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Nano barium titanate material with low K value and high refractive index and dispersion liquid prepared from nano barium titanate material

A technology with high refractive index and barium titanate, which is applied in the direction of titanate, nanotechnology, alkaline earth metal titanate, etc., can solve the problems of high dielectric constant, high refractive index, low dielectric constant, etc., and achieve wide application Effects of domain and application value

Active Publication Date: 2020-08-07
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is to provide a kind of cubic phase nanobarium titanate material of mesoporous structure, and it has lower dielectric constant (K value) and higher refractive index, to solve prior art The problem of high dielectric constant of medium and nano barium titanate materials;

Method used

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  • Nano barium titanate material with low K value and high refractive index and dispersion liquid prepared from nano barium titanate material
  • Nano barium titanate material with low K value and high refractive index and dispersion liquid prepared from nano barium titanate material
  • Nano barium titanate material with low K value and high refractive index and dispersion liquid prepared from nano barium titanate material

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Embodiment 1

[0040] The preparation method of nanometer barium titanate described in the present embodiment, comprises the steps:

[0041] (1) adding ammoniacal liquor to 2.58kg concentration is the TiCl of 44-46wt% 4 In the solution, adjust the pH of the system to 9 to obtain orthotitanic acid sol; carry out solid-liquid separation of the obtained orthotitanic acid solution, then add 36g of organic base-trimethylamantadine and mix well, and add 1.8kg of octahydrate hydroxide Barium and 27g of barium titanate with a particle size of 20-30nm were used as seed crystals, and the precursor sol was obtained after fully stirring for 1.5h;

[0042] (2) Transfer the precursor solution obtained in step (1) to a hydrothermal kettle, perform hydrothermal synthesis at 200° C. for 6 hours, and stir at a speed of 50 rpm to obtain a barium titanate mixed solution;

[0043] (3) The barium titanate solution obtained in step (2) is cooled, washed with pure water or ethanol, dried at 120-150° C. for 2 hours...

Embodiment 2

[0047] The preparation method of nanometer barium titanate described in the present embodiment, comprises the steps:

[0048] (1) adding ammoniacal liquor to 2.58kg concentration is the TiCl of 44-46wt% 4 In the solution, adjust the system pH=9 to obtain orthotitanic acid sol; the obtained orthotitanic acid solution is subjected to solid-liquid separation, then add 27g organic base-polyacrylic acid, and add 1.8kg octahydrate barium hydroxide and 27g particle diameter of 20-30nm barium titanate was used as the seed crystal, and the precursor sol was obtained after fully stirring for 1.5 hours;

[0049] (2) Transfer the precursor solution obtained in step (1) to a hydrothermal kettle, perform hydrothermal synthesis at 200° C. for 6 hours, and stir at a speed of 50 rpm to obtain a barium titanate mixed solution;

[0050] (3) The barium titanate solution obtained in step (2) is cooled, washed with pure water or ethanol, dried at 120-150° C. for 2 hours, and calcined at 800° C. to...

Embodiment 3

[0054] The preparation method of nanometer barium titanate described in the present embodiment, comprises the steps:

[0055] (1) adding ammoniacal liquor to 2.58kg concentration is the TiCl of 44-46wt% 4 In the solution, adjust the pH of the system to 9 to obtain orthotitanic acid sol; perform solid-liquid separation on the obtained orthotitanic acid solution, and then add 36g of organic base-1,1-dimethyl-3,5-dimethylpiperidine Buzz, and add 1.8kg barium hydroxide octahydrate and 27g barium titanate with a particle size of 20-30nm as seed crystals, and stir thoroughly for 1.5h to obtain the precursor sol;

[0056] (2) Transfer the precursor solution obtained in step (1) to a hydrothermal kettle, perform hydrothermal synthesis at 200° C. for 6 hours, and stir at a speed of 50 rpm to obtain a barium titanate mixed solution;

[0057] (3) The barium titanate solution obtained in step (2) is cooled, washed with pure water or ethanol, dried at 120-150° C. for 2 hours, and calcined...

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Abstract

The invention belongs to the technical field of inorganic non-metallic materials, particularly relates to a nano barium titanate material with a low K value and a high refractive index, and further discloses a preparation method of the nano barium titanate material and nano barium titanate dispersion liquid prepared from the nano barium titanate material. According to the invention, in the nano barium titanate material, proper organic alkali is selected as a template agent in a hydrothermal synthesis process; the mesoporous structure, the crystal form and the grain size of barium titanate arecontrolled by adjusting the content of a template agent and hydrothermal synthesis conditions, and then the ultrafine mesoporous cubic-phase nano barium titanate suitable for the mesoporous structure,parameters and low K value is obtained through crystallization. The dielectric constant K value of the nano barium titanate is only 49-82 and is obviously smaller than the dielectric constant k = 100-200 of nano barium titanate obtained through conventional hydrothermal synthesis, so that the nano barium titanate has wider application fields and higher application value.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, specifically relates to a low K value, high refractive index nano barium titanate material, and further discloses its preparation method and the prepared nano barium titanate dispersion liquid. Background technique [0002] Barium titanate (BaTiO 3 ) has a typical perovskite structure and is the basic matrix material of titanate series electronic ceramics. It has excellent characteristics of high dielectric constant and low dielectric loss, and has excellent piezoelectricity, ferroelectricity, withstand voltage and Insulation properties are widely used in optics, thermals, electronics, acoustics and other fields. They are mainly used in the manufacture of electronic components such as pressure sensors, thermistors, capacitors, microwave devices, and memory elements, and have become the preferred choice of electronic ceramic materials. important basic raw materials. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B82Y40/00
CPCC01G23/006B82Y40/00C01P2006/40C01P2006/16C01P2006/14C01P2006/12C01P2004/64C01P2004/04C01P2002/72
Inventor 宋锡滨艾辽东奚洪亮
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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