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RTV anti-pollution flashover coating

A technology of antifouling flashover paint and base glue, which is applied in the direction of antifouling/underwater paint, fireproof paint, coating, etc. It can solve the problems of decreased hydrophobicity and adhesion, and achieves long service life, good electrical performance and Mechanical properties, the effect of excellent anti-fouling flashover protection

Inactive Publication Date: 2018-11-23
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing room temperature vulcanized silicone rubber (RTV) antifouling flashover coatings are prone to peeling, powdering, and peeling when they are operated in high-temperature, high-humidity, and salt-spray climates in coastal areas such as Guangdong Aging phenomena such as decreased adhesion and decreased hydrophobicity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 35 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 35000cs, 1.5 parts of silicone oil with a viscosity of 500cs, 7 parts of hydrophobic aluminum hydroxide (particle size 3-10 microns, mass fraction of aluminum hydroxide greater than 99.5%, the balance Unavoidable impurities, such as sodium oxide, silicon dioxide and iron oxide, etc.), 3.5 parts of fumed white carbon black (with a particle size of 10-20 nanometers), 1.5 parts of hydrophobic iron red (the mass content of iron oxide is greater than 94 %, the balance is unavoidable impurities), the relative tinting strength of iron red is 95% to 105% (measured according to the standard DIN 6174No.038, 2009-08-01), 1 part of decabromodiphenyl ether, No. 120 35 parts of solvent oil are fully mixed, dispersed and ground, poured into the reaction kettle, and vacuumed to -0.1MPa, add 0.2 part of catalyst dibutyltin dilaurate, crosslinking agent (compound mass ratio: methyltrimethoxysilane: Methyl tributyl k...

Embodiment 2

[0034] 50 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 25000cs, 2 parts of silicone oil with a viscosity of 400cs, 11 parts of hydrophobic aluminum hydroxide (particle size 3-10 microns, mass fraction of aluminum hydroxide greater than 99.5%, the balance Unavoidable impurities, such as sodium oxide, silicon dioxide and iron oxide, etc.), 8.5 parts of fumed white carbon black (with a particle size of 10-20 nanometers), 2.5 parts of hydrophobic iron red (the mass content of iron oxide is greater than 94 %, the balance is unavoidable impurities), the relative tinting strength of iron red is 95% to 105% (measured according to the standard DIN 6174No.038, 2009-08-01), 1 part of decabromodiphenyl ether, No. 120 30 parts of solvent oil are fully mixed, dispersed and ground, poured into the reaction kettle, and vacuumed to -0.1MPa, add 1 part of catalyst dibutyltin dilaurate, crosslinking agent (compound mass ratio: methyltrimethoxysilane: Methyl tributyl keto...

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Abstract

The invention discloses a RTV anti-pollution flashover coating. The RTV anti-pollution flashover coating is prepared from the following components in parts by mass: 35 to 50 parts of base gum, 1.5 to2 parts of silicone oil, 7 to 11 parts of aluminum hydroxide, 3.5 to 8.5 parts of white carbon black, 1.5 to 2.5 parts of iron oxide red, 1 to 5 parts of deca-brominated diphenyl ether, 30 to 35 partsof diluent, 0.2 to 1 part of catalyst, 1 to 2.5 parts of cross-linking agent and 1.5 to 3.5 parts of coupling agent. The RTV anti-pollution flashover coating disclosed by the invention has good electrical and mechanical properties and long service life, and can provide excellent anti-pollution flashover protection for power transmission and transformation external insulation equipment.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an RTV antifouling flashover coating. Background technique [0002] Insulators are important external insulation equipment for high-voltage transmission lines and substations. Pollution flashover refers to the fact 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, greatly reducing the insulation level of the insulator, and appearing under the action of the electric field Phenomenon of strong discharge. Existing room temperature vulcanized silicone rubber (RTV) anti-fouling flashover coatings are prone to peeling, chalking, and peeling when they are operated in high-temperature, high-humidity, and salt-spray climates in coastal areas such as Guangdong Aging phenomena such as decreased adhesion and decreased hydrophobi...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/16C09D5/18C09D7/61C09D7/63
CPCC08K2003/2227C08K2201/011C08L2201/02C09D5/1675C09D5/1687C09D5/18C09D183/04C08L83/04C08K13/02C08K3/36C08K3/22C08K5/06C08K5/544C08K5/5425C08K5/5435
Inventor 贾志东王希林李智
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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