杨木前处理对活性染料渗透性的影响  

Effect of Pretreated Poplar on the Permeability of Reactive Dyes

作　　者：邓洪[1] 廖齐[2] 刘元[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]中南林业科技大学应用化学研究所,湖南株洲412006

出　　处：《中南林学院学报》2006年第6期88-91,共4页Journal of Central South Forestry University

基　　金：中南林业科技大学青年科研基金项目"活性染料对木材染色工艺的研究"(04026B)

摘　　要：染液在木材中的移动和渗透是木材深度染色的关键．分别采用热水浸提、烧碱、过氧化氢等试剂对染色前的杨木进行染色前处理．实验结果表明：三种方法都可以不同程度提高杨木的染色深度，其中烧碱对提高染液渗透深度影响最大．较优前处理工艺条件为：烧碱用量8g／L，碱液温度90-95℃，前处理时间2h．与未进行前处理的试件对照,染料纵向渗透深度提高48.0％,横向渗透深度提高43．7％．Moving and permeating of dye liquor in the wood is important for dye level, Poplar was pretreated separately with hot water, sodium hydroxide and hydrogen peroxide, Results show that the permeating depth of dye liquor can he improved by all the three methods but the best is pretreating Poplar with sodium hydroxide. The most satisfactory effect can be obtained under the following pretreating conditions： NeOH at 8 g/L, a temperature between 90- 95℃ and a time of 2 hours. Compared with unpretreated samples, longitudinal and cross dispersion depths of dyestuffs were increased by 48.0% and 43.7 % respectively.

关 键 词：杨木 前处理 活性染料 染色 渗透性 

分 类 号：S781.43[农业科学—木材科学与技术] TS193.6[农业科学—林学]