117. Study on the Preparation of a Disperse Blue Ink-jet Ink for Textile Printing

A preparation method of disperse blue ink for textile ink-jet printing was discussed in this paper. The disperse blue paste was prepared by wet grinding process, and then, the moderate paste was used with different additives to manufacture the ink-jet printing ink. By testing the particle size, zeta potential, moisture retentivity of the ink, the effects of different types and dosage of the disperse dye, dispersant, and humectant on the properties of the ink-jet printing ink were analyzed. The results showed that the dispersant B had better dispersion for dye particle than the dispersant NNO; and when the content of the disperse dye was 7 %, and the content of the dispersant B was 14 % in the paste, the minimum average particle size was 197.2 nm and zeta potential was −42 mV. The optimal formula of the disperse blue ink for textile ink-jet printing was adding 25 % of homemade paste, 25 % of glycerol, 0.3 % antiseptic, and adding deionized water to 100 %. The particle size and zeta potential could meet the requirements of the ink-jet printing ink.