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Electroluminescent insulation defect self-diagnosis composite coating and preparation method thereof

A technology of insulation defects and composite coatings, which is applied in the direction of luminous coatings, coatings, epoxy resin coatings, etc., can solve problems that affect the safe operation of equipment, and achieve superior surface insulation strength, high flashover strength, and good optical performance. Effect

Pending Publication Date: 2022-04-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When the insulation state detection and diagnosis method is used to detect potential defects in the equipment, a special detection device is usually required, and professional field knowledge is required to diagnose the insulation state, and it is easy to affect the safe operation of the equipment

Method used

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  • Electroluminescent insulation defect self-diagnosis composite coating and preparation method thereof
  • Electroluminescent insulation defect self-diagnosis composite coating and preparation method thereof
  • Electroluminescent insulation defect self-diagnosis composite coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The invention provides an electroluminescent composite coating, which comprises: a vinyl-terminated polydimethylsiloxane (PDMS) polymer, a Pt curing agent, and ZnS:Cu particles.

[0037] Among them, the particle size of the ZnS:Cu particles is 10 μm. The mass of PDMS polymer is 1.88g, the mass of Pt curing agent is 0.19g, and the mass of ZnS:Cu is: 0.188-1.316g.

[0038] Such as figure 1 Shown, the present invention also provides a kind of preparation method of electroluminescent composite coating, and Fig. 2 (a) has provided the explanation figure of preparing polydimethylsiloxane PDMS / ZnS: Cu coating, with epoxy resin Substrates such as flakes are used as insulating materials, and PDMS / ZnS:Cu mixtures are prepared and coated on the surface of epoxy resin substrates. Include the following steps:

[0039] (1) Stir and mix ZnS:Cu fillers of different masses (0.188g, 0.564g, 0.94g, 1.316g) with 1.88g PDMS, then add 0.19g Pt curing agent, and stir to obtain a PDMS / ZnS:C...

Embodiment 2

[0047] This embodiment provides an electroluminescent composite coating, which includes: PDMS polymer, Pt curing agent, ZnS:Cu, Al particles.

[0048] Among them, the particle diameter of the ZnS:Cu and Al particles is 10 μm. The molar ratio of ZnS to Cu and Al in ZnS:Cu and Al particles is 99:0.67:0.33. The mass of PDMS polymer is 1.88g, the mass of Pt curing agent is 0.19g, and the mass of ZnS:Cu, Al is: 0.188-1.316g.

[0049] This embodiment also provides a method for preparing polydimethylsiloxane PDMS / ZnS:Cu, Al coatings. The method uses substrates such as epoxy resin flakes as insulating materials to prepare PDMS / ZnS:Cu, Al mixtures. It is coated on the surface of the epoxy resin matrix, and it specifically includes the following steps:

[0050] (1) Stir and mix ZnS:Cu, Al fillers of different masses (0.188g, 0.564g, 0.94g, 1.316g) with 1.88g PDMS, then add 0.19g Pt curing agent, and stir to obtain PDMS / ZnS:Cu, Al mixture.

[0051] (2) Take epoxy resin (EP) as the ba...

experiment example 1

[0055] This experimental example uses the ZnS:Cu composite coating in Example 1 to carry out the following experiments, wherein the ZnS:Cu, Al particles have a particle size of 10 μm, the added PDMS quality is 1.88g, and the Pt curing agent quality is 0.19g, the mass fractions of ZnS:Cu and Al are respectively: 0.188g, 0.564g, 0.94g, and 1.316g, and the ZnS:Cu and Al mass fractions of the final ZnS composite coating are: 8wt%, 21wt%, respectively. 31wt%, 39wt%, and the blank control group 0wt%.

[0056] Process electrodes with typical structures such as rod-plate and needle-plate, observe the luminescence characteristics of composite coatings under different structures, test the electroluminescence performance when small metal defects are attached to the surface of conical insulators, and compare and analyze the relationship between luminescence distribution characteristics and electric field distribution to verify the self-diagnosis effect of the composite coating.

[0057] ...

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Abstract

The invention provides an electroluminescent insulation defect self-diagnosis composite coating and a preparation method thereof, and the method comprises the following steps: taking polydimethylsiloxane (PDMS) and other materials with good light transmission as a polymer matrix, ZnS electroluminescent particles as a filler, epoxy resin and other insulating materials as a base material, and preparing the composite coating by using a sol-gel method to prepare the electroluminescent insulation defect self-diagnosis composite coating. The electroluminescent composite coating is prepared by using a coating method. The composite coating shows excellent surface insulation strength, and can improve the direct-current surface flashover voltage. Besides, a high electric field area generated by the insulation defect can be easily identified through the luminous distribution of the coating sample, so that the self-diagnosis of the insulation defect is realized.

Description

technical field [0001] The invention relates to the fields of material technology and electrical engineering, in particular to an electroluminescence insulation defect self-diagnosis composite coating and a preparation method thereof. Background technique [0002] Insulation materials are an important part of electrical equipment, such as high-voltage (HV) power equipment, electronic equipment, and equipment for advanced spacecraft applications. During the production, assembly and operation of these devices, insulation defects may occur, deteriorating or even failing the insulating material. Therefore, people have developed a variety of insulation state detection and diagnosis methods to find potential defects in equipment, but these methods usually require special detection equipment and complex detection techniques, which may affect the safe operation of equipment. For example, use ultraviolet imager to detect corona discharge of outdoor insulators, partial discharge dete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D163/00C09D5/22
Inventor 朱明晓郭小渤陈廷鑫李孟陶王双健
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)