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High-energy-density microcrystalline glass dielectric material preparation process

A technology of dielectric materials and high energy storage density, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., to achieve the effect of reducing energy consumption output, simple and convenient preparation method, and high dielectric constant

Inactive Publication Date: 2017-09-05
HEFEI ZEJUN ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a process for preparing a glass-ceramic dielectric material with high energy storage density. The dielectric material prepared by the method has both high dielectric constant and high breakdown field strength, thereby Solve the deficiencies and defects in the current preparation of glass-ceramic dielectric materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation process of a glass-ceramic dielectric material with high energy storage density is carried out according to the following steps:

[0027] (1) Mix the raw materials and grind them through a planetary ball mill until the particle size is ≤1mm to obtain powder; the above-mentioned raw materials include the following components: SiO 2 25kg, BaCO 3 20kg, TiO 2 10kg, SrCO 3 5kg, H 3 BO 3 5kg, Nb 2 o 5 2kg, MnO 2 1kg and BaF 2 1kg;

[0028] The molar ratio of the main components of the glass-ceramic dielectric material is SiO 2 :BaO:TiO 2 :SrO:B 2 o 3 :Nb 2 o 5 :MnO 2 =0.25:0.20:0.10:0.05:0.05:0.02:0.01, doped with BaF 2 The number of moles accounts for 3% of the total number of moles of components.

[0029] (2) Transporting the powder to an electric furnace for melting into molten liquid, wherein the heating rate of the electric furnace is 80°C / min, the melting time is 1h, and the melting temperature is 1380°C;

[0030] (3) pour the molten liquid...

Embodiment 2

[0034] A preparation process of a glass-ceramic dielectric material with high energy storage density is carried out according to the following steps:

[0035] (1) Mix the raw materials and grind them through a planetary ball mill until the particle size is ≤1mm to obtain powder; the above-mentioned raw materials include the following components: SiO 2 30kg, BaCO 3 22kg, TiO 2 12kg, SrCO 3 8kg, H 3 BO 3 8kg, Nb 2 o 5 4kg, MnO 2 1kg and BaF 2 1kg;

[0036] The molar ratio of the main components of the glass-ceramic dielectric material is SiO 2 :BaO:TiO 2 :SrO:B 2 o 3 :Nb 2 o 5 :MnO 2 =0.3:0.22:0.12:0.08:0.08:0.04:0.01, doped with BaF 2 The number of moles accounts for 4% of the total number of moles of components.

[0037] (2) Transporting the powder to an electric furnace for melting into molten liquid, wherein the heating rate of the electric furnace is 85°C / min, the melting time is 1.2h, and the melting temperature is 1420°C;

[0038] (3) pour the molten liq...

Embodiment 3

[0042] A preparation process of a glass-ceramic dielectric material with high energy storage density is carried out according to the following steps:

[0043] (1) Mix the raw materials and grind them through a planetary ball mill until the particle size is ≤1mm to obtain powder; the above-mentioned raw materials include the following components: SiO 2 35kg, BaCO 3 25kg, TiO 2 15kg, SrCO 3 10kg, H 3 BO 3 10kg, Nb 2 o 5 5kg, MnO 2 3kg and BaF 2 2kg;

[0044] The molar ratio of the main components of the glass-ceramic dielectric material is SiO 2 :BaO:TiO 2 :SrO:B 2 o 3 :Nb 2 o 5 :MnO 2 =0.35:0.25:0.15:0.10:0.10:0.05:0.03, BaF doped 2 The number of moles accounts for 5% of the total number of moles of components.

[0045] (2) Transporting the powder to an electric furnace for melting into molten liquid, wherein the heating rate of the electric furnace is 90°C / min, the melting time is 1.5h, and the melting temperature is 1450°C;

[0046] (3) pour the molten liqui...

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Abstract

The invention relates to the field of electronic materials and discloses a high-energy-density microcrystalline glass dielectric material preparation process. The process includes steps: 1) mixing and grinding raw materials into powder; 2) smelting the powder into melt liquid; 3) pouring the melt liquid into a mould, performing three-stage annealing treatment after pouring is finished, and cutting to obtain a glass material; 4) subjecting the glass material to controlled crystallization treatment; 5) finally coating a semi-finished product with medium-temperature silver paste excellent in adhesion and conductivity by means of silk screen printing, and sintering and solidifying at a certain temperature to form a metal silver electrode. The dielectric material prepared according to the method is high in dielectric constant and breakdown field strength, and shortcomings and defects in preparation of existing microcrystalline glass dielectric materials are overcome.

Description

technical field [0001] The invention relates to the field of electronic materials, in particular to a preparation process of a glass-ceramic dielectric material with high energy storage density. Background technique [0002] Glass-ceramics, also known as glass-ceramics, is a kind of polycrystalline solid material containing a large number of microcrystalline phases and glass phases, which is obtained by controlling the crystallization of a specific composition of basic glass during the heating process. Although the structure, properties and preparation methods of glass-ceramics are different from those of glass and ceramics, glass-ceramics not only has the basic properties of glass, but also has the polycrystalline characteristics of ceramics. It combines the advantages of glass and ceramics and has become a unique new material. Functional glass-ceramic mainly obtains special ferroelectric and piezoelectric functions through the design of composition and structure, and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16C03C17/10C03B19/02
CPCC03B19/02C03C10/16C03C17/10C03C2217/256C03C2218/119
Inventor 徐仙峰
Owner HEFEI ZEJUN ELECTRICAL EQUIP CO LTD
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