Transparent nano-ferric oxide ink-jet color paste and preparation method thereof

[0040] Example 1

[0041] Add 38.3% deionized water, 0.2% 1,3,5-tris(2-hydroxyethyl)-s-triazine, pH adjuster I 0.3% dimethylethanolamine, dispersant I 15% TEGO755W according to the weight ratio in Table 1 , After stirring evenly at a speed of 600r/min in a high-speed disperser, add 35% transparent iron oxide red pigment powder, disperse at a high speed of 800r/min for 60min, and use a pump to transport the slurry to a horizontal sand mill. Coarse grinding, using 0.6 zirconium beads as the grinding medium, grinding until the particle size of the color paste measured by the fineness scraper is less than 5um, pump the semi-finished color paste into the dispersing tank, add the remaining dispersant II 3% TEGO755W, and put it in a high-speed disperser. After re-dispersing at 800r/min for 60min, the slurry was pumped to the rod-pin horizontal sand mill for fine grinding. At this time, 0.3um zirconium beads were used as the grinding medium, and the grinding was carried out until the size determined by the particle size analyzer. After the color paste particle size reaches D95<0.3μm, pump the color paste to the material tank, add pH adjuster II 0.222% dimethylethanolamine and 8% deionized water at the speed of 600r/min of the high-speed disperser, stir for 30min, After the viscosity and fineness are qualified, the water-based nano transparent iron oxide red inkjet color paste is obtained by filtering and packaging.

[0042] Example 2

[0043] Add 46.3% deionized water, 0.2% 1,3,5-tris(2-hydroxyethyl)-s-triazine, pH adjuster I 0.3% dimethylethanolamine, dispersant I 5% BYK154 according to the weight ratio in Table 1 Mix with 7% BYK190, stir evenly at a speed of 700r/min in a high-speed disperser, add 30% transparent iron oxide red pigment powder, disperse at a high speed of 700r/min for 75min, and pump the slurry to the horizontal Coarse grinding in a sand mill, using 0.7 zirconium beads as the grinding medium, grinding until the particle size of the color paste measured by the fineness scraper is less than 5um, pump the semi-finished color paste into the dispersing tank, add dispersant II 3% BYK190, After re-dispersing at 1000r/min for 75min in a high-speed disperser, pump the slurry to a pin-type horizontal sand mill for fine grinding. At this time, use 0.3um zirconium beads as the grinding medium, and grind until The color paste particle size determined by the particle size analyzer reaches D95<0.3μm, then pump the color paste to the material tank, and add pH adjuster II 0.2% dimethylethanolamine and 8% deionized water at the speed of 700r/min of the high-speed disperser. , stir for 40min, after the viscosity and fineness are qualified, filter and package to obtain water-based nano transparent iron oxide red inkjet color paste.

[0044] Example 3

[0045] According to the weight ratio of Table 1, add 46.3% deionized water, 0.2% 1,3,5-tris(2-hydroxyethyl)-s-triazine, pH adjuster I 0.3% dimethylethanolamine, dispersant I 5% Lubrizol The mixture of HPA320 and 7% Borchi Gen NA20 was stirred uniformly at a speed of 800r/min in a high-speed disperser, then 30% transparent iron oxide red pigment powder was added, and after dispersing at a high speed of 800r/min for 90min, the slurry was transported by a pump Go to a horizontal sand mill for rough grinding, use 0.8 zirconium beads as the grinding medium, grind until the particle size of the color paste measured by the fineness scraper is less than 5um, pump the semi-finished color paste to the dispersing tank, add dispersant Ⅱ3 %Lubrizol HPA320, after re-dispersing 90min at 1100r/min speed in high-speed disperser, use pump to transport color paste to rod-pin horizontal sand mill for fine grinding, at this time use 0.3um zirconium beads as grinding Medium, grind until the color paste particle size measured by particle size analyzer reaches D95<0.3μm, then pump the color paste to the material tank, add pH adjuster II 0.2% dimethylethanolamine and 8 % deionized water, stirring for 45min, after the viscosity and fineness are qualified, filter and package to obtain water-based nano transparent iron oxide red inkjet color paste.