Research on the dyeing process and mechanism of acrylic yarn
Three dyes,Nippon kayaku Red GRL-ED,Yellow 3RL-ED,and Blue GSL-ED,are utilized for staining acrylic yarns.The impacts of the pH of the dyeing solution,dyeing temperature,and bath ratio on the K/S value of acrylic yarn dyeing are investigated through single-factor experiments.Besides,the dyeing rate curve,dyeing improvement force,and soap fastness are analyzed.The results demonstrate that the K/S value of acrylic yarn dyeing is the highest and the dyeing effect is the best,when pH of dyeing solution is 5,dyeing temperature is 98℃and bath ratio is 1∶10.Under the optimal process conditions,the acrylic yarn dyed with the three dyes exhibits excellent soaping fastness.The dyeing rate curve and lifting force curve of acrylic yarn dyed with these three dyes display similar trends.It indicates good compatibili-ty suitable for color matching dyeing.
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