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Method using molten-salt growth method to manufacture micro-nano zinc-magnesium titanate crystalline powder

A technology of magnesium micro-nano, zinc magnesium titanate, applied in nanotechnology, chemical instruments and methods, titanium compounds, etc., can solve problems such as unfavorable industrial production, expensive raw materials, complicated processes, etc. , the effect of simple process

Inactive Publication Date: 2014-04-09
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have their own defects that are difficult to overcome. They often require special equipment, expensive raw materials, and complicated processes, which are not conducive to the realization of industrial production requirements, and are difficult to further promote in the long run.

Method used

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  • Method using molten-salt growth method to manufacture micro-nano zinc-magnesium titanate crystalline powder
  • Method using molten-salt growth method to manufacture micro-nano zinc-magnesium titanate crystalline powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1, place zinc oxide, titanium dioxide, magnesium chloride and sodium chloride in a ball mill, and use absolute ethanol and zirconium balls as ball milling media to mix uniformly to obtain a mixed powder; : the mol ratio of magnesium is 0.1: 1: 1.1; the consumption of described sodium chloride is 3 times of the total mass of zinc oxide, titanium dioxide and magnesium chloride;

[0022] Step 2, drying and grinding the mixed powder described in step 1, calcining the ground mixed powder at a temperature of 700° C. for 4 hours to obtain zinc magnesium titanate powder; the drying temperature 50°C;

[0023] Step 3, placing the zinc magnesium titanate powder described in step 2 in a ball mill, and using absolute ethanol and zirconium balls as the ball milling medium to carry out ball milling dispersion;

[0024] Step 4. Repeatedly wash the zinc magnesium titanate powder dispersed by ball milling in step 3 with deionized water until the washing liquid does not contain chlo...

Embodiment 2

[0027] This example is the same as Example 1, except that the magnesium salt used is magnesium nitrate.

Embodiment 3

[0029] Step 1. Put zinc oxide, titanium dioxide, magnesium nitrate and sodium chloride in a ball mill, and use absolute ethanol and zirconium balls as ball milling media to mix uniformly to obtain a mixed powder; : titanium: the mol ratio of magnesium is 0.6: 1: 0.6; the consumption of described sodium chloride is 5 times of the total mass of zinc oxide, titanium dioxide and magnesium nitrate;

[0030] Step 2, drying and grinding the mixed powder in step 1, calcining the ground mixed powder at a temperature of 800° C. for 3 hours to obtain zinc magnesium titanate powder; the drying temperature 55°C;

[0031] Step 3, placing the zinc magnesium titanate powder described in step 2 in a ball mill, and using absolute ethanol and zirconium balls as the ball milling medium to carry out ball milling dispersion;

[0032] Step 4. Repeatedly wash the zinc magnesium titanate powder dispersed by ball milling in step 3 with deionized water until the washing liquid does not contain chloride...

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Abstract

The invention discloses a method using a molten-salt growth method to manufacture micro-nano zinc-magnesium titanate crystalline powder. The method provided by the invention comprises the following steps: (1), putting zinc oxide, titanium dioxide, magnesium salt and sodium chloride in a ball mill for being subjected to ball-milling to mix uniformly, so as to obtain mixed powder; (2), drying the mixed powder, then grinding and roasting the mixed powder to obtain zinc-magnesium titanate powder; (3), putting the zinc-magnesium titanate powder in the ball mill for being subjected to ball-milling to disperse; and (4), using deionized water to repeatedly wash the zinc-magnesium titanate powder dispersed by the ball mill until no chloridion exists in the washing solution, and then obtaining the micro-nano zinc-magnesium titanate crystalline powder with a particle size ranging from 50nm to 120nm after drying. The method provided by the invention has the characteristics that the materials are easy to obtain, the cost is low, the process is simple, the manufacture is convenient, the environmental adaptation is good, the industrial production is easy to realize, and the like. The micro-nano zinc-magnesium titanate crystalline powder manufactured with the method has the particle size at the range of 50-120nm and is good in powder dispersibility and better in crystal growth.

Description

technical field [0001] The invention belongs to the technical field of preparation of micro-nano crystal powder, and in particular relates to a method for preparing zinc-magnesium titanate micro-nano crystal powder by a molten salt method. Background technique [0002] In recent years, the rapid development of mobile communication technology has made microwave circuits develop in the direction of miniaturization, integration and low cost. Multilayer structure (monolithic) is one of the main means to achieve this goal. In the multi-layer structure, the dielectric material is required to have a lower sintering temperature, so as to be better compatible with the co-firing of the internal electrodes at a temperature lower than the melting point of the metal conductor. Metal silver and copper are replacing expensive silver / palladium and other precious metals due to their good electrical conductivity and low price, and have become the new favorites for making inner electrodes of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00B82Y40/00
Inventor 刘向春
Owner XIAN UNIV OF SCI & TECH