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

IF 1.5 4区农林科学 Q2 FORESTRY

Iforest - Biogeosciences and Forestry Pub Date : 2023-02-28 DOI:10.3832/ifor4159-015

B. Marcon, J. Viguier, K. Candelier, M. Thévenon, J. Butaud, L. Pignolet, Adélaïde Gartili, L. Denaud, R. Collet, M. Romagnoli

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引用次数: 1

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 Ther-moWood ® 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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杨木胶合板的热处理:物理、机械和耐用性能的改变

由杨木制成的胶合板仅限于室内使用，因为杨木的天然耐久性相当低。最近，木材热处理已被应用于改善性能，如腐烂敏感性和尺寸稳定性。本研究考察了杨木胶合板热处理的潜力，以扩大这种工程木材产品在户外最终用途和新市场的应用潜力。胶合板用两种不同的胶粘剂配方粘接在同一种三聚氰胺脲醛(MUF)树脂上，比较它们各自的抗热处理能力。这些不同的胶合板在饱和蒸汽条件下，在215°C下进行2小时的热改性，然后进行Ther-moWood®工艺，质量损失高达14%。为了评估这种胶合板的任何可能的户外用途，对热处理带来的耐久性改善进行了评估。经过所有的分析，在潮湿的室内和受保护的室外使用条件下使用热处理杨木胶合板的潜力得到了证实。

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来源期刊

Iforest - Biogeosciences and Forestry FORESTRY-

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： The journal encompasses a broad range of research aspects concerning forest science: forest ecology, biodiversity/genetics and ecophysiology, silviculture, forest inventory and planning, forest protection and monitoring, forest harvesting, landscape ecology, forest history, wood technology.