Wood sawdust residues from the Amazon
a sustainable alternative for panel production
Keywords:
Amazon, Composite, Polyurethane, Residues, WoodAbstract
This work seeks to produce wood-based panels with Amazon wood sawing residues and castor oil-based polyurethane resin as binder. Three types of panels were produced, with the following resin proportions: 25%, 30%, and 35%. Physical and chemical tests were performed to assess the potential for using this residue, and physical and mechanical properties of the panels were evaluated. Tukey test was performed with a 5% probability to verify the significance between the means for the different types of panels. The results show that the produced panels have a high density (~800 kg/m3), modulus of rupture (~11 N/mm2), which meet the physical properties and modulus of rupture (Non-structural) required by Brazilian particleboard standards, demonstrating its potential in the use of non-structural panels in furniture or finishing. However, the panels did not meet the modulus of elasticity (~900 N/mm2) property, indicating the need to propose ways to improve this property in such panels in future research.
RESUMO
Este trabalho produziu painéis derivados de resíduos de serragem de madeira amazônica e resina poliuretana à base de óleo de mamona como ligante. Foram produzidos três tipos de painéis, com as seguintes proporções de resina: 25%, 30% e 35%. Foram realizados testes físicos e químicos para avaliar o potencial de aproveitamento desse resíduo e avaliou as propriedades físicas e mecânicas dos painéis. O teste de Tukey foi realizado com 5% de probabilidade para verificar a significância entre as médias para os diferentes tipos de painéis. Os resultados mostram que os painéis produzidos possuem alta densidade (~800 kg/m3), módulo de ruptura (~11 N/mm2) e atenderam os requisitos físicos e o modulo de ruptura (Não estrutural) exigido pela norma brasileira de painéis de partículas, demonstrando seu potencial na utilização em móveis ou acabamentos não estruturais. Porém, os painéis não atenderam à propriedade do módulo de elasticidade (~900 N/mm2), indicando a necessidade de propor formas de melhorar esta propriedade em tais painéis em pesquisas futuras.
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