DETERMINATION OF THERMAL CONDUCTIVITY OF LAMINATED WOOD MATERIALS DEPENDING ON THE LAYER ORIENTATION

Year 2021, Volume: 3 Issue: 2, 31 - 36, 25.12.2021

Özkan Cırrık

Abstract

In this study, it was aimed to determine the thermal conductivity coefficient values of laminated wood materials produced with different layer orientation, according to wood species and adhesive type. For this purpose, 5-layers plywood, laminated veneer lumber (LVL), Kerto-Q-LVL and special type plywood (Q-plywood), which formed three rotary cut veneers in the inner layer parallel to each other, perpendicular to the outer layers, panels were produced. In the production of the panels, poplar (Populus deltoides), Scots pine (Pinus sylvestris L.) and spruce (Picea orientalis L.) were used as a wood species and was used urea formaldehyde (UF) and phenol formaldehyde (PF) as adhesive types. The thermal conductivity coefficient measurements of the panels were carried out according to the ASTM C 518 standard. As a results of the study, the highest thermal conductivity coefficient value was obtained from Q-LVL panels produced using UF adhesive from spruce veneers. The lowest thermal conductivity values were obtained from plywood produced using PF adhesive from spruce veneers.

Keywords

Laminated Wood Materials, Plywood, Laminated Veneer Lumber, Thermal Conductivity

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