Preparation process of mica-based pearlescent pigment with high weather resistance
A pearlescent pigment and preparation technology, which is applied in the treatment of inorganic pigments, fibrous fillers, dyed organic silicon compounds, etc., can solve the problems of increasing production costs, achieve the effects of reducing micropores, low production costs, and ensuring high dispersion
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[0043] Example 1:
[0044] The silver muscovite titanium pearlescent pigment (FWD103) was used as the transparent flake substrate to prepare the pearlescent pigment. The preparation steps are:
[0045] a. Weigh 40 g of silver muscovite titanium pearlescent pigment, put it into the reactor, add 450 mL of deionized water, stir and raise the temperature to 75° C., adjust the pH to 8.5 with an ammonia solution.
[0046] b. Mix absolute ethanol and methyl orthosilicate to contain SiO 2 The silicon precursor ethanol mixture with a mass fraction of 14%, 15 g of the silicon precursor ethanol mixture was pumped into the reactor with a constant flow pump, and the addition was completed within 2 hours, and then the reaction was continued for 1 hour to obtain the mother liquor.
[0047] c. The mother liquor was filtered, washed with deionized water 4 times, dried in an oven at 100°C for 6 hours, and then the pigment obtained after drying was put into the reactor again, and 450 mL of deionized ...
Example Embodiment
[0052] Example 2:
[0053] The silver muscovite titanium pearlescent pigment (FWD103) was used as the transparent flake substrate to prepare the pearlescent pigment. The preparation steps are:
[0054] a. Weigh 40 g of silver muscovite titanium pearlescent pigment, put it into the reactor, add 450 mL of deionized water, stir and raise the temperature to 85° C., and adjust the pH to 9 with ammonia solution.
[0055] b. Mix absolute ethanol and methyl orthosilicate to contain SiO 2 20 g of silicon precursor ethanol mixture with a mass fraction of 20%, 20 g of silicon precursor ethanol mixture was pumped into the reactor with a constant flow pump, the addition was completed within 2 hours, and then the reaction was continued for 1 hour to obtain mother liquor.
[0056] c. The mother liquor was filtered, washed with deionized water 4 times, dried in an oven at 100°C for 8 hours, and then the pigment obtained after drying was put into the reactor again, and 450 mL of deionized water was...
Example Embodiment
[0061] Example 3:
[0062] The silver muscovite titanium pearlescent pigment (FWD103) was used as the transparent flake substrate to prepare the pearlescent pigment. The preparation steps are:
[0063] a. Weigh 40 g of silver muscovite titanium pearlescent pigment, put it into the reactor, add 450 mL of deionized water, stir and raise the temperature to 80° C., adjust the pH value to 9.5 with ammonia solution.
[0064] b. Mix absolute ethanol and methyl orthosilicate to contain SiO 2 With a mass fraction of 18% silicon precursor ethanol mixture, 15 g of the silicon precursor ethanol mixture was pumped into the reactor with a constant flow pump, added within 2 hours, and then continued to react for 1 hour to obtain a mother liquor.
[0065] c. The mother liquor was filtered, washed with deionized water 4 times, dried in an oven at 100°C for 7 hours, and then the pigment obtained after drying was put into the reactor again, and 450 mL of deionized water was added, and the temperature...
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