浙江农林大学学报2011，Vol.28Issue(3)：455-459,5.
热处理条件对杉木颜色变化的影响
Heat-treatment influence on Cunninghamia lanceolata discoloration
摘要
Abstract
This paper investigates the effect of heat-treatment temperature and processing time on Chinese fir (Cunninghamia lanceolata) discoloration. Chinese fir boards were heat treated at 170 ℃, 190 ℃ and 210 ℃ for 2 h, 3 h and 4 h respectively, and then the color values of Chinese fir before and after heat treatment were determined by a Chroma Meter DC-P3. And the effect on color characteristics of sapwood and heartwood were compared. Results showed that with increases of time and temperature, the brightness of the specimens board brightness (α) decreasesd and the chroma (△E) increased. Similar rules of change for brightness and chromatism of sapwood and heartwood were found with a strong relationship between α and △E (number of coefficients r = - 0.999 5 for both sapwood and heartwood). Color indexes b* of sapwood increased first at 170 ℃, 190 ℃ and then decreased at 210 ℃. Overall, temperature had a greater effect on color of Chinese fir boards than time with heat treatment affecting sapwood more than heartwood. [Ch, 4 tab. 18 ref.]关键词
木材学/杉木/热处理/颜色分类
农业科技引用本文复制引用
唐荣强,鲍滨福,李延军..热处理条件对杉木颜色变化的影响[J].浙江农林大学学报,2011,28(3):455-459,5.基金项目
浙江省科学技术重点项目(2006C12047) （2006C12047）
