杨木单板染色工艺与表面材色的关系  

Relationship between Surface Color of Veneer and Dyeing Technique for I-214 Popular

作　　者：周宇[1] 王金林[1] 

机构地区：[1]中国林业科学研究院,北京100091

出　　处：《东北林业大学学报》2006年第5期51-54,共4页Journal of Northeast Forestry University

基　　金："十五"国家836计划课题(2002AA245101);948项目(2002-44);中日国际合作项目(jica)。

摘　　要：试材为I-214杨木单板,以染料酸性大红GR和活性艳蓝KN-R为染化试剂,选取染液质量分数、染色温度、浸染时间为考察工艺因子,进行单板染色试验。通过多光源分光测色计测定染色单板的表面材色,用CIE(1976)L*a*b*Diagram对其进行颜色表征。结果表明:染色单板表面材色与着色度的变化与染液质量分数、染色温度、浸染时间的关系不同,高温下染色时染液质量分数增大,着色度(ΔE*ab)提高;染色时间延长,着色度有所增加或无明显变化;染色温度对表面染色影响较小。酸性染料和活性染料染色的单板材色变化幅度接近。Dyeing experiment was conducted to explore the effects of dyeing concentration, dyeing temperature and dyeing time on surface coloration of poplar veneer using poplar Ⅰ-214 as test material and acid red GR and reactive blue KN-R as reagents. The colors of veneers, bleached veneers and dyed veneers were measured by a multi-light source speetrophotometer, and were described with the CIE （1976） L^＊ a^＊ b^＊ Diagram system. Results showed that dyeing concentration, dyeing temperature and dyeing time have different effects on the surface coloration and the color grade of veneer. Under high temperatures the color grade enhances with dying concentration increasing, while it increases slightly or changes indistinctly with dyeing time prolonging. Dyeing temperature has little effect on surface coloration of veneer. The color change of veneers dyed by acid dyes is close to that by active dyes.

关 键 词：Ⅰ-214杨 单板 染料 染色 表面材色 着色度 

分 类 号：S781[农业科学—木材科学与技术]