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Preparation method of gas-generating arc-extinguishing material for high-voltage fuse

A technology of high-voltage fuses and arc-extinguishing materials, applied in electrical components, emergency protection devices, circuits, etc., can solve the problems of reduced safety factor of fuses, poor frost resistance, and size changes, and achieve reliable arc-extinguishing performance, Obvious comprehensive technical and economic effect, not easy to soften the effect

Active Publication Date: 2018-11-16
宿州市徽腾知识产权咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem mainly solved by the present invention is: for the existence of the traditional red steel paper as the gas-generating arc-extinguishing material, it is easy to be affected by moisture, easy to be corroded by microorganisms to change the size, and the frost resistance is not good, which leads to the failure of the fuse in the outdoor use process. To solve the problem of reduced safety factor, a preparation method of gas-generating arc-extinguishing material for high-voltage fuses is provided. In the present invention, nylon fibers are mixed with biogas liquid for fermentation and activation. Under oxygen conditions, the surface of the fiber is grafted with siloxane groups, and the nano-aluminum hydroxide microspheres produced by the hydrolysis of sodium metaaluminate using its static electricity and chemical adsorption form a rough surface structure with superhydrophobic and highly oleophobic properties after drying. , then knead it with urea-formaldehyde resin, etc., dry it and press it into a sheet to obtain a gas-generating arc-extinguishing material for high-voltage fuses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024]Weigh 200g of nylon 6 fiber, wrap it with gauze, immerse it in a fermenter containing 2L of biogas liquid, and ferment it at a constant temperature for 6 hours at a temperature of 30°C, then separate and remove the gauze, take out the nylon 6 fiber, and wash it with deionized water Wash 3 times, then immerse it in a beaker filled with 600mL ethanol solution with a mass fraction of 70%, and then transfer the beaker to an ultrasonic oscillator, under the condition of 200W power, sonicate for 15min, filter, collect nylon 6 fibers, and It was transferred to an oven, dried at 75°C for 2 hours, and then cut into nylon staple fibers with a length of 6 mm; in a three-necked flask filled with 60 mL of anhydrous tetrahydrofuran, 0.6 g of potassium tert-butoxide, 0.3 g of bicyclic Hexyl-18-crown ether-6, 10g of the nylon staple fiber obtained above, and then pass nitrogen gas into the three-necked flask at a rate of 3mL / min until all the air is replaced, and then place the flask in ...

example 2

[0027] Weigh 260g of nylon 6 fiber, wrap it with gauze, immerse it in a fermenter containing 3L of biogas liquid, and ferment it at a constant temperature for 7 hours at a temperature of 32°C, then separate and remove the gauze, take out the nylon 6 fiber, and wash it with deionized water Wash 4 times, then immerse it in a beaker filled with 700mL ethanol solution with a mass fraction of 72%, and then transfer the beaker to an ultrasonic oscillator, under the condition of 250W power, ultrasonic 18min, filter, collect nylon 6 fiber, and It was transferred to an oven, dried at 78°C for 3 hours, and then cut into nylon staple fibers with a length of 7 mm; in a three-necked flask filled with 65 mL of anhydrous tetrahydrofuran, 0.7 g of potassium tert-butoxide, 0.4 g of bicyclic Hexyl-18-crown ether-6, 12g of the nylon staple fiber obtained above, and then pass nitrogen gas into the three-necked flask at a rate of 4mL / min until all the air is replaced, and then place the flask in a ...

example 3

[0030] Weigh 300g of nylon 6 fiber, wrap it with gauze, immerse it in a fermenter containing 4L of biogas liquid, and ferment it at a constant temperature for 8 hours at a temperature of 35°C, then separate and remove the gauze, take out the nylon 6 fiber, and wash it with deionized water Wash 5 times, then immerse it in a beaker filled with 800mL of ethanol solution with a mass fraction of 75%, and then transfer the beaker to an ultrasonic oscillator. Under the condition of 300W power, ultrasonic for 20min, filter, collect nylon 6 fiber, and It was transferred to an oven, dried at 80°C for 4 hours, and then cut into 8 mm long nylon staple fibers; in a three-necked flask filled with 75 mL of anhydrous tetrahydrofuran, 0.8 g of potassium tert-butoxide, 0.5 g of bicyclic Hexyl-18-crown ether-6, 15g of the nylon staple fiber obtained above, and then pass nitrogen into the three-necked flask at a rate of 5mL / min until all the air is replaced, and then place the flask in a digital s...

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Abstract

The invention discloses a preparation method of a novel gas arc-extinguishing material for a high voltage fuse, and belongs to the technical field of electrical equipment. The preparation method comprises the following steps: firstly carrying out mixed fermentation and activation on nylon fiber and marsh gas liquid, cutting the fiber into short fiber after ultrasonic cleaning, then reacting with organosilane in an oxygen-free condition so that a silicon oxygen group is grafted on the surface of the fiber, using the short fiber with the silicon oxygen group to electrostatically and chemically adsorb the nano aluminum hydroxide microparticles generated by hydrolysis of sodium metaaluminate, forming a roughened surface structure with super-hydrophobic and highly oleophobic characteristics after drying, then kneading the roughened surface structure with urea resin and the like, and carrying out hot-pressing sheet formation after drying to obtain the gas arc-extinguishing material for the high voltage fuse. The arc-extinguishing material obtained in the invention is benefited from hydrophobic and oleophobic characteristics of the modified nylon fiber, and the surface of the arc-extinguishing material is a composite roughened interface consisting of a solid substance and air, so that corrosion generated by water and microorganism adhesion can be effectively avoided, the anti-freezing performance is greatly improved, and the material can be popularized and used as an arc-extinguishing material for outdoor fuse.

Description

technical field [0001] The invention discloses a preparation method of a novel gas-generating arc-extinguishing material for a high-voltage fuse, and belongs to the technical field of electric power equipment. Background technique [0002] Gas-generating arc-extinguishing materials are widely used in high-voltage electrical products such as 10-35 kV fuses, gas-generating switches, and lightning arresters. This type of high-voltage electrical products has a large volume and a wide range, and its level and quality play a decisive role in the safe and reliable operation of urban and rural power grids. [0003] The arc generated when the high-voltage electrical appliance is disconnected can be regarded as a plasma in a state of thermal equilibrium, which contains a large number of electrons and ions, and has high temperature and energy. When the electrical contacts are disconnected, the high-energy arc acts on the gas-generating arc-extinguishing material in the arc-extinguishi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H85/42H01H85/042
CPCH01H85/042H01H85/42
Inventor 许斌许洪祥
Owner 宿州市徽腾知识产权咨询有限公司
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