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Transparent nanometer zirconium dioxide liquid phase dispersoid, and preparation method and application thereof

A nano-zirconia, liquid-phase dispersion technology, applied in the field of nano-materials, can solve the problems of poor optical properties of composite materials, easy agglomeration of nano-zirconia particles, poor dispersion, etc., to broaden the scope of use and application performance, improve transparency, To ensure the effect of non-agglomeration

Active Publication Date: 2017-01-04
BEIJING UNIV OF CHEM TECH
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  • Summary
  • 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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  • Transparent nanometer zirconium dioxide liquid phase dispersoid, and preparation method and application thereof
  • Transparent nanometer zirconium dioxide liquid phase dispersoid, and preparation method and application thereof
  • Transparent nanometer zirconium dioxide liquid phase dispersoid, and preparation method and application thereof

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Effect test

Embodiment 1

[0083] A preparation method of a transparent nano-zirconia liquid phase dispersion, comprising the following steps:

[0084] 1) 1.74g zirconyl nitrate dihydrate was dissolved in 70ml ethanol to obtain a zirconyl nitrate solution;

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

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

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

[0088] 5) washing and purifying the solution 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 ...

Embodiment 2

[0092] A preparation method of a transparent nano-zirconia liquid phase dispersion, comprising the following steps:

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

[0094] 2) 1.68g of potassium hydroxide was dissolved in 120ml of methanol to obtain potassium hydroxide solution;

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

[0096] 4) After reaching the final pH requirement of the reaction system, heat up to 55°C and age for 4 hours;

[0097] 5) washing and purifying the solution 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 subjected to hydro...

Embodiment 3

[0101] A preparation method of a transparent nano-zirconia liquid phase dispersion, comprising the following steps:

[0102] 1) 2.1g zirconium oxychloride octahydrate was dissolved in 70ml water to obtain zirconium oxychloride solution;

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

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

[0105] 4) After reaching the final pH requirement of the reaction system, heat up to 70°C and age for 1 hour;

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

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

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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 nanometer materials. More specifically, it relates to a liquid-phase dispersion of transparent nano-zirconia and its preparation method and application. Background technique [0002] Nano zirconia has the characteristics of high melting point, high boiling point, small thermal conductivity, small 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, and piezoelectric components. , ion exchangers, solid electrolytes and environmental protection and other fields. As an electronic ceramic material, nano-zirconia can be used to manufacture filters, ultrasonic oscillators, high-temperature conductors, piezoelectric elements and solid fuel cells, etc.; as a functional ceramic material, nano-zirconia can be used to manufacture gas, temperature, sound, pressure, accelerati...

Claims

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Application Information

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Patent Type & Authority Applications(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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