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A kind of safe surge protector valve plate material and its preparation method

A surge protector and safety technology, which is applied in the field of safety surge protector valve material and its preparation, can solve the problem that the highest temperature point of the valve chip cannot be conducted quickly, and the uniformity of the tablet cannot be completely consistent with the sintering temperature , the thermal tripping device failed to disengage in time, etc., to achieve the effects of green materials, avoiding explosions and fires, and good aging performance

Active Publication Date: 2018-08-07
GUANGXI NEW FUTURE INFORMATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, due to the large end area of ​​the lightning protection valve chip on the market, during the production process, the uniformity of the pressing sheet is not completely consistent, and the sintering temperature has a gradient effect of high edge temperature and low middle temperature. During the sintering process, the lightning protection valve Bi in the film 2 o 3 , Sb 2 o 3 Low-melting-point substances volatilize at high temperatures, and the low-melting-point substances from the side edge to the middle form a concentration difference distribution. The point cannot be quickly conducted to the thermal trip device, resulting in the failure of the thermal trip device to disengage in time, which has a serious impact on safety

Method used

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  • A kind of safe surge protector valve plate material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of a safety type surge protector valve plate is carried out according to the following steps:

[0024] 1. First weigh 500 grams of industrial high-grade ZnO powder into the ball mill tank, and then weigh and analyze the pure raw material 12.4151 grams Bi 2 o 3 , 7.9434 g Co 3 o 4 , 16.6442 g Sb 2 o 3 , 4.7398 g MnCO 3 , 3.6721 g Ni 2 o 3 , 0.2345 g ZrO 2 , 0.3049 g SiO 2 , 1.4341 g SnO 2 , 0.1976 g MgF 2 , 0.0952 g Al(NO 3 ) 3 9H 2 O, 0.1616 g AgNO 3 , 0.0588 g H3 BO 3 In the ball mill tank, add 2 kg of zirconium balls, 1 kg of deionized water and 10 g of dispersant, wet ball mill and mix for 4 hours, and then quickly place the ball-milled slurry in an oven at 140°C for rapid drying until completely dried.

[0025] 2. Crush the dried powder, add 125 grams of polyvinyl alcohol aqueous solution with a mass concentration of 5%, then granulate, dry in an oven at 85°C, and grind to make it completely pass through a 120-mesh sieve Net, th...

Embodiment 2

[0033] A preparation method of a safety type surge protector valve plate is carried out according to the following steps:

[0034] 1. First weigh 500 grams of industrial high-grade ZnO powder into the ball mill tank, and then weigh and analyze the pure raw material 14.1890 grams Bi 2 o 3 , 6.4160 g Co 3 o 4 , 17.3843 g Sb 2 o 3 , 4.2295 g MnCO 3 , 4.1968 g Ni 2 o 3 , 0.3127 g ZrO 2 , 0.3812 g SiO 2 , 0.8605 g SnO 2 , 0.3952 g MgF 2 , 0.1238 g Al(NO 3 ) 3 9H 2 O, 0.1293 g AgNO 3 , 0.0745 g H 3 BO 3 Then add 1.7 kg of zirconium balls, 0.8 kg of deionized water and 10 g of dispersant to the ball milling jar, and mix for 6 hours by wet ball milling, and then quickly place the ball-milled slurry in an oven at 130°C for rapid drying until it is completely dried.

[0035] 2. Grind the dried powder, add 130 grams of polyvinyl alcohol aqueous solution with a mass concentration of 5%, then granulate, and dry in an oven at 100°C, then grind, and make it completely pass 1...

Embodiment 3

[0043] A preparation method of a safety type surge protector valve plate is carried out according to the following steps:

[0044] 1. First weigh 500 grams of industrial high-grade ZnO powder into the ball mill tank, and then weigh and analyze 17.1872 grams of pure raw material Bi 2 o 3 , 5.3598 g Co 3 o 4 , 20.3934 g Sb 2 o 3 , 4.0206 g MnCO 3 , 4.2071 g Ni 2 o 3 , 0.0783 g ZrO 2 , 0.5732 g SiO 2 , 0.9585 g SnO 2 , 0.5943 g MgF 2 , 0.1431 g Al(NO 3 ) 3 9H 2 O, 0.1296 g AgNO 3 , 0.0629 g H 3 BO 3 In the ball mill tank, add 2.2 kg of zirconium balls, 1.1 kg of deionized water and 10 g of dispersant, wet ball mill and mix for 8 hours, then quickly place the ball-milled slurry in an oven at 120°C for rapid drying until completely dried.

[0045] 2. Grind the dried powder, add 115 grams of polyvinyl alcohol aqueous solution with a mass concentration of 5%, then granulate, and dry in an oven at 120°C, then grind, and make it completely pass through 80 mesh sieve, ...

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PUM

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Abstract

The invention mainly discloses a safety surge protector valve plate material and a preparation method thereof. The surge protector valve plate is made of industrial superior ZnO powder, and analytically pure raw materials Bi2O3, Co3O4, Sb2O3, MnCO3, Ni2O3, ZrO2, SiO2, SnO2, MgF2, Al(NO3)3·9H2O, AgNO3, H3BO3 Ball mill mixing, granulation, dry pressing molding, debinding, and then apply Y(NO3)3 aqueous solution on the sides of the degummed green body for diffusion treatment, and then obtain sintered tiles through drying and sintering processes, and sinter A good ceramic piece is screen-printed with silver, reduced, welded, and encapsulated to obtain a safe surge protector valve piece. The preparation method of the invention is simple in process, and the prepared varistor has low cost, strong flow resistance, good aging performance, high energy density, concentrated power frequency breakdown point, strong safety performance, environmental protection, and can realize mass industrialization Production.

Description

technical field [0001] The invention relates to a safety type surge protector valve plate material and a preparation method thereof, belonging to the technical field of electronic component preparation. Background technique [0002] With the extensive use of zinc oxide surge protector lightning protection valves in the lightning protection of power systems, people are paying more and more attention to the safety of lightning protection valves, and the main focus is on the failure protection of lightning protection valves. In order to prevent the varistor short-circuit failure from causing combustion and explosion accidents to the system, engineers and technicians have adopted methods such as series current fuses, temperature fuses, mechanical tripping and making thermally protected varistors TMOV, such as a varistor, The patent number is 200810122687.0, the varistor with thermal protection function, the patent number is 200610168133.5, the varistor with thermal protection fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/453C04B35/622C04B41/88
Inventor 褚冬进苏宇陈军杨柳钟璇周军伟刘丹
Owner GUANGXI NEW FUTURE INFORMATION IND