【作者】 关鑫； 郭明辉；

【Author】 Guan Xin Guo Minghui (Collage of Material Science and Technology, Northeast Forestry University, Harbin, Heilongjiang, 150040)

【机构】 黑龙江省哈尔滨市东北林业大学材料科学与工程学院；

【摘要】 本试验以白桦单22板为试材,借助分光光度计和傅立叶红外分析仪(FTIR)观测和分析了经漂白处理和稀酸处理的白桦单板紫外光诱发变色过程中单板表面颜色和表面化学的变化。研究结果表明,稀酸处理对白桦单板紫外光诱发变色有促进作用,漂白处理有助于提高白桦单板的明度和黄蓝轴色品指数,单板表面颜色的变化则都与表面羰基、酚羟基、对醌和邻醌等基团的增减有关。更多还原

【Abstract】 The changes of the surface colors and chemical constituents of birch veneers treated by dilute acid or bleaching were investigated by spectrophotometer and FTIR. The results showed that dilute acid treatment accelerated induced discoloration and bleaching treatment enhanced the lightness and b* value, the changes of the surface colors related to carbonyl compounds, phenolic hydroxyl, paraquinones, ortho quinine and so on.更多还原