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Environmental-protection high-strength easy-dispersible nanometer zirconia material

A nano-zirconia, high-strength technology, applied in the direction of zirconia, inorganic chemistry, carbon compounds, etc., can solve problems such as product or glaze cracking, environmental operator hazards, and affecting product quality, and achieve good dispersion and solubility enhancement , Improve strength and density, and increase the effect of using range

Active Publication Date: 2018-11-02
上海施迈尔精密陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, zirconia is also used as a ceramic additive. However, zirconia has three crystal forms: monoclinic, tetragonal, and cubic. The volume of zirconia in different forms is also different during the conversion process. Direct addition will cause products or glazes The cracking of the surface affects the quality of the product. Now, when modifying zirconia, metal oxides are often added to improve the stability of zirconia. Now yttrium nitrate is often added as a stabilizer in the preparation process, and the amount is relatively large. Large, yttrium nitrate is extremely toxic, and toxic by-products are prone to appear in the process and by-products, which are harmful to the environment and operators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An environment-friendly, high-strength and easy-to-disperse nano-zirconia material, the preparation method comprising the following steps:

[0023] a, take 100 parts of zirconium chloride by weight, 400 parts of absolute ethanol, and 20 parts of anhydrous acetic acid and put them into a container, and stir with a magnetic stirrer for 30-60 minutes;

[0024] b. Prepare the treatment liquid, which is made of the following components by weight: 0.8 parts of silane coupling agent, 0.05 parts of lanthanum nitrate, 0.7 parts of sodium dodecylsulfonate, 1 part of oxalic acid, 30 parts of water, mix and stir for 20 minutes , to obtain a treatment solution, take 8 parts of carbon nanotubes and add them to the above treatment solution, use ultrasonic treatment for 60-81min, and then evaporate the mixed solution to dryness using a vacuum rotary evaporator to obtain pretreated carbon nanotubes;

[0025] c. Mix the pretreated carbon nanotubes prepared in step b with the mixture obta...

Embodiment 2

[0032] An environment-friendly, high-strength and easy-to-disperse nano-zirconia material, the preparation method comprising the following steps:

[0033] a, take 100 parts of zirconium chloride by weight, 400 parts of absolute ethanol, and 20 parts of anhydrous acetic acid and put them into a container, and stir with a magnetic stirrer for 30-60 minutes;

[0034] b. Prepare the treatment solution, which is made of the following components by weight: 0.8 parts of silane coupling agent, 0.05 parts of lanthanum nitrate, 0.7 parts of sodium dodecylsulfonate, 1 part of oxalic acid, 30 parts of water, mixed and stirred for 20 minutes , to obtain a treatment solution, take 8 parts of carbon nanotubes and add them to the above treatment solution, use ultrasonic treatment for 60-81min, and then evaporate the mixed solution to dryness using a vacuum rotary evaporator to obtain pretreated carbon nanotubes;

[0035] c. Mix the pretreated carbon nanotubes prepared in step b with the mixtu...

Embodiment 3

[0039] An environment-friendly, high-strength and easy-to-disperse nano-zirconia material, the preparation method comprising the following steps:

[0040] a, take 100 parts of zirconium chloride by weight, 400 parts of absolute ethanol, and 20 parts of anhydrous acetic acid and put them into a container, and stir with a magnetic stirrer for 30-60 minutes;

[0041] b. Prepare the treatment liquid, which is made of the following components by weight: 0.8 parts of silane coupling agent, 0.05 parts of lanthanum nitrate, 0.7 parts of sodium dodecylsulfonate, 1 part of oxalic acid, 30 parts of water, mix and stir for 20 minutes , to obtain a treatment solution, get 8 parts of carbon nanotubes and add them to the above treatment solution, use ultrasonic treatment for 60-81min, and then evaporate the mixed solution to dryness using a vacuum rotary evaporator to obtain pretreated carbon nanotubes; this application uses a coupling agent, Treating carbon nanotubes with lanthanum nitrate,...

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Abstract

The invention relates to an environmental-protection high-strength easy-dispersible nanometer zirconia material. A preparation method of the environmental-protection high-strength easy-dispersible nanometer zirconia material comprises following steps: a, a zirconium-containing solution is pepared; b, pretreated carbon nanotube is prepared; c, a zirconium dioxide matrix is prepared; and d, the zirconium dioxide matrix is subjected to heat treatment under nitrogen protection so as to obtain modified nanometer zirconia. According to the preparation method, zirconium chloride is taken as a raw material of nanometer zirconia, the modified carbon nanotube is added in preparation process, so that the stability of zirconia is improved obviously, and when the environmental-protection high-strengtheasy-dispersible nanometer zirconia material is used in ceramic preparation, relatively high mechanical strength and dimension stability are achieved.

Description

technical field [0001] The invention belongs to the field of novel nanometer materials and the field of nanometer-modified inorganic non-metallic materials, and in particular relates to an environment-friendly, high-strength and easily dispersed nano-zirconia material. Background technique [0002] Nano zirconia has the characteristics of strong thermal shock resistance, high temperature resistance, good chemical stability, and outstanding material composite. Combining nano zirconia with other materials (Al 2 O3, SiO 2 ) compound, can greatly improve the performance parameters of the material, improve its fracture toughness, flexural strength, etc. Therefore, nano-zirconium dioxide is not only used in the field of structural ceramics and functional ceramics, but also used to improve the surface properties of metal materials (thermal conductivity, thermal shock resistance, high temperature oxidation resistance, etc.). [0003] At present, zirconia is also used as a ceramic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C01B32/168C04B35/80C04B35/48C04B35/622C04B35/626C04B35/634
CPCC01B32/168C01G25/02C04B35/48C04B35/622C04B35/62645C04B35/63416C04B35/63496C04B35/803C04B2235/6562C04B2235/6567C04B2235/661C04B2235/77C04B2235/96
Inventor 郭艳
Owner 上海施迈尔精密陶瓷有限公司
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