Advertisement

European Journal of Wood and Wood Products

, Volume 69, Issue 2, pp 231–238 | Cite as

Use of wax emulsions for improvement of wood durability and sorption properties

  • Boštjan Lesar
  • Miha HumarEmail author
Originals Originalarbeiten

Abstract

Waxes are used for treatment of wood surfaces for several decades predominately as surface treatments because they weakly penetrate into the wood. In order to overcome this issue, water emulsions were applied in the present experiment. Five water emulsions of various concentrations were used, namely montan wax, polyethylene, ethylene copolymer and oxidized polyethylene wax. Performance of wax treated beech (Fagus sylvatica) and Norway spruce (Picea abies) against white rot, brown rot and blue stain fungi was tested. In parallel, sorption properties of wax treated wood were determined. The treated specimens were more resistant to wood decay fungi. Polyethylene and oxidized polyethylene wax were found to be particularly efficient. Although this treatment does not improve resistance to blue stain fungi, it reduces the sorption of water.

Keywords

Sorption Property Control Specimen Treated Wood Wood Specimen Beech Wood 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Die Verwendung von Wachsemulsionen zur Verbesserung der Dauerhaftigkeit und der Sorptionseigenschaften von Holz

Zusammenfassung

Seit Jahrzehnten werden Wachse fast ausschließlich zur Oberflächenbehandlung von Holz verwendet, weil sie nur schwach in das Holz eindringen. Um das Eindringverhalten zu verbessern, wurden in dieser Studie fünf verschiedene Wasseremulsionen in unterschiedlichen Konzentrationen verwendet, und zwar zwei Montanwachse, Polyethylen, Ethylen-Copolymer und oxidiertes Polyethylenwachs. Die Resistenz von wachsbehandeltem Buchenholz (Fagus sylvatica) und Fichtenholz (Picea abies) gegen Weißfäule-, Braunfäule- und Bläuepilze wurde untersucht. Daneben wurden die Sorptionseigenschaften von wachsbehandeltem Holz bestimmt. Die behandelten Prüfkörper waren gegen Holz zerstörende Pilze resistenter, wobei sich Polyethylen und oxidiertes Polyethylenwachs als besonders wirksam erwiesen. Zwar wird mit dieser Behandlung die Resistenz gegen Bläue nicht verbessert, jedoch wird die Wasseraufnahme reduziert.

Notes

Acknowledgements

The authors would like to acknowledge the Slovenian Research Agency for financial support in the frame of the projects L4-0820-0481 and P4-0015-048. We appreciate the technical support of Gregor Smrdelj, Žiga Melanšek and Jože Avguštinčič.

References

  1. Amthor J (1972) Paraffin dispersions for waterproofing of particle board. Holz Roh- Werkst 30(11):422–425 Google Scholar
  2. Anonymus (2005) Poligen MW1, Technical information. www.basf.de, Accessed 2.10.2008
  3. Berninghausen CG, Rapp AO, Welzbacher CR (2006) Impregnating agent, process for impregnating of dried and profiled wood, and wood product impregnated therewith. Patent EP1660285 Google Scholar
  4. Burger HJ (2006) Method for introducing wax in thermal wood. Patent EP1646483 Google Scholar
  5. Deppe HJ, Ernst K (1996) MDF–Mitteldichte Faserplatten. DRW, Leinfelden-Echterdingen Google Scholar
  6. Evans PD, Wingate-Hill R, Cunningham RS (2009) Wax and oil emulsion additives: How effective are they at improving the performance of preservative-treated wood? Forest Prod J 59(1–2):66–70 Google Scholar
  7. Erhuai L (2008) Wax polish and preparation method thereof. Patent CN101148565 Google Scholar
  8. European Committee for Standardization EN 113 (1989) Wood preservatives; Determination of the toxic values against wood destroying basidiomycetes cultured an agar medium Google Scholar
  9. European Committee for Standardization EN 152-1 (1996) Test methods for determining the protective effectiveness of a preservative treatment against blue stain in service—Part 1: Brushing procedure Google Scholar
  10. Fujino T, Itoh T (1998) Changes in the three dimensional architecture of the cell wall during lignification of xylem cells in Eucalyptus tereticornis. Holzforschung 52:111–116 CrossRefGoogle Scholar
  11. Goethals P, Stevens M (1994) Dimensional stability and decay resistance of wood upon modification with some new type chemical reactants. The International Research Group on Wood Preservation, Document IRG/WP 94-40028, p 14 Google Scholar
  12. Heinrichs FL (2003) Montan wax. In: Bhonet M (ed) Ullman’s encyclopedia of industrial chemistry, vol 39. Wiley-VCH, Weinheim, pp 154–159. Chap 3 Google Scholar
  13. Kurt R, Krause A, Militz H, Mai C (2008) Hydroxymethylated resorcinol (HMR) priming agent for improved bondability of wax-treated wood. Holz Roh- Werkst 66(5):333–338 CrossRefGoogle Scholar
  14. Lesar B, Zupančič M, Humar M (2008) Microscopic analysis of wood impregnated with aqueous montan wax emulsion. Les Wood 60(9):320–326 Google Scholar
  15. Matthies L (2001) Natural montan wax and its raffinates. Eur J Lipid Sci Technol 103:239–248 CrossRefGoogle Scholar
  16. Neimsuwan T, Wang S, Via BK (2008) Effect of processing parameters, resin, and wax loading on water vapor sorption of wood strands. Wood Fiber Sci 40(4):495–504 Google Scholar
  17. Rapp AO, Beringhausen C, Bollmus S, Brischke C, Frick T, Haas T, Sailer M, Welzbacher CR (2005) Hydrophobierung von Holz-Erfahrungen nach 7 Jahren Freilandtest. In: 24th Holzschutztagung der DGFH, Leipzig, Germany, pp 157–170 Google Scholar
  18. Richardson BA (1993) Wood preservation, 2nd edn. E & FN Spon, London Google Scholar
  19. Rowell RM, Banks WB (1985) Water repellency and dimensional stability of wood. Madison U.S. Forest Products Laboratory. FPL 50-RP. p 24 Google Scholar
  20. Schmidt O (2006) Wood and tree fungi biology, damage, protection, and use. Springer, Berlin, p 329 Google Scholar
  21. Scholz G, Krause A, Militz H (2009) Capillary water uptake and mechanical properties of wax soaked scots pine. In: 4th European conference on wood modification, Stockholm, pp 209–212 Google Scholar
  22. Tjeerdsma BF, Boonstra M, Militz H (1998) Thermal modification of non-durable wood species 2. Improved wood properties of thermally treated wood. The International Research Group on Wood Preservation, Document IRG/WP 98-40124, p 10 Google Scholar
  23. Warth AH (1959) The chemistry and technology of waxes. Reinhold, New York Google Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Biotechnical Faculty, Department for Wood Science and TechnologyUniversity of LjubljanaLjubljanaSlovenia

Personalised recommendations