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Method for preparing anti-pollution flashover insulators

An anti-pollution flashover technology for insulators, applied to insulators, electrical components, circuits, etc., can solve the problems of frequent pollution flashover accidents of insulators, and achieve the goals of preventing pollution flashover accidents, good photocatalytic self-cleaning performance, and preventing pollution flashover events Effect

Inactive Publication Date: 2013-09-04
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increasingly serious environmental pollution, more and more insulators in transmission lines have frequent pollution flashover accidents due to various pollution on the surface

Method used

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  • Method for preparing anti-pollution flashover insulators
  • Method for preparing anti-pollution flashover insulators
  • Method for preparing anti-pollution flashover insulators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix metatitanic acid and deionized water at a concentration of 0.1mol / L and stir for 15 minutes to obtain a mixed solution; slowly add hydrogen peroxide to the above mixed solution at a molar ratio of titanium ions: hydrogen peroxide = 1:1 at 25°C , to obtain the sol precursor solution, the above sol precursor solution according to the titanium ion: SiO 2 Sol (SiO 2 content is 20wt%) and mixed at a mass ratio of 1:1 and stirred evenly to obtain a composite sol; add vanadium oxalate to the above sol at an atomic percentage of 5%, stir and dissolve, and spray on the just-prepared porcelain Coating film on the surface of the insulator; the final loaded film is dried at 120°C for 30 minutes, and then heat-treated at 350°C to obtain an anti-fouling flashover insulator with good adhesion to the substrate. figure 1 The FESEM picture of the surface of the sample prepared in Example 1 shows that the film layer is very uniform, consisting of titanium oxide particles with a size ...

Embodiment 2

[0021] Mix metatitanic acid and deionized water at a concentration of 2mol / L and stir for 90 minutes to obtain a mixed solution; slowly add hydrogen peroxide to the above mixed solution at a molar ratio of titanium ions: hydrogen peroxide = 1:5 at 40°C, After stirring for 3 hours, the sol precursor solution was obtained, and the above sol precursor solution was prepared according to the titanium ion: SiO 2 Sol (SiO 2 content is 40wt%) and the mass ratio is 0.5:1, mixed and stirred evenly to obtain a composite sol; add vanadium citrate to the above sol at an atomic percentage of 0.1%, stir and dissolve to obtain a doped coating film precursor , using the dip coating process to coat the surface of the just prepared porcelain insulator, the insulator sample after coating was dried at 140°C for 20 minutes, and after heat treatment at 600°C, the anti-pollution flashover insulator with good adhesion to the substrate was obtained. figure 2 For: the FESEM picture of the section of t...

Embodiment 3

[0023] Mix metatitanic acid and deionized water at a concentration of 0.5mol / L and stir for 30 minutes to obtain a mixed solution; slowly add hydrogen peroxide to the above mixed solution at a molar ratio of titanium ions: hydrogen peroxide = 1:10 at 60°C , and then stirred for 0.5h to obtain the sol precursor solution, the above sol precursor solution according to the titanium ion: SiO 2 Sol (SiO 2 The content is 5wt%) and the mass ratio is 5:1. After mixing, stir evenly to obtain a composite sol; add vanadium acetate to the above sol in an amount of 1% atomic percentage, stir and dissolve, and obtain a doped coating film precursor. Use the dip coating process to coat the surface of the just-prepared porcelain insulator. After the coated insulator sample is dried at 120°C for 60 minutes, it is heat-treated at 550°C to obtain an anti-fouling flashover insulator with good adhesion to the substrate. image 3 It is: a schematic diagram of the degradation data of 200ml of methyle...

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Abstract

The invention discloses a method for preparing anti-pollution flashover insulators. The method for preparing the anti-pollution flashover insulators comprises the steps that firstly metatitanic acid is added into deionized water in proportion and mixed and stirred with the deionized water; mixed solution is slowly added to hydrogen peroxide in proportion, then the mixed solution and the hydrogen peroxide are stirred to obtain sol precursor solution, the sol precursor solution is added to SiO2 sol in proportion, and compound sol is obtained after the sol precursor solution and the SiO2 sol are mixed and evenly stirred; a vanadium doping source is added in the compound sol by atomic percentage, then the vanadium doping source is stirred and dissolved in the compound sol, and films coats the surfaces of common porcelain insulators which are just prepared in a spraying or dip-coating mode; finally thermal treatment is conducted on the common porcelain insulators after the common porcelain insulators are dried, and the anti-pollution flashover insulators which are well attached to a basal body are obtained. The prepared anti-pollution flashover insulators have excellent photocatalytic self-cleaning performance under sunlight, can effectively prevent pollution flashover accidents from occurring, and meanwhile have the functions of purifying air and beautifying environment.

Description

technical field [0001] The invention belongs to the field of inorganic materials and electric power, and relates to a preparation method of an anti-pollution flashover insulator. Background technique [0002] Porcelain insulators, as a traditional inorganic insulating material, play an important role in power transmission systems due to their good insulating properties, sufficient electrical strength and mechanical strength. However, with the increasingly serious environmental pollution, more and more insulators in transmission lines have frequent pollution flashover accidents due to various pollution on the surface. [0003] Nano-TiO 2 Since the self-cleaning film can have both photocatalytic and super-hydrophilic properties under ultraviolet light irradiation, it is possible to coat a layer of TiO on the surface of the porcelain insulator glaze 2 The thin film can oxidize and decompose the pollution attached to the surface of the insulator through light, and it is not e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/04H01B17/50
Inventor 曹文斌刘文秀全海芹吴洋曾艳萍蔡文河赵卫东
Owner UNIV OF SCI & TECH BEIJING
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