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Insulating paint used for overhead high voltage line and preparation method thereof

A technology for insulating coatings and high-voltage wires, applied to organic insulators, plastic/resin/wax insulators, coatings, etc., can solve problems such as pole collapse, low efficiency, and delays in the decision-making time of commanders, and achieve a strong foundation Material adhesion, broad application prospects, strong self-cleaning effect

Inactive Publication Date: 2010-07-21
ENG COLLEGE OF ENG CORPS PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2007, a severe snow disaster occurred in the south of my country, which caused the high-voltage power supply lines to break due to the heavy ice hanging on the lines, causing the wires to break and the poles to collapse, resulting in the inability of various departments to use electricity and causing huge economic losses to the country. At that time, only mechanical deicing was available. method, the efficiency is too low, and there are even casualties
In addition, the exposed overhead high-voltage wires are very easy to be attacked by the military because they are not protected by insulating coatings, resulting in short circuits and power interruptions. Modern warfare relies more and more on power systems and electronic equipment. Military command and control, combat operations , communications and logistics will be seriously affected by power outages or short circuits in electronic circuits. It has the characteristics of self-cleaning, anti-snow, high voltage resistance, etc.
PTFE resin has been widely used in construction and other industries due to its excellent properties such as super weather resistance, strong self-cleaning property, strong substrate adhesion, acid resistance, alkali resistance, and corrosion resistance. etc., so it has not been used in insulating coatings for overhead high-voltage wires, so it is necessary to develop a multi-purpose insulating coating with self-cleaning, anti-snow, high-voltage resistance, etc. to meet the requirements of 35 kV voltage resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 100 parts of polytetrafluoroethylene resin (tetrafluoroethylene-ethylene copolymer, its hydroxyl value is 60mg / g resin, solid content is 60%), 20 parts of dry ground mica (1250 orders), 20 parts of butyl acetate, 6 parts of hexamethylene diisocyanate, 0.3 parts of silicone defoamer, 1.2 parts of organically modified bentonite as anti-settling agent. Preparation process: Add 20 parts of polytetrafluoroethylene resin, 20 parts of mica, 20 parts of butyl acetate, 0.3 parts of silicone defoamer, and 1.2 parts of anti-settling agent organically modified bentonite into a high-speed disperser, and rotate at 6000 rpm Disperse for 20 minutes at a speed of 1 / min, then adjust the speed to 500 rpm, add the remaining polytetrafluoroethylene resin in the formula, mix evenly, and filter to obtain the first component, and the curing agent hexamethylene diisocyanate as the second group Each part is packaged separately, when used, add it according to the above ratio, mix well and use it....

Embodiment 2

[0029] 100 parts of polytetrafluoroethylene resin (tetrafluoroethylene-ethylene copolymer, its hydroxyl value is 55 mg / g resin, solid content is 65%), 30 parts of dry ground mica (1500 orders), 25 parts of butyl acetate, 7 parts of hexamethylene diisocyanate, 0.3 parts of silicone defoamer, 1.5 parts of organically modified bentonite as anti-settling agent. Preparation process: 30 parts of polytetrafluoroethylene resin, 25 parts of butyl acetate, 0.3 parts of silicone defoamer, 1.5 parts of anti-sedimentation agent organically modified bentonite were added to the high-speed disperser, at a speed of 6000 rpm Disperse for 20 minutes, then adjust the speed to 500 rpm, add the remaining polytetrafluoroethylene resin in the formula, mix evenly, and filter to obtain component A. The curing agent hexamethylene diisocyanate is packaged separately as component B. When using, add it according to the above ratio, mix evenly and use it.

Embodiment 3

[0031] 100 parts of polytetrafluoroethylene resin (tetrafluoroethylene-ethylene copolymer, its hydroxyl value is 50 mg / g resin, and solid content is 70%), 40 parts of dry ground mica (2000 mesh), 30 parts of butyl acetate, 7 parts of hexamethylene diisocyanate, 0.5 parts of silicone defoamer, 2.0 parts of organically modified bentonite as anti-settling agent. Preparation process: 40 parts of polytetrafluoroethylene resin, 30 parts of butyl acetate, 0.5 parts of silicone defoamer, 2.0 parts of anti-sedimentation agent organically modified bentonite were added to the high-speed disperser, at a speed of 6000 rpm Disperse for 20 minutes, then adjust the speed to 500 rpm, add the remaining polytetrafluoroethylene resin in the formula, mix evenly, and filter to obtain component A. The curing agent hexamethylene diisocyanate is packaged separately as component B. When using, add it according to the above ratio, mix evenly and use it.

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Abstract

The invention discloses insulating paint used for an overhead high voltage line, which has the excellent properties of self cleaning, snow accumulation prevention and high voltage prevention, and the property thereof can reach the insulating requirement of resisting 35 KV voltage. The insulating paint used for the overhead high voltage line of the invention comprises a component A and a component B, wherein the component A is formed by mixing the following components in parts by weight: 100 parts of teflon resin, 20-40 parts of inorganic pigment, 20-30 parts of diluent, 0.3-0.7 part of defoamer and 1.2-1.8 parts of anti-settling agent; the component B is a curing agent. When in use, the component A and the component B are evenly mixed to be used, and the amount of the component B is equal to 6-8 parts by taking 100 parts of the teflon resin in the component A as the reference.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, more specifically to an insulating coating for overhead high-voltage wires and a preparation method thereof. Background technique [0002] Electric power is generally transmitted by 10 kV and 35 kV power grids, and some important departments reach 110 kV, which are generally transmitted through overhead high-voltage wires. In 2007, a severe snow disaster occurred in the south of my country, which caused the high-voltage power supply lines to break due to the heavy ice hanging on the lines, causing the wires to break and the poles to collapse, resulting in the inability of various departments to use electricity and causing huge economic losses to the country. At that time, only mechanical deicing was available. method, the efficiency is too low, and there are even casualties. In addition, the exposed overhead high-voltage wires are very easy to be attacked by the military because they ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D123/08C09D7/12C09D5/25H01B3/44
Inventor 金丰年徐迎戴银所鲁钢
Owner ENG COLLEGE OF ENG CORPS PLA UNIV OF SCI & TECH
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