高耐晒染料C.I.分散蓝77与C.I.分散黄54的复配性能分析

Analysis on the compatibility of high light fastness dyes C.I.Disperse Blue 77 and C.I.Disperse Yellow 54

针对绿色单色分散染料因品种匮乏、耐晒性能欠佳等缺点而难以满足特殊绿色纺织品高耐晒需求的问题,通过染料配伍性研究筛选出了2只耐晒性能优异的蓝色单色染料C.I.分散蓝77与黄色单色染料C.I.分散黄54。探究2只染料的复配性能,探讨2只染料不同的混合比例对涤纶纤维染色行为、染色牢度及耐光稳定性的影响。结果表明:2只染料在染色前期易出现染色不同步现象,但在达到染色平衡后可获得良好的染色同步性。提高复配体系中C.I.分散蓝77占比,当复配染料中C.I.分散黄54染色后织物的K/S值达到最大时,对应的染色用量由2%(owf)提升到了8%(owf);当C.I.分散蓝77与C.I.分散黄54的复配比例分别为1∶2、1∶3、1∶5及4∶1时,染色织物耐皂洗牢度和耐摩擦牢度均达到4~5级,耐升华牢度达到3级以上,耐光稳定性优于2只原色染料单独染色织物;当C.I.分散蓝77与C.I.分散黄54的复配比例为1∶5时,染色织物耐光稳定性优于大多数绿色商品分散染料,蓝色与黄色染料在涤纶织物上的褪色率仅为0.63%和0.99%。复配得到的绿色分散染料具有较高的耐光稳定性,能够应用于对耐晒牢度要求苛刻的特殊环境,具有良好的实际应用价值。

To address the problem that green monochrome disperse dyes are difficult to meet the needs of high light fastness of special green textiles due to the lack of varieties and poor light fastness,two monochrome dyes with excellent light fastness,namely C.I.Disperse Blue 77 and C.I.Disperse Yellow 54,were selected through the study of the compatibility of the dyes.The blending properties of the two selected dyes were investigated,and the effects of different mixing ratios of the two dyes on the dyeing behavior,dyeing fastness and light fastness of polyester fibers were discussed.The results show that the two dyes are prone to dyeing asynchrony in the early stage of dyeing,but good dyeing synchronization can be obtained after reaching the dyeing balance.When the proportion of C.I.Disperse Blue 77 in the complex system is increased,and the K/S value of the fabric dyed by C.I.Disperse Yellow 54 reaches its maximum,the dyeing concentration is increased from 2%(owf)to 8%(owf);when the mixing ratio of C.I.Disperse Blue 77 and C.I.Disperse Yellow 54 is 1∶2,1∶3,1∶5 and 4∶1,respectively,the soaping fastness and rubbing fastness of the dyed fabric both reach grades 4~5,the sublimation fastness is greater than grade 3,and the light stability is better than that of the fabric dyed with two primary dyes alone;when the mixing ratio of C.I.Disperse Blue 77 and C.I.Disperse Yellow 54 is 1∶5,the light stability of dyed fabrics is better than that of most green commodity disperse dyes,and the fading rate of blue and yellow dyes on polyester fabrics is only 0.63%and 0.99%,respectively.The mixed green disperse dyes have high light fastness stability and can be used in special environments with strict requirements for light fastness,and have good practical application value.