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A kind of transparent nano-zirconia liquid phase dispersion and its preparation method and application

A nano-zirconia, liquid-phase dispersion technology, applied in the field of nano-materials, can solve the problems of poor dispersion, poor optical properties of composite materials, easy agglomeration of nano-zirconia particles, etc. The effect of improving transparency

Active Publication Date: 2017-08-15
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method adopts the method of hydrolyzing inorganic zirconium salt to prepare the precursor hydrated zirconia. After washing and hydroheating, the hydrothermal product does not need any treatment, and it is directly a transparent zirconia liquid phase dispersion without adding any auxiliary materials during the process. Dispersion can solve the problems of easy agglomeration of nano-zirconia particles, poor dispersion, and poor optical properties of composite materials, thus endowing products with higher application performance and wider application range

Method used

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  • A kind of transparent nano-zirconia liquid phase dispersion and its preparation method and application
  • A kind of transparent nano-zirconia liquid phase dispersion and its preparation method and application
  • A kind of transparent nano-zirconia liquid phase dispersion and its preparation method and application

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Effect test

Embodiment 1

[0083] A method for preparing transparent nano-zirconia liquid dispersion, including the following steps:

[0084] 1) Dissolve 1.74 g of zirconyl nitrate dihydrate in 70 ml of ethanol to prepare a solution of zirconyl nitrate;

[0085] 2) Dissolve 0.6g of sodium hydroxide in 60ml of ethanol to prepare a sodium hydroxide solution;

[0086] 3) The zirconyl nitrate solution was added dropwise to the sodium hydroxide solution, the reaction temperature was controlled to 15°C, the stirring rate was 800r / min, and the sodium hydroxide solution was used to adjust and control the final pH of the reaction system to 7;

[0087] 4) After reaching the final pH requirement of the reaction system, aging at 65°C for 2 hours;

[0088] 5) Filter the solution and then wash and purify with water to obtain a filter cake;

[0089] 6) The purified filter cake was ultrasonically dispersed in 7.2 g of water, transferred to an autoclave, and hydrothermally treated at 150° C. for 24 hours to obtain a transparent an...

Embodiment 2

[0092] A method for preparing transparent nano-zirconia liquid dispersion, including the following steps:

[0093] 1) Dissolve 2.8g zirconium nitrate pentahydrate in 100ml methanol to prepare zirconium nitrate solution;

[0094] 2) Dissolve 1.68g potassium hydroxide in 120ml methanol to prepare potassium hydroxide solution;

[0095] 3) Add the zirconium nitrate solution dropwise to the potassium hydroxide solution, control the reaction temperature to 35°C, and the stirring rate to be 600r / min. Use potassium hydroxide solution to adjust and control the final pH of the reaction system to 5;

[0096] 4) After reaching the final pH requirement of the reaction system, the temperature is increased to 55°C and aged for 4 hours;

[0097] 5) Filter the solution and then wash and purify with water to obtain a filter cake;

[0098] 6) The purified filter cake was ultrasonically dispersed in 15.2 g of water, transferred to an autoclave, and hydrothermally treated at 220° C. for 3 hours to obtain a t...

Embodiment 3

[0101] A method for preparing transparent nano-zirconia liquid dispersion, including the following steps:

[0102] 1) Dissolve 2.1 g of zirconium oxychloride octahydrate in 70 ml of water to prepare a zirconium oxychloride solution;

[0103] 2) Dissolve 0.24g of sodium hydroxide in 50ml of water to prepare a sodium hydroxide solution;

[0104] 3) Add the sodium hydroxide solution dropwise to the zirconium oxychloride solution, control the reaction temperature to 20°C, the stirring rate to 500r / min, and use the sodium hydroxide solution to adjust and control the final pH of the reaction system to 2;

[0105] 4) After reaching the final pH requirement of the reaction system, the temperature is increased to 70°C and aged for 1 hour;

[0106] 5) Transfer the solution to a dialysis bag for washing and purification;

[0107] 6) Transfer the purified reaction solution to an autoclave, hydrothermally heat it at 190°C for 12 hours, adjust the concentration by rotary evaporation, and obtain a tran...

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Abstract

The invention discloses transparent nanometer zirconium dioxide liquid phase dispersoid, and a preparation method and application thereof. The dispersoid comprises liquid phase media and nanometer zirconium dioxide particles, wherein the nanometer zirconium dioxide particles are uniformly dispersed into liquid phase media; the solid content of the dispersoid is 1 weight percent to 50 weight percent; the one-dimensional dimension of the nanometer zirconium dioxide particles is 1 to 12nm; the liquid phase media are water, organic solvents, a mixture of water-soluble organic solvents and water, or a mixture of different organic solvents. The nanometer zirconium dioxide in the product has high crystallinity degree; the particle diameter is small; the distribution is uniform; any surfactant is not contained; the purity is high; the dispersion effect is good; no sedimentation occurs after the still standing for 6 months or longer. The product prepared by the method does not need any treatment, and is directly the transparent nanometer zirconium dioxide liquid phase dispersoid; any substance does not need to be added for dispersion assistance; the problems of easy agglomeration, poor dispersibility and poor optical performance of the composite material are solved; higher application performance and wider application ranges are given to the product.

Description

Technical field [0001] The invention relates to the technical field of nanomaterials. More specifically, it relates to a transparent nano-zirconia liquid dispersion and its preparation method and application. Background technique [0002] Nano-zirconia has the characteristics of high melting point, high boiling point, low thermal conductivity, low thermal expansion coefficient, good wear resistance, high refractive index, and excellent corrosion resistance. It can be widely used in functional ceramics, gemstone industry, catalyst industry, piezoelectric components , Ion exchangers, solid electrolytes and environmental protection. As an electronic ceramic material, nano-zirconia can be used to make filters, ultrasonic oscillators, high-temperature conductors, piezoelectric components and solid fuel cells, etc.; as a functional ceramic material, nano-zirconia is used to make gas, temperature, sound, pressure, acceleration As well as the raw materials for sensors such as humidity....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G25/02B82Y40/00
Inventor 陈建峰张聪王洁欣曾晓飞刘皓天
Owner BEIJING UNIV OF CHEM TECH
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