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Lead-free high-insulation ceramic coating zinc oxide arrester valve disc and preparation method thereof

一种陶瓷涂层、高绝缘的技术，应用在电阻器、电阻制造、压敏电阻器芯体等方向，能够解决浪费电能、结合性不好、使用温度不高等问题，达到避免工艺繁琐、扩大使用范围、使用温度高的效果

Inactive Publication Date: 2017-05-31
TDK ZHUHAI FTZ CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main component of the lead-containing side glaze is PbO, and PbO is a toxic substance. When the green body is sintered or processed at high temperature, it is volatile and will cause long-term irreversible harm to human society and nature. It does not meet the requirements of today's world. Environmentally friendly development trend
[0004] For the organic coating, due to its poor bonding with the resistor blank, the surface is easy to absorb water or produce air bubbles, which makes its withstand overvoltage worse. In addition, the thermal expansion coefficient of the epoxy coating is different from that of the resistor blank. The body difference will be large, and the epoxy resin may crack when it is impacted, resulting in flashover of the side insulation coating
The use temperature of organic coatings is not high, which also limits the scope of use of this type of zinc oxide resistors to a certain extent
[0005] The traditional inorganic coating needs to pre-fire the resistor body before it can be applied, which brings a problem of secondary sintering. Compared with other processes, there is one more process, which leads to cumbersome process and high sintering times. increase, the sintering time is prolonged, the stability control of the electrical properties of the resistor sheet becomes worse, and it is a great waste of electric energy, which is not conducive to environmental protection, and is also not conducive to the energy saving and emission reduction requirements of industrial production.

Method used

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  • Lead-free high-insulation ceramic coating zinc oxide arrester valve disc and preparation method thereof
  • Lead-free high-insulation ceramic coating zinc oxide arrester valve disc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. The raw materials are configured according to the following weight percentages: ZnO: 88.4%; Bi2O3: 2.5%; Co3O4: 0.6%; Mn3O4: 0.4%; Sb2O3: 7%; NiO: 0.3%; SiO2: 0.8%.

[0032] 2. Prepare ceramic coating powder according to the above ratio. The ratio of the total powder mass, deionized water mass, and agate ball mass is 3:2:4. Add ammonium polyacrylate dispersant, and its dosage is the total powder mass 0.5% of the mass was put into a 10L polyurethane ball mill tank, and ball milled with a tank ball mill for 48 hours, and the speed was set at 450r / min. The ball-milled slurry is taken out, sieved, put into an oven for drying, and then pulverized with a pulverizer and sieved; thus the ZnO ceramic coating powder is prepared.

[0033] 3. Take a 10% PVA solution by mass percentage and a 1% ammonium polyacrylate dispersant in an amount of the total mass of the powder to obtain a mixed solution and sieve it. Take the above-mentioned ceramic coating powder, the total weight of...

Embodiment 2

[0036] 1. The raw materials are configured according to the following weight percentages: ZnO: 89.2%; Bi2O3: 2.0%; Co3O4: 1.0%; Mn3O4: 0.8%; Sb2O3: 5.0%; NiO: 0.5%; SiO2: 1.5%.

[0037] 2. Prepare ceramic coating powder according to the above ratio. The ratio of the total powder mass, deionized water mass, and agate ball mass is 3:2:4. Add ammonium polyacrylate dispersant, and its dosage is the total powder mass 1.0% of the mass was put into a 10L polyurethane ball mill tank, and ball milled with a tank ball mill for 48 hours at a speed of 450r / min. The ball-milled slurry is taken out, sieved, put into an oven for drying, and then pulverized with a pulverizer and sieved; thus the ZnO ceramic coating powder is prepared.

[0038] 3. Take a 6.5% PVA solution by mass percentage and a 1% ammonium polyacrylate dispersant in an amount of the total mass of the powder to obtain a mixed solution and sieve it. Take the above-mentioned ceramic coating powder, the total weight of the powd...

Embodiment 3

[0041] 1. The raw materials are configured according to the following weight percentages: ZnO: 86%; Bi2O3: 1.0%; Co3O4: 0.5%; Mn3O4: 0.2%; Sb2O3: 3%; NiO: 0.2%; SiO2: 1%.

[0042] 2. Prepare ceramic coating powder according to the above ratio. The ratio of the total powder mass, deionized water mass, and agate ball mass is 3:2:4. Add ammonium polyacrylate dispersant, and its dosage is the total powder mass 0.5% of the mass was put into a 10L polyurethane ball mill tank, and ball milled with a tank ball mill for 48 hours, and the speed was set at 450r / min. The ball-milled slurry is taken out, sieved, put into an oven for drying, and then pulverized with a pulverizer and sieved; thus the ZnO ceramic coating powder is prepared.

[0043] 3. Take a 5% PVA solution by mass percent and a 1% ammonium polyacrylate dispersant with an amount of the total mass of the powder to obtain a mixed solution and sieve it. Take the above-mentioned ceramic coating powder, the total weight of the p...

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Abstract

The invention discloses a lead-free high-insulation ceramic coating zinc oxide arrester valve disc and a preparation method thereof. The lead-free high-insulation ceramic coating zinc oxide arrester valve disc comprises an arrester valve disc body 1, wherein the side surface of the arrester valve disc body is coated with a lead-free high-insulation ceramic coating layer 2; the upper surface and the lower surface of the arrester valve disc body are coated with aluminum layers 3; the lead-free high-insulation ceramic coating layer is prepared from the following raw materials in percentage by mass: 86 to 95 percent of ZnO, 1.0 to 3.0 percent of Bi2O3, 0.5 to 1.5 percent of Co3O4, 0.2 to 1.0 percent of Mn3O4, 3.0 to 9.0 percent of Sb2O3, 0.2 to 1.0 percent of NiO, 1.0 to 3.0 percent of SiO2, a PVA (Polyvinyl Alcohol) solution and agate grinding balls. A formula of the lead-free high-insulation ceramic coating zinc oxide arrester valve disc disclosed by the invention contains no a lead component; during a preparation process of the lead-free high-insulation ceramic coating zinc oxide arrester valve disc, harmful substances cannot be generated, the lead-free high-insulation ceramic coating zinc oxide arrester valve disc is free from lead, is friendly to the society and the environment and is beneficial for environment protection, and a trend of sustainable development of the present world can be accorded.

Description

technical field [0001] The invention relates to the technical field of electrical ceramics, in particular to a lead-free high-insulation ceramic coating zinc oxide surge arrester valve plate and a preparation method thereof. Background technique [0002] Zinc oxide arrester is a kind of overvoltage protection device. As the core component of zinc oxide arrester, its performance directly affects the use of the arrester, and the quality of the side insulation coating will directly determine the arrester's ability to withstand large currents. The level of shock. At present, the side coating materials of zinc oxide surge arrester valve plates include lead-containing side glaze, organic coatings mainly epoxy coatings and organic silicon coatings, and traditional inorganic coatings. [0003] The main component of the lead-containing side glaze is PbO, and PbO is a toxic substance. When the green body is sintered or processed at high temperature, it is volatile and will cause long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622C04B41/87H01C7/112H01C17/00H01C17/30
CPCC04B35/453C04B35/62222C04B41/009C04B41/5049C04B41/87H01C7/112H01C17/00H01C17/30C04B2235/3263C04B2235/3279C04B2235/3277C04B2235/3294C04B2235/3418C04B2235/3298C04B41/5027C04B41/5035C04B41/4539C04B41/0072H01C17/06546C04B41/90C04B35/6261C04B35/62625C04B41/52C04B2111/00844C04B2235/3284C04B2235/72C04B35/6264C04B35/63416C04B41/4572C04B41/4543C04B41/4574C04B41/5155C04B35/638C04B35/64C04B41/4568C04B41/522C04B41/88H01C7/12
Inventor 裴广强顾涛姚政时雯施利毅
Owner TDK ZHUHAI FTZ CO LTD
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