高色牢度聚氨酯染料的研究  

Polyurethane Dyestuff with High Color Fastness

作　　者：张悦[1] 强西怀[1] 牛泽 丁志文[3] 庞晓燕[3] 李希青 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021 [2]兴业皮革科技股份有限公司,福建晋江362261 [3]中国皮革和制鞋工业研究院,北京100016

出　　处：《中国皮革》2015年第3期22-25,共4页China Leather

基　　金：科技部技术开发项目(2013EG111216);国家自然基金项目(21376259);十二五科技支撑项目(2014BAE02B00);项目子课题(2014BAE02B02);"863项目(2013AA065701)"

摘　　要：首先以TDI和PPG-1000为原料合成聚氨酯预聚体,用DMPA扩链制备端异氰酸酯基团的聚氨酯,并用酸性红B染料对其进行封端改性处理,可以获得大分子聚氨酯染料。在制备过程中预聚反应最优试验参数为n（—OH）∶n（—NCO）=1∶4,加入DMPA扩链和用染料封端并控制体系总R值为1.2。通过红外光谱、激光粒度分析和色牢度测试等手段,对产物以及涂膜性能进行表征与研究,结果表明：经酰胺键（—CO—NH—）连接的染料-聚氨酯水性高分子可稳定存放,平均粒径在1.5~5.0μm;将这种聚氨酯染料在涂饰工序代替染料水使用,涂层的干湿摩擦色牢度均达到5级,在常规有机溶剂中无明显掉色现象。The polyurethane prepolymer was synthesized by TDI and PPG - 1000. Terminal - isocyanate - aqueous polyure- thane was synthesized with DMPA as chain - extender, and acid red B was used for blocking modification to obtain macromolecule polyurethane dyestuff. The optimum experimental parameters in process are as follows ： n （--OH） ： n （--NCO） = 1 ： 4, adding chain extender DMPA and dyestuff to adjust the value of R to l. 2. The polymer structure and film property were characterized by IR, laser particle size analysis and color fastness test. The results show that a stable dye - waterborne polyurethane polymer connected by amide bond is synthesized, which the average particle size is 1.5 μm - 5μm. The polyurethane dyestuff is used in finishing process instead of dye water, the dry ＆ wet rubbing fastness can reach 5 grade, and has no obvious fade in conventional organic solvents.

关 键 词：聚氨酯 酸性红B染料 聚氨酯染料 高色牢度 皮革涂饰 

分 类 号：TQ619[化学工程—精细化工]