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A compound conductive powder with BaSO4 and its making method

A technology of composite conductive powder and barium sulfate powder, which is applied in the direction of sulfide conductors, oxide conductors, non-metallic conductors, etc., can solve the problems of high cost, high price, and poor dispersion of carbon fibers, and achieve excellent electrical conductivity and low production costs , good dispersion effect

Inactive Publication Date: 2008-02-13
FOSHAN ONMILLION NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of carbon black and graphite in the carbon system is low, the raw materials are easy to obtain, and the specific gravity is small, but its dispersibility is poor, the color of the product is dark, it is not easy to color, and the production and use are easy to pollute the working environment
Carbon fiber is expensive and difficult to process
The metal system mainly includes gold, silver, copper, nickel, etc. Gold powder and silver powder have high chemical stability and good conductivity, but they are expensive. Copper powder and nickel powder have poor chemical stability and are easy to oxidize. drop even non-conductive
Organic conductive materials are only suitable for certain environments because they are not resistant to high temperature and corrosion, and have poor water resistance, oil resistance, durability, and unstable antistatic properties.
[0004] Due to the above reasons, the range of application of these materials has been greatly limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A. Accurately weigh 100g of barite ore powder and 500mL of distilled water with an average particle size of less than 200nm respectively, add them into the reactor, add 0.25g of polyphosphoric acid and stir until the barite ore powder containing barium sulfate is uniformly dispersed, And add a certain amount of sulfuric acid, stir evenly to make a suspension, and adjust the pH value of the suspension slurry to 1;

[0036] B. 2.1975g SnCl 4 ·5H 2 O with 0.0143gSbCl 3 Dissolve in 13mL of hydrochloric acid with an equivalent of 8N to make an acidic mixed solution, the concentration of tin in the acidic mixed solution is 0.5mol / L, and the molar ratio of tin and antimony is controlled to be 100:1.

[0037] C. Prepare 2mol / L ammonia water, add dropwise to the suspension pulp obtained in step A simultaneously with the mixed solution obtained in step B under stirring conditions, adjust the flow of acid and lye, maintain the pH value of the reaction system at 1, and control th...

Embodiment 2

[0042] A. Accurately weigh 10g of barite powder with an average particle size of less than 200nm and 10mL of distilled water respectively, add them to the reactor, then add 0.005g of polyphosphoric acid and stir, after the barite powder is evenly dispersed, add a certain amount of sulfuric acid, and stir evenly , and its pH value is adjusted to be 1 to make a suspension slurry;

[0043] B. Add 4.395g SnCl 4 ·5H 2 O with 0.286gSbCl 3 Dissolve in 125mL of hydrochloric acid with an equivalent of 8N to make an acidic mixed solution, the concentration of tin in the acidic mixed solution is 0.1mol / L, and the molar ratio of tin and antimony is controlled to be 10:1;

[0044] C. Prepare 1mol / L ammonia water, add dropwise to the suspension pulp obtained in step A simultaneously with the mixed solution obtained in step B under stirring conditions, adjust the flow of acid and lye, maintain the pH value of the reaction system at 1, and control the reaction The temperature is 60°C, the ...

Embodiment 3

[0049] A. Accurately weigh 20g of barite ore powder with an average particle size of less than 200nm and 100mL of distilled water, add them into the reactor, then add 0.005g of polyphosphoric acid and stir, and after the barite ore powder is evenly dispersed, add a certain amount the sulfuric acid, stir evenly, adjust its pH value to be 4, make suspension slurry;

[0050] B. Mix 8.79g SnCl 4 ·5H 2 O with 1.144gSbCl 3 Dissolve in 50mL of hydrochloric acid with an equivalent of 8N to make an acidic mixed solution, the concentration of tin in the acidic mixed solution is 0.5mol / L, and the molar ratio of tin and antimony is 5:1.

[0051] C. Prepare 1mol / L ammonia water, add the mixed solution obtained in step B dropwise to the suspension slurry obtained in step A under stirring conditions, adjust the flow of acid and lye, maintain the pH value of the reaction system at 4, and control the reaction The temperature is 70°C, the stirring speed is 300 rpm, and the reaction time is 2...

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Abstract

The invention discloses a composite conductive powder containing barium sulfate, which comprises a powder containing barium sulfate. The surface of the powder containing barium sulfate is coated with tin dioxide and antimony trioxide. The composite conductive powder containing barium sulfate in the invention is characterized by small particle size, high white degree, good dispersion, good conductivity, low production cost, simple process and fitness of industrial production.

Description

technical field [0001] The invention relates to a composite conductive powder containing barium sulfate and a preparation method thereof. Background technique [0002] Conductive powder is a functional material, which is mainly used as a filling material for various polymer materials such as plastics, fibers, rubbers, coatings, etc., so that it has the functions of conductivity, antistatic, shielding electromagnetic waves, etc. It has been widely used in petroleum, chemical, Aviation, military, electronics, communications, automobiles, textiles and other industries. [0003] Conductive powder is generally divided into carbon series (carbon black, graphite, carbon fiber), metal series (metal powder, metal sheet, metal fiber), organic series, metal oxide series and composite series. The cost of carbon black and graphite in the carbon system is relatively low, the raw materials are easy to obtain, and the specific gravity is small, but its dispersibility is poor, the color of ...

Claims

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Application Information

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IPC IPC(8): H01B1/06H01B1/08H01B1/10B22F9/00
Inventor 陈焰刘晓荣刘长盛
Owner FOSHAN ONMILLION NANO MATERIALS
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