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Method for preparing pyrophillite-based antimony-doped tin oxide compound conductive powder

A technology of antimony-doped tin oxide and composite conductive powder, which is applied in tin oxide, cable/conductor manufacturing, circuits, etc., can solve the problems of organic conductive powder not being resistant to high temperature, unstable conductivity, and affecting the service life of base materials, etc. Achieve the effect of reducing preparation cost, good product stability and improving use value

Inactive Publication Date: 2011-11-23
HANGZHOU TENGSHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of carbon-based conductive powder are poor dispersion of carbon black, dark and single color of the product; metal powder is expensive, and is easily oxidized into non-conductive metal oxides, with unstable conductivity and poor corrosion resistance; organic When conductive powder is used as a filler, it is not resistant to high temperature and corrosion, and its water resistance and oil resistance are poor, and its antistatic property is also unstable. It can only be used in an environment with a relative humidity greater than 60%. Good, deep color defects, and prone to precipitation and stratification during use, affecting the service life of the base material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Mix 10g of pyrophyllite powder (325 mesh in particle size) and 90g of deionized water into a solution with a solid content of 10%, and place it in an electric heating constant temperature water bath with a temperature of 50°C to fully stir to disperse the mineral particles evenly , made pyrophyllite suspension slurry.

[0025] (2) Prepare SnCl with hydrochloric acid with a concentration of 2mol / L 4 ·5H 2 O and SbCl 3 hydrochloric acid solution in which SnCl 4 The concentration is 0.5mol / L, SbCl 3 The concentration of the solution is configured according to the molar ratio of Sn:Sb=5:1, and placed on a magnetic stirrer to dissolve completely.

[0026] (3) SnCl 4 The hydrochloric acid solution is added to the pyrophyllite suspension slurry, stirred and mixed evenly to obtain a mixed slurry of pyrophyllite and tin salt; wherein SnCl 4 Mass ratio to pyrophyllite (m SnC14 / m 叶腊石 ) is 80:100.

[0027] (4) SbCl 3 The hydrochloric acid solution and 1.5mol / L sodium...

Embodiment 2

[0031] (1) Mix 10g of pyrophyllite powder (800 mesh in particle size) and 40g of deionized water into a solution with a solid content of 20%, and place it in an electric heating constant temperature water bath with a temperature of 60°C to fully stir to disperse the mineral particles evenly , made pyrophyllite suspension slurry.

[0032] (2) Prepare SnCl separately with hydrochloric acid with a concentration of 1mol / L 4 ·5H 2 O and SbCl 3 hydrochloric acid solution in which SnCl 4 The concentration is 0.1mol / L, SbCl 3 The concentration of the solution is configured according to the molar ratio Sn:Sb=15:1, and placed on a magnetic stirrer to dissolve completely.

[0033] (3) SnCl 4 The hydrochloric acid solution is added to the pyrophyllite suspension slurry, stirred and mixed evenly to obtain a mixed slurry of pyrophyllite and tin salt; wherein SnCl 4 Mass ratio to pyrophyllite (m SnC14 / m 叶腊石 ) is 60:100.

[0034] (4) SbCl 3 The hydrochloric acid solution and 1mol / L...

Embodiment 3

[0038] (1) Prepare 15g of pyrophyllite powder (600 mesh particle size) and 85g of deionized water into a solution with a solid content of 15%, and place it in an electric heating constant temperature water bath with a temperature of 30°C to fully stir to disperse the mineral particles evenly , made pyrophyllite suspension slurry.

[0039] (2) Prepare SnCl with hydrochloric acid with a concentration of 1.5mol / L 4 ·5H 2 O and SbCl 3 hydrochloric acid solution in which SnCl 4 The concentration is 0.25mol / L, SbCl 3 The concentration of the solution is configured according to the molar ratio Sn:Sb=2:1, and placed on a magnetic stirrer to dissolve completely.

[0040] (3) SnCl 4 The hydrochloric acid solution is added to the pyrophyllite suspension slurry, stirred and mixed evenly to obtain a mixed slurry of pyrophyllite and tin salt; wherein SnCl 4 Mass ratio to pyrophyllite (m SnC14 / m 叶腊石 ) is 150:100.

[0041] (4) SbCl 3 The hydrochloric acid solution and 2mol / L sodium h...

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Abstract

The invention discloses a method for preparing pyrophillite-based antimony-doped tin oxide compound conductive powder. The method is characterized in that a chemical precipitation process for respectively dropwise adding a tin salt and an antimony salt is adopted. The method is a preparation method for the compound conductive powder, the surface of which is covered with a layer of antimony-doped tin oxide. The method provided by the invention can be used for reducing the preparation cost of conductive powder. The acquired powder has light color and excellent conductivity.

Description

(1) Technical field [0001] The invention relates to a preparation method of antimony-doped tin oxide composite conductive powder with pyrophyllite as a matrix, and belongs to the technical field of conductive materials. (2) Background technology [0002] With the rapid development of social economy, the range of application of various metal materials, plastics, fibers, rubber, and coatings is expanding day by day. These materials are easy to generate static electricity due to friction and impact, and the accumulation of static electricity to a certain extent will cause discharge, and may even cause breakdown or fire. At the same time, it will also cause certain interference to the radio receiver, making the radar unable to work normally. In order to prevent or eliminate static electricity, it is necessary to add conductive powder to paint, plastic, fiber, and rubber to make it conductive and antistatic, thereby eliminating the harm caused by static electricity. [0003] Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/02H01B13/00
Inventor 张俭张津瑞
Owner HANGZHOU TENGSHI TECH
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