阳离子改性剂WLS应用于棉纱线硫化染料染色

Application of Cationic Modified Agent WLS in Dyeing of Cotton Yarn by Sulfur Dyes

选用自制阳离子改性剂WLS对棉纱线进行改性,优化了改性工艺,研究了改性棉纱线在硫化染料色中染料用量、染料品种对其上染率和K/S值的影响,并测试了改性棉纱线的色牢度和匀染性。结果表明,阳离子改性剂WLS改性棉纱线的最佳工艺为:先将纱线放入含有氢氧化钠6 g/L、精练剂2 g/L、渗透剂JFC用量1 g/L的精练液中,在60℃处理15 min后,再加入阳离子改性剂WLS用量20 g/L,继续处理30min,浴比1∶30。棉纱线改性后采用硫化染料染色,纱线的K/S值和上染率均比未改性棉纱线硫化染料染色所得的有所提高,且提高程度根据染料用量和品种的不同而不同;改性棉纱线染色后匀染性好,但耐洗色牢度和耐摩擦色牢度稍有降低,需进一步研究改进。

Modified cotton yarn by self-made cationic modified agent WLS and optimized the modified process. The influence of the dyes dosage and the dyes types on exhaustion rate and K/S value of modified cotton yarn were analyzed, the color fastness and the levelling property of modified dyed cotton yarn were tested. The results show that the optimum modified process by self-made cationic modified agent WLS are： put the cotton yarn in the modi- fied solution with 6 g/L sodium hydroxide, 2 g/L scouting agent and 1 g/L penetrating agent JFC, the liquid ratio is 1：30, react under 60 ~C for 15 min, then put 20 g/L self-made cationic modified agent WLS for another 30 minute continuing reaction. It is found that compared with the unmodified dyed cotton yarn, the K/S value and the exhaustion rate of the modified cotton yarn dyed by sulfur dyes are improved, the improvement lever changes with the dosage of dyes and the dye types; although the levelling property is good, the washing fastness and the rubbing fastness decrease a little and need further research.