Physikalische und mechanische Eigenschaften von thermisch modifiziertem juvenilem und adultem Schwarzkiefernholz

Abstract

In this study, test samples of juvenile and mature black pine wood were treated for 3 h at temperatures of 140, 170, and 200 °C. Mass loss, density, equilibrium moisture content (EMC), modulus of rupture (MOR), modulus of elasticity, and impact bending strength (IB) of the separate samples were determined. The purpose of the tests was to determine how heat treatment at the three temperatures influenced the properties of the juvenile and mature wood. The results showed that heat treatment had greater effects on mass loss, EMC, and density of juvenile wood than of mature wood. The results also showed that heat treatment had lesser effects on the MOR, modulus of elasticity, and IB of juvenile wood than of mature wood. The results clearly indicated that heat treatment had different effects on the properties of juvenile and mature black pine wood.