Abstract
ABSTRACT Reconstituted wood panels are widely used in various branches of the wood industry, such as in the furniture sectors and various segments of urban and rural construction. In Brazil, agricultural and forestry residues are abundantly generated, making feasible the study, development and application of alternative and sustainable materials, produced from the use of these wastes. The aim of this study was to produce high-density homogenous panels with wood residues of Pinus elliottii and oat hulls (Avena sativa), pressed with two types of adhesive, castor oil-based polyurethane and melamine formaldehyde, and to evaluate the physical performance of these panels. The physical performance of the panels was evaluated based on the ABNT NBR 14810: 2006, ANSI A208.1: 1999 and BS EN 312: 2003 standards. Analysis of variance (ANOVA) was performed to test the influence of the factors percentage of oat hull, percentage of adhesive and type of adhesive, and the interactions between these factors on the physical properties of the panels. The results indicated physical properties, in some treatments superior to the requirements stipulated by the consulted standards. It was concluded that the panels produced with the castor oil-based polyurethane adhesive showed better physical performance when compared with the panels produced with the melamine formaldehyde adhesive.
Highlights
The development and characterization of new materials have been continuously experimented with applications of these materials, such as more versatile and efficient applications, reduction of energy costs and waste generation, lower environmental impacts and products with less impact on the planet (Silva et al, 2015).The use and application of wood products have grown by leaps and bounds in recent years, in Brazil but throughout the world
The aim of this study was to produce high-density homogenous particleboards with wood residues of Pinus elliottii and oat hulls (Avena sativa), subjected to pressure with two types of adhesives, polyurethane based on castor oil and melamine formaldehyde
Two types of adhesives were used: polyurethane based on castor oil (PU) and melamine formaldehyde (MF)
Summary
The development and characterization of new materials have been continuously experimented with applications of these materials, such as more versatile and efficient applications, reduction of energy costs and waste generation, lower environmental impacts and products with less impact on the planet (Silva et al, 2015).The use and application of wood products have grown by leaps and bounds in recent years, in Brazil but throughout the world. Wood panels are the main raw material in a range of other wood product industries, such as flooring, furniture, packaging, shipbuilding and various construction segments. Brazilian consumption of wood-based panels increased by approximately 15.9% in 2017 compared with 2016, with billing increasing from 246 to 285 million dollars. The expansion and growth of the wood-based panel industries significantly increases the demand for raw materials, forcing the search for other materials (Varanda et al, 2014; Christoforo et al, 2016). The generation of waste is significant in Brazil. In 2016, about 19.1 million cubic meters of wood-based waste were generated. The Brazilian production of particleboards was approximately 3.0 million cubic meters (FAO, 2018)
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