Abstract
The present study aimed to characterize medium density particleboard manufactured with CCB treated particles of Pinus sp. wood specie and alternative mixed vegetal oil-base bicomponent polyurethane resin. For this, three different resin concentrations (10 %, 12 % and 15 %) were used in combination with the presence or absence of the CCB preservative, resulting in six distinct treatments. The particleboards were produced according the Brazilian Standard - NBR and evaluated according European standards - EN. The results met the requirements of NBR and EN. The technical feasibility of making panels with those materials used were proved and the quality of the product according to its performance were verified, indicating the possibility to use alternative bicomponent polyurethane resin from mix vegetal oil. Statistical analysis demonstrated that adhesive and preservative factors and the interaction between them were significant on physical and mechanical properties.
Keywords:
Wood panels; Pinus; CCB preservative; polyurethane resin
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Where: density (ρ); thickness swelling after 2 hours (IE-2h) and after 24 hours (IE-24h), water absorption after 2 hours (Abs-2h) and after 24 hours (Abs-24h), modulus of rupture (MOR), modulus of elasticity (MOE), normal tensile strength (TP), surface bolt pullout test (RAPf) and top bolt pullout test (RAPt).
Where: thickness swelling after 2 hours (IE-2h) and after 24 hours (IE-24h), water absorption after 2 hours (Abs-2h) and after 24 hours (Abs-24h).
Where: modulus of rupture (MOR), modulus of elasticity (MOE).
Where: normal tensile strength (TP), surface bolt pullout test (RAPf) and top bolt pullout test (RAPt).