부피팽창률법을 이용한 활엽수 열처리 목재의 섬유포화점 측정

FSP Mesurement of Heat-treated Hardwoods Using Volumetric Swelling Method

Specimens of seven hardwood species were heat-treated at three temperature levels of 170, 190 and 210°C. Their FSP’s were measured by the volumetric swelling method and com-pared with the control’s. Within a species the FSP decreases as the temperature of heat treat-ment increases. The FSP’s of the controls range from 26.1 to 29.6%, while those of the speci-mens heat-treated at 210°C from 16.9 to 21.8%. There were no difference of basic density be-tween the heat-treated and control specimens. The color indexes of ash and beech specimens were measured using a colorimeter. It was revealed that the temperature of heat treatment af-fected on the color more than the treatment time.