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A Coating for All-round Improvement of the Performance of Overhead Conductors

A technology for overhead wires and coatings, applied in polyurea/polyurethane coatings, coatings, conductors, etc., can solve problems such as damage to the surface coating of wires, poor aging resistance of coatings, poor self-cleaning ability of coatings, etc., to achieve good self-cleaning Effects of cleanability, improved aging resistance, and high surface heat scattering coefficient

Active Publication Date: 2016-05-04
SHANGHAI ELECTRIC CABLE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The anti-aging performance of the coating is poor. Compared with the service life of the steel-reinforced aluminum strand of 30-40 years, the service life of the general coating is 3-5 years under the influence of external light, moisture and other environmental conditions
Compared with the service life of the wire body, it is very short, which makes the technical path of using coatings to improve the surface condition of the wire and thereby increase the service life of the wire to be greatly restricted
[0005] 2) The self-cleaning ability of the paint is poor. In the external environment, it is easy to absorb dirt, which will greatly damage the coating condition of the wire surface, so that the wire surface after coating the paint no longer has the expected anti-ice and snow functions.
[0006] 3) Coating the existing coating only improves the anti-icing ability of the wire, and does not improve the performance of other wires

Method used

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  • A Coating for All-round Improvement of the Performance of Overhead Conductors
  • A Coating for All-round Improvement of the Performance of Overhead Conductors
  • A Coating for All-round Improvement of the Performance of Overhead Conductors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Mix FEVE fluorocarbon resin and butyl acetate at a mass percentage ratio of 1:1 and disperse with a high-speed disperser for about 10 minutes, then grind the mixture with a sand mill until the fineness reaches 25 μm to obtain a fluorocarbon resin dispersion.

[0042] 2) Mix the fluorocarbon resin dispersion and hexamethylene diisocyanate biuret at a ratio of 16:3 by mass, disperse at a high speed for about 15 minutes, and then obtain a mixed solution.

[0043] 3) Add zinc oxide to the mixed solution prepared above at a mass percentage of 9:1, and when heated to 30-50°C, fully stir and mix it evenly with a high-speed disperser, and grind it to a fineness of 30 μm, that is The trolley wire coating A with the required properties can be obtained.

Embodiment 2

[0045] 1) Mix FEVE fluorocarbon resin and methyl isobutyl ketone at a ratio of 1.5:1 by mass and disperse with a high-speed disperser for about 15 minutes, then grind the mixture with a sand mill until the fineness reaches 25 μm to obtain a fluorocarbon resin dispersion .

[0046] 2) Mix the fluorocarbon resin dispersion and hexamethylene diisocyanate biuret at a ratio of 5:1 by mass, disperse at a high speed for about 15 minutes, and then obtain a mixed solution.

[0047] 3) Add titanium oxide to the mixed solution prepared above at a mass percentage of 9:1, and when heated to 30-50°C, fully stir and mix it evenly with a high-speed disperser, and grind it to a fineness of 30 μm, that is A trolley wire coating B with the required properties can be obtained.

Embodiment 3

[0049] 1) Mix FEVE fluorocarbon resin and butyl acetate at a ratio of 1.3:1 by mass and disperse it with a high-speed disperser for about 10 minutes, then grind the mixture with a sand mill to a fineness of 25 μm to obtain a fluorocarbon resin dispersion.

[0050] 2) Mix the fluorocarbon resin dispersion and hexamethylene diisocyanate trimer at a ratio of 6:1 by mass, disperse at a high speed for about 20 minutes, and then obtain a mixed solution.

[0051] 3) Add zinc oxide to the mixed solution prepared above at a mass percentage of 10:1, and when heated to 30-50°C, fully stir and mix it evenly with a high-speed disperser, and grind it to a fineness of 30 μm, that is A trolley wire coating C with the required properties can be obtained.

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Abstract

The invention relates to the technical field of overhead conductors of electric transmission lines, in particular to a coating for improving the performance of an overhead conductor comprehensively. The overhead conductor coating comprises the components in percentage by weight as follows: 38-59% of FEVE (fluoro ethylene-vinyl ether) fluorocarbon resin, 30-50% of an organic solvent, 10-20% of a curing agent and 1-12% of an auxiliary agent. The coating has good ageing resistance and self-cleaning performance as well as a high heat radiation coefficient. The surface condition of a common steel-core aluminium twisted wire is improved comprehensively through the application of the coating, so that the carrying capacity, the ant-icing performance and the corona characteristic of a common steel-cored aluminium strand are improved.

Description

technical field [0001] The invention relates to the technical field of overhead wires of power transmission lines, in particular to a coating for comprehensively improving the performance of overhead wires. Background technique [0002] With the rapid development of the economy and the improvement of people's living standards, the demand for electricity has also increased significantly, so it is necessary to continuously increase the transmission capacity of transmission lines. Due to the limitations of the transmission cross-sectional area and operating temperature of the traditional steel-reinforced aluminum stranded wire, the improvement of the transmission capacity is limited. Therefore, people have developed a variety of capacity-enhancing wires, such as heat-resistant aluminum alloy series wires that increase the capacity of the line by increasing the operating temperature, and increase the capacity of the line by increasing the conductivity of the conductive material ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/12C09D175/04C09D7/12H01B7/17
Inventor 党朋刘斌吴细毛郑秋曾伟王新营王乐黄国飞
Owner SHANGHAI ELECTRIC CABLE RES INST
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