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Preparation method of modified carbon-based electrode paste

A technology of electrode paste and modified carbon, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve the problems of failing to meet market requirements, poor thermal shock resistance, and high resistivity , to achieve the effect of increasing the degree of structural disorder, increasing the strength and reducing the resistivity

Inactive Publication Date: 2018-11-06
王召惠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the defects of low strength, high resistivity and poor thermal shock resistance in the current common electrode paste, which cannot meet the market requirements, a preparation method of modified carbon-based electrode paste is provided

Method used

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  • Preparation method of modified carbon-based electrode paste

Examples

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Effect test

example 1

[0024]Weigh 65g of multi-walled carbon nanotubes and pour them into a muffle furnace, heat treatment for 35min at a temperature of 640°C to obtain oxidized multi-walled carbon nanotubes, then mix the oxidized multi-walled carbon nanotubes with 36% concentrated Hydrochloric acid was mixed with a mass ratio of 1:3 and placed in a beaker and stirred for 16 minutes to obtain purified multi-walled carbon nanotubes. The purified multi-walled carbon nanotubes were washed with distilled water for 4 times until the washing liquid was neutral, and placed in an oven. Dry at 95°C for 45 minutes to obtain dry multi-walled carbon nanotubes; mix dry multi-walled carbon nanotubes, polytetrafluoroethylene and iodine chloride in a reaction kettle at a mass ratio of 7:2:1, Under the condition of temperature of 240°C, the reaction was sealed and stirred for 2 hours. After the stirring reaction was completed, the reaction product was taken out, and the reaction product was washed with absolute etha...

example 2

[0026] Weigh 67g of multi-walled carbon nanotubes and pour them into a muffle furnace, heat treatment for 40min at a temperature of 680°C to obtain oxidized multi-walled carbon nanotubes, and then mix the oxidized multi-walled carbon nanotubes with 36% concentrated Hydrochloric acid was mixed with a mass ratio of 1:3 and placed in a beaker and stirred for 18 minutes to obtain purified multi-walled carbon nanotubes. The purified multi-walled carbon nanotubes were washed with distilled water for 4 times until the washing liquid was neutral, and placed in an oven. Dry at 97°C for 53 minutes to obtain dry multi-walled carbon nanotubes; mix dry multi-walled carbon nanotubes, polytetrafluoroethylene and iodine chloride in a reaction kettle at a mass ratio of 7:2:1, Sealed and stirred for 3 hours at a temperature of 280 ° C. After the stirred reaction was completed, the reaction product was taken out and washed with absolute ethanol for 3 times to make the washing solution neutral, an...

example 3

[0028] Weigh 70 g of multi-walled carbon nanotubes and pour them into a muffle furnace, and heat-treat for 45 minutes at a temperature of 720 ° C to obtain oxidized multi-walled carbon nanotubes. Hydrochloric acid was mixed with a mass ratio of 1:3 and placed in a beaker and stirred for 21 minutes to obtain purified multi-walled carbon nanotubes. The purified multi-walled carbon nanotubes were washed with distilled water for 5 times until the washing liquid was neutral, and placed in an oven. Dry at 100°C for 60 minutes to obtain dry multi-walled carbon nanotubes; mix dry multi-walled carbon nanotubes, polytetrafluoroethylene and iodine chloride in a reaction kettle at a mass ratio of 7:2:1, Seal and stir the reaction for 4 hours at a temperature of 320°C. After the stirring reaction is completed, take out the reaction product, and wash the reaction product with absolute ethanol 4 times to make the washing liquid neutral, and place it in an oven at a temperature of 100°C. Dry ...

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Abstract

The invention relates to the technical field of conductive material preparation, in particular to a preparation method of a modified carbon-based electrode paste. The modified carbon-based electrode paste is prepared by using petroleum coke as the solid carbon material, coal tar pitch as the binder, modified multi-walled carbon nano-tubes as the modifier, cordierite powder and alumina powder as auxiliary materials. Firstly, the coal tar pitch and the petroleum coke are melted to obtain a melt solution, then the multi-walled carbon nano-tubes are purified, and then the surface of the purified multi-walled carbon nano-tubes is thermally doped with double halogen elements (chlorine and iodine elements). In addition, the fillers are used to effectively fill the inner part of the system, whichis conducive to improving the strength of the electrode paste. The invention mixes mixed oxides with sodium carboxymethyl cellulose and zirconia particles by ball milling and heating synthesizing to obtain the cordierite powder, and continues to add alumina powder to the system, so as to effectively improve the thermal conductivity of the electrode paste. The invention has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of conductive material preparation, in particular to a preparation method of a modified carbon-based electrode paste. Background technique [0002] Electrode paste is a conductive material for electric furnace equipment such as ferroalloy furnaces and calcium carbide furnaces. Electrode paste is also called self-baking electrode. It relies on the heat in the submerged arc furnace to complete the roasting. Therefore, matching the consumption speed of the electrode with the roasting speed is the key to the use of the electrode paste. The production of traditional electrode paste uses steam, electricity or coal as the heat transfer source (the heating temperature is generally 120-140°C), and uses calcined anthracite, calcined petroleum coke, metallurgical coke, artificial graphite chips, etc. , sieving, and batching, using coal tar pitch and coal tar as binders, kneading, pasting and forming. [0003] The ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B1/24
CPCH01B13/00H01B1/24
Inventor 王召惠杨明忠张建初
Owner 王召惠
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