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Nanometer barium titanate powder preparation method based on ball milling

A kind of barium titanate and nanotechnology, which is applied in the direction of nanotechnology, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of difficult purification and many impurities in nanobarium titanate powder, and achieve short process and dispersion Good performance and mild reaction conditions

Active Publication Date: 2015-08-12
HUNAN SEEDER ELECTRONICS CERAMIC TECH IND PARK DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nano-barium titanate powder obtained by this method has many impurities and is difficult to purify.

Method used

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  • Nanometer barium titanate powder preparation method based on ball milling
  • Nanometer barium titanate powder preparation method based on ball milling
  • Nanometer barium titanate powder preparation method based on ball milling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Fully mix barium oxide and titanium oxide powder in a certain proportion, the molar ratio of barium oxide and titanium oxide is 1:1, and the diameter of zirconia grinding ball is: 10mm;

[0026] (2) the above-mentioned mixture, zirconia grinding balls, and ball milling fluid are placed in a ball mill jar in a mass ratio of 30:1:15;

[0027] (3) Start the ball mill for ball milling for 6 hours, and the ball mill rotating speed is 240r / min;

[0028] (4) Filtrating the ball milling solution after ball milling, washing several times, drying, and then crushing and nano-grinding to obtain barium titanate nanopowder. Through product testing, the TEM figure ( figure 1 ), it can be seen from the figure that the average particle size of the barium titanate nanopowder is about 70 nanometers, and the particles are uniform spherical, with good dispersion and no massive agglomerates. Then from its XRD figure ( figure 2 ), it can be seen that no impurity peaks have been detect...

Embodiment 2

[0035] (1) Fully mix barium oxide and titanium oxide powder in a certain proportion, the molar ratio of barium oxide and titanium oxide is 1:1, and the diameter of the grinding ball is: 15mm;

[0036] (2) placing the above-mentioned mixture, zirconia grinding balls, and ball milling liquid in a ball milling jar at a mass ratio of 40:1:20;

[0037] (3) start ball mill ball mill for 7 hours, and the ball mill rotating speed is 350r / min;

[0038](4) Filtrating the ball milling solution after ball milling, washing several times, drying, and then crushing and nano-grinding to obtain barium titanate nanopowder. According to product testing, the average particle size of the prepared barium titanate nanopowder is about 60 nanometers, and the particles are uniform spherical, with good dispersibility and no massive agglomerates. From its XRD detection, it can be seen that no impurity peaks are detected, all are peaks of tetragonal phase barium titanate nanopowder, and the purity reache...

Embodiment 3

[0040] (1) Fully mix barium oxide and titanium oxide powder in a certain proportion, the molar ratio of barium oxide and titanium oxide is 1:1, and the diameter of the grinding ball is: 15mm;

[0041] (2) the above-mentioned mixture, zirconia grinding balls, and ball milling fluid are placed in a ball mill jar in a mass ratio of 50:1:25;

[0042] (3) Start the ball mill for ball milling for 8 hours, and the ball mill rotating speed is 450r / min;

[0043] (4) Filtrating the ball milling solution after ball milling, washing several times, drying, and then crushing and nano-grinding to obtain barium titanate nanopowder. According to product testing, the average particle size of the prepared barium titanate nanopowder is about 80 nanometers, and the particles are uniform spherical, with good dispersibility and no massive agglomerates. From its XRD detection, it can be seen that no impurity peaks are detected, all are peaks of tetragonal phase barium titanate nanopowder, and the pu...

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Abstract

The present invention discloses a nanometer barium titanate powder preparation method based on ball milling. According to the method, barium oxide, titanium oxide, zirconium oxide grinding ball, and deionized water are added to a ball mill to carry out a chemical reaction under a ball milling condition, and the mixture obtained from the reaction is sequentially subjected to filtration separation, drying, and grinding crushing to obtain the tetragonal phase nanometer barium titanate powder. According to the present invention, the tetragonal phase nanometer barium titanate powder prepared through the method has characteristics of high purity, small particle size, uniform particle, and good dispersion, wherein the average particle size of the powder is within 60-80 nm; and the preparation process does not require the addition of any other chemical solvents, has advantages of no requirement of calcining, simple process, inexpensive equipment, easy operation, low energy consumption, and the like, and provides good industrial prospects in the field of electronic ceramic material preparation.

Description

technical field [0001] The invention relates to a method for preparing nano barium titanate powder based on ball milling, and belongs to the field of electronic ceramic powder material preparation. Background technique [0002] With the development of society, more and more electronic ceramics are used in the electronic industry. The electronic ceramic industry has formed an independent and complete industrial production system in my country. Among them, barium titanate ceramic material is one of the most widely used electronic ceramic raw materials at home and abroad. Because of its high dielectric constant, good ferroelectricity, piezoelectricity, withstand voltage and insulation properties, it is mainly used to make capacitors, Multilayer substrates, various sensors, semiconductor materials and sensitive components. With the discovery of the performance of barium titanate ceramics and its development and utilization as electronic ceramic devices, higher requirements are ...

Claims

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Application Information

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IPC IPC(8): C01G23/00B82Y30/00
Inventor 彭建国彭铁骊张黎科汤育才
Owner HUNAN SEEDER ELECTRONICS CERAMIC TECH IND PARK DEV CO LTD
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