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Method for preparing high throughflow nanometre composite lightning arrester valve plate

A nano-composite material and surge arrester technology, which is applied in overvoltage protection resistors, varistors, etc., can solve the problems of inorganic side glaze easy to absorb moisture, large filler particle size, and high price, so as to improve the anti-high current impact performance, Improved flow capacity and low manufacturing cost

Active Publication Date: 2005-01-26
上海上纳电工器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned patent documents relate to the inorganic side insulating coating, which is not only expensive, but also has the disadvantage that the inorganic side glaze is easy to absorb moisture during actual use. In addition, most of the organic side insulating coatings involved are micron-sized powder fillers, and the particle size of the filler is relatively small. Large, generally around 0.2 μm
Because most of the insulating varnish coatings on valve plates use high-temperature baking and curing processes, holes or pinholes are easily formed in the coating film during the curing process of organic coatings, which is not conducive to the formation of a complete, continuous and dense insulating film. Therefore, conventional insulating coatings Difficult to resist ultra-high current impact
Its side insulation performance cannot meet the technical indicators of the international IEC-60099-4

Method used

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  • Method for preparing high throughflow nanometre composite lightning arrester valve plate

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1: Combine 80% (weight percentage) of nano zinc oxide with 20% nano powder additives; 20% of the nano powder additives include nano antimony oxide 10%, nano bismuth oxide 5.6%, nano oxide Silicon 2.4%, nano chromium oxide 1%, nano manganese oxide 1% mixed powder; after the organic lauric acid coating treatment, the material is fully mixed, and then the valve disc is formed by a two-way press and sintered at 1000 ℃ to produce High-pass flow nano zinc oxide valve body. The valve body is sprayed with aluminum and the side is coated with an inorganic high-resistance layer of lead oxide; then the side of the valve is coated with a high-current-resistant nano-insulating composite paint. The high-current resistant nano composite insulating coating is made of nano-level functional coating and epoxy oxazolidone resin; the ratio of the two is 20:80 (weight percentage); the nano-level functional filler treated by organic coating adopts nano For silica, weigh 20% (weight percen...

Embodiment 2

[0023]Example 2: Combine 95% (weight percentage) of nano zinc oxide with 5% nano powder additives; 5% of nano powder additives include nano antimony oxide 2.5%, nano bismuth oxide 0.9%, and nano silicon oxide 0.5%, nano chromium oxide 0.7%, nano manganese oxide 0.4% mixed powder; after the organic lauric acid coating treatment, the material is fully mixed, and then the valve disc is formed by a two-way press, and after sintering at 1100 ℃, a high pass Flow nano zinc oxide valve body. The valve body is sprayed with aluminum and the side is coated with an inorganic high-resistance layer of chromium oxide; then the side of the valve is coated with a high-current-resistant nano-insulating composite coating. The high-current resistant nano composite insulating coating is prepared by nano-level functional coating and epoxy oxazolidone resin; the ratio of the two is 30:70 (weight percentage); the nano-level functional filler treated by organic coating adopts nano For chromium oxide, weig...

Embodiment 3

[0024] Example 3: Combine 85% (weight percentage) of nanometer zinc oxide with 15% of nanometer powder additives; 15% of nanometer powder additives include 8.6% nanometer antimony oxide, 3.4% nanometer bismuth oxide, and nanometer silicon oxide 1.6%, nano-chromium oxide 0.8%, nano-manganese oxide 0.6% mixed powder; after the organic lauric acid coating treatment, the material is fully mixed, and then the valve disc is formed by a two-way press, and after sintering at 1100 ℃, a high pass Flow nano zinc oxide valve body. The valve body is sprayed with aluminum and the side is coated with an inorganic high-resistance layer of chromium oxide; then the side of the valve is coated with a high-current-resistant nano-insulating composite coating. The high-current resistant nano composite insulating coating is prepared by nano-level functional coating and epoxy oxazolidone resin; the ratio of the two is 25:75 (weight percentage); the nano-level functional filler treated by organic coating ...

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Abstract

The invention relates to and provides a method for preparing high throughflow nano composite arrester varistor, and its characteristic: it adopts nano ZnO material as the main material, adds nano powder additive in 5-20wt% to mix them fully, makes press forming by a two-way press to form the varistor, then sinters at 900-1100 deg.C to make a main body of ZnO varistor; sprays aluminum on the main body and coats an inorganic high resistance layer on the side of the ZnO varistor, where the high resistance layer is mainly made of lead oxide or chrome oxide; then coats the side with heavy current-withstanding nano insulating composite coating prepared of nano functional fillings and epoxy oxazolidinone resin in the ratio of 20-30 to 70-80 (wt%), uniformly roll-coats the prepared nano insulating composite coating on the side, dries at a high temperature of 300 deg.C, and makes it.

Description

Technical field [0001] The invention relates to a preparation method of a high-throughflow nanocomposite material arrester valve sheet. It belongs to the technical field of chemical compound preparation or the technical field of functional ceramic material manufacturing. Background technique [0002] Lightning arrester is a kind of protection equipment that can absorb overvoltage energy and limit the amplitude of overvoltage. When in use, install the arrester near the protected equipment and connect it in parallel with the protected equipment. The protection characteristics of lightning arresters are the basis for the insulation coordination of power transmission and distribution equipment. A lightning arrester with excellent performance can limit the overvoltage in the power system to a level that is harmless to insulation. Improving the protection performance of the arrester can not only improve the operational reliability of the power transmission and distribution system, but ...

Claims

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Application Information

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IPC IPC(8): H01C7/10H01C7/12
Inventor 施利毅钟庆东张剑平方建慧张大卫
Owner 上海上纳电工器材有限公司
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