Ultrahigh-voltage pulse strontium titanate annular piezoresistor and preparation method thereof

By introducing specific components and nanomaterials into the strontium titanate annular varistor, the pulse resistance, nonlinear coefficient and capacitance value of the resistor are improved, and the problem of insufficient performance of traditional resistors is solved and the development of high-performance resistors is realized.

CN119638407APending Publication Date: 2025-03-18DONGGUAN E-LEO ELECTRONICS CO LTD
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Patent Information

Application Number
CN202411772692.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The traditional strontium titanate annular varistors above 48V have shortcomings in pulse resistance, nonlinear coefficient and capacitance value, and cannot meet market demand.

Method used

The formula of ultra-high voltage pulsed strontium titanate annular varistor is adopted, including strontium carbonate, barium carbonate, calcium carbonate, titanium dioxide, niobium oxide, silica, aluminum dioxide, manganese carbonate, tin dioxide and zinc oxide. The overall strength and pulse resistance of the resistance are improved through the combination of multi-layer nanofiber materials and three-dimensional composite nanomaterials.

Benefits of technology

It realizes a varistor with high pulse resistance, nonlinear coefficient and capacitance value, small loss and high flexural strength, which meets the market's demand for high-performance resistors.

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Abstract

The invention relates to the technical field of piezoresistor preparation, in particular to an ultrahigh-voltage pulse strontium titanate annular piezoresistor and a preparation method thereof. Comprising the following components in parts by weight: 20 to 25 parts of strontium carbonate, 20 to 25 parts of barium carbonate, 11 to 15 parts of calcium carbonate, 33 to 36 parts of titanium dioxide, 0.17 to 0.20 part of niobium oxide, 0.1 to 0.3 part of silicon dioxide, 0.01 to 0.20 part of aluminum oxide, 0.01 to 0.50 part of manganese carbonate, 5 to 10 parts of tin dioxide, 0.01 to 0.20 part of zinc oxide and 0.2 to 0.7 part of a nano material. The aluminum oxide, the manganese carbonate, the tin dioxide and the zinc oxide are added on the basis of a traditional formula, the purposes of improving the pulse resistance, improving the nonlinear coefficient and the capacitance value and reducing the loss are achieved, meanwhile, the introduced multi-layer nanofiber material and the three-dimensional composite nanomaterial are matched with each other, and therefore the pulse resistance is improved. The integral strength of the material can be effectively enhanced, so that the formed annular piezoresistor is compact in structure, high in strength, strong in external force resistance and good in breaking strength, thereby achieving the effect of enhancing the strength of a porcelain body.
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