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High-temperature-resistant insulating composition, insulating coating, and preparation method and application of insulating coating

An insulating coating and composition technology, applied in the field of coating composition preparation, can solve the problems of not affecting the insulating coating, the high temperature resistance of the insulating coating needs to be further improved, and achieve the effect of excellent adhesion performance and good insulation performance

Active Publication Date: 2019-09-13
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the high temperature resistance of the insulating coating needs to be further improved without affecting other properties such as the insulation resistance of the insulating coating, thereby providing a high temperature resistant insulating composition, insulating Coating and its preparation method and application

Method used

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  • High-temperature-resistant insulating composition, insulating coating, and preparation method and application of insulating coating

Examples

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Embodiment 1

[0059] This embodiment provides an insulating composition, and its raw materials are composed of: 2.8 kg of magnesium dihydrogen phosphate, 4.5 kg of silica sol, 0.5 kg of chromic anhydride, 22 g of cyanoacetoxyethyl methacrylate, ethylene bis(oxyethylene base) bis[3-(tert-butyl-4-hydroxy-m-tolyl)propionate] 10g, butyloctyldiphenylamine 5g, fluorine-modified acrylic acid 8g, polyether-modified polysiloxane 3g, Ionized water 2.15kg; Wherein, magnesium dihydrogen phosphate is obtained by reacting phosphoric acid of 25wt% and magnesium oxide of 11wt% in deionized water by initial concentration;

[0060] This embodiment also provides an insulating coating prepared from the above insulating composition;

[0061] The above-mentioned insulating coating is prepared by the following method. Add silica sol, magnesium dihydrogen phosphate, and chromic anhydride to deionized water in sequence, and stir for 1 hour with an electric mixer; continue to add cyanoacetoxyethyl methacrylate, ethy...

Embodiment 2

[0065] This embodiment provides an insulating composition, and its raw material composition is: 2.5kg of magnesium dihydrogen phosphate, 4.4kg of silica sol, 0.6kg of chromic anhydride, 15g of methylol diacetone acrylamide, 10g of water-based alkyd resin emulsion, bis [3-(3,5-di-tert-butyl-4-hydroxy)phenyl] triethylene glycol propionate 16g, phosphate-modified acrylic acid 4g, polyether-modified polysiloxane 3g, deionized water 2.45kg Wherein, magnesium dihydrogen phosphate is obtained by reacting phosphoric acid with an initial concentration of 25wt% and magnesium oxide of 11wt% in deionized water.

[0066] This embodiment also provides an insulating coating prepared from the above insulating composition;

[0067] The above-mentioned insulating coating is prepared by the following method: add silica sol, magnesium dihydrogen phosphate, and chromic anhydride to deionized water in sequence, and stir for 1 hour with an electric mixer; continue to add methylol diacetone acrylamid...

Embodiment 3

[0071] This embodiment provides an insulating composition, and its raw materials are composed of: 3.2kg of magnesium dihydrogen phosphate, 4.7kg of silica sol, 0.4kg of chromic anhydride, 28g of cyanoacetoxyethyl methacrylate, ethylene bis(oxyethylene base) bis[3-(tert-butyl-4-hydroxy-m-tolyl)propionate 20g, fluorine-modified acrylic acid 12g, dimethylsiloxane 1.5g, tributyl phosphate 1.5g, deionized water 1.64 kg; Wherein, magnesium dihydrogen phosphate is obtained by reacting phosphoric acid of 23wt% and magnesium oxide of 8wt% in deionized water by initial concentration;

[0072] This embodiment also provides an insulating coating prepared from the above insulating composition;

[0073] The above-mentioned insulating coating is prepared by the following method. Add silica sol, magnesium dihydrogen phosphate, and chromic anhydride to deionized water in sequence, and stir for 1 hour with an electric mixer; continue to add cyanoacetoxyethyl methacrylate, ethylene Bis(oxyethyl...

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Abstract

The invention belongs to the technical field of coating composition preparation, and particularly relates to a high-temperature-resistant insulating composition, an insulating coating, and a preparation method and application of the insulating coating. Raw materials of the high-temperature-resistant insulating composition comprise one or more selected from a group consisting of magnesium dihydrogen phosphate, silica sol, chromic anhydride, ethylene bis(oxyvinyl) bis[3-(tert-butyl-4-hydroxy-m-tolyl) propionate], bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl] triethylene glycol propionate, butyloctyldiphenylamine and high-molecular phenolic ester, and comprise one or more selected from a group consisting of cyano acetoxyl ethyl methacrylate, hydroxymethyl diacetone acrylamide and a water-based alkyd resin emulsion. The coating formed by the synergistic effect among all the components can resist high-temperature heat treatment at a temperature of 750-900 DEG C for a long time, has excellent insulating performance, has excellent adhesion performance on the surface of a bare steel sheet of ultra-thin silicon steel, and can reach a grade A.

Description

technical field [0001] The invention belongs to the technical field of coating composition preparation, and in particular relates to a high-temperature-resistant insulating composition, an insulating coating, a preparation method and application thereof. Background technique [0002] The converter valve is the core equipment of the DC transmission project. It obtains the desired DC voltage by sequentially connecting the three-phase AC voltage to the DC terminal, and realizes power control. The converter valve is equipped with a thyristor and a saturable reactor, among which the thyristor is a key component that determines the flow capacity of the converter valve, and the saturable reactor is a reactive power compensation device that can suppress the sudden rise of current in the valve due to the conduction of the element , and smooth the surge current caused by the fault in the line, so as to avoid burning the thyristor components and protect the thyristor. The key componen...

Claims

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Application Information

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IPC IPC(8): C09D4/06C09D4/02C09D167/08C09D5/25C09D7/61
CPCC09D4/06C09D5/00C09D5/18C09D167/08C09D7/61C08L61/24C08K5/521C08K3/36
Inventor 程灵杨富尧马光韩钰陈新何承绪高洁吴雪刘洋陈保安聂京凯祝志祥
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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