Potencial de utilização da madeira de Sclerolobium paniculatum, Myracrodruon urundeuva e Amburana cearensis para produção de compensados

Abstract

The aim of the present study was to evaluate the physical and mechanical properties of plywood produced from Sclerolobium paniculatum, Myracrodruon urundeuva and Amburana cearensis wood, comparing them with Pinus oocarpa plywood. Five blades of plywood were produced with phenol formaldehyde adhesive with spread amounts of 270 g/m². The physical properties were moisture, apparent density and total absorption of water. The mechanical properties studied were static bending in the direction parallel and perpendicular, and glue line shear strength , with all tests conducted according to specifications described in ABNT 31: 000.05-001 / 2 (2001). The increase in apparent density of the panels with the addition of basic wood density was observed. For total water absorption, Amburana cearensis and Myracrodruon urundeuva yielded values below 30%. The evaluated panels met European standards for the static bending properties (MOE and MOR) and glue line shear strength tests. It was also observed that, except for the MOE, the species showed physical and mechanical properties superior to those of Pinus oocarpa panels.