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Dimensional stabilization of compressed laminated veneer lumber by hot pressing in an airtight frame
University of Tokyo. (Asian Natural Environmental Science Center)
Kyoto University. (Research Institute for Sustainable Humanosphere)
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Materials.ORCID iD: 0000-0002-9156-3161
USDA, Forest Service, Forest Products Laboratory, Madison USA. (EcoBuild guest researcher)
2008 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 3, no 3-4, 119-125 p.Article in journal (Refereed) Published
Abstract [en]

Abstract The purpose of this study was to evaluate the dimensional stability and strength properties of compressed laminated veneer lumber (LVL) produced using a closed hot pressing system. LVL specimens were produced with varying number of veneers using either diphenylmethane diisocyanate (MDI) or a water-soluble phenol formaldehyde (PF) resin at varying temperatures (160?200°C), pressures (0.5?3 MPa) and hot-pressing times (2?16 min). Results show that the heating process decreases the recovery of compressive deformation in the veneers when subjected to cyclic moisture and heat conditions. Thickness swelling was approximately 5% after a drying, wetting and boiling cyclic test for LVL using the MDI resin and hot pressed at 200°C for 8 min. Modulus of elasticity and rupture increased for samples produced in both an open press and the closed press with an increase in the number of veneers and density, as did the absorbed energy in impact bending.

Place, publisher, year, edition, pages
Taylor & Francis Group, 2008. Vol. 3, no 3-4, 119-125 p.
Keyword [en]
Closed heating system, compressed LVL, dimensional stability, pressure, strength property
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-81275DOI: 10.1080/17480270902975269OAI: oai:DiVA.org:kth-81275DiVA: diva2:497279
Note
QC 20120211Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2017-12-07Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.1080/17480270902975269

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Wålinder, Magnus E. P.

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  • apa
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