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Superfine blue ceramic pigment prepared from water-in-oil emulsion adopting solid particles as stabilizer and preparation method thereof

A water-in-oil type, solid particle technology, applied in the field of ceramic pigments, can solve the problems of reducing the particle size of pigments, air pollution, and little practical significance, and achieve the effects of reducing defects, good heat resistance, and simple operation

Active Publication Date: 2019-01-01
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the raw materials are configured into a solution in a certain proportion, urea is used as a precipitant, and the precipitate is obtained by the co-precipitation method, and then the finished product is obtained through grinding, washing and drying. time, and the wet grinding process reduces the generation of dust, but the sedimentation plus ball milling process still cannot control the shape, and the energy consumption is large, so the practical significance is not great
Some people also use surfactants as emulsion stabilizers to provide precipitation reaction vessels through the spherical droplets of the emulsion, so that the pigment can automatically form a spherical shape during the precipitation process, which reduces the intermediate step of ball milling, but the product is at the micron level; and the surface Active agents are basically organic components, which are not environmentally friendly; especially the stability of emulsions stabilized by surfactants is greatly affected by pH, temperature, etc., and it is difficult to guarantee the sphericity of pigment powders during the production process
Therefore, there are some problems in the above-mentioned methods, such as large energy consumption, air pollution, environmental protection and other shortcomings, which are not suitable for the general direction of sustainable development.

Method used

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  • Superfine blue ceramic pigment prepared from water-in-oil emulsion adopting solid particles as stabilizer and preparation method thereof
  • Superfine blue ceramic pigment prepared from water-in-oil emulsion adopting solid particles as stabilizer and preparation method thereof
  • Superfine blue ceramic pigment prepared from water-in-oil emulsion adopting solid particles as stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) In the same container, cobalt nitrate hexahydrate, aluminum nitrate nonahydrate, and urea are configured as a mixed solution according to the molar concentration ratio of 0.1:0.3:2 and stirred evenly; Add 4% solution by mass and stir evenly.

[0040] (2) The product obtained in (1) is mixed with 14ml: 6ml by volume ratio of oil (liquid paraffin containing nano silicon dioxide) to water (mixed solution with a molar concentration ratio of 0.1:0.3:2) and stirred evenly. Homogenizer 12000r / min emulsified for two minutes, then poured into the reaction kettle, sealed and placed in a constant temperature drying oven at 95°C for hydrothermal reaction for 4 hours.

[0041] (3) Take out the product obtained in (2) and wash it with anhydrous alcohol, then put it into a muffle furnace for calcination at 1000°C

[0042] Burn for 2 hours to get the final sample of blue ceramic pigment.

Embodiment 2

[0044] (1) In the same container, cobalt nitrate hexahydrate, aluminum nitrate nonahydrate, and urea are configured as a mixed solution according to the molar concentration ratio of 0.1:0.3:2.5 and stirred evenly; The mass mixing amount is 5% solution, and stir evenly.

[0045] (2) The product obtained in (1) is mixed with 12ml: 8ml by volume ratio of oil (liquid paraffin containing nano-silica) to water (molar concentration ratio is 0.1:0.3:2.5) and stirred evenly. Homogenizer 14000r / min emulsified for two minutes, then poured into the reaction kettle, sealed and placed in a constant temperature drying oven at 100°C for hydrothermal reaction for 4 hours.

[0046] (3) Take out the product obtained in (2) and wash it with anhydrous alcohol, then put it into a muffle furnace for calcination at 1000°C

[0047] Burn for 2 hours to get the final sample of blue ceramic pigment.

Embodiment 3

[0049](1) In the same container, cobalt nitrate hexahydrate, aluminum nitrate nonahydrate, and urea are configured as a mixed solution according to the molar concentration ratio of 0.1:0.3:3 and stirred evenly; The mass mixing amount is 6% solution, and stir evenly.

[0050] (2) The product obtained in (1) is mixed and stirred evenly by oil (liquid paraffin containing nano-silica) water (molar concentration ratio is 0.1:0.3:3 mixed solution) volume ratio of 10ml:10ml, and Homogenizer 16000r / min emulsified for two minutes, then poured into the reaction kettle, sealed and placed in a constant temperature drying oven for hydrothermal reaction at 105°C for 4 hours.

[0051] (3) The product obtained in (2) was taken out and washed with absolute alcohol, and then put into a muffle furnace for calcination at 1000° C. for 2 hours to obtain the final sample of the blue ceramic pigment.

[0052] The preparation process of the ultrafine blue ceramic pigment of all embodiments of the pre...

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Abstract

The invention relates to superfine blue ceramic pigment prepared from water-in-oil emulsion adopting solid particles as a stabilizer and a preparation method thereof. Salts with different mole concentrations, nanometer silica and liquid paraffin are adopted as raw materials to prepare the ceramic pigment through sintering after hydrothermal treatment. The color of the pigment can be adjusted by changing the percentage ratio of components, and the fineness of the pigment can be adjusted by changing the volume ratio of oil and water phases. Raw materials are substantially harmless and non-toxic.The preparation method is simple and does not need high-energy-consumption processes such as ball milling, the preparation time is shortened and the cost is saved. The pigment and the method have obvious economic benefit and environment protection benefit.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigments, and in particular relates to a method for preparing superfine blue ceramic pigments from a water-in-oil emulsion with solid particles as a stabilizer. Background technique [0002] In recent years, the application of blue pigments has attracted widespread attention from the outside world. Most of the research is on inorganic pigments of metal oxides, which make pigments develop color by doping colored metal transition ions or rare earth ions in the pigment matrix. At present, typical blue pigments include lake blue, cobalt blue, peacock blue and so on. However, due to the difference in processing technology, the uneven fineness and irregular shape of the pigment powder make the pigment unsuitable for coloring or the coloring effect is poor, which is not conducive to large-scale use and promotion. As we all know, the performance of materials depends on the structure of materials, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00
CPCC09C1/0009
Inventor 常鹰冯婷魏志顺谌援黄慧诚何鹏浩周志文来诗语米泽锐陈明慧
Owner HUBEI UNIV OF TECH