TY - CHAP A1 - Wozniak, Martin A1 - Wulf, Fabian A1 - Pfriem, Alexander T1 - Investigation of a change in the hardness properties of thermally modified beech wood (Fagus sylvatica L) as a result of a 6-week long-term temperature at 120°C and 140°C T2 - European Conference on Wood Modification 2022 N2 - The aim of this study is to investigate the mechanical properties and structural changes of wood during long-term tempering in mild temperatures. As a result of a long-term heat treatment on beech wood (Fagus sylvatica L), the degradation or decomposition reaction of wood-bound cellulose, hemicellulose and lignins in the low temperature range up to 150°C investigated. For this purpose, test series in the dry state are thermally treated over a period of 6 weeks at a temperature of 120°C and 140°C. Weekly, the mass and dimensions of the test specimens are recorded in order to effectively track the density curve. The mechanical resistance of the wood substrate was realized by a hardness measurement in a weekly period. KW - Brinell-hardness KW - Density KW - IR-Spectroscopy KW - thermal wood modification Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-2816 ER -