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Production method for inorganic compound conductive powder body

A conductive powder and inorganic composite technology, applied in the direction of cable/conductor manufacturing, conductors, conductive materials, etc., can solve the problems of poor water resistance, oil resistance, affecting the service life of the base material, unstable conductivity, etc., and achieve stable conductivity , Improve the use value, the effect of stable product performance

Inactive Publication Date: 2008-05-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of carbon-based conductive powder is that carbon black has poor dispersibility, the color of the product is dark, the color is single, it is not easy to color, and the production and use are easy to pollute the working environment; while metal powder is easy to oxidize to form non-conductive metal oxides, and the conductive properties Unstable, poor corrosion resistance, has the defect of interfering with radio waves, and is expensive and dark in color; when organic conductive powder is used as a filler, it is not resistant to high temperature, not corrosion resistant, and has poor water resistance and oil resistance, and the antistatic property is also unstable. It can only be used in an environment with a relative humidity greater than 60%; most metal oxide powders have defects of poor conductivity and dark color, and are prone to precipitation and stratification during use, which affects the service life of the base material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation of composite conductive powder with soft kaolinite minerals in a certain place in Guangxi as the matrix includes the following steps:

[0020] (1) 40g of kaolin powder and 160g of deionized water are made into a solution with a solid content of 20%, adding polyethylene glycol as a dispersant, and fully stirring in an electric heating constant temperature water bath at 50°C to make the mineral particles disperse evenly, Made into suspension slurry.

[0021] (2) Prepare SnCl with 1.5mol / L hydrochloric acid 4 ·5H 2 O acid solution with a concentration of 0.1mol / L, placed on a magnetic stirrer to completely dissolve, and the molar doping ratio of 92:8 to weigh the corresponding SbCl 3 Dissolve in the above acid solution and continue stirring to mix evenly.

[0022] (3) Acidic mixed solution and lye precipitating agent concentration are 20% ammoniacal liquor, drip in the reactor that fills the evenly dispersed kaolin suspension and keep stirring by liquid ...

Embodiment 2

[0025] The preparation of composite conductive powder with soft kaolinite minerals in a certain place in Guangdong as a matrix includes the following steps:

[0026] (1) 10g of kaolin powder and 90g of deionized water are made into a solution with a solid content of 10%, adding sodium hexametaphosphate as a dispersant, and fully stirring in an electric heating constant temperature water bath at 60°C to make the mineral particles disperse evenly, Made into suspension slurry.

[0027] (2) Prepare SnCl with 1.5mol / L hydrochloric acid 4 ·5H 2 O acid solution with a concentration of 0.1mol / L, placed on a magnetic stirrer to completely dissolve, and weighed the corresponding SbCl with a molar doping ratio of 86:14 3 Dissolve in the above acid solution and continue stirring to mix evenly.

[0028] (3) Acidic mixed solution and lye precipitating agent concentration are 20% ammoniacal liquor, drip in the reactor that fills the evenly dispersed kaolin suspension and keep stirring by ...

Embodiment 3

[0031] The preparation of composite conductive powder with calcined kaolin in a certain place in Guangdong as the matrix includes the following steps:

[0032] (1) After grinding 5g of kaolin powder calcined at 700°C for 2.5h, make a solution with a solid content of 5% with 95g of deionized water, add polyethylene glycol as a dispersant, and place it in an electric heating constant temperature water bath at 60°C Fully stir in the medium to disperse the mineral particles evenly and make a suspension slurry.

[0033] (2) Prepare SnCl with 1.5mol / L hydrochloric acid 4 ·5H 2 O acid solution with a concentration of 0.1mol / L, placed on a magnetic stirrer to completely dissolve, and weighed the corresponding SbCl with a molar doping ratio of 86:14 3 Dissolve in the above acid solution and continue stirring to mix evenly.

[0034](3) Acidic mixed solution and lye precipitating agent concentration are 20% ammoniacal liquor, drip in the reactor that fills the evenly dispersed kaolin ...

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Abstract

The invention relates to a preparation method for tin oxide-doped composite conductive powder using kaolinite as base material. The invention is characterized in that dispersing agent is mixed with kaolinite ore to produce homogeneous and dispersed suspended ore slurry; chemical co-precipitation method is adopted for homogeneous precipitation in the form of hydroxide or hydrous oxide, then the composite conductive powder is obtained after filtering, washing, gas-liquid separation, calcination and grinding of precipitation products. The invention has the advantages of greatly reduced preparation cost of conductive powder, greatly improved use value of kaolinite resources, easy dispersion of the composite conductive powder, stable quality, light powder color, good conductivity, conductive additives for various colors (such as white) and wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of an inorganic composite conductive powder, in particular to a preparation method of an antimony-doped tin oxide composite conductive powder with kaolinite as a matrix, and belongs to the technical field of conductive materials. Background technique [0002] With the continuous advancement of social science and technology, people's requirements for conductive materials are also gradually increasing. Conductive powder is a kind of functional material, which is widely used in various industrial sectors such as petroleum, chemical industry, communication, electronics, automobile, ceramics, textile, aerospace, papermaking, printing, powder processing and people's daily life. When added to plastics, rubber, fibers, paints and coatings that are prone to static electricity due to friction, impact, etc., it can be made into anti-static products to prevent static electricity from accumulating to a certain extent, r...

Claims

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Application Information

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IPC IPC(8): H01B1/00H01B13/00B01J19/00
Inventor 杨华明胡佩伟
Owner CENT SOUTH UNIV
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