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Revista Chapingo serie ciencias forestales y del ambiente
versión On-line ISSN 2007-4018versión impresa ISSN 2007-3828
Resumen
VERGARA-SANHUEZA, Emilio E. et al. Physical and mechanical properties of particle board of Pinus radiata D. Don and maize residues. Rev. Chapingo ser. cienc. for. ambient [online]. 2023, vol.29, n.1, pp.117-129. Epub 23-Jun-2024. ISSN 2007-4018. https://doi.org/10.5154/r.rchscfa.2022.06.046.
Introduction:
Particle board production is based on the use of sawmill and remanufacturing residues; however, the availability of this raw material has decreased significantly due to its use as biomass for firewood fuel.
Objective:
To evaluate the effect of the replacement level of maize (Zea mays L.) and Pinus radiata D. Don residues on physical and mechanical board properties.
Materials and methods:
Maize and P. radiata residue proportions between 0 % (control) and 30 % maize were evaluated. Urea-formaldehyde adhesive was used in proportions of 7.5 % and 9.5 % for fine and thick particles, respectively; pressing was based on industrial parameters with a thickness of 10 mm and 0.77 g∙cm-3 density. Physical and mechanical properties were determined according to particle board standards.
Results:
Thickness, density, moisture, modulus of elasticity and modulus of rupture were similar among maize residue proportions and met the industrial requirement. At 2 and 24 h, absorption and swelling met the industrial and regulatory requirement, except for swelling at 2 h when 30 % maize residues was used. The internal bond (IB) met the industrial requirement with all proportions, but from 20 % onwards there was a significant decrease (P < 0.05).
Conclusions:
Maize residue proportions between 0 and 10 % had similar performance. A proportion of up to 20 % maize provided regulatory and industrial compliance, so it has potential for the particle board industry.
Palabras llave : Zea mays; radiata pine; agricultural residue; particle board industry; maize residues.