北京林业大学学报2001，Vol.23Issue(1)：59-64,6.
热处理过程中杉木压缩木材的材色及红外光谱
Change of brightness, chromatism and infra red spectra of compressed China fir wood during heat treatment
摘要
Abstract
In this study the brightness, chromatism and infra red spectra ofcompressed China fir wood during heat treatment in air or heat treatment in vacuum are studied. The water-saturated and boiled specimens of China fir （Cunninghamia lanceolata） are hot pressed with the average compression rate of 50%. Then they are heat treated in a common oven or in a vacuum oven, with the temperatures of treatment of 140，160，180，200，220℃, respectively. Then the brightness, chromatism, infra red spectra of the specimens are measured and discussed. In addition, some relationships between brightness, chromatism and recovery, weight loss and anti-swelling efficiency are deduced and discussed. The results are: (1) The brightness of the specimens will decrease and the chromatism will increase with the prolongation of time of heat treatment. Compared to heat treatment in vacuum, the specimens have less brightness and more chromatism after being heat treated in air, under the conditions of same temperature and time of heat treatment. (2) As far as the relationships between brightness, chromatism and recovery are concerned, there is little difference between heat treatment in air and heat treatment in vacuum. The fixation degree of compression set is closely related to the change degree of color. (3) As far as the relationships between brightness, chromatism and weight loss, anti-swelling efficiency are concerned, the more the weight loss or anti-swelling efficiency is, the less the brightness is, or the more the chromatism is. (4) The infra red spectra of specimens show that there are evident changes of waves at the wavelength of 1743, 1660 and 1605cm-1 which are attributed to the change of C=O in wood. So it is clear that at least hemicellulose, even lignin in wood cell chemically changes during heat treatment of compressed wood of China fir.关键词
杉木/压缩木材/热处理/明度/色差/红外光谱分类
农业科技引用本文复制引用
王洁瑛,赵广杰,中野隆人..热处理过程中杉木压缩木材的材色及红外光谱[J].北京林业大学学报,2001,23(1):59-64,6.基金项目
国家林业局开放实验室基金资助项目 （）
