High-pigment-concentration digital direct-injection textile coating material ink and preparation method thereof

Abstract

The invention discloses high-pigment-concentration digital direct-injection textile coating material ink, which is prepared from the following raw materials by weight: 400-500 parts of pigment color paste, 150-200 parts of a polymer resin, 150-200 parts of a solvent, 10-30 parts of a dispersing agent, 20-40 parts of a curing agent, 1-10 parts of a bactericide, 2-10 parts of a pH value regulator, and 50-250 parts of deionized water, wherein the resin is an aqueous polyurethane resin, the solvent comprises one or a plurality of materials selected from diethylene glycol, propylene glycol, polyethylene glycol, glycerol, triethylene glycol, ethylene glycol and glycerol, and the dispersing agent is a high-molecular-weight block copolymer solution containing a pigment affinity group. The invention further provides a preparation method. According to the present invention, the polyol chain segment in the aqueous polyurethane resin endows the resin with good flexibility, the isocyanate chain segment endows the resin with good rubbing fastness, the aqueous polyurethane is used in ink to provide good adhesion between the ink and the fabric, and the ink is endowed with proper viscosity by combining the excellent flexibility and the solvent, so that the ink has good printing fluency.

Description

technical field [0001] The invention relates to the field of textile coating inks, in particular to a digital direct-injection textile coating ink, especially a digital direct-injection textile coating ink with high pigment concentration and a preparation method thereof. Background technique [0002] Digital direct-injection paint printing mainly uses digital direct-injection textile paint inks to print patterns or images directly on textiles through wide-format printers. Digital printing machines on the market are mainly based on Epson nozzles, Epson dual-nozzle printers, and four-nozzle printers cannot meet the requirements of digital printing for printing speed due to their slow printing speed. Therefore, in recent years, the Epson six-nozzle printer has been developed. The Epson six-nozzle printer has fast printing speed and high printing accuracy, which meets the speed requirements of digital printing. The printing speed can be compared with industrial nozzles, and the ...

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, there are few textile coating inks suitable for high-speed printing of Epson six-nozzle printers, and all of them have poor printing fluency, and the printing process requires frequent cleaning of the nozzles, wasting time and ink.

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