锦纶纤维酸性染料染色动力学对比研究

Study on acid dyestuff dyeing kinetics of polyamide 56fiber compared with polyamide 6 and 66

选用酸性蓝NHFS研究了3种锦纶纤维(生物基PA56、PA6和PA66)的染色动力学数据并进行了对比。通过测定上染速率曲线,计算出了扩散系数、染色速率常数及半染时间,探讨了锦纶56结构与染色性能的关系。结果表明:生物基锦纶56的扩散系数明显高于锦纶6和锦纶66,染色速率常数也明显高于锦纶6和锦纶66,半染时间最短;3种锦纶纤维在相同的染色温度下各自的半染时间染色后,锦纶56染色后的K/S值明显高于锦纶6、锦纶66。因此采用酸性蓝NHFS对锦纶56进行染色时,需要较短时间就可得到较深的颜色。

The kinetic data were investigated and compared based on three fibers （bio-based PA56,PA6 and PA66 ） dyeing with acid blue NHFS. The diffusion coefficient, dyeing rate constant transfer coefficient and half-dyeing time were measured through percentage of dyeing curve and dyeing rate of three polyamide fibers with Acid Blue NHFS were compared. The relationship structure and dyeing properties of PA56 was explored. Analysis shows that the dyeing rate constant transfer coefficient and diffusion coefficient of PA56 are significantly higher than PA6 and PA66 and the half-dyeing time is the shortest; The K/S values of PA56 are significantly higher than PA6 and PA66 when polyamide fibers are dyed at the same temperature. Therefore, it needs a short time to get a darker color when PA56 are dyed with acid blue NHFS.