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A kind of high-voltage ceramic pulse capacitor, dielectric material and preparation method thereof

A technology of pulse capacitors and dielectric materials, applied in the direction of fixed capacitor dielectrics, capacitors, fixed capacitors, etc., can solve the problems of high spontaneous polarization, complex crystal phase structure, and low breakdown strength, so as to improve density and insulation Effect of resistivity and loss reduction

Active Publication Date: 2022-03-11
FUJIAN TORCH ELECTRON TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing ceramic pulse capacitors are mainly prepared with barium titanate as the main material. The barium titanate material has a complex crystal phase structure, high spontaneous polarization strength, multiple crystal phase transitions at different temperatures, and low breakdown strength; Pulse capacitors with lead titanate as the main body have been banned by most countries due to the large amount of lead pollution produced during the production process, and further improvement is needed

Method used

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  • A kind of high-voltage ceramic pulse capacitor, dielectric material and preparation method thereof
  • A kind of high-voltage ceramic pulse capacitor, dielectric material and preparation method thereof
  • A kind of high-voltage ceramic pulse capacitor, dielectric material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0049] A method for manufacturing a high-voltage ceramic pulse capacitor, comprising the following steps:

[0050] Step 1, according to the molar ratio of 1:1, weigh 64.88 parts by weight of SrCO 3 , 35.12 parts by weight TiO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1150°C for 2 hours to synthesize SrTiO 3 ;

[0051] Step 2, according to the molar ratio of 1:1, weigh 54.51 parts by weight of SrCO 3 , 45.49 parts by weight ZrO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1200°C for 2 hours to synthesize SrZrO 3 ;

[0052] Step 3, weigh 73.04 parts by weight of ZnO and 26.96 parts by weight of SiO in a molar ratio of 2:1 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 900°C for 2 hours to synthesize Zn 2 SiO 4 ;

[0053] Step 4, according to the molar ratio of 1:2, weigh 74.46 parts by weight of Bi 2 o 3 , 25.54 parts by weight TiO 2 , mixed by ball mill...

Embodiment 2

[0057] Step 1, according to the molar ratio of 0.99:1, weigh 64.65 parts by weight of SrCO 3 , 35.35 parts by weight TiO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1200°C for 1 hour to synthesize SrTiO 3 ;

[0058] Step 2, according to the molar ratio of 1.01:1, weigh 54.75 parts by weight of SrCO 3 , 45.25 parts by weight ZrO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1050°C for 3 hours to synthesize SrZrO 3 ;

[0059] Step 3, weigh 73.14 parts by weight of ZnO and 26.86 parts by weight of SiO in a molar ratio of 2.01:1 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1000°C for 1 hour to synthesize Zn 2 SiO 4 ;

[0060] Step 4, according to the molar ratio of 1:3, weigh 66.03 parts by weight of Bi 2 o 3 , 33.97 parts by weight TiO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1000°C for 1 hour to synthesize Bi 2 Ti...

Embodiment 3

[0064] Step 1, according to the molar ratio of 1.02:1, weigh 65.33 parts by weight of SrCO 3 , 34.67 parts by weight TiO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1150°C for 2 hours to synthesize SrTiO 3 ;

[0065] Step 2, weigh 54.00 parts by weight of SrCO at a molar ratio of 0.98:1 3 , 46.00 parts by weight ZrO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1200°C for 2 hours to synthesize SrZrO 3 ;

[0066] Step 3, weigh 73.04 parts by weight of ZnO and 26.96 parts by weight of SiO in a molar ratio of 2:1 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 900°C for 2 hours to synthesize Zn 2 SiO 4 ;

[0067] Step 4, according to the molar ratio of 1:1, weigh 85.36 parts by weight of Bi 2 o 3 , 14.64 parts by weight TiO 2 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 900°C for 2 hours to synthesize Bi 2 TiO 5 ;

[0068...

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Abstract

A high-voltage ceramic pulse capacitor, a dielectric material and a preparation method thereof, a dielectric material for a high-voltage ceramic pulse capacitor, comprising the following raw materials in parts by weight: 100 parts by weight of SrTiO 3 , 35‑60 parts by weight of SrZrO 3 , 10‑20 parts by weight of BiX, 0.05‑2 parts by weight of MnCO 3 , 0.4-2 parts by weight of MgO, 0.5-3 parts by weight of Zn 2 SiO 4 , 0.5‑3.5 parts by weight of BaB 2 o 4 , BiX is Bi 2 o 3 with TiO 2 or Bi 2 o 3 with ZrO 2 Solid-phase synthesis of compounds by limiting the specific composition of the dielectric material to SrTiO 3 based, with SrZrO 3 , Zn 2 SiO 4 , BiX coordination, by introducing Zn 2 SiO 4 and define SrTiO 3 , SrZrO 3 , Zn 2 SiO 4 , the amount of BiX added to limit the SrTiO 3 , SrZrO 3 , Zn 2 SiO 4 , the ratio between BiX and the specific composition of BiX can effectively control the dielectric constant of the dielectric material in the range of 250±30, properly reduce the loss and control the capacitance temperature coefficient in the range of -2500~-1600ppm / K, So that the prepared high-voltage ceramic pulse capacitor can be used as a high-voltage energy storage capacitor in the design (-55°C-125°C) temperature range.

Description

technical field [0001] The invention belongs to a dielectric functional ceramic material, in particular to a medium used for a high-voltage ceramic pulse capacitor, a manufacturing method thereof, and a ceramic capacitor made of the dielectric material. Background technique [0002] With the development of science and technology, multilayer ceramic capacitors are more and more widely used, gradually replacing the application fields of original film capacitors, especially in the field of high-voltage energy storage, and are widely used as energy storage components of pulse power systems. Compared with film capacitors, ceramic capacitors have stable and reliable inherent characteristics, high temperature resistance, and high power density, and are increasingly used in power systems. The dielectric energy storage capacitor is an indispensable and important part of the entire power system, and plays a vital role in the entire pulse power system. As an energy storage device, it c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/12C04B35/49C04B35/622C04B35/626
CPCC04B35/49C04B35/622C04B35/62605H01G4/1218C04B2235/442C04B2235/3206C04B2235/3427C04B2235/3409C04B2235/3298C04B2235/3284C04B2235/3418C04B2235/6583C04B2235/96
Inventor 陈永虹郑冬建洪志超
Owner FUJIAN TORCH ELECTRON TECH CO LTD
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