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Highly dispersed and stably suspended fine cerium oxide-containing slurry and its preparation method

A high-dispersion technology of cerium oxide, applied in metal material coating process, coating and other directions, can solve problems such as constraints, achieve high productivity, simple and easy preparation method, and meet the needs of scientific research

Active Publication Date: 2018-07-06
内蒙古广禾元纳米高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As far as the applicant knows, there is no highly dispersed and stable suspended fine cerium oxide gel-containing slurry available for use, which to a certain extent restricts the use of fine cerium oxide, a rare earth modified material with excellent modification properties, in laser melting Applications in the technical field of particle surface modification

Method used

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  • Highly dispersed and stably suspended fine cerium oxide-containing slurry and its preparation method
  • Highly dispersed and stably suspended fine cerium oxide-containing slurry and its preparation method
  • Highly dispersed and stably suspended fine cerium oxide-containing slurry and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Select fine cerium oxide powder in a vacuum barrel with a particle size of 200 nanometers to prepare 100 ml of glue-containing slurry with a mass fraction of fine cerium oxide of 10%. When preparing colloid-containing water mixed solution, the ethanol used is reagent grade absolute ethanol, water is deionized water, and the added polyvinyl acetate emulsion is commercially available white latex, and its vinyl acetate content is greater than 20% to 40%. .

[0035] First, prepare the alcohol-water mixed solution according to the volume ratio of ethanol and water at 1:1. Secondly, measure the polyvinyl acetate emulsion with a volume fraction of 5ml and the alcohol-water mixed solution with a volume ratio of 1:1 of ethanol and water that have been prepared in 95ml, put the two into a container and mix them and stir for not less than 5 Minutes to obtain a mixed solution containing colloid alcohol and water, the density of which was measured to be 0.9 g / ml. Again, measure 10...

Embodiment 2

[0038]Select fine cerium oxide powder in a vacuum barrel with a particle size of 20 nanometers to prepare 100 ml of fine cerium oxide gel-containing slurry with a mass fraction of 10%. When preparing the colloid-containing water mixed solution, the raw materials used are all the same as in Example 1.

[0039] First, prepare the alcohol-water mixed solution according to the volume ratio of ethanol and water at 1:1. Secondly, measure the polyvinyl acetate emulsion with a volume fraction of 7ml and the alcohol-water mixed solution with a volume ratio of 1:1 of ethanol and water that have been prepared in 93ml, put the two into a container and mix them and stir for no less than 5 Minutes to obtain a mixed solution containing colloid alcohol and water, the density of which was measured to be 0.9 g / ml. Again, measure 10g of fine cerium oxide powder and 100ml of colloid-containing water mixed solution (its mass is 90g), mix the two in a container and stir for not less than 10 minute...

Embodiment 3

[0042] Select fine cerium oxide powder in a vacuum barrel with a particle size of 2 microns to prepare 100 ml of fine cerium oxide gel-containing slurry with a mass fraction of 10%. When preparing the colloid-containing water mixed solution, the raw materials used are all the same as in Example 1.

[0043] First, prepare the alcohol-water mixed solution according to the volume ratio of ethanol and water at 1:1. Secondly, measure the polyvinyl acetate emulsion with a volume fraction of 3ml and the alcohol-water mixed solution with a volume ratio of 1:1 of ethanol and water prepared by 97ml, put the two into a container and mix them and stir for not less than 5 Minutes to obtain a mixed solution containing colloid alcohol and water, the density of which was measured to be 0.9 g / ml. Again, measure 10g of fine cerium oxide powder and 100ml of colloid-containing water mixed solution (its mass is 90g), mix the two in a container and stir for not less than 10 minutes to obtain fine ...

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Abstract

The invention discloses highly dispersed and stably suspended emulsion-containing fine cerium oxide slurry and a preparation method thereof. The slurry is characterized by comprising, by mass, 5%-15% of fine cerium oxide powder and the balance emulsion-containing ethanol-water mixed solution. The emulsion-containing ethanol-water mixed solution is composed of water, ethanol and a polyvinyl acetate emulsion (commonly known as white emulsion), wherein the polyvinyl acetate emulsion accounts for 3%-7% of the emulsion-containing ethanol-water mixed solution by volume percent, and the balance ethanol-water mixed solution is composed of the ethanol and the water with the volume ratio being 1:1. The surface of a material to be modified is coated with the slurry, a fine cerium oxide particle preset layer with the high adhesion property and distributed in a dispersed mode can be formed on the surface of the material to be modified after the slurry is dried and cured, and the demand of introducing the fine powder to the field of particle surface modification technologies like laser melt injection can be met.

Description

technical field [0001] The invention relates to a fine cerium oxide slurry, in particular to a fine cerium oxide gel-containing slurry and a preparation method thereof, in particular to a fine cerium oxide gel-containing slurry with high dispersion and stable suspension and a preparation method thereof. Background technique [0002] Laser melt injection technology is a particle-enhanced surface modification technology that has attracted much attention in recent years. The basic principle is: while using high-energy-density laser to heat the surface of the modified workpiece to form a molten pool, the reinforced particles are introduced into the molten pool on the surface of the modified workpiece, and after condensation, a particle-enhanced surface layer is formed on the surface of the modified workpiece, thereby realizing Improve the wear resistance, corrosion resistance and other properties of the workpiece. At present, the introduction of powder in the laser melting proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 王宏宇崔万里庞婧黎向锋袁晓明黄舒阚鹏汪涵赵前邹承洪
Owner 内蒙古广禾元纳米高科技有限公司