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Zinc oxide piezoresistor dielectric material and preparation method thereof

A technology of varistor and dielectric material, applied in the field of zinc oxide varistor dielectric material and its preparation, can solve the problem of high energy consumption, achieve the effects of strong impulse shock resistance, simple manufacturing process and cost reduction

Active Publication Date: 2016-01-27
汕头保税区松田电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the zinc oxide varistor ceramic material in the industry is mainly a nine-component formula. The sintering of the zinc oxide varistor chip is generally fired at a high temperature of 1250-1300 ° C and a heat preservation time of about 2.5 hours (the total time is about 15 hours). into, higher energy consumption

Method used

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  • Zinc oxide piezoresistor dielectric material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this embodiment, the preparation method of the zinc oxide varistor dielectric material includes the following steps:

[0028] (1) In molar parts, 100 parts of the main component raw material ZnO and the following parts of the additive raw material: 0.95 parts of Sb 2 o 3 , 0.4 parts of Co 3 o 4 (for the introduction of 0.6 Co 2 o 3 ), 0.8 Bi 2 o 3 , 0.3 parts MnCO 3 (for the introduction of 0.3 parts of MnO 2 ), 0.3 parts of Cr 2 o 3 , 0.2 part SnO 2 , 0.3 phr SiO 2 , 0.3 parts Ni 2 o 3 , 0.3 parts boric acid, 0.3 parts AgNO 3 , and 0.3 parts of Sm 2 o 3 ;

[0029] During actual production, it can be converted into parts by weight according to the molar parts of the above-mentioned main component raw materials and each additive raw material, so as to operate;

[0030] The above ZnO, Sb 2 o 3 、 Bi 2 o 3 、Cr 2 o 3 , SnO 2 , SiO 2 、Ni 2 o 3 , used to introduce Co 2 o 3 Co 3 o 4 , and for the introduction of MnO 2 MnCO 3 All are nano-sca...

Embodiment 2

[0040] In this embodiment, the preparation method of the zinc oxide varistor dielectric material includes the following steps:

[0041] (1) In terms of molar parts, 100 parts of the main component raw material ZnO and the following parts of the additive raw material: 0.05 part of Sb 2 o 3 , 0.8 parts of Co 3 o 4 (for the introduction of 1.2 parts of Co 2 o 3 ), 1.3 Bi 2 o 3 , 0.05 parts MnO 2 , 0.05 parts of Cr 2 o 3 , 1.2 parts SnO 2 , 0.06 phr SiO 2 , 1.3 parts Ni 2 o 3 , 0.05 parts of boric acid, 0.05 parts of AgNO 3 , and 0.6 parts of Sm 2 o 3 ;

[0042] During actual production, it can be converted into parts by weight according to the molar parts of the above-mentioned main component raw materials and each additive raw material, so as to operate;

[0043] The above ZnO, Sb 2 o 3 、 Bi 2 o 3 、Cr 2 o 3 , SnO 2 , SiO 2 、Ni 2 o 3 , MnO 2 , and for the introduction of Co 2 o 3 Co 3 o 4 All are nano-scale or sub-nano-scale materials;

[0044] (2...

Embodiment 3

[0053] In this embodiment, the preparation method of the zinc oxide varistor dielectric material includes the following steps:

[0054] (1) In terms of molar parts, 100 parts of the main component raw material ZnO and the following parts of the additive raw material are equipped: 1 part of Sb 2 o 3 , 0.6 parts of Co 3 o 4 (for the introduction of 0.9 parts of Co 2 o 3 ), 1 Bi 2 o 3 , 0.4 parts MnCO 3 (for the introduction of 0.4 parts of MnO 2 ), 0.2 parts of Cr 2 o 3 , 0.2 part SnO 2 , 0.3 phr SiO 2 , 0.3 parts Ni 2 o 3 , 0.4 parts boric acid, 0.09 parts AgNO 3 , and 0.4 parts of Sm 2 o 3 ;

[0055] During actual production, it can be converted into parts by weight according to the molar parts of the above-mentioned main component raw materials and each additive raw material for easy operation.

[0056] The above ZnO, Sb 2 o 3 、Bi 2 o 3 、Cr 2 o 3 , SnO 2 , SiO 2 、Ni 2 o 3 , used to introduce Co 2 o 3 Co 3 o 4 , and for the introduction of MnO ...

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Abstract

The invention provides a zinc oxide piezoresistor dielectric material. The zinc oxide piezoresistor dielectric material is prepared from, by mole, a main component including 100 parts of ZnO and additive components including 0.05-1.3 parts of Sb2O3, 0.05-1.3 parts of Co2O3, 0.05-1.3 parts of Bi2O3, 0.05-1.3 parts of MnO2, 0.05-1.3 parts of Cr2O3, 0.05-1.3 parts of SnO2, 0.05-1.3 parts of SiO2, 0.05-1.3 parts of Ni2O3, 0.05-0.6 part of boric acid, 0.05-0.6 part of AgNO3 and 0.05-0.6 part of Sm2O3. The invention further provides a preparation method of the zinc oxide piezoresistor dielectric material. The zinc oxide piezoresistor dielectric material is high in pulse impact resistance, and is expected to be applied to anti-thunder overvoltage protection of a power lightning arrester or other power electronic circuits. The zinc oxide piezoresistor dielectric material can be sintered at medium-and-low temperature, the manufacturing process is simple, the cost of the zinc oxide piezoresistor material is greatly reduced, and the requirements of energy saving and environment friendliness are met.

Description

technical field [0001] The invention relates to a varistor material, in particular to a zinc oxide varistor dielectric material and a preparation method thereof. Background technique [0002] Zinc oxide varistor materials can be used to manufacture high-performance zinc oxide varistors, which can be used to manufacture lightning arresters or varistors, and are used in power electronic circuits to absorb abnormal overvoltages to protect circuit systems. Power electronic circuits often cause abnormal overvoltage due to lightning load switching. Zinc oxide materials have been widely used in power electronic circuits to absorb or suppress abnormal overvoltage to protect power electronic equipment from damage. [0003] At present, in the zinc oxide varistor medium on the market, the main component zinc oxide accounts for 87-93% by weight, and other components (ie additives) account for 7-13% by weight in total. As we all know, zinc oxide is the basic material of the zinc oxide v...

Claims

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Application Information

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IPC IPC(8): C04B35/453C04B35/622
Inventor 林榕黄瑞南胡勇赵明辉谢冬桔
Owner 汕头保税区松田电子科技有限公司