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Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof

A technology of insulating coating and lightning arrester, which is applied in coatings, devices for coating liquid on the surface, and surface pretreatment, etc. It can solve the problem that the insulation performance of the side cannot be achieved, the insulating coating is difficult to resist the impact of super large current, and it is unfavorable to form a complete continuous problems such as dense insulating films

Active Publication Date: 2010-11-24
厦门ABB避雷器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned inorganic side insulating coating is not only expensive, but also has the disadvantage that the inorganic side glaze is easy to absorb moisture in the actual use method. In addition, most of the organic side insulating coatings involved adopt a high-temperature baking curing process, which is easy to form in the coating film during the curing method. Holes or pinholes are not conducive to the formation of a complete, continuous and dense insulating film, so conventional insulating coatings are difficult to resist ultra-high current impact
Its side insulation performance cannot reach the value specified in the relevant national standards

Method used

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  • Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof
  • Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof

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Embodiment 1

[0018] Embodiment 1: The insulating coating material on the side of the zinc oxide surge arrester valve plate is by weight percentage: fluorocarbon resin: SiO2 or Al2O3: isocyanate: myristyl ammonium acetate or PEG2000: methyltrimethoxysilane or carboxylated nitrile rubber: sec-butyl acetate=65:15:10:3:3:4.

[0019] The coating method of the insulating coating on the side of the zinc oxide surge arrester valve plate comprises the following steps:

[0020] a. All components of the insulating coating on the side of the zinc oxide surge arrester valve plate were mixed and dispersed with a sand mill for 3 hours, and filtered through a 120 mesh screen;

[0021] b. Grind the upper and lower surfaces of the zinc oxide surge arrester valve with a diamond double-end grinder; then clean it with an ultrasonic cleaner, then put it in an oven and bake it at 120°C for 2 to 3 hours, spray aluminum on the upper and lower surfaces of the valve Then vertically stacked, the thickness of sprayed...

Embodiment 2

[0023] Embodiment two: the insulating coating material on the side of the zinc oxide surge arrester valve plate is by weight percentage: fluorocarbon resin: SiO2: isocyanate: myristyl ammonium acetate: methyltrimethoxysilane: sec-butyl acetate=70:10: 10:3:3:4.

[0024] The coating method of the insulating coating on the side of the zinc oxide surge arrester valve plate comprises the following steps:

[0025] a. All components of the insulating coating on the side of the zinc oxide surge arrester valve plate were mixed and dispersed with a sand mill for 3 hours, and filtered through a 120 mesh stainless steel screen to obtain a good fluidity, uniform and stable coating;

[0026] b. Grind the upper and lower surfaces of the zinc oxide surge arrester valve with a diamond double-end grinder; then clean it with an ultrasonic cleaner, and then put it in an oven and bake it at 120°C for 2 to 3 hours. After the upper and lower surfaces of the valve are sprayed with aluminum Stacked v...

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Abstract

The invention relates to an insulating coating on the side face of a zinc oxide lightning arrester valve plate and a coating method thereof. The insulating coating comprises the following components in percentage by weight: 65-70% of fluorocarbon resin, 15-20% of temperature-resistant insulating filler, 15-20% of curing agent, 1-3% of dispersant, 2.8-3.3% of modifier and 3-8% of solvent. The coating method comprises the following steps: mixing the components, milling with a sand mill, dispersing and filtering to obtain a paint with high flowability, evenness and stability; cleaning the side face of the zinc oxide lightning arrester valve plate with an ultrasonic cleaner, and baking at 120 DEG C for 2-3 hours; and coating the paint on the side face of the valve plate, and curing at room temperature for 8-16 hours or curing by baking in a baking oven. The coating has favorable heat resistance and insulating property, and strong toughness and hydrophobicity.

Description

【Technical field】 [0001] The invention relates to a coating composition of a polymer compound, in particular to an insulating coating on the side of a zinc oxide surge arrester valve plate and a coating method thereof. 【Background technique】 [0002] Zinc oxide surge arrester is an overvoltage protection device installed near the protected equipment and connected in parallel with the protected equipment. A lightning arrester with good performance can limit the overvoltage in the power system to a level that is not harmful to the insulation. Improving the protection performance of lightning arresters can not only improve the operational reliability of power transmission and distribution systems, but also reduce the insulation level of electrical equipment, thereby reducing the weight of equipment and reducing costs. With the development of the domestic power grid to the ultra-high voltage level, there is an urgent need to provide ultra-high voltage arrester products with adv...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D5/25C09D7/12B05D3/02B05D3/12B05D3/00B05D1/02
Inventor 刘勇飞
Owner 厦门ABB避雷器有限公司
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