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Anti-pollution flashover coating and preparation method thereof

A technology of antifouling flashover coatings and catalysts, applied in the direction of antifouling/underwater coatings, fireproof coatings, coatings, etc. Effect of Pollution Performance

Active Publication Date: 2012-08-29
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the alkyl chain of the perfluorocarbon atom in the molecular structure of the binder is extremely short, the antifouling effect of the coating is not ideal

Method used

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  • Anti-pollution flashover coating and preparation method thereof
  • Anti-pollution flashover coating and preparation method thereof
  • Anti-pollution flashover coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Hydroxy-terminated polysiloxane (6000mm 2 / s) 25 parts (parts by weight), silicon-containing modified fluororesin 4 parts (parts by weight), trimethylsilyl-terminated polydimethylsiloxane (500mm 2 / s) 1 part (parts by weight), nano silicon dioxide (specific surface area is 175m 2 / g) 3 parts (parts by weight), 1 part (parts by weight) of decabromodiphenylethane, 1 part (parts by weight) of wollastonite, 5 parts (parts by weight) of aluminum hydroxide, 1 part (parts by weight) of pigment Add to the batching tank respectively, heat to 140°C (not less than 600mmHg) under stirring to remove water for 2 hours, after cooling, grind with three rolls, then add xylene: butyl acetate = 4: 1 (weight ratio) mixed solvent 57 Parts (parts by weight), 1 part (parts by weight) of cross-linking agent methyl tributyl ketoxime base silane, 0.2 part (parts by weight) of catalyst dibutyltin dilaurate, after the mixture is uniform, filter and pack under nitrogen protection air container. ...

Embodiment 2

[0049] The hydroxyl-terminated polysiloxane (viscosity is 8000mm 2 / s) 30 parts (parts by weight), 5 parts of silicon-modified fluororesin, trimethylsilyl-terminated polydimethylsiloxane (600mm 2 / s) 2 parts (parts by weight), nano silicon dioxide (specific surface area is 175m 2 / g) 4 parts (parts by weight), 1 part (parts by weight) of decabromodiphenylethane, 2 parts (parts by weight) of wollastonite, 4 parts (parts by weight) of aluminum hydroxide, 1 part (parts by weight) of pigment Add to the batching tank respectively, heat to 140°C (not less than 600mmHg) under stirring to remove water for 2 hours, after cooling, grind with three rolls, then add xylene: butyl acetate = 4: 1 (weight ratio) mixed solvent 49 Parts (parts by weight), 1.5 parts (parts by weight) of crosslinking agent methyltriacetonyl silane, 0.2 part (parts by weight) of catalyzer dibutyltin dilaurate, after the mixture is uniform, it is filtered and packed in an air-tight container in the container.

...

Embodiment 3

[0052] The hydroxyl-terminated polysiloxane (viscosity is 8000mm 2 / s) 30 parts (parts by weight), 5 parts of silicon-containing modified fluororesin, trimethylsilyl-terminated polydimethylsiloxane (800mm 2 / s) 2 parts (parts by weight), nano silicon dioxide (specific surface area is 175m 2 / g) 4 parts (parts by weight), 1 part (parts by weight) of decabromodiphenylethane, 2 parts (parts by weight) of wollastonite, 4 parts (parts by weight) of aluminum hydroxide, 1 part (parts by weight) of pigment Add to the batching tank respectively, heat to 140°C (not less than 600mmHg) under stirring to remove water for 2 hours, after cooling, grind with three rolls, then add xylene: butyl acetate = 4: 1 (weight ratio) mixed solvent 50 Parts (parts by weight), 1 part (parts by weight) of cross-linking agent methyl tributyl ketoxime base silane, 0.2 part (parts by weight) of catalyst dibutyltin dilaurate, after the mixture is uniform, filter and pack under nitrogen protection air contain...

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Abstract

The invention discloses an anti-pollution flashover coating and a preparation method thereof. The anti-pollution flashover coating consists of the following compositions in part by weight: 20 to 40 parts of hydroxyl-terminated polyorganosiloxane, 4 to 8 parts of modified silicon fluorine resin, 1 to 3 parts of small molecular siloxane, 3 to 6 parts of nanometre silicon dioxide, 1 to 3 parts of decabromdiphenylethane (DBDPE), 1 to 3 parts of wollastonite, 4 to 8 parts of aluminium hydroxide, 1 to 2 parts of pigment, 1 to 6 parts of crosslinker, 0.02 to 1 part of catalyst and 30 to 60 parts of solvent, wherein the small molecular siloxane is trimethyl end-capped polydimethylsiloxane; the catalyst is dibutyltin dilaurate or stannous octoate; and the solvent is a mixed solvent of dimethylbenzene and butyl acetate in a weight ratio of 3:1-5:1. The prepared coating has the advantages of high flame retardant grade and good anti-pollution effect.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, and in particular relates to an anti-fouling flashover coating applied to the surface of an insulating layer of high-voltage power transmission and transformation equipment and a preparation method thereof. Background technique [0002] At present, RTV anti-pollution flashover coatings are widely used in high-voltage power transmission and transformation equipment, and have a positive anti-pollution flashover effect. The RTV anti-fouling flashover coating formula is different, its anti-adhesiveness, hydrophobicity, insulation and flame retardancy are very different, and its ability to resist the erosion of different pollution sources and the durability of anti-fouling flashover are also very different. [0003] Yang De, Ding Wei and Liu Jie published the paper "Development and Application of Silicone Antifouling Flashover Coatings" (Organosilicon Materials, 2000, 14(6): 12-14.), reporti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C09D5/18C09D5/16
Inventor 刘平原陆志军何宏明杨楚明姚森敬
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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