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A kind of high potential gradient zinc oxide varistor material and its preparation method

A varistor and zinc oxide technology, which is applied in the field of high potential gradient zinc oxide varistor materials and their preparation, can solve the problems of restricting the export and use range of products, and can not meet the requirements, and achieves good flow capacity and energy tolerance. Capability, size reduction, varistor voltage stabilization effect

Active Publication Date: 2018-08-31
GUANGXI NEW FUTURE INFORMATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, with the development of high technology, miniaturization, miniaturization and integration have become hot spots in the market, and research on high potential gradient zinc oxide varistor materials has also become a hot spot for many scientists, but many studies only focus on the basic three The study of parameter performance ignores the advantages of important and excellent electrical properties, such as a high potential gradient zinc oxide varistor material and its preparation method, the patent number is 201110421092.7, a high potential gradient ZnO-based varistor ceramic material and its preparation method, The patent number is 201310262113.4, a low-temperature sintering method for high potential gradient varistor ceramic materials, the patent number is 201310021167.1, the preparation and application of high potential gradient zinc oxide varistor materials, the patent number is 200510025398.5, and some high potential gradient oxidation The zinc varistor patent is due to the addition of hexavalent Cr element, such as high potential gradient zinc oxide varistor film and its production method and application, the patent number is 201110451769.1, these patents cannot meet the requirements of the EU legislation on the restriction on electronic and electrical equipment Instructions on the Use of Certain Hazardous Components" standard, which limits the export and use of products, so starting from the intrinsic structure of the product, there is still a lot of room for technological breakthroughs in terms of material formulation improvement and process improvement

Method used

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  • A kind of high potential gradient zinc oxide varistor material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of a high potential gradient zinc oxide varistor is carried out according to the following steps:

[0026] 1. First, accurately weigh 57.12 grams of analytically pure raw material with a purity ≥ 99% 2 o 3 , 1.5 g B 2 o 3 , 0.8g Ag 2 O, 0.4 g Al 2 o 3 , 6.92 grams of SiO 2 , 8.56 g ZrO 2 , 15.5 g SnO 2 , 7 grams of MgO, 2.2 grams of K 2 CO 3 , put it into a ball mill jar, add 400 grams of zirconium balls and 200 grams of deionized water, and mix it with a planetary ball mill for 4 hours at a speed of 100 rpm, then quickly dry it in an oven at 140°C until it is completely dried;

[0027] 2. Crush the dried powder in step 1, put it into an alumina crucible, preheat the alumina crucible in a muffle furnace at 400°C for 45 minutes, and then transfer it to a high temperature muffle furnace at 1100°C to keep it warm After 60 minutes, a uniform and clear glass liquid was formed.

[0028] 3. Quickly pour the molten glass melted in step 2 into 70...

Embodiment 2

[0038] A preparation method of a high potential gradient zinc oxide varistor is carried out according to the following steps:

[0039] 1. First, accurately weigh 57.644 grams of Bi, an analytically pure raw material with a purity ≥ 99% 2 o 3 , 1.606 g B 2 o 3 , 0.6 g Ag 2 O, 0.3 g Al 2 o 3 , 7.6467 grams of SiO 2 , 6.2733 g ZrO 2 , 17.26 g SnO 2 , 6.67 grams of MgO, 2 grams of K 2 CO 3 , put it into a ball mill jar, add 400 grams of zirconium balls and 200 grams of deionized water, and mix it with a planetary ball mill for 4 hours at a speed of 100 rpm, then quickly dry it in an oven at 140°C until it is completely dried;

[0040] 2. Crush the dried powder in step 1, put it into an alumina crucible, preheat the alumina crucible in a muffle furnace at 300°C for 30 minutes, and then transfer it to a high temperature muffle furnace at 1050°C to keep it warm After 60 minutes, a uniform and clear glass liquid was formed.

[0041] 3. Quickly pour the molten glass melted ...

Embodiment 3

[0051] A preparation method of a high potential gradient zinc oxide varistor is carried out according to the following steps:

[0052] 1. First, accurately weigh 53.3711 grams of analytically pure raw material with a purity ≥ 99% 2 o3 , 1.8 g B 2 o 3 , 0.7 g Ag 2 O, 0.5 g Al 2 o 3 , 8.5468 g SiO 2 , 6.5821 g ZrO 2 , 19.55 grams of SnO 2 , 7.45 grams of MgO, 1.5 grams of K 2 CO 3 , put it into a ball mill jar, add 400 grams of zirconium balls, 200 grams of deionized water, and mix it with a planetary ball mill for 4 hours at a speed of 100 rpm, then quickly dry it in an oven at 120°C until it is completely dried;

[0053] 2. Crush the dried powder in step 1, put it into an alumina crucible, preheat the alumina crucible in a muffle furnace at 300°C for 60 minutes, and then transfer it to a high temperature muffle furnace at 1050°C to keep it warm After 60 minutes, a uniform and clear glass liquid was formed.

[0054] 3. Quickly pour the molten glass melted in step 2 i...

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Abstract

The invention discloses a high potential gradient zinc oxide varistor material and a preparation method thereof. The varistor material is made of industrial superior ZnO powder with a purity of ≥99.97%, analytically pure raw materials Bi2O3, Co2O3, Sb2O3, MnCO3, Ni2O3, Y2O3, Nb2O5 with a purity of ≥99%, and self-made lead-free ultra-fine silver glass powder composition. The present invention prepares the 300V / mm~500V / mm high potential gradient zinc oxide varistor. In the present invention, by adding self-made lead-free ultra-fine silver glass powder, and adopting microwave sintering technology and pre-sintering technology, the inherent defects caused by abnormal grain growth of the product are effectively overcome, and high potential gradient zinc oxide with excellent electrical properties is prepared. Varistor.

Description

technical field [0001] The invention relates to a high-potential gradient zinc oxide varistor material and a preparation method thereof, belonging to the technical field of electronic component preparation. Background technique [0002] Zinc oxide varistors are widely used in the fields of electric power, communication, transportation, industrial control, automotive electronics, medical equipment, and household appliances due to their excellent electrical properties such as large nonlinear coefficient and strong flow capacity. In recent years, with the development of high technology, miniaturization, miniaturization and integration have become hot spots in the market, and research on high potential gradient zinc oxide varistor materials has also become a hot spot for many scientists, but many studies only focus on the basic three The study of parameter performance ignores the advantages of important and excellent electrical properties, such as a high potential gradient zinc ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/453C04B35/622
Inventor 梁自伟刘丹马新华申晓康褚冬进钟璇
Owner GUANGXI NEW FUTURE INFORMATION IND
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