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Energy storage niobate microcrystalline glass dielectric material and preparation method thereof

A technology of glass-ceramics and dielectric materials, applied in the field of energy storage dielectric materials, can solve problems such as high breakdown field strength dielectric constant

Inactive Publication Date: 2013-07-24
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dielectric material prepared by this method has high breakdown field strength and moderate dielectric constant, thus solving the deficiencies and defects in the current preparation of glass-ceramic dielectric materials

Method used

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  • Energy storage niobate microcrystalline glass dielectric material and preparation method thereof
  • Energy storage niobate microcrystalline glass dielectric material and preparation method thereof
  • Energy storage niobate microcrystalline glass dielectric material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An environment-friendly energy storage niobate glass-ceramic dielectric and a preparation method thereof, wherein there is no admixture XY in its composition 2 .

[0026] (1) BaCO with a purity greater than 98.5% 3 , SrCO 3 、Na 2 CO 3 , Nb 2 o 5 , SiO 2 、H 3 BO 3 as raw material, according to Na 2 O:SrO:BaO:Nb 2 o 5 : SiO 2 :B 2 o3 =a:b:c:d:e:f (where a=0.05, b=c=0.21, d=0.18, e=0.3, f=0.05, a+b+c+d+e+f=1) The mol ratio batching, all raw material total consumptions are 100 grams. Then these raw materials are added into a ball mill with ball milling media (zirconia balls and absolute ethanol) to grind for 6 hours, dried and then kept at 1530° C. for 3 hours to melt into molten glass;

[0027] (2) quickly pour the high-temperature molten glass obtained in step (1) into a rectangular or circular mold made of copper material, then anneal for 10 hours to eliminate stress, and finally cut into glass flakes with a thickness of 0.5 mm;

[0028] (3) Perform contr...

Embodiment 2

[0032] A kind of environment-friendly energy storage niobate glass-ceramics dielectric and preparation method thereof, there is no Na in its composition 2 O and admixture XY 2 .

[0033] (1) BaCO with a purity greater than 98.5% 3 , SrCO 3 , Nb 2 o 5 , SiO 2 、H 3 BO 3 As raw material, according to SrO: BaO: Nb 2 o 5 : SiO 2 :B 2 o 3 =b:c:d:e:f (wherein b=c=0.225, d=0.2, e=0.3, f=0.05, a+b+c+d+e+f=1), all The total consumption of raw materials is 100 grams. Then these raw materials are added into a ball mill with ball milling media (zirconia balls and absolute ethanol) to grind for 6 hours, dried and then kept at 1550°C for 3 hours to melt into molten glass;

[0034] (2) quickly pour the high-temperature molten glass obtained in step (1) into a metal mold, then anneal for 10 hours to eliminate stress, and finally cut into glass flakes with a thickness of 0.3-0.5 mm;

[0035] (3) Perform controlled crystallization on the glass flakes prepared in step (2). The crys...

Embodiment 3

[0039] An environment-friendly energy storage niobate glass-ceramic dielectric and a preparation method thereof, wherein there is no admixture XY in its composition 2 .

[0040] (1) BaCO with a purity greater than 98.5% 3 , SrCO 3 、Na 2 CO 3 , Nb 2 o 5 , SiO 2 、H 3 BO 3 as raw material, according to Na 2 O:SrO:BaO:Nb 2 o 5 : SiO 2 :B 2 o 3 =a:b:c:d:e:f (where a=0.05, b=c=0.21, d=0.18, e=0.3, f=0.05, a+b+c+d+e+f=1) The mol ratio batching, all raw material total consumptions are 100 grams. Then these raw materials are added into a ball mill with ball milling media (zirconia balls and absolute ethanol) to grind for 6 hours, dried and then kept at 1530°C for 2 hours to melt into molten glass;

[0041] (2) quickly pour the high-temperature glass liquid obtained in step (1) into a metal mold, then anneal for 10 hours to eliminate stress, and finally cut into glass flakes with a thickness of 0.5 mm;

[0042] (3) Controlled crystallization of the glass flakes prepared...

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Abstract

The invention relates to an energy storage niobate microcrystalline glass dielectric material and a preparation method thereof. The preparation method comprises the following steps of: preparing BaCO3, SrCO3, Na2CO3, Nb2O5, SiO2, B2O3, TiO2 and BaF2 serving as initial raw materials in a ratio of aNa2O3, bSrO, cBaO, dNb2O5, eSiO2, fB2O3 and gXY2 (X is Ti or Ba, and Y is O or F), ball-milling and mixing for 6 hours, drying, melting at the high temperature of between 1,530 and 1,550 DEG C for 2 to 3 hours, quickly cooling, annealing to obtain high-density uniform glass, and performing controlled crystallization at a certain temperature to obtain the microcrystalline glass dielectric material. The relative dielectric constant of the microcrystalline glass dielectric prepared by the method is adjustable in the range of 30 to 100, and the maximum direct-current breakdown field strength is 1,500kV / cm.

Description

technical field [0001] The invention relates to an energy storage medium material, in particular to an environment-friendly, energy storage niobate glass-ceramic medium material and a preparation method thereof. Background technique [0002] The energy storage medium material can input the energy of low power into the energy storage device for a long time, after compressing and converting the energy, it can supply the load with extremely high power in a very short time (the shortest can be nanoseconds). freed. Energy storage dielectric materials can be used as capacitors with high energy storage density. At present, capacitors with high energy storage density are extremely important in major military scientific research, modern industry and civilian fields such as national defense major military research, such as all-electric propulsion ships, electrothermal electromagnetic rail gun weapons, controlled laser nuclear fusion, oil and gas deep well exploration, etc. Applicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02
Inventor 陈国华张文俊刘心宇
Owner GUILIN UNIV OF ELECTRONIC TECH
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