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Novel fluoro-silicone coating preventing pollution flashover and a preparing method thereof

An anti-pollution flashover coating and fluorosilicon technology, applied in the coating field, can solve the problem that the anti-pollution flashover coating cannot meet the needs of the power system, etc., and achieve the effects of excellent hydrophobic migration, easy drying and easy molding.

Inactive Publication Date: 2018-12-07
赵永锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current antifouling flashover coatings can no longer meet the needs of power systems
For example, since the ±660kV DC line of my country's ultra-high voltage Yindong line was put into operation in November 2010, five pollution flashovers occurred due to local unknown reasons, and the voltage had to be reduced; Pollution flashover resulted in depressurized operation; enhanced paint was repainted in April 2013, but local pollution flashover still occurred in early 2014, resulting in depressurized operation

Method used

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  • Novel fluoro-silicone coating preventing pollution flashover and a preparing method thereof
  • Novel fluoro-silicone coating preventing pollution flashover and a preparing method thereof
  • Novel fluoro-silicone coating preventing pollution flashover and a preparing method thereof

Examples

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Embodiment 1

[0033] The fluorosilicone antifouling flashover coating of the present embodiment comprises the following components in parts by weight: 25 parts of tetrafluoropropyl methacrylate, 5 parts of hydroxyethyl methacrylate, 2 parts of butyl methacrylate, 1 part of methyl acrylate, 1 part of isooctyl methacrylate, 10 parts of vinyltriethoxysilane, 5 parts of γ-methacryloxypropyl trimethoxysilane, 5 parts of heptamethyltrisiloxane parts, 4 parts of polydimethylsiloxane, 4 parts of hydroxyl silicone oil, 0.6 parts of azobisisobutyronitrile, and 20 parts of dimethyl carbonate.

[0034] The fluorosilicone antifouling flashover coating of the present embodiment is prepared by the following method:

[0035]Under normal temperature conditions, add acrylate monomer, silane coupling agent, polysiloxane, 2 / 3 weight initiator and solvent, blow nitrogen for 30 minutes to remove the oxygen in the system; continue to blow nitrogen, then raise the temperature of the oil bath to 80±2°C, stir and r...

Embodiment 2

[0037] The fluorosilicone antifouling flashover coating of this embodiment comprises the following components in parts by weight: 10 parts of tetrafluoropropyl methacrylate, 30 parts of octafluoropentyl methacrylate, and 5 parts of hydroxyethyl methacrylate , 5 parts of butyl methacrylate, 10 parts of methyl methacrylate, 10 parts of isooctyl methacrylate, 28 parts of vinyl triethoxysilane, 4 parts of γ-methacryloxypropyl trimethoxysilane 8 parts, 8 parts of heptamethyltrisiloxane, 4 parts of polydimethylsiloxane, 6 parts of hydroxyl silicone oil, 1.2 parts of methyl ethyl ketone peroxide, and 30 parts of acetone.

[0038] The preparation method of the fluorosilicone antifouling flashover coating of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0040] The fluorosilicone antifouling flashover coating of the present embodiment comprises the following components in parts by weight: 10 parts of dodecafluoroheptyl methacrylate, 20 parts of hydroxyethyl methacrylate, 5 parts of butyl methacrylate, 5 parts of methyl methacrylate, 10 parts of isooctyl methacrylate, 15 parts of vinyltriethoxysilane, 2 parts of γ-methacryloxypropyl trimethoxysilane, heptamethyltrisiloxane 3 parts, 2 parts of polydimethylsiloxane, 0.2 parts of lauroyl peroxide, 10 parts of ethyl acetate.

[0041] The preparation method of the fluorosilicone antifouling flashover coating of this embodiment is the same as that of Embodiment 1.

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Abstract

Novel fluoro-silicone coating preventing pollution flashover is disclosed. The coating includes, by weight, 10-80 parts of a fluorinated acrylate monomer, 9-60 parts of an acrylate monomer, 7-43 partsof a silane coupling agent, 2-23 parts of polysiloxane, 0.2-1.8 parts of an initiator and 1-80 parts of a solvent. The coating has excellent hydrophobicity, hydrophobic mobility, weather fastness, chemical resistance, ageing resistance, self-cleaning performance, electric performance, tear strength, shearing strength, and flame retardant performance, and is suitable for an electrical power system. A preparing method disclosed is high in manufacturability, and material and object surfaces can be coated with the coating prepared by the method in dip-coating, spread-coating and spraying mannersand the like. The coating prepared is easy to dry, easy to shape, easy to clean and capable of repeated coating, and the drying time at room temperature is not longer than 10 min. The coating has advantages of simple construction process and easy operation and is safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a novel fluorosilicon antifouling flashover coating and a preparation method thereof. Background technique [0002] Pollution flashover refers to the phenomenon that the soluble substances of the dirt attached to the insulating surface of electrical equipment gradually dissolve in water under humid conditions, forming a conductive film on the insulating surface, which greatly reduces the insulation level of the insulator, and occurs under the action of an electric field. Strong discharge phenomenon. [0003] For example, during December 27-30, 1996, a rare heavy fog appeared in East China, and 11 of the 23 500kV lines in the East China Power Grid had flashovers and 77 trips; 24 of the 220kV lines had flashovers and 58 trips. In December 1996, 8 of the 35 220kV lines in Anhui Province had pollution flashover accidents and tripped 35 times; 2 of the 8 500kV lines had flashover ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D183/04C09D5/18C09D5/16C09D7/20C09D183/08
CPCC08L2201/02C08L2205/02C09D5/1675C09D5/18C09D7/20C09D151/085C09D183/08C08L83/04
Inventor 赵永锋
Owner 赵永锋
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