Preparation method of nano-zirconium dioxide special for toughening ceramics

A nano-zirconium dioxide and zirconium oxychloride technology, applied in the field of inorganic chemical synthesis, can solve the problems of uncontrollable morphology, particle agglomeration, and the product cannot effectively achieve the purpose of ceramic toughening, and achieve narrow particle size distribution and particle shape. The effect of uniform appearance, improved strength and toughness

Inactive Publication Date: 2017-10-20
常州瑞坦商贸有限公司
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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: in the preparation process of traditional nano-zirconium dioxide, the particles tend to be seriously agglomerated and the shape is uncontrollable, which leads to the problem that the product cannot effectively achieve the purpose of ceramic toughening. Preparation method of special nano zirconia for toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Weigh 10g of zirconium oxychloride octahydrate, pour it into a beaker filled with 120mL of deionized water, stir and mix with a glass rod until the zirconium oxychloride octahydrate is completely dissolved to obtain a zirconium oxychloride solution, and add 500mL of Deionized water, then pass nitrogen gas into the three-necked flask at a rate of 3mL / min, under nitrogen protection, add 3g of polystyrene acrylic acid to the three-necked flask in turn, and then transfer the three-necked flask to a digital speed measuring constant temperature magnetic stirrer , at a temperature of 60°C and a rotation speed of 600r / min, stir and mix at a constant temperature for 45min. After the stirring and mixing is completed, stop feeding nitrogen, adjust the temperature to 70°C, and stir at a speed of 300r / min. Air was introduced into the three-necked flask, and at the same time, 100 mL of zirconium oxychloride solution was added dropwise to the three-necked flask through the dropping fun...

example 2

[0023] Weigh 10g of zirconium oxychloride octahydrate, pour it into a beaker filled with 120mL of deionized water, stir and mix with a glass rod until the zirconium oxychloride octahydrate is completely dissolved to obtain a zirconium oxychloride solution, and add 500mL of Deionized water, and then nitrogen gas was passed into the three-necked flask at a rate of 3mL / min. Under nitrogen protection, 3g polystyrene acrylic acid and 10g dopamine were successively added to the three-necked flask, and then the three-necked flask was transferred to a digital display. In the agitator, under the conditions of temperature 60°C and rotation speed 600r / min, stir and mix at constant temperature for 45min. Air was introduced into the three-necked flask at a rate of min, and at the same time, 100 mL of zirconium oxychloride solution was added dropwise to the three-necked flask through the dropping funnel, and the dripping was completed within 30 minutes. , add 100mL of ammonia water with a m...

example 3

[0026]Weigh 10g of zirconium oxychloride octahydrate, pour it into a beaker containing 120mL of deionized water, stir and mix with a glass rod until the zirconium oxychloride octahydrate is completely dissolved to obtain a zirconium oxychloride solution, add 500mL to the three-necked flask Deionized water, then nitrogen was introduced into the three-necked flask at a rate of 3mL / min, and under nitrogen protection, 3g of polystyrene acrylic acid and 15g of dopamine were added to the three-necked flask in turn, and then the three-necked flask was transferred to a digital display speed measurement constant temperature magnetic force In the stirrer, under the condition of temperature of 60 ℃ and rotation speed of 600 r / min, constant temperature stirring and mixing for 45 minutes, when the stirring and mixing is over, stop feeding nitrogen, adjust the temperature to 70 ℃, and stir the rotation speed to 300 r / min, and use 6 mL / min. The air was introduced into the three-necked flask a...

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Abstract

The invention discloses a preparation method of nano-zirconium dioxide special for toughening ceramics, belonging to the technical field of inorganic chemical synthesis. The preparation method comprises the steps of firstly mixing polystyrene acrylic acid with dopamine in water under a nitrogen protection condition so as to form a uniform emulsion, complexing dopamine with metal ions in a zirconium oxychloride solution to slowly release the metal ions, introducing air into a flask while dropwise adding ammonia water to generate oxidative polymerization on dopamine under the action of dissolved oxygen in water so as to form a polydopamine network, enabling produced zirconium hydroxide precipitate to be adsorbed to the surface of a polystyrene acrylic acid template by virtue of the formed polydopamine network, carrying out washing to remove impurity ions, drying, and calcining to remove a polystyrene acrylic acid template core and a polydopamine network structure, so as to obtain nano-zirconium dioxide special for the toughening ceramics. The preparation method has the beneficial effects that a preparation process is simple, conditions are controllable, obtained nano-zirconium dioxide is of a uniform shape, and the particle size distribution of nano-zirconium dioxide is relatively narrow.

Description

technical field [0001] The invention discloses a preparation method of nano zirconia specially used for toughening ceramics, and belongs to the technical field of inorganic chemical synthesis. Background technique [0002] Zirconium dioxide is an inorganic non-metallic material with high melting point, high boiling point, small thermal conductivity, large thermal expansion coefficient, good wear resistance and excellent corrosion resistance. It is used in many different fields, such as ceramic pigments, engineering ceramics, gemstones It has a wide range of applications in industries, piezoelectric elements, ion exchangers, and solid electrolytes. At present, the preparation methods of nano-zirconia mainly include gas-phase method and liquid-phase method. [0003] The gas phase method is to directly use gas or change substances into gas by various means, so that it undergoes physical changes or chemical reactions in the gas state, and finally condenses and grows to form nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/78C04B35/10C04B35/626
CPCC04B35/10C04B35/62605C04B35/6267C04B35/78C04B2235/3244C04B2235/5454C04B2235/96
Inventor 陆娜许丽君
Owner 常州瑞坦商贸有限公司
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