A kind of preparation method of cobalt colored mica pearlescent pigment
A pearlescent pigment, mica technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve the problems of poor pigment saturation and gloss, achieve enhanced reflection effect, loose finished products, high polarizability Effect
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example 1
[0024] Take 0.12g europium trioxide, 0.10g cerium oxide, 0.10g neodymium oxide, add 50g mass fraction of 1% nitric acid solution, stir at 300r / min for 30min, get rare earth salt solution, take 0.5g cobalt nitrate, 1.0g nitric acid Aluminum, add 50mL of deionized water, stir at 300r / min for 20min, then add rare earth salt solution, continue to stir for 20min to obtain a coloring solution, take 5g of glass flakes, 5g of flaky alumina, 5g of flaky mica powder, add 300mL of deionized In water, stir at 300r / min for 20h in a constant temperature water bath at 40°C, adjust the pH to 9.0 with a 5% sodium carbonate solution by mass fraction, then raise the temperature to 80°C, add the coloring solution dropwise at 1g / min, and drop the mass fraction at the same time Use 10% ammonia water to keep the pH constant, let it stand for 30 minutes after the dropwise addition, filter to obtain the filter residue, wash the filter residue twice with deionized water, place it in a drying oven, and d...
example 2
[0026]Take 0.13g europium trioxide, 0.11g cerium oxide, 0.11g neodymium oxide, add 80g mass fraction to 1% nitric acid solution, stir at 350r / min for 35min, get rare earth salt solution, take 0.8g cobalt nitrate, 1.5g nitric acid Aluminum, add 80mL of deionized water, stir at 350r / min for 25min, then add rare earth salt solution, continue stirring for 25min to obtain a coloring solution, take 8g of glass flakes, 8g of flaky alumina, 8g of flaky mica powder, add 450mL of deionized In water, stir at 350r / min for 22h in a constant temperature water bath at 45°C, and adjust the pH to 9.2 with a 5% sodium carbonate solution by mass fraction, then raise the temperature to 85°C, add the coloring solution dropwise at 1g / min, and add the mass fraction at the same time 10% ammonia water was used to keep the pH constant. After the dropwise addition, let stand for 40 minutes, filter the filter residue, wash the filter residue twice with deionized water, put it in a drying oven, and dry it ...
example 3
[0028] Take 0.15g europium trioxide, 0.12g cerium oxide, 0.12g neodymium oxide, add 100g mass fraction of 1% nitric acid solution, stir at 400r / min for 40min, get rare earth salt solution, take 1.0g cobalt nitrate, 2.0g nitric acid Aluminum, add 100mL deionized water, stir at 400r / min for 30min, then add rare earth salt solution, continue stirring for 30min to obtain a coloring solution, take 10g glass flakes, 10g flaky alumina, 10g flaky mica powder, add 600mL deionized In water, stir at 400r / min for 24 hours in a constant temperature water bath at 50°C, and adjust the pH to 9.5 with a 5% sodium carbonate solution by mass fraction, then raise the temperature to 90°C, add the coloring solution dropwise at 2g / min, and add the mass fraction at the same time 10% ammonia water was used to keep the pH constant. After the dropwise addition, let it stand for 50 minutes, filter the filter residue, wash the filter residue 3 times with deionized water, place it in a drying oven, and dry ...
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