尾巨桉单板漂白工艺的研究  

Bleaching Technology for Eucalyptus urophylla×grandis Veneer

作　　者：彭万喜[1] 范智才[2] 李凯夫[3] 武书彬[4] 吴义强[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,长沙410004 [2]江门市林业局,广东江门529000 [3]华南农业大学林学院,广州510640 [4]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《木材工业》2007年第5期13-15,共3页China Wood Industry

基　　金：国家自然科学基金(30671634);中南林业科技大学青年科学研究基金重点项目(07012A);中南林业科技大学引进高层次人才科研启动基金(0652)

摘　　要：对尾巨桉单板水抽提后进行漂白正交试验。以漂白后单板的色差和白度为评价指标,推断出对漂白效果有显著影响的因素包括：温度、时间、硅酸钠质量分数、过氧化氢质量分数。较佳漂白工艺为：温度70℃,时间90～120min,过氧化氢质量分数5%,硅酸钠质量分数1.2%,pH值9～10。An orthogonal experiment was conducted to investigate the bleaching technology for water-extracted veneer of Eucalyptus urophylla × grandis. Taking the whiteness and color difference of the bleached veneer as indexes, the factors that could affect the bleaching results were evaluated, including bleaching temperature, time, and the concentration of Na2SiO3 and H2O2. Results found that the pH value of the bleaching solution only influenced the bleaching rate, and had almost no effect on the bleaching quality. The optimum parameters were determined as. 50% concentration of H2O2,1.2 % NazSiO3, bleaching solution pH of 9～10, and a temperature of 70 ℃ for a duration of 90～120 minutes.

关 键 词：尾巨桉 单板 漂白 过氧化氢 

分 类 号：TS652[轻工技术与工程]