Modelagem de propriedades físicas e mecânicas em painéis aglomerados de cedro australiano

Abstract

The purpose of this research was to evaluate the influence of compression ratio on the physical and mechanical properties of particleboards through simple linear models. Panels were produced in three compositions: 1) 100% Toona ciliata; 2) 50% Toona ciliata + 50% Pinus sp.; and 3) 50% Toona ciliata + 50% Eucalyptus sp. For the adjusted models, variance analysis and lack of adjustment test were performed. The models were evaluated according to the significance of their coefficients, estimation standard error and determination coefficient. The Pearson linear correlation between variables was also determined. The elasticity and rupture modulus increased with the increase in compression ratio; the opposite occurred for internal bonding, thickness swelling after 2 hours and water absorption. Except for parallel to face compression and thickness swelling, good adjustments of models were obtained for the other variables.