Effect of the particle geometry on lightweight particleboards from Paulownia using high frequency pressing technology

Abstract

The aim of this research is to manufacture lightweight single-layered particleboard made of paulownia plantation wood and to analyse to what extend the panel´s properties are influenced by particle geometry. Panels with a thickness of 16 mm and two levels of density, 300 and 400 kg/m³ were manufactured with urea-formaldehyde adhesive using high-frequency (HF) pressing technology. The entire production process, from stem debarking up to particleboard manufacturing was described and assessed. The physical and mechanical properties of the panels met at least the requirement for LP1 (light)particleboards for general purposes and use in dry conditions. A higher particle size determined increased bending properties and better internal bond, but also more affinity to water absorption. As a product that withstands the criteria for at least LP1 classification, the particleboards made of paulownia manufactured with HF technology are innovative sustainable products for the furniture industry.