Influence of Heat Treatment Using Electric Heating Plate Under Vacuum on Physical Properties and Color of Pterocarpus Macrocarpus Wood
Vacuum heat treatment of wood can enhance its stability,increase its value,and reduce the special odor produced by pyrolysis.In this study,electric heating plates were used for rapid heat treatment of Pterocarpus macro-carpus wood under vacuum conditions.The physical properties and color changes of the resulting wood were analyzed.Results showed that the quality and density of the wood gradually decreased with increasing heat treatment tempera-ture,extension of time,and decreasing vacuum level.The equilibrium moisture content of the wood decreased,lead-ing to improved dimensional stability.The color of wood darkened after heat treatment,and treatment temperature had a more significant effect on color change.
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