Group on Wood Protection, IRG/WP 11-20465
Truskaller M, Spitaler I, Grüll G (2011) Wartungsintervalle von Holzbeschichtungen - 5 Jahre Freilandbewitterung von Balkon- und Fassadenelementen. Proceed. Wiener Holzschutztage 2011, Holzforschung Austria, Wien
Williams RS, Knaebe M, Sotos P (2008) Effect of surface preparation on service life of top-coats applied to weathered primer paint. In: Proceedings 6th Woodcoatings Congress, PRA, Hampton
Acknowledgments
The results presented in this paper are part of the research project “Maintenance Indicator for Wooden Building Elements”. Financial support by the Austrian Research Promotion Agency (FFG) and the companies Akzo Nobel Coatings GmbH, Holz Leeb GmbH, Remmers Austria GmbH and Teknos A/S is gratefully acknowledged.
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Grüll, G., Tscherne, F., Spitaler, I. et al. Comparison of wood coating durability in natural weathering and artificial weathering using fluorescent UV-lamps and water. Eur. J. Wood Prod. 72, 367–376 (2014). https://doi.org/10.1007/s00107-014-0791-y
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DOI: https://doi.org/10.1007/s00107-014-0791-y