Paneles de Madera Conglomerada Basados en Resinas Ureicas

Efecto de la densidad sobre las propiedades mecánicas.

Abstract

This paper theoretically and experimentally studied the relationship between density and mechanical properties of particleboards obtained from 88.5% of wood chips and 11.5% of urea-formaldehyde resin with 57.35% solids. Paricleboards of 550, 650 and 750 Kg/m3 nominal densities (A, B, and C; respectively) at temperature = 150 °C, pressure = 30 Kg/cm2 and time = 10 min. were obtained. Final properties such as density, bending and internal bond were measured. The density and the internal bond of the panels A and B were statistically equal. Also, a simple regression model that relates density with internal bond, bending strength and flexural modulus, respectively; was adopted.