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A kind of formula of high pressure-resistant temperature stable dielectric material and its preparation method

A temperature-stable, dielectric material technology, used in fixed capacitor dielectrics, fixed capacitors, and components of fixed capacitors, etc., can solve problems such as increasing the volume of high-voltage energy storage capacitors, unfavorable industrial production of capacitor products, etc., to reduce loss, The effect of improving density and reducing dielectric loss

Active Publication Date: 2021-07-02
FUJIAN TORCH ELECTRON TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, pulse multilayer ceramic capacitors are commonly used in circuit design. With the reduction of the thickness of the dielectric layer, the breakdown strength of the dielectric layer tends to decrease, which greatly increases the volume of high-voltage energy storage capacitor products, which is not conducive to the industrialization of capacitor products. Production

Method used

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  • A kind of formula of high pressure-resistant temperature stable dielectric material and its preparation method
  • A kind of formula of high pressure-resistant temperature stable dielectric material and its preparation method
  • A kind of formula of high pressure-resistant temperature stable dielectric material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) According to the molar ratio of 1:1, weigh 23.44 parts by weight of ZnO and 76.56 parts by weight of Nb 2 o 5 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 800°C for 4 hours to synthesize ZnNb 2 o 6 ;

[0031] (2) According to the molar ratio of 3:1:1, weigh 63.03 parts by weight of BaCO 3 , 8.66 parts by weight ZnO and 28.30 parts by weight Nb 2 o 5 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1000°C for 4 hours to synthesize Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 ;

[0032] (3) According to the molar ratio of 4:4:1, weigh 51.43 parts by weight of ZnO, 39.08 parts by weight of H 3 BO 3 , 9.49 parts by weight SiO 2 , fully mixed, 40-mesh sieve, heated to 1350°C and kept for 0.5h, quenched to room temperature, and made into ZBS glass

[0033] (4) Take by weight, 100g BaTiO 3 , 7.44g ZnNb 2 o 6 , 17.30g Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 , 0.25gMnCO 3 , 0.33g Er 2 o 3 , 1.72g ZBS glass was used for batchi...

Embodiment 2

[0036] (1) According to the molar ratio of 1:1, weigh 23.44 parts by weight of ZnO and 76.56 parts by weight of Nb 2 o 5 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 950°C for 1 hour to synthesize ZnNb 2 o 6 ;

[0037] (2) According to the molar ratio of 3:1:1, weigh 63.03 parts by weight of BaCO 3 , 8.66 parts by weight ZnO and 28.30 parts by weight Nb 2 o 5 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1050°C for 3 hours to synthesize Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 ;

[0038](3) According to the molar ratio of 4:4:1, weigh 51.43 parts by weight of ZnO, 39.08 parts by weight of H 3 BO 3 , 9.49 parts by weight SiO 2 , fully mixed, 40-mesh screen, heated to 1400°C and kept for 0.5h, quenched to room temperature, and made into ZBS glass

[0039] (4) Take by weight, 100g BaTiO 3 , 6.21g ZnNb 2 o 6 , 19.37g Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 , 0.10gMnCO 3 , 0.13g La 2 o 3 , 2.92g ZBS glass for batching. Using...

Embodiment 3

[0042] (1) According to the molar ratio of 1:1, weigh 23.44 parts by weight of ZnO and 76.56 parts by weight of Nb 2 o 5 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 850°C for 3 hours to synthesize ZnNb 2 o 6 ;

[0043] (2) According to the molar ratio of 3:1:1, weigh 63.03 parts by weight of BaCO 3 , 8.66 parts by weight ZnO and 28.30 parts by weight Nb 2 o 5 , mixed by ball milling, dried, crushed through a 40-mesh sieve, and calcined at 1100°C for 2 hours to synthesize Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 ;

[0044] (3) According to the molar ratio of 4:4:1, weigh 51.43 parts by weight of ZnO, 39.08 parts by weight of H 3 BO 3 , 9.49 parts by weight SiO 2 , fully mixed, 40-mesh sieve, heated to 1350°C and kept for 0.5h, quenched to room temperature, and made into ZBS glass

[0045] (4) Take by weight, 100g BaTiO 3 , 8.00g ZnNb 2 o 6 , 10.30g Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 , 0.10gMnCO 3 , 0.36g Gd 2 o 3 , 1.02g ZBS glass for batching. Usin...

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Abstract

A high withstand voltage temperature stable dielectric material, a ceramic capacitor and a preparation method thereof. Synthesis of ZnNb by solid phase method 2 o 6 , Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 , firing ZBS glass; with 100 parts by weight of BaTiO 3 , adding 3 to 8 parts by weight of ZnNb 2 o 6 ; 10-20 parts by weight of Ba(Zn 1 / 3 ,Nb 2 / 3 )O 3 ; 0.1 to 0.3 parts by weight of MnCO 3 ; 0.1 to 0.4 parts by weight of Re 2 o 3 ; 1-3 parts by weight of ZBS glass. Dispersed by ball milling, dried and crushed to finally form a medium material. The dielectric material provided by the present invention has a dielectric constant of 450±50 and a loss tangent value of DF≤20×10 ‑4 , the working temperature range is -55℃~125℃, the capacitance temperature coefficient is -200ppm / K~200ppm / K, and it has extremely high breakdown strength (≥60V / μm). A pulse energy storage capacitor with an operating temperature range of -55°C to 125°C can be prepared by using the dielectric material provided by the invention.

Description

technical field [0001] The invention relates to a dielectric functional ceramic material, in particular to a ceramic dielectric material with high withstand voltage and stable temperature characteristics, a preparation method thereof, and a ceramic capacitor prepared by using the dielectric material. Background technique [0002] In the pulse power system, the dielectric energy storage capacitor is an indispensable and important part of the whole system and plays a vital role in the whole pulse power system. Released on the load in a short period of time to form a strong pulse power and high current. This series of characteristics make it widely used in solid engine ignition system and satellite electric propulsion system, which can greatly improve the safety and reliability of the system; The field has the prospect of popularization and application, and has application potential in many fields such as detonation circuit, ignition system, laser system, energy storage module...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/468C04B35/622H01G4/12H01G4/30
CPCC04B35/468C04B35/622C04B2235/3224C04B2235/3225C04B2235/3227C04B2235/3255C04B2235/3262C04B2235/3284H01G4/1227H01G4/1254H01G4/30
Inventor 陈永虹林志盛宋运雄许金飘郑冬建洪志超
Owner FUJIAN TORCH ELECTRON TECH CO LTD
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