Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of nano zirconium oxide

A nano-zirconia and zirconium oxychloride technology, applied in zirconia, nanotechnology and other directions, can solve the problems of serious agglomeration, coarse sample particles, wide particle size distribution, etc., and achieve low crystal transformation temperature, small particle size, The effect of reducing energy consumption

Pending Publication Date: 2020-12-22
HENAN UNIVERSITY OF TECHNOLOGY
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the traditional nano-zirconia preparation process, due to the high sintering temperature of high-temperature calcination, many shortcomings will occur. The obtained samples have coarse particles, serious agglomeration, wide particle size distribution, and the crystal structure cannot exist stably. Mutual transformation, which greatly reduces the physical and chemical properties of nano-zirconia, thus limiting the development of nano-zirconia materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A preparation method of nano zirconia, specifically implemented according to the following steps:

[0024] S1: ammonia water and zirconium oxychloride are fully reacted by mechanical stirring to form a precursor;

[0025] S2: Slowly add a small amount of stabilizer to the precursor for mixing, and then carry out hydrothermal reaction under the condition of magnetic stirring;

[0026] S3: The sample prepared in S2 is filtered, centrifuged, washed, dried, and then calcined to prepare pure tetragonal nano-zirconia with uniform distribution and small particle size.

[0027] The technical solution of the present invention will be described with specific examples below.

Embodiment 1

[0029] A preparation method of nano zirconia, the specific steps are:

[0030] Take 3.56g of zirconium oxychloride sample, add it into deionized water, and prepare 80ml of solution, then slowly drop 10-15ml of ammonia water into the above solution to produce white flocculent precipitate, then stir it with an automatic mixer for 4h and heat it to make it Full response. Finally, slowly add 0.012g of stabilizer, the stabilizer can choose magnesia, calcium oxide and cerium oxide, here choose magnesia, the mass fraction is about 0.5~2% of zirconia, stir for 5min. Then pour the precursor into a 100ml reactor for magnetic stirring, the filling degree is between 75% and 80%, the reaction temperature is set at 220°C, and the time is 12h. After the hydrothermal reaction is completed, the reaction kettle is cooled to room temperature, opened, centrifuged and washed with absolute ethanol three times, and nano-sized zirconia can be prepared. Take 2g of hydrothermally heated nano-zirconia...

Embodiment 2

[0032] A preparation method of nano zirconia, the specific steps are:

[0033] Take 3.56g of zirconium oxychloride sample, add it into deionized water, and prepare 80ml of solution, then slowly drop 10-15ml of ammonia water into the above solution to produce white flocculent precipitate, then stir it with an automatic mixer for 4h and heat it to make it Full response. Finally, slowly add 0.025g stabilizer, the stabilizer can choose magnesium oxide, calcium oxide and cerium oxide, here choose magnesium oxide, the mass fraction is about 0.5~2% of zirconium oxide and stir for 5 minutes. Then pour the precursor into a 100ml reactor for magnetic stirring, the filling degree is between 75% and 80%, the reaction temperature is set at 220°C, and the time is 12h. After the hydrothermal reaction is completed, the reaction kettle is cooled to room temperature, opened, centrifuged and washed with absolute ethanol three times, and nano-sized zirconia can be prepared. Take 2g of hydrother...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of nano zirconium oxide powder, and belongs to the field of nano composite materials and nano ceramic materials. The preparation method comprises the following specific preparation steps: firstly, carrying out sufficient reaction on ammonia water and zirconium oxychloride through mechanical stirring to generate a precursor, then slowly adding a small amount of stabilizer into the precursor, mixing, carrying out hydrothermal reaction under the condition of magnetic stirring, and finally, filtering, centrifuging, washing, drying and calcining a hydrothermal sample, and preparing the pure tetragonal phase nano zirconium oxide with uniform distribution and small particle size is prepared. The preparation method has the advantages of uniform powder dispersion, small particle size, effectively solving the problem of particle agglomeration, and easily available raw materials, can be used as the raw material powder of high performance structural ceramics, is suitable for harsh environmental conditions, and provides technical support for the advanced ceramic field and the refractory material field.

Description

technical field [0001] The invention belongs to the field of nano ceramic materials and advanced functional ceramics, in particular to a preparation method of nano zirconia. Background technique [0002] Zirconium dioxide is the only metal oxide with acidity, alkalinity, oxidation and reduction, and has unique advantages in physics and chemistry. Therefore, it is widely used in industrial synthesis, catalysts, advanced functional ceramics, medical fields and special refractories. It has great use value. Due to its high strength and hardness, good wear resistance and unfavorable corrosion, it can be used for a long time under harsh environmental conditions, and its service life is greatly improved compared with ordinary materials; due to its good chemical stability, erosion resistance, corrosion resistance, low Excellent thermal conductivity, can be used in kiln walls, good thermal insulation properties can reduce energy consumption and improve production efficiency. [000...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02B82Y40/00
CPCB82Y40/00C01G25/02C01P2004/64
Inventor 刘世凯陈颖鑫贾昆仑孙亚光
Owner HENAN UNIVERSITY OF TECHNOLOGY