T/R针织布活性翠蓝色花的防止

Solutions for color difference in reactive turquoise blue dyeing of T/R knits

从代碱剂SG-A2和纯碱溶液的pH值稳定性、染料性能、染色温度和固色温度等方面,对T/R针织布活性翠蓝染色匀染性进行探讨。结果表明,在相同染色条件下(除75℃染色和55℃固色),采用Na2CO3固色,织物匀染性和色牢度要优于代碱剂SG-A2,染色最佳工艺为65℃染色30 m in。代碱剂SG-A2和Na2CO3的最佳固色温度分别为55℃和60℃,固色30 m in,匀染效果好。

Factors affecting levelness of the T/R knitted dyeings with reactive turquoise blue were discussed, including pH value stability of alternative alkali SG-A2 and sodium carbonate solutions, dyes properties, dyeing temperature, fixing temperature and bath ratio. Results showed that levelness and color fastness with sodium carbonate fixation were better than those with alternative alkali SG-A2 at the same condition except dyeing at 75 ℃ and fixing at 55 ℃. The optimum dyeing process was determined as follows： dyeing at 65 ℃ for 30 min, fixing at 55 ℃ and 60 ℃ for 30 min with alternative alkali SG-A2 and Na2CO3 respectively.