学术
杨木和樟子松单板的光变色规律
郭洪武[1,2] 王金林[2] 李春生[2] 闫昊鹏[2]
[1]北京林业大学材料科学与技术学院,北京100083 [2]中国林科院木材工业研究所；国家林业局木材科学与技术重点实验室,北京100091
摘 要:
以杨木和樟子松单板为试材，利用氙光衰减仪进行光辐射试验，分析其光变色规律，并进行耐光性能评价。结果表明：木材受光辐射易发生变色，主要表现为明度指数L^＊降低，色度指数a^＊和b^＊上升。其中：樟子松单板的色度指数b^＊变化明显，针叶树材樟子松的光变色度大于阔叶树材。[著者文摘]
文章出处:
《木材工业》-2008年22卷1期,33 -29-30,33页
栏目信息:
文献标识码:
A
文章编号:
1001-8654（2008）01-0029-02
相关文章:
Color Changes of Poplar and Scots Pine Veneer during Accelerated Aging using Light Radiation
GUO Hong-wu, WANG Jin-lin, LI Chun-sheng, YAN Hao-Peng （1. The college of material science and technology, Beijing Forestry University, Beijing 100083, China; 2. Research Institute of Wood Industry, Chinese Academy of Forestry; Key Laboratory of wood Science and Technology of State Forestry Administration,Beijing 100091, China）
Abstract:
The surface of wood composites undergoes photochemical degradation when exposed to ultraviolet and sunlight radiation. This degradation is usually accomplished by the negative effects of color instability and visual appearance. In this study, radiation from a Xenon-Lamp Attenuation Instrument was used to accelerate the color fade of Poplar and Scots Pine veneer. During the testing, color characteristics of lightness （L^＊） and chromaticity coordinates （a^＊ and b^＊ ） were monitored periodically. The observations of the decreasing lightness and increasing chromaticity coordinates showed that the surface color of the wood veneer fade when exposed to light radiation. It was found that under the same amount of the light radiation the Scots Pine veneer changed its color more quickly than the Poplar veneer.[著者文摘]
Key words:
Poplar; Scots pine; veneer; color stability; light radiation
基金资助:
“十五”国家科技攻关计划子课题（2006BAD18B06）.
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