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A preparation method of an external insulating material for a high-voltage outdoor composite insulator

A composite insulator and external insulation technology, applied in insulators, electrical components, circuits, etc., can solve the problems of flashover accidents, decreased insulation performance, and reduced material surface hydrophobicity, etc., to extend service life, increase weather resistance, and excellent resistance. The effect of UV properties

Active Publication Date: 2018-03-30
盐城爱达斯绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is: Aiming at the problem that the surface of the external insulating material of the traditional composite insulator is aged during the outdoor use process during the preparation and use, reducing the hydrophobicity of the material surface, resulting in a decline in insulation performance and even causing a flashover accident , provides a method for preparing the outer insulation material of high-voltage outdoor composite insulators. The invention mixes rice husks with fly ash, uses the biogas liquid supernatant to ferment and consume rice husk organic matter, and dissolves the metal elements in it, and then filters and dries Finally, the filter cake is calcined at high temperature to fully remove the organic matter, and then the obtained micro-nano powder is made into a modified sol, and then reacted with the self-prepared acrylate emulsion to obtain a composite emulsion, which is spin-coated on the surface of the insulator and dried Finally, the outer insulation material of high-voltage outdoor composite insulators is obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020]Weigh 300g of rice husks and 200g of fly ash in turn, place them in an oven, and dry them to constant weight at a temperature of 105°C to obtain a dry mixture, which is then transferred to a universal grinder, crushed and passed through a 325-mesh sieve. Obtain mixed powder; measure 1L biogas liquid, centrifuge, remove the lower layer of sediment, collect the supernatant, and transfer it to a fermenter, then add 300g of the above-mentioned mixed powder, 30mL mass fraction is 6-8% citric acid solution, at a temperature of 35°C and a rotational speed of 120r / min, ferment in a constant-temperature sealed container for 3 days, filter with suction, remove the filtrate, and wash the filter cake with deionized water until the washing liquid is neutral; the above-mentioned washed filter cake Transfer to an oven, dry to constant weight at a temperature of 105°C, then place the dried filter cake in a muffle furnace, and feed nitrogen into the furnace at a rate of 3mL / min. Raise th...

example 2

[0023] Weigh 400g of rice husks and 260g of fly ash in turn, place them in an oven, and dry them to constant weight at a temperature of 108°C to obtain a dry mixture, which is then transferred to a universal grinder, crushed and passed through a 350-mesh sieve. Obtain mixed powder; measure 1.5L biogas liquid, centrifuge, remove the lower layer of sediment, collect the supernatant, and transfer it to a fermenter, then add 350g of the above-mentioned mixed powder, 45mL mass fraction is 7% citric acid solution , at a temperature of 36°C and a rotational speed of 140r / min, ferment for 4 days at a constant temperature, filter with suction, remove the filtrate, wash the filter cake with deionized water until the washing liquid is neutral; transfer the above washed filter cake to Put it into an oven, dry it to constant weight at a temperature of 108°C, then place the dried filter cake in a muffle furnace, and feed nitrogen gas into the furnace at a rate of 4 mL / min. The temperature i...

example 3

[0026] Weigh 500g of rice husks and 300g of fly ash in sequence, place them in an oven, and dry them to constant weight at a temperature of 110°C to obtain a dry mixture, which is then transferred to a universal pulverizer, and passed through a 400-mesh sieve after pulverization. Obtain mixed powder; measure 2L biogas liquid, centrifuge, remove the lower layer of sediment, collect the supernatant, and transfer it to a fermenter, then add 400g of the above-mentioned mixed powder, 50mL mass fraction is 8% citric acid solution, At a temperature of 38°C and a rotational speed of 160r / min, ferment for 5 days at a constant temperature in an airtight manner, filter with suction, remove the filtrate, and wash the filter cake with deionized water until the washing liquid is neutral; transfer the above-mentioned washed filter cake to In an oven, dry to constant weight at a temperature of 110°C, then place the dried filter cake in a muffle furnace, and feed nitrogen into the furnace at a ...

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Abstract

The present invention discloses a preparation method for preparing the external insulation material of a high-voltage outdoor composite insulator and belongs to the technical field of electric materials. According to the technical scheme of the invention, rice husks are mixed up with fly ashes. Through the fermentation of the supernatant of a biogas broth, the organic matters of rice husks are consumed and then metal elements therein are dissolved. After the filtering and drying process, an obtained filter cake is calcined at a high temperature, so that organic matters are sufficiently removed. After that, resulting micro nano powders are made into a modified sol, and the modified sol is subjected to reaction with a self-prepared acrylate emulsion. In this way, a composite emulsion is obtained. The composite emulsion is coated onto the surface of an insulator through the spin-coating process. After the drying process, the external insulation material of the high-voltage outdoor composite insulator is prepared. According to the technical scheme of the invention, a micro-nano structure similar to a lotus-leaf-like surface is formed on surface of the insulator by utilizing micro-nano particles contained in the composite emulsion. Therefore, the super-hydrophobic effect is realized, and the ultraviolet light is effectively absorbed. Meanwhile, the anti-aging property of the insulator is increased and the service life of the outdoor insulator is prolonged.

Description

technical field [0001] The invention discloses a method for preparing an outer insulating material of a high-voltage outdoor composite insulator, and belongs to the technical field of electric power materials. Background technique [0002] Outdoor insulation plays an important role in the entire insulation system, and insulators play a pivotal role in outdoor insulation systems, especially in outdoor high-voltage insulation systems, such as power transformation and distribution systems. Due to the complex outdoor environment, high performance requirements are put forward for the external insulation materials of outdoor insulators, such as excellent high and low temperature resistance, ultraviolet aging resistance, biological corrosion resistance and chemical corrosion resistance, and high strength and high hydrophobicity. Wait. Insulators can be roughly divided into two types: porcelain insulators and non-porcelain insulators according to the different external insulating m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B19/04H01B17/50H01B17/52
CPCH01B17/50H01B17/525H01B19/04
Inventor 徐小斌徐中存孙占林徐仲仲
Owner 盐城爱达斯绝缘材料有限公司
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