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Effect of open assembly time and equilibrium moisture content on the penetration of polyurethane adhesive into thermally modified wood
University of Göttingen, Germany.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.ORCID iD: 0000-0002-6909-2025
University of Göttingen, Germany.
2017 (English)In: The journal of adhesion, ISSN 0021-8464, E-ISSN 1563-518X, Vol. 93, no 7, p. 575-583Article in journal (Refereed) Published
Abstract [en]

The effect of wood moisture content and open assembly time on penetration of polyurethane (PU) adhesive into thermally treated Scots pine (195 and 210°C) was investigated according to effective (EP) and maximum penetration (MP) measurements using fluorescence microscopy. For samples treated at 195°C, a higher EP was noted at 8.6% equilibrium moisture content (EMC) after both assembly times (15 and 30 min) while for samples treated at 210°C, increasing wood moisture content resulted in a significant decrease in EP at 12.5% EMC after 15 min assembly time. Extending open assembly time was found to increase the EP of PU adhesive only in the case of samples treated at 195°C and with 8.6% EMC. For samples treated at both treatment temperatures and after shorter open assembly time, the highest MP observed at moderate EMC levels of 8.6 and 8.2% and the lowest at the higher EMC levels of 13.2 and 12.5%.

Place, publisher, year, edition, pages
2017. Vol. 93, no 7, p. 575-583
Keywords [en]
adhesive bondlines, adhesive penetration, bonding variables, fluorescence microscopy, polyurethanes, thermal modification, wood
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-48468DOI: 10.1080/00218464.2015.1118621ISI: 000398274500004OAI: oai:DiVA.org:lnu-48468DiVA, id: diva2:885557
Available from: 2015-12-18 Created: 2015-12-18 Last updated: 2018-05-31Bibliographically approved

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Adamopoulos, Stergios

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf