UTILIZATION OF PINUS RESINATED Oversize FIBERS IN PRODUCTION OF PARTICLEBOARDS

Morgana Cristina França,Bruna Laís Longo,Caio Cesar Faedo De Almeida,Alexsandro Bayestorff Da Cunha,Willian Grubert

doi:10.1590/1806-90882019000500005

Morgana Cristina França, Bruna Laís Longo + Show 3 more

Open Access

https://doi.org/10.1590/1806-90882019000500005

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Abstract

ABSTRACT The objective of this study was to evaluate the technical feasibility of producing particleboard from oversize resin fibers in a reduced proportion of adhesive. It was used as raw material, oversize resin fibers discarded from the MDF (Medium Density Fiberboard) production process, flake particles of Pinus spp. derived from an MDP (Medium Density Particleboard) company’s chipper and adhesive formed by the urea-formaldehyde resin and paraffin emulsion. The experiment consisted of five treatments, mixing particles and fibers in different proportions (100: 0%; 75: 25%; 50: 50%; 25: 75%; 0: 100%). Three panels were produced per treatment, with nominal density of 650 kg.m-3, 8% resin and pressing cycle of 160ºC, 40 kgf.cm-2 for 8 minutes. The properties of the panels were evaluated by the procedures described in ASTM D-1047 (1993), DIN 53362 (1982) and ABNT / NBR 14810 (2013). The results showed that oversize resin fibers have potential for use in the sector, especially in quantities above 75%, a fact that was evidenced by the values found for dimensional stability and strength/stiffness. For internal adhesion, the increase in the number of fibers above 25% was not significant.

Highlights

Brazil is among the most advanced countries in the world in the manufacture of reconstituted wood panels, and is the country with the largest number of state-of-the-art factories
It was used as raw material, oversize resin fibers discarded from the medium density fiberboard (MDF) (Medium Density Fiberboard) production process, flake particles of Pinus spp. derived from an MDP (Medium Density Particleboard) company’s chipper and adhesive formed by the ureaformaldehyde resin and paraffin emulsion
The results showed that oversize resin fibers have potential for use in the sector, especially in quantities above 75%, a fact that was evidenced by the values found for dimensional stability and strength/stiffness

Summary

Introduction

Brazil is among the most advanced countries in the world in the manufacture of reconstituted wood panels, and is the country with the largest number of state-of-the-art factories. As raw materials for the production of panels, industrial wood waste, forestry waste, otherwise low-quality non-industrialized wood, wood from planted forests and direct recycling of wood are used (Pierre, 2010). In Brazil, wood from planted forests, especially pine and, to a lesser extent, eucalyptus, is the main source of raw material, the initial purpose of the world's first panel industries was to harness forest and industrial waste. The great acceptance of pine species is mainly due to their low density, which results in panels with high compaction ratio (Baldin et al, 2016). The wood industry has great potential for industrial waste utilization, considering that the wood processing industry has, on average, a low utilization, around 40% (Brand, 2010). Hillig et al (2009) state that, waste is often used for some specific purposes, it can in many cases constitute a problem of environmental management regarding companies

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