Method for preparing composite oxide polishing powder

A composite oxide and polishing powder technology, which is applied in the direction of polishing compositions containing abrasives, etc., to achieve the effects of increasing driving energy, avoiding air bubbles, and small particle size

Inactive Publication Date: 2015-04-08
包头市华辰稀土材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention does not provide specific instructions on the hardness of the polishing powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 355.1ml of 0.818mol / L cerium nitrate solution, 200g of fluorosilicic acid with a mass fraction of 25%, 0.75g of cetyltrimethylammonium bromide, 10.5g, 11.0g, and 5.0g of zirconium nitrate, aluminum nitrate, and titanium nitrate respectively . First, add ammonium bicarbonate to the cerium nitrate solution for precipitation under the condition of heating in a water bath, and add ammonium bicarbonate while stirring. After the precipitation is complete, the precipitate is suction filtered and washed with water to remove excess ammonium bicarbonate solution. Then add fluosilicic acid for fluorination. After the fluorination is completed, add an appropriate amount of oxalic acid solution for precipitation transformation. After the precipitation transformation is complete, add deionized water to adjust the slurry to form a solution. The above solution is spray-dried by a spray-drying apparatus, and the powder obtained by spray-drying is calcined. Pre-fire at 250°C for 2...

Embodiment 2

[0020] Take 355.1ml of 0.818mol / L cerium nitrate solution, 200g of fluorosilicic acid with a mass fraction of 25%, 0.75g of cetyltrimethylammonium bromide, 10.5g, 11.0g, and 5.0g of zirconium nitrate, aluminum nitrate, and titanium nitrate respectively . First, add ammonium bicarbonate to the cerium nitrate solution for precipitation under the condition of heating in a water bath, and add ammonium bicarbonate while stirring. After the precipitation is complete, the precipitate is suction filtered and washed with water to remove excess ammonium bicarbonate solution. Then add fluosilicic acid for fluorination. After the fluorination is completed, add an appropriate amount of oxalic acid solution for precipitation transformation. After the precipitation transformation is complete, add deionized water to adjust the slurry to form a solution. The above solution is spray-dried by a spray-drying apparatus, and the powder obtained by spray-drying is calcined. Pre-calcined at 300°C f...

Embodiment 3

[0022] Take 468.7ml of 0.818mol / L cerium nitrate solution, 300g of fluorosilicic acid with a mass fraction of 25%, and 1.0g of cetyltrimethylammonium bromide. Each of zirconium nitrate, aluminum nitrate, and titanium nitrate is 3.5g, 7.5g, and 4.5g. First, add ammonium bicarbonate to the cerium nitrate solution for precipitation under the condition of heating in a water bath, and add ammonium bicarbonate while stirring. After the precipitation is complete, the precipitate is suction filtered and washed with water to remove excess ammonium bicarbonate solution. Then add fluosilicic acid for fluorination. After the fluorination is completed, add an appropriate amount of oxalic acid solution for precipitation transformation. After the precipitation transformation is complete, add deionized water to adjust the slurry to form a solution. The above solution is spray-dried by a spray-drying apparatus, and the powder obtained by spray-drying is calcined. Pre-calcined at 350°C for 4 ...

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PUM

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Abstract

The invention discloses a method for preparing composite oxide polishing powder. The polishing powder serves as a grinding material and mainly comprises cerium oxide, silicon oxide, zirconium oxide, aluminum oxide and titanium oxide, wherein the cerium oxide and other oxides have good synergetic polishing effect. In the composite oxide polishing powder, the content of SiO2 is equal to 20-40 percent, the content of CeO2 is equal to 75-90 percent, and the amount of three oxide additives such as ZrO2, Al2O3 and TiO2 is 5-10 percent. In order to improve the polishing effect, a dispersing agent is added into the synthesis and preparation process, and the prepared composite oxide polishing powder can achieve an excellent polishing and grinding effect. The composite oxide polishing powder is prepared by the steps of precipitating, performing suction filtration, washing, performing precipitation transformation, size mixing, uniformly stirring and mixing, performing spray drying and roasting. The composite oxide polishing powder has the advantages of high suspension property and dispersity, small particle size, narrow particle size, large erosion quantity and high surface smoothness of the polished and ground glass.

Description

technical field [0001] The invention belongs to the field of inorganic powder preparation, and in particular relates to a preparation method of composite oxide polishing powder. The prepared composite oxide polishing powder has high polishing precision, extremely small central particle diameter and narrow particle size distribution. Background technique [0002] Traditional chemical mechanical abrasives include ultrafine inorganic particles such as silicon oxide, aluminum oxide, and cerium oxide. Silicon oxide polishing powder has the advantages of easy preparation, low hardness, and good slurry dispersion, but its polishing efficiency is low; cerium-based rare earth polishing powder has the advantages of fast polishing speed, high polishing precision, easy cleaning and low pollution, etc., but its price More expensive, poor dispersion, easy to agglomerate; Al 2 o 3 Polishing powder has high hardness and high polishing rate, but it is easy to cause surface scratches. With...

Claims

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Application Information

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IPC IPC(8): C09G1/02
CPCC09G1/02
Inventor 李梅周国祥张晓伟张存瑞韩磊柳召刚王觅堂
Owner 包头市华辰稀土材料有限公司
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