Use of Populus deltoides wood in the Production of MDP and HDP

Pâmela Caroline Lau Sozim,Raquel Marchesan,Fabiane Salles Ferro,Everton Hillig

doi:10.1590/2179-8087-floram-2020-0090

Pâmela Caroline Lau Sozim, Raquel Marchesan + Show 2 more

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https://doi.org/10.1590/2179-8087-floram-2020-0090

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Abstract

Abstract The aimed to evaluate the properties of MDP and HDP panels, produced with pure Populus deltoides or in a mixture with Pinus taeda, together with urea-formaldehyde resin. The density and chemical properties of this wood with 8 and 12 years of age were determined, which were used for the production of panels with nominal density of 0.65 and 0.90 g.cm-3. Water absorption and thickness swelling tests were performed after 2 and 24 hours of immersion, as well as static bending and perpendicular tensile. Populus deltoides wood was classified as low-density in both ages and presented chemical properties similar to Pinus taeda. Mechanical properties obtained for the panels produced reached the minimum requirements values established by the standards NBR 14810-2 and ANSI A208.1, demonstrating the potential use of wood species for the production of MDP and HDP panels, at both ages studied and used pure or mixed with Pinus taeda wood.

Highlights

AND OBJECTIVESFor particleboard production, companies use Pinus taeda, Eucalyptus grandis and Eucalyptus urograndis species as raw material, which the plantations are located mainly in the south of the country
The wood of Populus deltoides with 8 and 12 years old presented basic density close to the wood of Pinus taeda, a species traditionally used in the manufacture of particulate panels
The use of short and thick particles of Populus deltoides in the production of medium density particleboard (MDP) and highdensity particleboard (HDP) panels, resulted in better tensile strength perpendicular, and when mixed the long and fine particles of Pinus taeda improved the dimensional stability of the panels, mainly for the thickness swelling property

Summary

Introduction

Companies use Pinus taeda, Eucalyptus grandis and Eucalyptus urograndis species as raw material, which the plantations are located mainly in the south of the country. For this purpose, the trees are cut shallowly at age of 15 for pine and close to 7 for eucalyptus (Arauco Forest Brasil SA, 2018; Berneck SA, 2019). According to Trianoski et al (2011) and Bianche et al (2012), the use of new species, pure or mixed with traditional species, in the production of particleboard is characterized as a fast, low cost, and sustainable alternative. In Brazil, they have been cultivated in the states of Paraná and Santa Catarina, aiming mainly at making matchsticks (Medeiros & Hope, 2002; Lorenzi et al, 2003)

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