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Organic solvent-free RTV anti-pollution flashover coating and preparation method thereof

A technology of antifouling flashover coatings and organic solvents, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve the volatile odor of reactive diluents, environmental and human hazards, construction environmental pollution, etc. problems, to achieve good operability, reduce damage, smooth surface effect

Active Publication Date: 2019-01-18
CHENGDU TALY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the antifouling flashover coating of this invention does not add small molecular organic solvents, it can be seen from the disclosed components that the reactive diluents containing acrylate groups used are all organic compounds, and these compounds are actually organic solvents. , and is extremely volatile, VOCs tend to volatilize during the preparation and use of coatings, and cause pollution to the construction environment due to incomplete UV curing reactions
That is to say, although no inert organic solvent is added to the paint in this invention, the reactive diluent added is also a kind of organic solvent that is volatile and has a great odor, so it is difficult to fundamentally solve the problem of RTV antifouling flashover paint in the preparation of and the problems of harm to the environment and human body during the construction process

Method used

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  • Organic solvent-free RTV anti-pollution flashover coating and preparation method thereof
  • Organic solvent-free RTV anti-pollution flashover coating and preparation method thereof
  • Organic solvent-free RTV anti-pollution flashover coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 40 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 500mpa.s; 5 parts of dimethyl silicone oil with a viscosity of 10mpa.s; 10 parts of MQ resin with methyl silicone chain as the main chain; 30 parts of alumina; 5 parts of methyl tributylketoxime silane; 5 parts of dimethyl dibutylketoxime silane; 0.5 parts of γ-aminopropyl triethoxysilane; 0.5 parts of tin compound; 4 parts of iron oxide red share.

[0036]Mix 40 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 500mpa.s, 5 parts of dimethyl silicone oil with a viscosity of 10mpa.s, 10 parts of MQ resin with methylsiloxane as the main chain, 30 parts Put the aluminum hydroxide into the biaxial kneader, stir and knead for 20 minutes to obtain the base rubber; put the base rubber into the three-roll machine and grind it twice; put the ground base rubber into the biaxial kneader again, heat up and stir , keep the set temperature at 100°C and vacuum degree -0.08Mpa and vacuum...

Embodiment 2

[0038] Weighing 35 parts of a mixture of hydroxyl-terminated polydimethylsiloxane and alkoxy polydimethylsiloxane with a viscosity of 1500mpa.s; 10 parts of dimethyl silicone oil with a viscosity of 250mpa.s; 15 parts of MDQ resin with oxygen chain as the main chain; 20 parts of aluminum hydroxide and magnesium hydroxide mixture; 1 part of methyltriethoxysilane; 10 parts of methylpropyldimethoxysilane; 5 parts of a mixture of triethoxysilane, γ-glycidyl etheroxypropyl trimethoxysilane, N-(β-aminoethyl)-γ-aminopropyl trimethoxysilane; 0.5 parts of titanium compound catalyst; 3.5 parts of mixture of green and carbon black.

[0039] Mix 35 parts of a mixture of hydroxyl-terminated polydimethylsiloxane and alkoxy polydimethylsiloxane with a viscosity of 1500mpa.s, 10 parts of dimethicone oil with a viscosity of 250mpa.s, 15 parts of methyl Put the MDQ resin with silicone chain link as the main chain, 20 parts of aluminum hydroxide and magnesium hydroxide mixture into the biaxial ...

Embodiment 3

[0041] Weigh 50 parts of alkoxy polydimethylsiloxane with a viscosity of 3000mpa.s; 8 parts of dimethyl silicone oil with a viscosity of 500mpa.s; 5 parts of MTQ resin with methylphenylsiloxane chain as the main chain 20 parts of magnesium hydroxide; 8 parts of methyltrimethoxysilane; 2 parts of methylpropyldimethoxysilane; 4 parts of γ-glycidyl etheroxypropyl trimethoxysilane; 1 part of titanium compound; Yellow 2 parts.

[0042] Mix 50 parts of alkoxypolydimethylsiloxane with a viscosity of 3000mpa.s, 8 parts of dimethyl silicone oil with a viscosity of 500mpa.s, and 5 parts of MTQ resin with methylphenylsiloxane as the main chain , Put 20 parts of magnesium hydroxide into the material tank, and stir at high speed with a high-speed mixer for 50 minutes to obtain the base rubber; put the base rubber into the sand mill and sand it for 3 times; put the sanded base rubber into the double In the shaft kneader, heat up and stir, keep the set temperature at 150°C, and vacuum-dry a...

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Abstract

The invention discloses organic solvent-free RTV anti-pollution flashover coating and a preparation method thereof. The RTV anti-pollution flashover coating comprises the following components in partsby weight: 30-60 parts of polydimethylsiloxane, 5-10 parts of a hydrophobic auxiliary agent, 5-15 parts of silicone resin, 20-40 parts of a a flame-retardant filler, 1-10 parts of a crosslinking agent, 0.5-5 parts of a tackifier, 0.01-1 part of a catalyst and 0.1-10 parts of a pigment. The RTV anti-pollution flashover coating does not contain any organic solvent, and performance indexes thereof can meet performance requirements of the power industry on insulation, hydrophobicity, weather resistance, construction and the like of the anti-pollution flashover coating; the problems of environmentpollution and the like caused by high VOC emission from the organic solvent in the existing RTV anti-pollution flashover coating are essentially solved.

Description

technical field [0001] The invention relates to the technical field of anti-pollution flashover coatings, in particular to an organic solvent-free RTV anti-pollution flashover coating which can be used for dip coating of insulators and other electrical equipment and a preparation method thereof. Background technique [0002] RTV silicone rubber anti-pollution flashover coating, as one of the main measures to prevent pollution flashover in electrical insulation, has been widely used in 220V to ±1100KV AC and DC UHV, and has achieved remarkable results in preventing pollution flashover accidents. Especially since it was fully applied in 2007, after ten years of operation inspection, under the condition of serious air pollution and frequent occurrence of heavy smog, it has successfully curbed large-scale pollution flashover accidents in the power grid, and completely relieved the need for large-scale manual cleaning of insulators. The heavy burden of operation and maintenance h...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/16C09D7/61C09D7/63
CPCC09D183/04C09D5/1675C09D5/1687C08L2205/03C08L2205/025C08K2003/2265C08K2003/2227C08L83/04C08K13/02C08K3/22C08K5/544
Inventor 李红梅梁汉川李强张程夕张先银陶云峰
Owner CHENGDU TALY TECH CO LTD
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