Abstract

ZAMBRANO, Luis et al. Particle boards manufactured from industrial residues of Pinus patula wood. Madera bosques [online]. 2013, vol.19, n.3, pp.65-80. ISSN 2448-7597.

This study is a proposal to generate uses of industrial residues from sawmills of Pinus patula wood for the manufacturing of particleboards. The aims are to manufacture homogeneous particle-boards with two density levels, determine their physical and mechanical properties and evaluate the results with German and Venezuelan standards. The average water absorption at 2 and 24 hours of both density levels of boards meets the requirements for both standards. The average thickness variation (swelling) by immersion en water at 2 and 24 hours for boards with average density of 767 kg m^-3 meets the requirements for both standards. For the case of the panels with average density of 672 kg m^-3 thickness variation at 24 hours meets the requirements of both standards, while the swelling at 2 hours does not. Regarding the mechanical properties both the modulus of rupture in static bending and tension perpendicular (internal bond) for both real density levels exceed the minimum accepted by standards, demonstrating that industrial residues from P. patula wood exhibit good technological characteristics for medium density particle-boards manufacture.

Keywords : Static bending; density; physical and mechanical properties; medium density particleboard; perpendicular tension; urea-formaldehyde.