Preparation method of nanometer zirconium dioxide

A technology of nano-zirconia and preparation steps, applied in zirconia, nanotechnology and other directions, can solve the problems of poor regularity, increased particle size of nano-zirconia, easy agglomeration, etc., and achieves improved regularity and reduced particle size. , the effect of particle size refinement

Active Publication Date: 2018-11-23
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 tetraethyl orthosilicate and absolute ethanol in a beaker at a mass ratio of 1:7, and add polyvinylpyrrolidone 1.0 times the mass of tetraethyl orthosilicate to the beaker at a temperature of 55°C and a rotation speed of 380r Under the condition of stirring and mixing for 40 min, tetraethyl orthosilicate mixture was obtained, and hydrochloric acid with a mass fraction of 0.04 times the mass of tetraethyl orthosilicate mixture was dropped into orthosilicate at a rate of 8mL / min. In the tetraethyl ester mixture, under the conditions of temperature 45°C and rotation speed 320r / min, the precursor solution was obtained after stirring and reacting for 3 hours. After the precursor solution was subjected to electrospinning, the film was peeled off to obtain a composite nanofiber film; Move the nanofiber membrane into the carbonization furnace to raise the temperature to the carbonization temperature at a heating rate of 6°C / min, and keep it warm for 6 hours. After cooling do...

example 2

[0022]Mix tetraethyl orthosilicate and absolute ethanol in a beaker at a mass ratio of 1:7, and add polyvinylpyrrolidone 1.0 times the mass of tetraethyl orthosilicate to the beaker at a temperature of 55°C and a rotation speed of 380r Under the condition of stirring and mixing for 40 min, tetraethyl orthosilicate mixture was obtained, and hydrochloric acid with a mass fraction of 0.04 times the mass of tetraethyl orthosilicate mixture was dropped into orthosilicate at a rate of 8mL / min. In the tetraethyl ester mixture, under the conditions of temperature 45°C and rotation speed 320r / min, the precursor solution was obtained after stirring and reacting for 3 hours. After the precursor solution was subjected to electrospinning, the film was peeled off to obtain a composite nanofiber film; Mix the nanofibrous membrane and fatty acid at a mass ratio of 1:12, let it stand at room temperature for 24 hours, and filter to obtain a modified nanofiber membrane; mix metal sodium and ethyl...

example 3

[0024] Mix tetraethyl orthosilicate and absolute ethanol in a beaker at a mass ratio of 1:7, and add polyvinylpyrrolidone 1.0 times the mass of tetraethyl orthosilicate to the beaker at a temperature of 55°C and a rotation speed of 380r Under the condition of stirring and mixing for 40 min, tetraethyl orthosilicate mixture was obtained, and hydrochloric acid with a mass fraction of 0.04 times the mass of tetraethyl orthosilicate mixture was dropped into orthosilicate at a rate of 8mL / min. In the tetraethyl ester mixture, under the conditions of temperature 45°C and rotation speed 320r / min, the precursor solution was obtained after stirring and reacting for 3 hours. After the precursor solution was subjected to electrospinning, the film was peeled off to obtain a composite nanofiber film; Move the nanofiber membrane into the carbonization furnace to raise the temperature to the carbonization temperature at a heating rate of 6°C / min, and keep it warm for 6 hours. After cooling do...

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PUM

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Abstract

The invention discloses a preparation method of nanometer zirconium dioxide, and belongs to the technical field of preparation of nanometer materials. The preparation method comprises the following steps of mixing zirconium alcohol salt mixture and ethylene glycol according to a mass ratio of 1:1 to 2:1, adding a modified nanometer fiber film and concentrated sulfuric acid, stirring to react, filtering, washing, and drying, so as to obtain a blank of the nanometer zirconium dioxide, wherein the mass of modified nanometer fiber film is equal to 0.2 to 0.4 time of mass of the zirconium alcohol salt mixture, and the mass of concentrated sulfuric acid is equal to 0.01 to 0.02 time of mass of the zirconium alcohol salt mixture; calcining the blank of the nanometer zirconium dioxide to obtain the pretreated nanometer zirconium dioxide, mixing the pretreated nanometer zirconium dioxide and a sodium hydroxide solution according to a mass ratio of 1:5 to 1:10, filtering, washing until the washing solution is neutral, and drying, so as to obtain the nanometer zirconium dioxide. The prepared nanometer zirconium dioxide has the advantages that the particle size distribution range is narrower,the size is smaller, the dispersing property is excellent, and the easiness in agglomeration in the preparation process is avoided.

Description

technical field [0001] The invention discloses a preparation method of nano zirconium dioxide, which belongs to the technical field of nano material preparation. Background technique [0002] Conventional zirconia has a small specific surface and underdeveloped voids, which limit its performance and application. Nano zirconia overcomes these shortcomings. Nano zirconia 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 zirconium dioxide has the ability to resist chemical erosion and microbial erosion, and has acidic, alkaline, oxidizing and reducing metal oxides. It has good dispersion, good therm...

Claims

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Application Information

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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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