Preparation method of organic network of ZrO2 nanopowder

Abstract

The invention relates to a preparation method of the organic network of ZrO2 nanopowder and the method uses zirconium oxychloride, polyvinyl alcohol, glutaraldehyde and ammonia water as main raw materials. The method is as follows: the organic polymerization reaction is utilized to form a network structure; inorganic Zr<4+> occupies the micro-zone of the three-dimensional network to perform precipitation reaction with the dispersed OH<->; and finally heat treatment is performed to obtain spherical ZrO2 nanopowder belonging to the tetragonal crystal system. The invention comprises the following steps: preparing organic network precursor solution, preparing Zr<4+> / organic network gel, performing aftertreatment and preparing the finished ZrO2 nanopowder. The method of the invention is characterized by simple technological operations, low cost and high powder purity and is suitable for industrialized mass production.

Description

ZrO 2 Organic network preparation method of nano powder Technical field The invention relates to the field of nano powder materials, in particular to a method for preparing an organic network of ZrO2 nano powder. Background technique ZrO2 is a very important structural and functional material. It has excellent physical and chemical properties, such as high boiling point and high melting point (2700℃), low thermal conductivity and large thermal expansion coefficient. It is a kind of high temperature resistance, wear resistance, Corrosive inorganic non-metallic materials. ZrO2 nanoparticles are different from conventional materials in terms of optics, mechanics and electromagnetics due to the reduced particle size, so they have greater application value in industrial synthesis, catalysts, catalyst carriers, and special ceramics. There are physical and chemical methods for preparing ZrO2 nanometers. The physical methods mainly include evaporation-condensation method, sputtering...

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Problems solved by technology

Among the above several methods, some have high requirements on equipment and complex process; some have low output and high cost, and are only suitable for laboratory research; some have coarse product particle size and low purity; therefore, they are not suitable for large-scale industrial production

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