The influence of low-density (Paulownia spp.) and high-density (Fagus sylvatica L.) wood species on various characteristics of light and medium-density three-layered particleboards. Issue 1 (2nd January 2021)

• Record Type: Journal Article
• Authors: Nelis, Philipp Alexander; Mai, Carsten
• Is Part Of: Wood material science & engineering. Volume 16:Issue 1(2021)
• Page Start: 21
• Page End: 26
• Publication Date: 2021-01-02
• Subjects: Raw material -- particleboard -- mechanical strength -- density profiles -- compaction ratio -- Paulownia; Wood -- Periodicals; Wood products -- Periodicals; Building, Wooden -- Periodicals; 624.184
• DOI: 10.1080/17480272.2019.1659850
• Languages: English
• ISSNs: 1748-0272

Abstract

ABSTRACT: This study investigates the influence of wood densities on moduli of rupture and elasticity, internal bond strength, surface soundness and density profiles of light and medium-density three-layered particleboards (PB). Therefore, particles of low and high-density wood species in three-layered PB were combined. Different combinations of beech ( Fagus sylvatica L.) as high-density wood species and kiri ( Paulownia spp.) as low-density wood species were used as material for the core and surface layers of PBs with target densities of 500 and 650 kg/m 3 . The results of all tests were influenced by the interaction of two effects: the different densities of the raw materials and the different level of compaction (effectiveness of glue utilization). For target density 500 kg/m 3, the compaction of the kiri particles had a greater influence on strength results, than the higher density of the beech raw material. With increasing the target density from 500 to 650 kg/m 3, a shift of the dominating effect occurred from effective glue utilization due to compaction towards the effect of the raw material density. The low-density raw material showed minor percentage changes than the high-density raw material.