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A safe and environmentally friendly non-linear piezoresistor and its application

A varistor, safety and environmental protection technology, applied in varistor cores, varistors, etc., can solve problems such as carcinogenicity, achieve the effects of inhibiting growth, reducing leakage current, and improving characteristics

Inactive Publication Date: 2019-05-03
NORTH CHINA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional zinc oxide resistors use zinc oxide as the main material and contain a variety of trace metal compounds, such as bismuth trioxide, antimony trioxide, manganese dioxide, tricobalt tetroxide, chromium trioxide, etc. The main material and a variety of Polycrystalline and multi-phase varistor ceramic sheets formed by mixing and molding metal compounds and sintering at high temperature, but these varistors contain more antimony compounds, and trivalent antimony compounds have carcinogenic effects, so the preparation A safe and environmentally friendly zinc oxide varistor without antimony is of great significance

Method used

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  • A safe and environmentally friendly non-linear piezoresistor and its application

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Effect test

Embodiment 1

[0016] A safe and environment-friendly non-linear varistor, which is composed of varistor ceramic sheets and conductive electrode gold, and the varistor chip is composed of the following materials in parts by weight: 200 parts of zinc oxide, 1.28 parts of manganese dioxide, 0.23 parts of silicon dioxide, 0.25 parts of titanium dioxide, 0.5 parts of nine cobalt octasulfide, 0.5 parts of nickel trisulfide, 0.03 parts of silicon carbide, 0.2 parts of zirconium nitride, 0.05 parts of zirconium titanate, and 1.5 parts of calcium copper titanate. The particle size of zinc oxide is 20nm. Wherein the material of the conductive electrode is gold.

[0017] The safe and environment-friendly non-linear piezoresistor of the present invention is suitable for the overvoltage absorption of the rotor side of the generator and the overvoltage absorption of the DC side of the rectified excitation power supply.

Embodiment 2

[0019] A safe and environmentally friendly non-linear varistor, consisting of varistor ceramic sheets and conductive electrode gold, the varistor chip is composed of the following materials in parts by weight: 200 parts of zinc oxide, 1.48 parts of manganese dioxide, 0.28 parts of silicon dioxide, 0.3 parts of titanium dioxide, 0.95 parts of nine cobalt octasulfide, 0.95 parts of nickel trisulfide, 0.07 parts of silicon carbide, 0.55 parts of zirconium nitride, 0.12 parts of zirconium titanate, 2.1 parts of copper calcium titanate, of which The crystal particle size of zinc is about 30 nanometers. Wherein the conductive electrode is made of silver material.

[0020] The safe and environment-friendly non-linear piezoresistor of the present invention is suitable for the overvoltage absorption of the rotor side of the generator and the overvoltage absorption of the DC side of the rectified excitation power supply.

Embodiment 3

[0022] A safe and environment-friendly non-linear varistor, which is composed of varistor ceramic sheets and conductive electrode gold, and the varistor chip is composed of the following materials in parts by weight: 240 parts of zinc oxide, 1.50 parts of manganese dioxide, 0.30 parts of silicon dioxide, 0.28 parts of titanium dioxide, 0.80 parts of nine cobalt octasulfide, 0.80 parts of nickel trisulfide, 0.10 parts of silicon carbide, 0.60 parts of zirconium nitride, 0.10 parts of zirconium titanate, 2.0 parts of copper calcium titanate, of which The crystal particle size of zinc is about 30 nanometers. Wherein the conductive electrode is made of copper material.

[0023] The safe and environment-friendly non-linear piezoresistor of the present invention is suitable for the overvoltage absorption of the rotor side of the generator and the overvoltage absorption of the DC side of the rectified excitation power supply.

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Abstract

The invention discloses a safe environment-friendly nonlinear piezoresistor and application thereof. The safe environment-friendly nonlinear piezoresistor is composed of a piezoresistor ceramic wafer and a conductive electrode. The piezoresistor ceramic wafer is composed of zinc oxide, manganese dioxide, silicon dioxide, titanium dioxide, nonacobalt octasulfate, dinickel trisulfate, silicon carbide, zirconium nitride, zirconium titanate and copper calcium titanate. The surface density of the piezoresistor ceramic wafer is increased, the characteristics of the piezoresistor are improved, and the current impact resistance and nonlinear coefficient of the resistor are enhanced, so that the piezoresistor has higher voltage gradient and favorable electric properties. The overvoltage response speed reaches the nanosecond level; and the piezoresistor can quickly restore without after flow after overvoltage. The piezoresistive material is safe and nontoxic, and is harmless to the human body and environment.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a safe and environment-friendly nonlinear piezoresistor and its application. Background technique [0002] The varistor is a resistance element whose resistance changes non-linearly with the applied voltage, that is, when the applied voltage exceeds a certain threshold voltage, the resistance changes rapidly. Sensitive electronic components that can be used repeatedly without damage, also known as "surge absorbers", are mainly used to protect electronic products or electronic components from the effects of switches or lightning strikes. When the varistor is not working, it has a high impedance (several megohms) relative to the electronic components to be protected, and it will not change the design circuit characteristics, but when the instantaneous surge voltage appears (more than the varistor collapse voltage), the impedance of the varistor will become low, only ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/453H01C7/112
CPCC04B35/453C04B2235/3208C04B2235/3232C04B2235/3236C04B2235/3244C04B2235/3267C04B2235/3275C04B2235/3279C04B2235/3281C04B2235/3418C04B2235/3826C04B2235/3886C04B2235/42H01C7/112
Inventor 罗建国何茂艳张杰胡德志
Owner NORTH CHINA INST OF SCI & TECH
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