A kind of preparation method of nano zirconium dioxide

A technology of nano-zirconia and preparation steps, applied in zirconia, nanotechnology and other directions, can solve the problems of poor regularity, easy agglomeration, increase in particle size of nano-zirconia, and achieve improved regularity and finer particle size. , the effect of particle size reduction

Active Publication Date: 2021-01-29
乐昌东锆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: aiming at the problem that the traditional nano-zirconia powder has a high surface energy and is easy to agglomerate during the preparation process, resulting in an increase in the particle size of the nano-zirconia and poor regularity. A kind of preparation method of nano zirconium dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020]Mix tetraethylorthosilicate and absolute ethanol in a beaker at a mass ratio of 1:7, and add polyvinylpyrrolidone 1.0 times the mass of tetraethylorthosilicate to the beaker at a temperature of 55°C and a rotation speed of 380r Under the condition of stirring and mixing for 40 minutes, the tetraethyl orthosilicate mixture was obtained. The mass fraction of 15% hydrochloric acid was 0.04 times the mass of the tetraethyl orthosilicate mixture and dropped into the orthosilic acid at a rate of 8 mL / min. In the tetraethyl ester mixture, under the conditions of a temperature of 45°C and a rotating speed of 320r / min, the precursor solution is obtained after stirring and reacting for 3 hours. After the precursor solution is electrospun, the film is uncovered to obtain a composite nanofiber membrane; The nanofiber membrane is moved into the carbonization furnace to raise the temperature to the carbonization temperature at a heating rate of 6°C / min, and after the carbonization treatment...

example 2

[0022]Mix tetraethylorthosilicate and absolute ethanol in a beaker at a mass ratio of 1:7, and add polyvinylpyrrolidone 1.0 times the mass of tetraethylorthosilicate to the beaker at a temperature of 55°C and a rotation speed of 380r Under the condition of stirring and mixing for 40 minutes, the tetraethyl orthosilicate mixture was obtained. The mass fraction of 15% hydrochloric acid was 0.04 times the mass of the tetraethyl orthosilicate mixture and dropped into orthosilicic acid at a rate of 8 mL / min. In the tetraethyl ester mixture, under the conditions of a temperature of 45°C and a rotation speed of 320r / min, the precursor solution is obtained after the reaction is stirred for 3 hours. After the precursor solution is electrospun, the film is uncovered to obtain a composite nanofiber membrane; The nanofiber membrane and the fatty acid were mixed at a mass ratio of 1:12, and after standing at room temperature for 24 hours, filtered to obtain a modified nanofiber membrane; the met...

example 3

[0024]Mix tetraethylorthosilicate and absolute ethanol in a beaker at a mass ratio of 1:7, and add polyvinylpyrrolidone 1.0 times the mass of tetraethylorthosilicate to the beaker at a temperature of 55°C and a rotation speed of 380r Under the condition of stirring and mixing for 40 minutes, the tetraethyl orthosilicate mixture was obtained. The mass fraction of 15% hydrochloric acid was 0.04 times the mass of the tetraethyl orthosilicate mixture and dropped into orthosilicic acid at a rate of 8 mL / min. In the tetraethyl ester mixture, under the conditions of a temperature of 45°C and a rotation speed of 320r / min, the precursor solution is obtained after the reaction is stirred for 3 hours. After the precursor solution is electrospun, the film is uncovered to obtain a composite nanofiber membrane; The nanofiber membrane is moved into the carbonization furnace and heated to the carbonization temperature at a heating rate of 6°C / min, and after the carbonization treatment is kept for 6...

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Abstract

The invention discloses a preparation method of nano zirconium dioxide, which belongs to the technical field of nano material preparation. Mix the zirconium alkoxide mixture with ethylene glycol at a mass ratio of 1:1 to 2:1, and add the modified nanofiber membrane 0.2 to 0.4 times the mass of the zirconium alkoxide mixture and 0.01 to 0.02 times the mass of the zirconium alkoxide mixture Sulfuric acid, after stirring and reacting, filtering, washing, and drying to obtain nano-zirconia blanks; calcining nano-zirconia blanks to obtain pretreated nano-zirconia, and pre-treated nano-zirconia and sodium hydroxide solution according to the mass ratio 1:5~1:10 mixing, filtering, washing until the washing liquid is neutral, drying to obtain nano zirconia. The particle size distribution range of nano zirconium dioxide obtained in the present invention is narrow, and has a small size, so it has excellent dispersibility and is not easy to agglomerate in the preparation process.

Description

Technical field[0001]The invention discloses a preparation method of nano zirconium dioxide and belongs to the technical field of nano material preparation.Background technique[0002]Conventional zirconium dioxide has small specific surface and underdeveloped voids, which limits its performance and application. Nano zirconium dioxide overcomes these shortcomings. Nano-zirconium dioxide has high chemical stability, excellent corrosion resistance, high melting point, high resistivity, high refractive index, low thermal expansion coefficient and other properties, making it an important high temperature resistant material, ceramic insulating material, etc. Because of its many excellent properties, it has attracted the attention of many scholars in recent years, and has been well applied and developed.[0003]Nano zirconia has the ability to resist chemical erosion and microbial erosion, and also has acidic, alkaline, oxidizing and reducing metal oxides. It has good dispersibility, good the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G25/02B82Y40/00
CPCB82Y40/00C01G25/02C01P2004/64
Inventor 周荣刘侠朱东东
Owner 乐昌东锆新材料有限公司
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