Particleboards with waste wood from reforestation

Juliano Fiorelli, Rafael Dalfito Ramos, Jonathan Tsutomu Sayama, Nubia Garzón Barrero, Eliria de Jesus Agnolon Palone

Resumo


This paper examined the potential of manufacturing bonded particleboards using timber industry waste of Pinus spp. Panels were evaluated with 0.6 and 0.8 g cm-3 of density and produced with urea-formaldehyde resin and bi-component polyurethane resin based on castor oil. Panels were made of particles with nominal dimensions 40 x40 cm and a thickness of1 cm. As process parameters was adopted 2 - 5% moisture content, temperature ranging from 90 to130°C, average pressure of 5.0 MPa and resin content from 10 to 15% of the weight particles. This study determined physical-mechanical properties of the panels, following the recommendations of ABNT (2006) NBR 14810. The results indicated statistically significant difference (p < 0.05) in physical and mechanical properties of the panels studied. Panels were classified by ANSI (1993) A208.1 – Mat-formed wood particleboard: Specification, as of low and medium density. Scanning electron microscopy images (SEM) illustrated the agglomeration of particles for the different resins. The polyurethane resin based on castor oil stood out as a viable alternative in the production of particleboards with timber waste.

 


Palavras-chave


adhesive; castor oil; density; composite

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PDF (English) (baixado


DOI: http://dx.doi.org/10.4025/actascitechnol.v36i2.18757





ISSN 1806-2563 (impresso) e ISSN 1807-8664 (on-line) e-mail: actatech@uem.br

  

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