Mechanical Properties of OSB Wood Composites with Resin Derived from a Renewable Natural Resource

Abstract

OSB (Oriented Strand Board) is the most important development in the industry of wood products in recent years. However, mainly for reasons of cost industries use as adhesive resins that emit formaldehyde. Formaldehyde is considered a hazardous substance and its concentration indoors is restricted in many countries because of its reactivity, toxicity and pungent odor. This study aimed to attest the feasibility of production of OSB from resin with part of your component derived renewable resource (castor oil-based polyurethane) and Pinus sp. The panels were produced technically evaluated by determining their mechanical properties. In comparison to the minimum requirements of the European normative document EN 300 (2006), average values were higher than the panels for structural use in special wet environment (OSB/4) by up to 41% and 58% modulus of elasticity (MOE) and of modulus of rupture (MOR) in bending parallel to the grain, respectively. Adherence internal reached values at least three times higher than OSB/4.