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Effect of open assembly time and equilibrium moisture content on the penetration of polyurethane adhesive into thermally modified wood
Georg-August-University Göttingen, Germany.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.ORCID iD: 0000-0002-6909-2025
Georg-August-University Göttingen, Germany.
2017 (English)In: The journal of adhesion, ISSN 0021-8464, E-ISSN 1563-518X, Vol. 93, no 7, 575-583 p.Article 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, 575-583 p.
Keyword [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: diva2:885557
Available from: 2015-12-18 Created: 2015-12-18 Last updated: 2017-05-22Bibliographically approved

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Adamopoulos, Stergios
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CiteExportLink to record
Permanent link

Direct link
Cite
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