Bonding performance of hot-bonded acetylated beech ( Fagus sylvatica L.) laminated veneer lumber (LVL)

2022 | journal article; research paper. A publication with affiliation to the University of Göttingen.

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​Bonding performance of hot-bonded acetylated beech ( Fagus sylvatica L.) laminated veneer lumber (LVL)​
Slabohm, M. & Militz, H. ​ (2022) 
Wood Material Science and Engineering, pp. 1​-6​.​ DOI: https://doi.org/10.1080/17480272.2022.2124544 

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Authors
Slabohm, Maik; Militz, Holger 
Abstract
This study demonstrates acetylation with acetic anhydride, one of the few industrial wood modification techniques on the market, to increase the dimensional stability and durability of laminated veneer lumber (LVL) made from beech wood (Fagus sylvatica L.). After being acetylated, veneers were hot-bonded to LVL using phenol-formaldehyde resin (PF) or phenol-resorcinol-formaldehyde resin (PRF). The bonding performance (bonding shear strength (BSS) and wood failure (WF)) was tested under the following three conditions: 20°C and 65% RH, water immersion, and rigorous boiling-drying-boiling. Additionally, using the same specimen sizes on a second sample set, the moisture content (MC) and dimensional stability were determined. Results indicate that the PRF resin provided the strongest bonding performance on acetylated LVL and references. Additionally, acetylated LVL outperformed unmodified references in moist settings, particularly the BSS after boiling in water.
Issue Date
2022
Journal
Wood Material Science and Engineering 
Organization
Fakultät für Forstwissenschaften und Waldökologie ; Burckhardt-Institut ; Abteilung Holzbiologie und Holzprodukte 
ISSN
1748-0272
eISSN
1748-0280
Language
English
Sponsor
Fachagentur Nachwachsende Rohstoffe 10.13039/501100010812

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