Method for synthesizing spherical nano-zirconia by using detonation method in grain diameter controllable manner

A nano-zirconia and spherical technology, which is applied in the field of detonation synthesis of nano-materials, can solve the problems of consumption, multiple lye, and multiple by-products, and achieve the effects of high purity, low environmental pollution, and small product particle size

Active Publication Date: 2013-04-03
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN03150722.0 proposes a method for synthesizing nano-zirconia by precipitation method, but this method needs to be carried out in multiple steps

Method used

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  • Method for synthesizing spherical nano-zirconia by using detonation method in grain diameter controllable manner

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Embodiment 1

[0023] Get 100g raw material according to the formula of the present invention, wherein ozokerite 8g, sorbitan oleate 3.5g, sodium nitrite 0.5g, zirconium nitrate pentahydrate 72g, ammonium nitrate 15g, water 1g.

[0024] Mix zirconium nitrate pentahydrate, ammonium nitrate and water, heat to dissolve, and keep the temperature of the solution at 120°C; melt ozokerite and sorbitan oleate, mix well, and keep the solution temperature at 120°C; adjust the stirring blade The rotating speed is 3000r / min, and the above two solutions are mixed to form a water-in-oil paste.

[0025] When the temperature of the paste is 90-100°C, add sodium nitrite to the above-mentioned water-in-oil type paste, and mix it well with the paste; fill the prepared paste on paper In rolls, the charge density is 1.15g / cm 3 ; according to the attached figure 1 Assemble No. 8 industrial electric detonator, explosible paste medicine roll and inert cooling medium, then put into the explosion jar to detonate. ...

Embodiment 2

[0029] Get 100g raw material according to the formula of the present invention, wherein paraffin 3g, polyisobutylene succinimide 5g, resin microsphere 1g, ammonium nitrate 20g, zirconium nitrate pentahydrate 66g, water 5g.

[0030] Mix ammonium nitrate, zirconium nitrate pentahydrate with water, heat to dissolve, and keep the temperature of the solution at 110°C; melt the paraffin and polyisobutylene succinimide, mix well, and keep the solution temperature at 120°C; adjust the rotation speed of the stirring paddle to 2000r / min, mix the above two solutions to form a water-in-oil paste.

[0031] When the temperature of the paste is 90-100°C, add resin microspheres to the above-mentioned water-in-oil type paste, and make it fully mixed with the paste; fill the prepared paste on paper In the roll, the charge density is controlled at 1.05g / cm 3 ; according to the attached figure 1 Assemble the No. 8 industrial electric detonator, explosive paste roll and inert cooling medium, an...

Embodiment 3

[0035] Take 100g of raw materials according to the formula of the present invention, including 3g of machine oil, 1.4g of paraffin, 1g of polyoxyethylene stearate, 1g of polyoxyethylene abietate, 0.6g of sensitizer (bicarbonate+organic coupling compound), 0.6g of nitric acid Ammonium 30g, zirconium nitrate pentahydrate 60g, water 3g.

[0036] Mix ammonium nitrate, zirconium nitrate pentahydrate with water, heat to dissolve, and keep the temperature of the solution at 120°C; melt engine oil, polyoxyethylene stearate, and polyoxyethylene abietic acid, mix well, and keep the temperature of the solution at 120°C °C; adjust the rotation speed of the stirring paddle to 1000r / min, and mix the above two solutions to form a water-in-oil type paste.

[0037] When the temperature of the paste is 90-100°C, add a sensitizer to the above-mentioned water-in-oil type paste, and mix it thoroughly with the paste; fill the prepared paste on paper In the roll, the charge density is controlled at...

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Abstract

The invention belongs to the field of physical or chemical methods and provides a formula for synthesizing spherical nano-zirconia by using a detonation method in a grain diameter controllable manner and a synthetic method thereof. The method is characterized by comprising the following steps of: mixing and sensitively synthesizing zircon salt, ammonium nitrate and organic hydrocarbon compounds into paste with detonation property; and, after detonating the paste, carrying out drastic redox reaction among the ammonium nitrate as the oxidant, the zircon salt and the organic hydrocarbon compounds as the reducing agent, so that a high-temperature and high-pressure environment is formed, oxidizing zirconium atoms into zirconia, and crystallizing and gathering under the action of an inert cooling medium to form the spherical nano-zirconia. The method disclosed by the invention has the advantages that the yield of the spherical nano-zirconia is high; 20 g of spherical nano-zirconia can be obtained from 100 g of drug; the environmental pollution in the production process is low; the process is simple; the cost is low; the yield is easy to enlarge, so that industrial production is realized; the grain diameter of the spherical nano-zirconia is distributed in the range of 10-100 nm and is adjustable; and the appearance of the spherical nano-zirconia is a regular sphere.

Description

technical field [0001] The invention relates to a method for synthesizing nanomaterials by detonation method, more specifically, the invention relates to a detonation-synthesized spherical nano-zirconia (ZrO 2 ) formula and synthesis method. The generated spherical nano-zirconia can be widely used in functional ceramics, structural ceramics, electronic ceramics, bioceramics, wear-resistant coatings, solid fuel cells and other fields. Background technique [0002] Nano-zirconia has excellent mechanical, thermal, optical, and electrical properties, and is a very good inorganic non-metallic material. It has a wide range of applications in high-temperature structural materials, high-temperature optical components, heat-sensitive components, and fuel cells. [0003] The commonly used synthesis methods of nano-zirconia include solid-phase synthesis, gas-phase synthesis and liquid-phase synthesis. Among them, the solid-phase synthesis method and the gas-phase synthesis method are...

Claims

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Application Information

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IPC IPC(8): C01G25/02B82Y40/00
Inventor 韩志伟解立峰倪欧琪陈际洋解一超
Owner NANJING UNIV OF SCI & TECH
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