Pine and sugarcane bagasse particleboard using two adhesives for use in the construction industry

This research project aimed to produce and evaluate particleboard using sugarcane bagasse (Saccharum officinarum) and pínus (Pinus taeda; Pinus elliotti) particles by comparing the efficiency of the two adhesives: urea-formaldehyde and polyurethane adhesive based on castor oil. The panels were made with 60% of pine wood particles, and 40% of sugarcane bagasse particles. The physical properties (density, moisture content and thickness swelling after 24h in water immersion), and mechanical properties (modulus of elasticity, modulus in static bending, and perpendicular traction to faces) of the panels were evaluated according to the use requirements set by the standards NBR 14810-1 (ABNT, 2013a), NBR 14810-2 (ABNT, 2013b) and EN-312. Panels produced with PU-Castor presents higher efficiency and compatibility with the physical and mechanical requirements of Brazilian and European standards for panels of type P6 (structural panels for use under severe load conditions in dry conditions). Panels produced with urea-formaldehyde are compatible with panels classified as P2 (non-structural panels for use in dry conditions). The results achieved proved the effectiveness of the panels produced, which can be used in the furniture and construction industries.

Keywords:
Agglomerated panels; Polyurethane based on castor oil; Urea-formaldehyde polymer; Physical-mechanical properties