LAUSR

This work presents a study for using Balsa wood ( Ochroma pyramidale ) waste in the production of oriented strand boards (OSB) agglomerated with castor oil polyurethane resin. For this study, were produced OSB panels with different densities (300 kg/m 3 and 400 kg/m 3 ), with 10 mm thickness and castor oil polyurethane resin in different contents (11% and 15%). The Balsa wood particles were characterized by physical, chemical and anatomical tests that identified the potential of this by-product as raw material for the production of OSB panels. Subsequently, the thermo-physical-mechanical properties of low density OSB panels produced with Balsa wood waste were determined. The results indicated that panels with a density of 400 kg/m 3 and a resin content of 15% obtained a performance that classifies them as OSB type 1—internal and non-structural use panels according to the European Standard EN 300: 2002—OSB—definitions, classification and specifications.