Some properties of wood plastic composites produced from heat treated wood material

In this study, Alnus gulutinesa subs. berbata, A lignocellulosic filler of Betulaceae family. Berbata (bearded alder) was used. The permission of the Artvin Regional Directorate has been obtained for the felling of the trees and it has been obtained from the Artvin Merkez Saçinka region. When determining the tree to be used, the tree is not diseased, knots, cracks, tumor, fiber curvature, such as defects have been observed. Wood samples from the trees were taken from the ground at a height of 20-30 cm and 150 cm in height. Then, it was taken to the forested timber storage and was sized to be 12.5x2.5x150 cm in width, thickness and length, respectively. High density polyethylene (HDPE) was used as polymer plastic. In a study using larch wood, heat treatment was carried out at different temperatures (190, 200, 212 and 225 °C) for 60, 120 and 180 minutes and changes in dimensional stability were investigated. In a study using birch wood, heat treatment was performed at temperatures of 3, 6, and 9 hours and at temperatures of 130, 160, 190 °C and variations in bending strength and elastic modulus were investigated. In a study, poplar wood, a species with low resistance, was used. Variations in heat-treated and non-heat-treated samples are indicated.