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Slurry titanium dioxide and preparation method thereof

A technology of slurry and titanium dioxide, which is applied in the field of titanium dioxide, can solve the problems of poor storage stability of slurry titanium dioxide, impact on the application performance of titanium dioxide slurry, and influence on the dispersion of slurry titanium dioxide, so as to improve dispersion stability and Storage stability, reducing grinding and dispersing costs, and preventing agglomeration

Active Publication Date: 2022-03-01
LOMON BILLIONS GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the application and promotion of water slurry titanium dioxide, due to the poor storage stability of slurry titanium dioxide, slurry stratification will occur after a period of storage, and the bottom The titanium dioxide precipitate is hard and difficult to stir evenly. This part of the precipitate will seriously affect the dispersibility of the titanium dioxide slurry, which will have a greater impact on the application performance of the titanium dioxide slurry in coatings.

Method used

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  • Slurry titanium dioxide and preparation method thereof
  • Slurry titanium dioxide and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0064] The slurry titanium dioxide provided in this embodiment includes titanium dioxide and a dispersant coated with a first layer of coating and a second coating in sequence from the inside to the outside, wherein the film layer of the first coating is mainly composed of nano-sized zirconia Composed of zirconia and zirconia, the film layer of the second coating is mainly composed of nano-alumina and aluminum oxide.

[0065] The preparation method of the slurry titanium dioxide provided in this embodiment comprises the following steps:

[0066] (1) to ZrO 2 Add nano-zirconia with a particle size of 30 to 50 nm in the zirconium oxychloride solution with a mass fraction of 35.5%, and mix uniformly to obtain a mixed solution of nano-zirconia and zirconium oxychloride; 2 Calculated, the concentration of zirconium oxychloride solution is 100g / L; 2 Calculate the mass of zirconium oxychloride × 100% = 0.5%;

[0067] to Al 2 o 3 Add nano-alumina with a particle size of 30 to 60 ...

Embodiment 2

[0076] The slurry titanium dioxide provided in this embodiment includes titanium dioxide and a dispersant coated with a first layer of coating and a second layer of coating in sequence from the inside to the outside, wherein the film layer of the first layer of coating is mainly composed of nano-silica And silicon oxide, the film layer of the second coating is mainly composed of nano-alumina and aluminum oxide.

[0077] The preparation method of the slurry titanium dioxide provided in this embodiment comprises the following steps:

[0078] (1) to SiO 2 Add nano-silicon oxide with a particle size of 20 to 50 nm into the sodium silicate solution with a mass fraction of 25%, and mix uniformly to obtain a mixed solution of nano-silicon oxide and sodium silicate; 2 Calculated, the concentration of sodium silicate solution is 100g / L; 2 Calculate the mass of sodium silicate × 100% = 1.2%;

[0079] to Al 2 o3 Add nano-alumina with a particle size of 30 to 60 nm in the sodium metaa...

Embodiment 3

[0089] The slurry titanium dioxide provided in this embodiment includes titanium dioxide and a dispersant coated with a first layer of coating and a second coating in sequence from the inside to the outside, wherein the film layer of the first coating is mainly composed of nano-sized zirconia Composed of zirconia and zirconia, the film layer of the second coating is mainly composed of nano-alumina and aluminum oxide.

[0090] The preparation method of the slurry titanium dioxide provided in this embodiment comprises the following steps:

[0091] (1) to ZrO 2 Add nano-zirconia with a particle size of 30 to 50 nm in the zirconium oxychloride solution with a mass fraction of 35.5%, and mix uniformly to obtain a mixed solution of nano-zirconia and zirconium oxychloride; 2 Calculated, the concentration of zirconium oxychloride solution is 100g / L; 2 Calculate the mass of zirconium oxychloride × 100% = 0.8%;

[0092] to Al 2 o 3 Add nano-alumina with a particle size of 30 to 60 ...

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Abstract

The invention relates to the technical field of titanium dioxide, in particular to slurry titanium dioxide and a preparation method thereof. The slurry titanium dioxide comprises titanium dioxide, sodium hexametaphosphate and a dispersing agent which are sequentially coated with a first film layer and a second film layer from inside to outside; the first film layer comprises a zirconium coating layer or a silicon coating layer; the zirconium coating layer mainly comprises nano zirconium oxide and zirconium oxide; the silicon coating layer is mainly composed of nano silicon oxide and silicon oxide; the second film layer is mainly composed of nanometer aluminum oxide and aluminum oxide. The surface of titanium dioxide is coated with a specific coating layer, and particularly nano oxide is added into the coating layer, so that the number of micropores and the hydroxyl content of the surface of titanium dioxide can be increased, surface charges of titanium dioxide can be changed, and repulsive force among titanium dioxide particles and the binding degree between the particles and a dispersing agent can be enhanced; the heat treatment can reduce the isoelectric point of the inorganic coated titanium dioxide slurry and improve the dispersion stability and storage stability of the slurry titanium dioxide. And the slurry titanium dioxide can save the cost of secondary dispersion.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide, in particular to a slurry titanium dioxide and a preparation method thereof. Background technique [0002] Titanium dioxide is an important white pigment in paint production, and its main component is titanium dioxide. With the implementation of environmental protection policies, the paint industry is changing from oil-based to water-based, and the future market trend is to develop towards the application of titanium dioxide in the water-based field. [0003] In the application and promotion of water slurry titanium dioxide, due to the poor storage stability of slurry titanium dioxide, the slurry will be stratified after a period of storage, and the titanium dioxide precipitate at the bottom is hard and difficult to stir evenly. It will seriously affect the dispersibility of the titanium dioxide slurry, and then have a greater impact on the application performance of the titanium dioxid...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06
CPCC09C1/3661C01P2006/22C01P2004/62
Inventor 赵姗姗刘永波司华彬宋运萍李瑞瑞王永珊冯亚阳曹青喜郭永阳王欢欢刘晓洁
Owner LOMON BILLIONS GRP CO LTD
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