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Solid-liquid combined preparation method of voltage-dependent resistor

A technology of varistor and preparation steps, applied in varistor, varistor core, resistance manufacturing and other directions, can solve the problems of poor realization of liquid phase method and insufficient stability of solid phase calcination, and achieve stability Good, meet the effect of industrial production requirements

Inactive Publication Date: 2016-11-23
HUAIYUAN JINHAO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of varistors is mostly prepared by solid-phase calcination or liquid-phase colloidal methods, but the two types of methods have their own defects. The stability of solid-phase calcination is not good enough, and the liquid-phase method is poor in actual production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0011] A kind of solid-liquid combination preparation method of varistor, take 54% ZnO, 35% TiO2, 3.7% Sb2O3, 3.3% ZrO2, 2.8% MnO2, 1.2% SiC according to mass percentage, its specific preparation steps for:

[0012] (1) Mix ZnO and TiO2, add the same mass of pure water and stir for 3 minutes, then put it in a stirring and grinding equipment and grind it for 2 hours, put it in a vacuum oven and dry it for 10 minutes to obtain the mixture 1;

[0013] (2) Mix Sb2O3, ZrO2, MnO2 and SiC, dissolve them with a 46% polyethylene glycol solution twice the mass of the mixture, and then add 37% acetic acid solution and fully stir for 20 minutes after sealing the ultrasonic for 10 minutes. Let it stand for another 12 hours to obtain a wet gel, and then place the wet gel in a vacuum oven to dry for 15 minutes to obtain dry gel 2;

[0014] (3) Mix the mixture 1 and the dry glue 2, put them into a ball mill and grind them for 18 hours, set the rotating speed of the cylinder to 20rpm, put the...

specific Embodiment 2

[0015] A kind of solid-liquid combination preparation method of varistor, take 54% ZnO, 35% TiO2, 3.7% Sb2O3, 3.3% ZrO2, 2.8% MnO2, 1.2% SiC according to mass percentage, its specific preparation steps for:

[0016] (1) Mix ZnO and TiO2, add the same mass of pure water and stir for 5 minutes, then put it in a stirring and grinding equipment for grinding for 3 hours, put it in a vacuum oven and dry it for 15 minutes to obtain the mixture 1;

[0017] (2) Mix Sb2O3, ZrO2, MnO2 and SiC, dissolve them with a 46% polyethylene glycol solution that is twice the mass of the mixture, and then add 37% acetic acid solution and fully stir for 30 minutes after sealing the ultrasound for 15 minutes. Let it stand for another 15 hours to obtain a wet gel, and then place the wet gel in a vacuum oven to dry for 20 minutes to obtain dry gel 2;

[0018] (3) Mix the mixture 1 and the dry glue 2 and put them into a ball mill to grind for 24 hours, set the cylinder speed to 30rpm, put them into a mo...

specific Embodiment 3

[0019] A kind of solid-liquid combination preparation method of varistor, take 54% ZnO, 35% TiO2, 3.7% Sb2O3, 3.3% ZrO2, 2.8% MnO2, 1.2% SiC according to mass percentage, its specific preparation steps for:

[0020] (1) Mix ZnO and TiO2, add the same mass of pure water and stir for 4 minutes, then put it into a stirring and grinding equipment and grind it for 2.5 hours, put it in a vacuum oven and dry it for 13 minutes to obtain the mixture 1;

[0021] (2) Mix Sb2O3, ZrO2, MnO2 and SiC, dissolve them with a 46% polyethylene glycol solution twice the mass of the mixture, and then add 37% acetic acid solution and fully stir for 25 minutes after sealing the ultrasound for 13 minutes. Let it stand for another 14 hours to obtain a wet gel, and then place the wet gel in a vacuum oven to dry for 18 minutes to obtain dry gel 2;

[0022] (3) Mix the mixture 1 and the dry glue 2 and grind them in a ball mill for 21 hours, set the cylinder speed to 25rpm, put them into a molding machine...

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PUM

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Abstract

The invention discloses a solid-liquid combined preparation method of a voltage-dependent resistor. The solid-liquid combined preparation method comprises the specific preparation steps that 1, ZnO and TiO2 are mixed, same mass of pure water is added, stirring is performed, then the mixture is put in a stirring and grinding device for grinding, then the mixture is put in a vacuum drying oven, and a mixed material 1 is obtained after drying; 2, Sb2O3, ZrO2, MnO2 and SiC are mixed, dissolution is performed by using a polyethylene glycol solution, airtight ultrasonic operation is performed, then an acetic acid solution is added and fully stirred, then standing is performed for 12-15 hours to obtain wet gel, then the wet gel is put in the vacuum drying oven, and dry gel 2 is obtained after drying; 3, the mixed material 1 and the dry gel 2 are mixed and put in a ball mill for grinding, the mixture is put in a forming press and pressed into a square sheet after the grinding is completed and then is put in a sintering kiln for sintering. The solid-liquid combined preparation method has the advantages that the advantages of solid-phase and liquid-phase methods are integrated, the prepared voltage-dependent resistor is good in stability, and its preparation process can also meet the requirements of industrial production.

Description

technical field [0001] The invention relates to the technical field of electronic component preparation, in particular to a solid-liquid combination preparation method of a piezoresistor. Background technique [0002] The varistor is a voltage limiting protection device. Utilizing the nonlinear characteristics of the varistor, when an overvoltage occurs between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby realizing the protection of the subsequent circuit. Its biggest feature is that when the voltage applied to it is lower than its threshold value, the current flowing through it is extremely small, which is equivalent to a closed valve. When the voltage exceeds it, its resistance value becomes smaller, so that It makes the current flowing through it increase sharply and the influence on other circuits does not change much, so as to reduce the influence of overvoltage on subsequent sensitive circuits. Utilizi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C17/30H01C17/00H01C7/108
CPCH01C17/30H01C7/108H01C17/00
Inventor 姚坤姚望王传稳陈静高尚
Owner HUAIYUAN JINHAO ELECTRONICS TECH CO LTD