Strength Properties of Medium Density Fiberboards (MDF) Manufactured with Pinus Elliottii Wood and Polyurethane Resin Derived from Castor Oil

The Objective of this work was to evaluate the mechanical properties: modulus of rupture (MOR), tensile strength in perpendicular direction (TP) and tensile strength in surface direction (TS) of Medium Density Fiberboards (MDF) manufactured with polyurethane resin prepared with castor oil (PU Castor Oil) and fibers of Pinuselliottiiwood. To the essay characterization was used the European Standard EMB/IS-2:1995, and was prepared fiberboards with 500×500 mm and two thickness (8mm and 15 mm), one proportion of resin (6%), hot pressing (50 bar and 160°C), nominal density of 0,75 g/cm3 and fiber with 12% of moisture content. The results of the mechanical properties obtained shows that the Medium Density Fiberboards can be manufactured with 6% of the PU Castor Oil.