Strontium titanate based negative temperature coefficient high-voltage ceramic capacitor material

A negative temperature coefficient, high-voltage ceramic technology, applied in the direction of fixed capacitor dielectric, fixed capacitor parts, etc., can solve the problems of not being able to meet the use, and achieve the effect of good low temperature resistance

Inactive Publication Date: 2011-07-06
费金华
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the current high-voltage capacitors have a working temperature range of -30 degrees to 65 degrees, but they cannot be used in polar or space environments.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] In specific implementation, we will use the above strontium titanate SrTiO 3 , calcium titanate Bismuth titanate Magnesium titanate MgTiO3 is mixed according to the formula ratio, then added with polyvinyl alcohol, pressed into shape, and then sintered in the range of 1250 to 1400 degrees Celsius to obtain a ceramic capacitor.

[0007] When proportioning, we first mix strontium carbonate SrCO 3 and titanium dioxide TiO 2 , calcium carbonate CaCO 3 and titanium dioxide TiO 2 According to a certain ratio, it is mixed by ball milling, dried, and then synthesized at 1000 to 1200 degrees Celsius to obtain strontium titanate Calcium titanate CaTiO 3 ; After getting strontium titanate Calcium titanate CaTiO 3 Finally, the rest of the above materials are stirred and ball milled according to the ratio, diluted with a small amount of acetone, stirred at a high speed (7000r / min) for 20min, to fully disperse the inorganic materials, added 8% polyvinyl alcohol for spray ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
dielectric lossaaaaaaaaaa
Login to view more

Abstract

The invention provides a strontium titanate based negative temperature coefficient high-voltage ceramic capacitor material. The material comprises the following components: 80 to 84 percent of strontium titanate SrTiO3, 8 to 10 percent of calcium titanate BiTiO3, 1.5 to 3 percent of bismuth titanate CaTiO3 and 10.5 to 13 percent of MgTiO3. By the adoption of the formula, the working range of a capacitor can be extended to a range between minus 65 degrees to 65 degrees, and the material has better low-temperature resistant performance.

Description

technical field [0001] The invention relates to a capacitor material, especially a high-voltage ceramic capacitor material. Background technique [0002] Most of the current high-voltage capacitors have an operating temperature range of -30°C to 65°C, but they cannot be used in polar or space environments. Contents of the invention [0003] The object of the present invention is to provide a high-voltage ceramic capacitor material with low temperature resistance. [0004] A strontium titanate-based high-voltage ceramic capacitor material with a negative temperature coefficient is characterized in that it is made of strontium titanate SrTiO 3 80~84%, calcium titanate BiTiO 3 8-10%, bismuth titanate CaTiO 3 A high-voltage ceramic capacitor material composed of 1.5-3%, magnesium titanate MgTiO3 10.5-13%. [0005] With this formula, the working range of the capacitor can be extended to -65 degrees to 85 degrees, and it has better low temperature resistance. detailed desc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/47C04B35/622H01G4/12
Inventor 费金华
Owner 费金华
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap