Particleboards made from Australian red cedar: processing variables and evaluation of mixed-species

Correa, A. A. R.; Albino, V. C. S.; Mendes, L. M.; Bufalino, L.; de Sá, V. A.; Almeida, N. A.

Particleboards made from Australian red cedar: processing variables and evaluation of mixed-species

2012

This work was developed in two stages with the following aims: (1) to evaluate physical and mechanical properties of particleboardsmade from wood residues of Toona ciliata with target densities of 0.65 and 0.70 g cm-³ and 6 and 9% adhesive contents, and (2) to compare particleboards made from 100% T. ciliata particles (TC) with particleboards madefrom 50% T. ciliata particles mixed with 50% Pinus oocarpa particles (TC/P) or 50% Eucalyptus hybrid cloneparticles (TC/E). In the first stage, best results were obtained with 9% urea-formaldehyde and target densityof 0.70 g cm-³. These processing variables were chosen for the production of mixed-species particleboardsin the second stage of the work. TC particleboards had higher mechanical properties than mixed-speciesparticleboards. For physical properties, TC particleboards were similar to TC/P particleboards. TC/Eparticleboards showed lowest results of mechanical properties and highest values of physical properties, andthey are also suitable for interior applications. The results showed great potential in using wood residues ofT. ciliata alone or mixed with Eucalyptus or Pinus species in particleboard production.

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