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A light self-curing electrical insulation coating material, preparation method and power line

A self-curing, insulating coating technology, applied in the direction of power cables, insulated cables, power cables for overhead applications, etc., can solve problems such as only suitable for ready-to-use, short shelf life, chemical corrosion of copper and aluminum wires, etc., to achieve viscosity And thixotropy control is reasonable, the shape is stable, and the effect of improving feasibility

Active Publication Date: 2021-08-27
HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material uses vinyl hydrosilane as the resin matrix, but under the action of the platinum catalyst that coexists with it, the vinyl group easily undergoes addition polymerization with silicon-hydrogen bonds, which makes the material potentially cured before use. The shelf life is relatively long. Short, generally only suitable for ready-to-use. At the same time, the small molecules of ketoxime removed by the crosslinking agent during the reaction may cause chemical corrosion to copper and aluminum wires

Method used

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  • A light self-curing electrical insulation coating material, preparation method and power line
  • A light self-curing electrical insulation coating material, preparation method and power line
  • A light self-curing electrical insulation coating material, preparation method and power line

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Embodiment 1

[0038] The preparation method of the insulating coating material of the present embodiment is as follows:

[0039] By weight, 65 parts of α with a number average molecular weight of 80000, ω dimethoxy modified silicone resin, 6 parts of dimethyl silicone oil, 7 parts of hydrophobic fumed silica, 0.5 parts of chlorothalonil, 0.8 parts After the super wear-resistant carbon black is fully dispersed and uniform by the three-roll mill, it is transferred to the planetary double power mixer, and 20 parts of sphericity 97%, antistatic pressure 12Mpa, median particle size 60um, true density 0.20g are added at the same time / cm 3 Nano hollow glass microspheres, completely remove the water vapor in the material under vacuum heating and stirring environment, then slowly add 0.4 parts of hexamethyldisilazane, 1.5 parts of aminopropyltrimethoxysilane, 3 parts of methyl trimethyl A liquid mixture composed of oxysilane crosslinking agent and 1 part of bis(ethyl acetoacetate) diisopropyl tita...

Embodiment 2

[0042] The preparation method of the insulating coating material of the present embodiment is as follows:

[0043] By weight, 75 parts of α with a number average molecular weight of 100000, ω dimethoxy modified silicone resin, 7 parts of dimethyl silicone oil, 5 parts of hydrophobic fumed silica, 1 part of carbendazim, 0.4 parts After the super wear-resistant carbon black is fully dispersed and uniform by the three-roll mill, it is transferred to the planetary double power mixer, and 22 parts of sphericity 95%, antistatic pressure 30Mpa, median particle size 45um, true density 0.49g are added at the same time / cm 3Nano hollow glass microspheres, completely remove the water vapor in the material under vacuum heating and stirring environment, then slowly add 0.5 parts of ultrafine anhydrous calcium chloride, 1 part of glycidyl ether propyl triethylsilane, 2 parts A mixture of methyltrimethoxysilane crosslinking agent and 0.7 parts of bis(ethyl acetoacetate) diisopropyl titanate...

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Abstract

The invention relates to a light-weight self-curing electric insulation coating material, a preparation method and an electric power line, which comprises 50-80 parts of modified silicone resin, 5-7 parts of plasticizer, and 1-4 parts of crosslinking agent in parts by weight. 0.1-3 parts of titanate chelate, 1-8 parts of hydrophobic fumed silica, 10-30 parts of nano hollow microspheres, 0.2-2 parts of moisture scavenger, 0.5-2 parts of super wear-resistant carbon black , 1 to 3 parts of adhesion promoter and 0 to 1 part of antifungal agent; the modified silicone resin contains at least 2 alkoxy functional groups, and the number average molecular weight of the modified silicone resin is 70000 ~120000. The insulating coating material of the present invention is light in weight and has a density of only 0.9-1.0 g / cm 3 , will not excessively increase the force load of the original tower rod, and will not cause the wire to sag.

Description

technical field [0001] The invention relates to a lightweight self-curing electric insulation coating material, a preparation method and an electric power line. Background technique [0002] The early outdoor overhead power lines were generally in the form of bare aluminum wires due to cost and heat dissipation considerations. At the same time, in order to increase the tensile strength, steel wires were mostly mixed in the middle, commonly known as "steel-reinforced aluminum stranded wire". Due to the lack of insulation protection, such wires are prone to oxidation and corrosion during long-term exposure to the sun and rain. At the same time, there may be serious safety hazards such as phase-to-phase short circuit, leakage / electric shock, etc.; and the increase of insulation skin will inevitably lead to the deterioration of power line quality. The increase will lead to an increase in the weight load of the electric frame and increase the difficulty of transformation. Over t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/14C09D7/61C09D7/63C09D7/65H01B7/02H01B9/00
CPCC08K2201/003C08K2201/011C08L2203/202C08L2205/025C09D5/14C09D183/04C09D7/61C09D7/63C09D7/65C09D7/70H01B7/02H01B9/008C08L83/04C08K13/04C08K7/26C08K3/04C08K7/28C08K5/10
Inventor 林益军何禄文张刚崔武林何雄亮
Owner HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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