Preparation of stable-storage liquid disperse blue 79 and its application performance
To prepare nanoscale liquid disperse dyes with excellent dyeing performance and good storage performance that can replace powder disperse dyes in equal amounts,the liquidation of disperse blue 79 was carried out by the milling method,and the applicable anionic dispersants were screened out by comparing the dyeing performance of the liquid disperse dyes,and the range of HLB values of the nonionic dispersants as well as the optimal compounding ratios of the two dispersants were determined to obtain the optimal compounding combinations for the liquidation of disperse blue 79;the effect of pH on the stability of disperse blue 79 liquid was analyzed by centrifugal experiment,and the stable storage of the dye was investigated under the room temperature condition.The results showed that when the mass fraction of the dye cake in the system was 35％,the mass ratio of sodium lignosulfonate and fatty acid polyoxyethylene ester in the dispersant component was 2:1 and accounted for 8.75％of the mass fraction of the system,the liquid dispersed blue 79 with an average particle size of 196 nm and a strength of 150％was obtained.The dye diffusion performance,dispersing property,dispersing stability at high temperature,and the results of the test on the large-particle residual were all tested to be grade 5,and the centrifugal stability of the dye under pH 5 could reach 83.7％.Comparative studies on polyester dyeing showed that the liquid dispersed blue 79 after 180 d of storage at room temperature had similar dye lifting power,even dyeing and better dyeing rate as the dispersed dark blue HGL,the absorbance of the residual liquid after dyeing was 77.20％lower than that of the powdered dyes,and the COD value was reduced by 30.56％.The optimized liquid disperse dye preparation process and formulation can produce environmentally friendly liquid disperse blue 79 with dye strength and dyeing performance equivalent to that of commercial powder dyes and excellent storage stability.
liquid disperse dyesdispersant compoundingcentrifugal stabilitypolyester dyeingdisperse blue 79
NETL
NSTL
万方数据
