A kind of preparation method of spherical cobalt blue material

A blue, spherical technology, applied in chemical instruments and methods, cobalt compounds, inorganic chemistry, etc., can solve the problems of scattering, not easy to deposit, etc., and achieve the effects of reducing wear, facilitating modulation and printing, and low friction

Inactive Publication Date: 2017-10-03
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the primary particles are spherical, they are not easy to deposit on the ceramic surface because they are too light (nano-scale) to fly away during the high-speed nozzle ejection process.

Method used

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  • A kind of preparation method of spherical cobalt blue material
  • A kind of preparation method of spherical cobalt blue material

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preparation example Construction

[0029] The invention relates to a preparation method of spherical cobalt blue material, which is to prepare spherical cobalt blue material powder by combining three methods of W / O type microemulsion (or emulsion)-uniform precipitation-co-precipitation; Cobalt chloride hexahydrate, aluminum chloride solution) and precipitant (urea solution) are added to the oil phase liquid to form a W / O type microemulsion (or emulsion), and the water surrounded by the microemulsion (or emulsion) is heated by an oil bath A chemical reaction takes place in the nucleus to produce spherical precipitates. The uniform precipitation method in which urea is used as a precipitant can control the size, agglomeration and particle size distribution of the primary nanoparticles; the co-precipitation method in which cobalt chloride and aluminum chloride are simultaneously precipitated can control the uniformity of the composition and structure of the secondary particles. The precipitate is distilled, dried ...

Embodiment 1

[0036] (1) Dissolve cobalt chloride hexahydrate and aluminum chloride in deionized water, press Co. 2+ The concentration is 0.6mol / L, Al 3+ The concentration is 1.4mol / L to prepare a mixed solution;

[0037] (2) Select urea as the precipitant, dissolve the urea with deionized water, and prepare a solution with a concentration of 10 mol / L;

[0038] (3) Mix 3ml of the mixed solution described in (1) with 3ml of the solution described in (2) to prepare an aqueous mother liquor;

[0039] (4) Dissolve 0.8ml of Triton X-100 and 0.4ml of n-hexanol in 20ml of liquid paraffin and stir for 30min to form a uniform solution;

[0040] (5) adding the aqueous phase mother liquor described in (3) into the solution described in (4), and emulsified at 10000 rpm for 5 minutes after ultrasonic wave for 10 minutes to form a uniform powder-white emulsion;

[0041] (6) The emulsion described in (5) was placed in an oil bath for reaction and kept stirring at a speed of 600 rpm, the reaction temper...

Embodiment 2

[0044] (1) Dissolve cobalt chloride hexahydrate and aluminum chloride in deionized water, press Co. 2+ The concentration is 0.015mol / L, Al 3+ The concentration is 0.03mol / L to prepare a mixed solution;

[0045] (2) Select urea as the precipitant, dissolve the urea with deionized water, and prepare a solution with a concentration of 0.5mol / L;

[0046] (3) Mix 5ml of the mixed solution described in (1) with 5ml of the solution described in (2) to prepare an aqueous mother liquor;

[0047] (4) Dissolve 2ml of Triton X-100 and 1ml of n-hexanol in 20ml of liquid paraffin and stir for 30min to form a uniform solution;

[0048] (5) The aqueous phase mother liquor described in (3) was added to the solution described in (4) at a rate of 0.2 ml / min with a burette, and a magnetic stirrer was used for stirring at a speed of 600 rpm during the dropwise addition; the titration was completed. Then continue stirring at the above speed for 2h to form a powdery white emulsion

[0049] (6) T...

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Abstract

The invention relates to a preparation method of a spherical cobalt blue pigment. The shape (spherical shape) of secondary agglomerated particles is controlled through utilizing W / O (Water in Oil) type emulsion, and the size, agglomeration and grain diameter distribution of primary nanoparticles are controlled through utilizing a homogeneous precipitation method; the uniformity of components and structure of the secondary agglomerated particles is controlled by utilizing a co-precipitation method, so that the cobalt blue pigment with spherical primary nanoparticles and spherical secondary agglomerated particles is synthesized in one step. Pigment microspheres prepared by the method provided by the invention have relatively great grain diameter and good sphericility degree and can meet process requirements of inkjet printing ceramic ink; a practical progress of applying homemade pigments to ceramic inkjet printing can be greatly accelerated.

Description

technical field [0001] The invention belongs to the technical field of fine ceramics, and particularly relates to a preparation method of spherical cobalt blue material. Background technique [0002] Blue is one of the three main primary colors, and many intermediate and compound colors are indispensable, so blue has become the main component of colorful colors. The cobalt blue material has bright color, good weather resistance and acid and alkali resistance, can adapt to various fluxes, and has a heat resistance of up to 1200 ° C, which is beyond the reach of ordinary color materials, and these excellent properties make it irreplaceable. product. cobalt blue (CoAl 2 O 4 ) is a blue ceramic pigment with an ordinary spinel structure, and the chemical formula of the spinel metal oxide is AB 2 O 4 or A0.B 2 0 3 , usually A is Zn 2+ , Ni 2+ , Fe 2+ , Mg 2+ , Mn 2+ , Co 2+ Equivalent divalent ion, B is Cr 3+ , Fe 3+ , Al 3+ Equivalent trivalent ions. for each AB ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00B82Y40/00
CPCC01G51/00C01P2004/03C01P2004/04C01P2004/32C01P2004/62C01P2004/64
Inventor 常鹰董仕节王辉虎何瑶万国建
Owner HUBEI UNIV OF TECH
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