Leadless high-voltage ceramic capacitor material

A high-voltage ceramic and capacitor technology, applied in the direction of capacitors, fixed capacitors, fixed capacitor dielectrics, etc., can solve the problems of inability to meet the miniaturization of electronic circuits, human and environmental damage, insufficient withstand voltage, etc., to achieve a small temperature change rate, reduce Effect of dielectric loss and compressive strength improvement

Inactive Publication Date: 2017-04-05
ANHUI FEIDA ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the widely used high-voltage ceramic capacitor materials often contain a large amount of lead. Lead is an element in the scope of strong pollutants. It is non-degradable and will cause long-term and lasting damage to the human body and th

Method used

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Examples

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Example Embodiment

[0013] Example 1

[0014] A lead-free high-voltage ceramic capacitor material, characterized in that it is made of the following components in parts by weight: barium titanate 78, titanium dioxide 15, calcium carbonate 4, zirconium dioxide 3, silicon dioxide 4, and modified additives 2; The modified additive is made of the following components in parts by weight: alumina 6, tin dioxide 4, sodium silicate 2, manganese carbonate 1, and attapulgite 4.

Example Embodiment

[0015] Example 2

[0016] A lead-free high-voltage ceramic capacitor material, characterized in that it is made of the following components in parts by weight: barium titanate 84, titanium dioxide 18, calcium carbonate 6, zirconium dioxide 5, silicon dioxide 7, and modified additives 4; The modified additive is made of the following components in parts by weight: alumina 6, tin dioxide 4, sodium silicate 2, manganese carbonate 1, and attapulgite 4.

Example Embodiment

[0017] Example 3

[0018] A lead-free high-voltage ceramic capacitor material, characterized in that it is made of the following components in parts by weight: barium titanate 80, titanium dioxide 17, calcium carbonate 5, zirconium dioxide 4, silicon dioxide 5, and modified additives 3; The modified additive is made of the following components in parts by weight: alumina 6, tin dioxide 4, sodium silicate 2, manganese carbonate 1, and attapulgite 4.

[0019] In the embodiment of the present invention:

[0020] Further, the calcium carbonate is light calcium carbonate, and the calcium carbonate is calcined at a high temperature of 265-270°C for 15 minutes.

[0021] Further, the silica is pretreated: vinyltrimethoxysilane and ethanol are mixed in a mass ratio of 3:85 to obtain a mixed solution, and the silica is added to the mixed solution to soak for 8-10 hours, and then filtered, Dry the surface and it is fine.

[0022] Further, the preparation method of the modified additive is as follow

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PUM

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Abstract

The invention discloses a leadless high-voltage ceramic capacitor material, which is characterized by being made from the following components, barium titanate, titanium dioxide, calcium carbonate, zirconium dioxide, silica, and a modified additive. Compared with a ceramic capacitor material in the prior art, the leadless high-voltage ceramic capacitor material is optimized and improved in formula and preparation technology. The formula is free of lead or rare metal element, is green and eco-friendly, and is low in cost. Through addition of the modified additive, performance of the ceramic material is greatly improved. The dielectric constant and voltage-resistant value of the material is dramatically increased, and a small temperature variation rate is obtained, so that a capacitor is stale in working process.

Description

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Claims

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Application Information

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Owner ANHUI FEIDA ELECTRICAL TECH CO LTD
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