Influence of Heat Treatment on Color Change of Poplar
摘要
In this paper, Populus tomentosa was used as samples for heat treatment in order to find the initial effect rule of color change, when the temperature rose to180, 200 and 220 oC and the time was kept for 1, 2 and 3 h, respectively. The results are shown as follows: The color of treated wood can be changed obviously by the heat treatment. Under the same temperature, the color saturation becomes smaller and the difference of color becomes more obvious with the increase of the keeping time. Lightness and color hue-angle decreases with the increase of the keeping time. At the same time, the higher the temperature, the bigger the difference of color. Lightness, color hue-angle and the color saturation of the samples decrease with the increasing of the temperature. And the chromatism increases with the temperature increasing.