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Envelope treatment of wood based materials with concentrated organosilicons

Oberflächenbehandlung von Holzwerkstoffen mit konzentrierten Organosiloxanen

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Abstract

Counteracting moisture ingress in wood and wood based products is crucial for service life prolongation. The use of solvent- as well as water-based organosilicons as envelope treatments on such materials is investigated. Therefore, organosilicons were applied onto four different substrates like OSB and MDF as well as solid wood and plywood. Both treated as well as untreated materials were subjected to a series of floating and imbibition protocols in combination with artificial weathering in order to quantify their hydrophobing action. Envelope treatments of organosilicons show potential in improving water repellent characteristics of solid wood and plywood but have a reduced effectiveness after artificial weathering. The wood based panels OSB and MDF behave opposite. Further research is needed to validate hypotheses on this.

Zusammenfassung

Um die Nutzungsdauer von Holz und Holzwerkstoffen zu verlängern, ist es wichtig, der Aufnahme von Feuchtigkeit entgegenzuwirken. Untersucht wird die Verwendung von lösemittel- sowie wasserbasierten Organosiloxanen zur Oberflächenbehandlung dieser Materialien. Dazu wurden Organosiloxane auf vier verschiedene Werkstoffe, nämlich OSB und MDF sowie Massivholz und Sperrholz, aufgetragen. Sowohl behandelte als auch unbehandelte Proben wurden einer Reihe von Wasserlagerungs- und Tauchversuchen und künstlicher Bewitterung unterzogen, um die hydrophobierende Wirkung zu bestimmen. Die Oberflächenbehandlung mit Organosiloxanen zeigte Potential, die wasserabstoßenden Eigenschaften von Massivholz und Sperrholz zu verbessern, allerdings mit reduzierter Wirkung nach künstlicher Bewitterung. OSB und MDF verhalten sich entgegengesetzt. Zur Bestätigung dieser Hypothesen sind weitere Untersuchungen erforderlich.

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Acknowledgements

Since the European Commission supported the research project HYDROPHOB (QLK5-CT-2002-01439), which was the framework for this study, the authors would like to thank the Commission for the financial support. The authors also wish to thank the Fund for Scientific Research-Flanders (FWO, Belgium) for the postdoctoral funding granted to the second author.

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Faculty of Bioscience Engineering, Laboratory of Wood Technology, Ghent University, Coupure Links 653, 9000, Gent, Belgium

    L. De Vetter, J. Van den Bulcke & J. Van Acker

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  1. L. De Vetter
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  2. J. Van den Bulcke
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  3. J. Van Acker
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Correspondence to J. Van den Bulcke.

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De Vetter, L., Van den Bulcke, J. & Van Acker, J. Envelope treatment of wood based materials with concentrated organosilicons. Eur. J. Wood Prod. 69, 397–406 (2011). https://doi.org/10.1007/s00107-010-0448-4

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  • DOI: https://doi.org/10.1007/s00107-010-0448-4

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