Salt-free dyeing of silk fabrics with reactive dyes

Silk fabrics were modified with cationic modifier,some cationic groups were introduced to the surface or inter of silk fabrics.The dyeing and fixing rate of silk fabrics with reactive dyeing were improved.It was shown that the optimum process of silk modifying: the concentration of modifier 10?g/L,time 30min,temperature 60?℃ and modified pH 9.0.The best dyeing process of salt-free dyeing for silk with reactive dyes Argazol yellow N-SR: boiling temperature,dyeing holding time 50min,dyeing pH 7.5.After modified,silk fabrics achieved good dyeing fastness,the depth of dyeing was also increased.