光稳定剂在聚氨酯仿皮织物上的应用  

Application of light stabilizers on polyurethane leather fabrics

作　　者：安源[1] 陈佳美[1] 唐族平 金曦 郑今欢[1,3] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018 [2]浙江皮意纺织有限公司,浙江嘉兴314400 [3]浙江理工大学生态染整技术教育部工程研究中心,浙江杭州310018

出　　处：《纺织学报》2017年第1期88-93,共6页Journal of Textile Research

基　　金：国家科技支撑计划项目(2014BAF06B03)

摘　　要：为提高聚氨酯仿皮织物的抗黄变性,在分析紫外光对聚氨酯涂层膜性能和表面形貌影响的基础上,研究光稳定剂对聚氨酯仿皮织物抗黄变性的作用,通过色差值对织物变色等级进行评价分析,并确定光稳定剂最佳质量配比;探讨转移涂层中烫印温度、烫印时间和后道水洗、热定形等工序对聚氨酯仿皮织物抗黄变效果的影响,并优化了工艺条件。结果表明:聚氨酯仿皮织物中添加光稳定剂可显著降低光刻蚀老化速率,提高抗黄变性能;当受阻胺光稳定剂LS-622与紫外线吸收剂UV-531质量比为1∶3,质量分数为2.0%(对浆料重),烫印温度为100℃,烫印时间为30 s时,棕色聚氨酯仿皮织物的抗黄变效果优异,变色等级提高到2级,变色轻微。In order to improve the yellowing resistance of polyurethane leather fabrics, the influence of light stabilizers on the yellowing resistance of polyurethane leather fabrics was investigated by analyzing the influence of UV light on the performance and appearance of polyurethane coating film. In addition, the optimized compound admixture ratio of light stabilizers depending on the analysis and evaluation of influence of color difference value on the level of leather color change was obtained. The related process conditions were optimized by studying the influence of processes such as stamping temperature, stamping time, washing and heat setting on the yellowing resistance of polyurethane leather fabrics. The results indicate that by adding light stabilizers into polyurethane leather fabrics, the aging rate of photoengraving could be dramatically reduced and the yellowing resistance could be enhanced. When the mass of hindered amine light stabilizer LS-622 is one third of that of UV absorber UV-531, the weight is 2.0%, the stamping temperature is 100 ℃ and the stamping time is 30 s, the anti-yellowing effect of brown polyurethane leather fabrics is optimized, and the level of color change is increased to level 2 with slight color change.

关 键 词：聚氨酯 仿皮织物 黄变 涂层 光稳定剂 

分 类 号：TS195[轻工技术与工程—纺织化学与染整工程]