High utilization dyeing mechanism of cotton reactive dyeing and its application
Cotton fabric is modified with cationic polyepichlorohydrin amine and then dyed with neutral fixed reactive dyes to achieve salt free and high dye uptake dyeing of cotton fabric.The results show that under the conditions of modifier of 3％,NaOH of 5 g/L,and modification at 60 ℃ for 25 min,the potential of cotton fabric in a solution with pH value of 7 is about 32 mV;The content of N element increases;The final dye uptake can exceed 95％,and the dyed cotton fabric has good color fastness.The research results indicate that cationic modified cotton fabrics can achieve neutral,salt free,and high utilization reactive dye dyeing.
NETL
NSTL
万方数据
