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: 2011-05-04
上海上纳电工器材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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Experimental program
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Effect test

Embodiment 1

[0022] Example 1: 80% (weight percent) of nano-zinc oxide is matched with 20% of nano-powder additives; 20% of 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 plate is formed by a two-way press, and after sintering at 1000 ℃, the obtained High 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; The high-current-resistant nanocomposite insulating coating is made up of nanoscale functional coating and epoxy oxazolidinone resin; the ratio of the two is 20:80 (weight percent); the nanoscale functional filler treated with organic coating adopts nanoscale For silica, weigh 20% (by weight) of lauric acid-treated silica and 80% (by weight) of epoxy oxazolidinone resin. The ...

Embodiment 2

[0023]Example 2: 95% (weight percent) nano-zinc oxide is matched with 5% nano-powder additive; the 5% nano-powder additive includes nano antimony oxide 2.5%, nano bismuth oxide 0.9%, 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 plate 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; The high-current-resistant nanocomposite insulating coating is made up of nanoscale functional coating and epoxy oxazolidinone resin; the ratio of the two is 30:70 (weight percent); the nanoscale functional filler treated with organic coating adopts nanoscale For chromium oxide, weigh 30% (by weight) of lauric acid-treated chromium oxide and 70% (by weight) of epoxy oxazolidone resi...

Embodiment 3

[0024] Embodiment 3: 85% (weight percent) of nano-zinc oxide is matched with 15% of nano-powder additives; 15% of nano-powder additives include nano-antimony oxide 8.6%, nano-bismuth oxide 3.4%, nano-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 plate 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; The high-current-resistant nanocomposite insulating coating is made up of nanoscale functional coating and epoxy oxazolidone resin; the ratio of the two is 25:75 (weight percent); the nanoscale functional filler treated with organic coating adopts nanoscale For titanium oxide, weigh 25% (by weight) of lauric acid-treated titanium oxide and 75% (by weight) of epoxy oxazol...

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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-flow nanocomposite 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] Surge arrester is a protection device that can absorb overvoltage energy and limit overvoltage amplitude. When in use, install the arrester near the protected equipment and connect it in parallel with the protected equipment. The protective characteristics of the arrester are the basis for the insulation coordination of power transmission and distribution equipment. The arrester with excellent performance can limit the overvoltage in the power system to a level that is harmless to the insulation. Improving the protection performance of the arrester can not only improve the operational reliability of the power transmission and distribution system, but also reduce the insulation level of electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/12H01C7/10
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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