Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties

descriptionPublicationkeyboard_double_arrow_right Article 28 Feb 2023 France English Publisher:Italian Society of Sivilculture and Forest Ecology (SISEF)Journal:iForest - Biogeosciences and Forestry, volume 16, pages 1-9 (eissn: 1971-7458,

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Authors: Marcon, Bertrand; Viguier, Joffrey; Candelier, Kevin; Thevenon, Mf; Butaud, Jean-Claude; Pignolet, L; Gartili, A; +2 Authors

doi: 10.3832/ifor4159-015

handle: 10985/23308

Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties

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Abstract

Plywood made of poplar are limited to indoor usages since poplar exhibits a rather low natural durability. Recently, wood heat treatments have been applied to improve properties such as decay susceptibility and dimensional stability. This study examines the potential of exposing poplar plywood to heat treatment to extend the potential of applications of this engineered wood product to outdoor end uses, and new markets accordingly. Plywood panels were glued with two different adhesive formulations based on the same melamine-urea-formaldehyde (MUF) resin to compare their respective ability to resist to the heat treatment. These different plywoods were thermally modified in saturated steam conditions at 215 °C for 2 hours following the ThermoWood® process, up to reach 14% in mass loss. The durability improvement brought by the heat treatment was assessed in order to evaluate any possible outdoor uses for such plywood. After all the conducted analyses, the potential to use heat treated poplar plywoods in humid interior and protected exterior service conditions was confirmed.

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Keywords

K50 - Technologie des produits forestiers, Bending Modulus of Elasticity, fungal durability, [MATH] Mathematics [math], Sciences de l'ingénieur: Mécanique: Mécanique des matériaux, 630, module d'élasticité, [SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], Mathématique, Plywood, http://aims.fao.org/aos/agrovoc/c_6116, Fungal Durability, http://aims.fao.org/aos/agrovoc/c_24947, [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], http://aims.fao.org/aos/agrovoc/c_34363, bond quality, http://aims.fao.org/aos/agrovoc/c_3081, propriété mécanique, Bending Strength, [MATH]Mathematics [math], propriété du bois, http://aims.fao.org/aos/agrovoc/c_28195, http://aims.fao.org/aos/agrovoc/c_6033, bending modulus of elasticity, Termite Resistance, termite resistance, technologie du bois, heat treatment, Forestry, Bond Quality, SD1-669.5, http://aims.fao.org/aos/agrovoc/c_4683, Populus, poplar, http://aims.fao.org/aos/agrovoc/c_fc77ca91, contreplaqué, plywood, bending strength, Poplar, traitement thermique, Heat Treatment

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