改善Lyocell纤维原纤化的连续式无盐轧染工艺  

Continuous salt-free pad dyeing process to improve the fibrillation of Lyocell fibers

作　　者：唐奇 何奕 郑今欢[1] 王成龙[1] 王直成 柴丽琴 TANG Qi;HE Yi;ZHENG Jinhuan;WANG Chenglong;WANG Zhicheng;CHAI Liqin(Engineering Research Center for Eco-Dyeing&Finishing of Textiles,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China;Huzhou Beiheng Textile Co.,Ltd.,Huzhou 313021,China)

机构地区：[1]浙江理工大学生态染整技术教育部工程研究中心,杭州310018 [2]湖州倍亨纺织有限公司,浙江湖州313021

出　　处：《现代纺织技术》2023年第6期9-16,共8页Advanced Textile Technology

基　　金：浙江省基础公益研究计划项目(LGC20E030001,LGF21E030004)。

摘　　要：为解决Lyocell织物活性染料染色无机盐用量大、纤维原纤化等问题,分析了Lyocell织物的连续式无盐轧染染色技术,探讨了焙烘温度、焙烘时间、浸轧次数、碱剂及尿素用量对染色性能的影响,并与传统浸染工艺进行了比较。结果表明:Lyocell织物活性染料轧-烘-焙最佳的染色配方和工艺为碱剂25 g L,尿素60 g L,二浸二轧,160℃下焙烘2 min。相比传统浸染工艺,连续式无盐轧染染色可获得更高的染色深度,且改善了原纤化程度。Lyocell fibers are regenerated cellulose fibers.In addition to the advantages of hygroscopic property,good luster and comfortable wearing,Lyocell fibers also have better wet and dry strength than other regenerated cellulose fibers.However,Lyocell fibers are prone to fibrination,which limits their application in textile applications.The reactive dye is one of the most commonly used dyes for cellulose fiber dyeing,with advantages of simple application,cheap price and bright color,but in the process of immersion dyeing,to promote reactive dye dyeing,a large number of inorganic salts are often added in the dyeing solution.Therefore,there are high energy consumption,complex and variable dyeing wastewater composition,deep color,alkaline and expensive treatment costs and many other drawbacks.In this paper,the continuous salt-free rolling dyeing process of Lyocell fiber fabrics with reactive dyes was systematically studied,which not only improved the dyeing property and reduced the emission of inorganic salts,but also improved the fibrillation degree of Lyocell fibers and effectively improved the quality of Tencel fabrics.The effects of dyeing and fixing process and formula(baking temperature,baking time,dipping times,dosage of alkali and urea)on dyeing properties(K S value and fixing rate)of fabrics were discussed.The dyeing properties and fibrination degree of fabrics were compared with those of traditional dyeing process.The results show that the optimized rolling,baking and dyeing formula and process of the Lyocell fabric require alkali of 25 g L,urea of 60 g L,and a baking time of 2 min at 160℃after twice dipping and twice padding.The three dyes of Br Red CA,Br Yellow CA and Blue CA have good dyeing effect,and the color fixing rates are 76.98%,67.48%,77.15%,and K S values are 21.87,10.87,15.85,respectively.Compared with the traditional immersion dyeing process,the continuous salt-free rolling dyeing can obtain higher dyeing depth,and the K S values of the three dyes are increased by 28.10%,5.23%and 6.20%,respectiv

关 键 词：LYOCELL织物 活性染料 轧染 无盐 原纤化 

分 类 号：TS190.6[轻工技术与工程—纺织化学与染整工程]