Propiedades físicas de la madera de las especies de Roseodendron donnell-smithii (Rose) Miranda (guayacan blanco) y Gmelina arborea Roxb (melina) térmicamente modificada
Wood thermal treatment improves its stability and resistance to decomposition, although it can affect some mechanical properties. Therefore, this study aims to determine the effect of thermal treatment at temperatures of 120 °C, 140 °C, and 160 °C on the wood of Roseodendron donnell-smithii (White G...
Guardat en:
| Autor principal: | |
|---|---|
| Format: | bachelorThesis |
| Idioma: | spa |
| Publicat: |
2024
|
| Matèries: | |
| Accés en línia: | https://repositorio.uteq.edu.ec/handle/43000/7892 |
| Etiquetes: |
Afegir etiqueta
Sense etiquetes, Sigues el primer a etiquetar aquest registre!
|
Afegir etiqueta | Sumari: | Wood thermal treatment improves its stability and resistance to decomposition, although it can affect some mechanical properties. Therefore, this study aims to determine the effect of thermal treatment at temperatures of 120 °C, 140 °C, and 160 °C on the wood of Roseodendron donnell-smithii (White Guayacán) and Gmelina arborea Roxb (Melina). In R. donnell-smithii, coloration varied with temperature, being more evident at 160 °C. Humectability was low on the tangential face but improved on the radial and transverse faces. pH increased with temperature, and shrinkage significantly increased on all faces. In G. arborea, coloration did not vary significantly. Humectability increased with temperature, and pH slightly decreased at 160 °C. Moisture content decreased at high temperatures, and density increased. Water absorption decreased with thermal treatment, while swelling varied between treatments and the control. Shrinkage and swelling varied among faces, with treatment at 160 °C reducing swelling. Regarding the stability coefficient in G. arborea, statistical differences were recorded between thermal treatments, with an increase in RT/R at temperatures above 120 °C and 140 °C. |
|---|