A kind of preparation method of aqueous self-dispersing nano organic pigment powder
A nano-organic and organic pigment technology, which is applied in the fields of fine chemical industry and material science, can solve problems such as agglomeration and large particles, and easy flocculation of organic pigment powder, and achieve uniform distribution, good dispersion effect, and simple production process.
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Embodiment 1
[0022] Weigh 2kg of dodecyltrimethylammonium chloride and dissolve it in 200kg of deionized water, stir with a stirrer for 15min, after the dispersant is completely dissolved, add 8kg of C.I Pigment Blue 15:3, and disperse on a high-speed disperser 2h, add 1.6kg tetraethyl orthosilicate and 1.6kg silane coupling agent A151, react for 24h, add 1.6kg sodium p-styrene sulfonate, heat up to 70°C and add 0.32kg sodium persulfate to react, react for 4h, use Centrifuge cleaning in a high-speed centrifuge, then transfer to an oven for drying, grind and pulverize the dried pigment powder with a colloid mill or a pulverizer, and filter with a 200-mesh filter to obtain a water-based self-dispersing nano-organic pigment powder.
Embodiment 2
[0024] Weigh 0.3kg of dodecyltrimethylammonium chloride and dissolve it in 200kg of deionized water, stir with a stirrer for 15min, after the dispersant is completely dissolved, add 1kg of C.I Pigment Blue 15:3, and place it on a high-speed disperser Disperse for 2 hours, add 0.2kg tetraethyl orthosilicate and 0.2kg silane coupling agent A151, react for 24 hours, add 0.2Kg sodium p-styrene sulfonate, heat up to 70°C and add 0.64kg sodium persulfate for reaction, react for 6 hours, Use a high-speed centrifuge for centrifugal cleaning, then transfer to an oven for drying, grind the dried pigment powder with a colloid mill or a pulverizer, and filter it with a 200-mesh filter to obtain a water-based self-dispersing nano-organic pigment powder.
Embodiment 3
[0026] Weigh 4.8kg of cetyltrimethylammonium chloride and dissolve it in 200kg of deionized water, stir with a stirrer for 15min, after the dispersant is completely dissolved, add 8kg of C.I Pigment Red 122, and disperse on a high-speed disperser for 2h , add 4kg tetraethyl orthosilicate and 4kg silane coupling agent A171, react for 24 hours, add 4Kg sodium p-styrene sulfonate, heat up to 70°C, add 0.32kg potassium persulfate to react, react for 4 hours, and use a high-speed centrifuge Centrifugal cleaning, then drying in an oven, grinding and pulverizing the dried pigment powder with a colloid mill or a pulverizer, and filtering with a 200-mesh filter to obtain a water-based self-dispersing nano-organic pigment powder.
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