Preparation method of high-gradient zinc oxide piezoresistor high-resistance layer with high through-flow capacity

A varistor and high-resistance layer technology, applied in the field of high-gradient zinc oxide varistor high-resistance layer preparation, to achieve the effects of preventing cracks and flashover, increasing mechanical strength, and increasing insulation strength
CN106587985AActive Publication Date: 2017-04-26TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2017-04-26

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Abstract

The invention discloses a preparation method of a high-gradient zinc oxide piezoresistor high-resistance layer with the high through-flow capacity. According to the method, a blank body and the high-resistance layer are included. The high-resistance layer wraps the blank body. The high-resistance layer is prepared from ZnO, Fe2O3, Bi2O3, Sb2O3, SiO2, MnO2, Li2CO3 and Ni2O3. The blank body is the zinc oxide piezoresistor blank body and is prepared from ZnO, Fe2O3, Bi2O3, Sb2O3, SiO2, MnO2, Li2CO3 and Ni2O3. The method has the advantages that the mechanical strength of a piezoresistor is improved, the phenomena of cracking and flashover are avoided, the dielectric strength of the side face of the piezoresistor body can be improved, and the through-flow area of the body is not affected.
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Description

technical field

[0001] The invention relates to the field of electronic components, in particular to a method for preparing a high-resistance layer of a high-gradient zinc oxide varistor with high flow capacity. Background technique

[0002] Through production practice, it is concluded that the high-resistance layer has a direct impact on various properties of the resistor, especially the residual voltage ratio, square wave capacity and high current of the resistor. In the national standard GB11032-2010 "AC Gapless Metal Oxide Surge Arrester", the surge arresters with nominal discharge currents of 5kA and 10kA are required to have the ability to withstand two 4 / 10μs high current shocks, and the peak value of the shock current requires 65kA and 100KA. The voltage gradient E1mA of the zinc oxide varistor in the high-performance zinc oxide arrester is increased, and the distance between the two electrodes of the varistor sheet is shortened. In the current reversal region of t...

Claims

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