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Influence of pressure on bond-line shear strength in laminated veneer products
RISE Research Institutes of Sweden, Built Environment.ORCID iD: 0000-0001-8644-4099
RISE Research Institutes of Sweden, Bioeconomy and Health.
2022 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 17, no 6, p. 1020-Article in journal (Refereed) Published
Abstract [en]

In this study, the bond-line strength of different bonding pressure of veneers in dry (9% moisturecontent) and wet (immersed in water) conditions was investigated. The results show that peeledEuropean beech veneers need approximately 0.5– 1.2 MPa pressure to achieve a proper bond-linewhen a urea-formaldehyde adhesive was used. The pressure variation within this range did notsignificantly affect the strength of the dry veneer, but the strength of the wet veneers decreasedas the bonding pressure increased. The type of failure varied, especially for the wet veneers. Athigh pressure, the wood were stronger than the cohesive strength of the adhesive and thestrength of the adhesion between the adhesive and the wood. High pressure, however, caused acompression of the bond-line and resulted in a lack of adhesion.

Place, publisher, year, edition, pages
2022. Vol. 17, no 6, p. 1020-
Keywords [en]
LVP; urea formaldehyde adhesive; beech
National Category
Wood Science
Identifiers
URN: urn:nbn:se:ri:diva-58913DOI: 10.1080/17480272.2022.2051205OAI: oai:DiVA.org:ri-58913DiVA, id: diva2:1647366
Projects
Förutsägande av prestanda i en biobaserad produkt
Funder
Vinnova, 2019-00780Swedish Energy AgencySwedish Research Council Formas
Note

Financial support from Produktion2030, a strategic innovation program supported by VINNOVA [reference number: 2019-00780], Swedish Energy Agency, Formas and the industry is acknowledged with gratitude.

Available from: 2022-03-25 Created: 2022-03-25 Last updated: 2025-09-23Bibliographically approved

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Blomqvist, Lars

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