Process for preparing high-dispersibility ultrafine mica powder
A technology of ultra-fine mica powder and high dispersibility, which is applied in the direction of inorganic pigment treatment, fibrous filler, chemical instruments and methods, etc., and can solve the problems affecting the whiteness and purity of ultra-fine mica powder, mixing of sand and dust, and loss of adhesion In order to achieve good hand feel and slipperiness, low equipment cost and energy consumption, and reduce dust
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Embodiment 1
[0017] Weigh 40 g of natural muscovite powder with an average particle size of 2 The composition is 16% silicon precursor ethanol mixture. Use a constant flow pump to pump SiO with a mica substrate coating rate of 9% by weight. 2 The corresponding calculated amount of silicon precursor ethanol mixture is added within 1 h, and then the reaction is continued for 1 h. The suspension of the mother liquor was filtered, washed 4 times with deionized water, and dried in an oven at 100° C. for 6 hours to obtain highly dispersible ultrafine mica powder.
Embodiment 2
[0019] Weigh 40 g of synthetic mica powder with an average particle size of 2 The composition is 16% silicon precursor ethanol mixture. Use a constant flow pump to pump SiO with a mica substrate coating rate of 9% by weight. 2 The corresponding calculated amount of silicon precursor ethanol mixture is added within 1 h, and then the reaction is continued for 1 h. The suspension of the mother liquor was filtered, washed 4 times with deionized water, and dried in an oven at 100° C. for 7 hours to obtain highly dispersible ultrafine mica powder.
Embodiment 3
[0021] Weigh 200 g of natural muscovite powder with an average particle size of 2 The composition is 16% silicon precursor ethanol mixture. Use a constant flow pump to pump SiO with a mica substrate coating rate of 2% by weight. 2 The corresponding calculated amount of silicon precursor ethanol mixture is added within 1 h, and then the reaction is continued for 1 h. The suspension of the mother liquor was filtered, washed 4 times with deionized water, and dried in an oven at 100° C. for 8 hours to obtain highly dispersible ultrafine mica powder.
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