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A synthetic method of a pupa doped tin dioxide conductive powder material

A technology of tin dioxide and synthesis method, which is applied in the direction of tin oxide, etc., to achieve the effect of reducing production cost, low price and low resistivity

Inactive Publication Date: 2011-12-21
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Relatively speaking, the hydrothermal method can synthesize antimony-doped tin dioxide at a lower temperature, but it must undergo a hydrothermal reaction at 120-360°C under solution conditions, which requires special special preparations for the use of nitric acid and other solvents. Pressure-resistant and acid-resistant equipment

Method used

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  • A synthetic method of a pupa doped tin dioxide conductive powder material
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Embodiment 1

[0025] (1) Weigh 5 grams of analytically pure tin particles and 1 gram of analytically pure antimony powder, place them in a 250 ml Erlenmeyer flask, and add 60 ml of 30% nitric acid;

[0026] (2) Magnetically stir the reaction at room temperature for 48 hours. After the reaction is completed, let it stand for precipitation, and pour out the upper layer solution;

[0027] (3) Wash the oxide precipitates of the above reaction with distilled water for 6 times;

[0028] (4) Dry the above precipitate at 100°C for 1 hour;

[0029] (5) Then heat-treat the above dried precipitate at 200°C for 2 hours, and pulverize to obtain antimony-doped tin dioxide conductive powder. Take the prepared antimony-doped tin dioxide conductive powder in a mold with a diameter of 1.8 cm, and apply a pressure of 10 kPa to keep it for 20 It was molded into a disc with a diameter of 1.8 cm in minutes, and its resistance was measured with a bridge resistance tester, and its resistivity was calculated to...

Embodiment 2

[0031] (1) Weigh 5 grams of analytically pure tin particles and 1 gram of analytically pure antimony powder, place them in a 250 ml Erlenmeyer flask, and add 60 ml of 30% nitric acid;

[0032] (2) Magnetically stir the reaction at room temperature for 48 hours. After the reaction is completed, let it stand for precipitation, and pour out the upper layer solution;

[0033] (3) Wash the oxide precipitates of the above reaction with distilled water for 6 times;

[0034] (4) Dry the above precipitate at 100°C for 1 hour;

[0035] (5) Heat-treat the dry precipitate at 400°C for 2 hours, and pulverize to obtain antimony-doped tin dioxide conductive powder. Take the prepared antimony-doped tin dioxide conductive powder in a mold with a diameter of 1.8 cm, and apply a pressure of 10kPa for 20 minutes. Shaped into a disc with a diameter of 1.8 cm, its resistance was measured with a bridge resistance tester, and its resistivity was calculated to obtain a resistivity of 0.5 Ωcm.

Embodiment 3

[0037] (1) Weigh 5 grams of analytically pure tin particles and 1 gram of analytically pure antimony powder, place them in a 250 ml Erlenmeyer flask, and add 60 ml of 30% nitric acid;

[0038] (2) Magnetically stir the reaction at room temperature for 48 hours. After the reaction is completed, let it stand for precipitation, and pour out the upper layer solution;

[0039] (3) Wash the oxide precipitates of the above reaction with distilled water for 6 times;

[0040] (4) Dry the above precipitate at 100°C for 1 hour;

[0041] (5) Then heat-treat the dried precipitate at 600°C for 1 hour, and pulverize it to obtain antimony-doped tin dioxide conductive powder. Take the prepared antimony-doped tin dioxide conductive powder in a mold with a diameter of 1.8 cm, and apply a pressure of 10 kPa to keep it for 20 It was molded into a disc with a diameter of 1.8 cm in minutes, and its resistance was measured with a bridge resistance tester, and its resistivity was calculated to obtain...

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Abstract

A synthesis method of antimony-doped tin dioxide according to the present invention, the steps are as follows: take a certain amount of metal tin powder and metal antimony powder and place them in a glass reactor, add an appropriate amount of nitric acid, and react with magnetic stirring at room temperature for 20 to 50 hours After the reaction is completed, let it stand for precipitation, pour out the upper layer solution, and then wash the oxide precipitate of the above reaction with distilled water for 4 to 8 times, then dry the above precipitate at 100 ° C for 1 to 2 hours, and then dry the dry precipitate for 200 ~ Heat treatment at 600°C for 1-3 hours, and pulverize to obtain antimony-doped tin dioxide conductive powder. The resistivity of the antimony-doped tin dioxide conductive powder is not greater than 2Ωcm.

Description

technical field [0001] The invention relates to a conductive powder material, in particular to a synthesis method of an antimony-doped tin dioxide conductive powder material. Background technique [0002] Antimony-doped tin dioxide (ATO) is a conductive ceramic material, which has the characteristics of good conductivity, stable chemical properties, good light transmission performance (thin film) and good gas-sensing performance. It is widely used in conductive materials, antistatic Use conductive fillers, conductive transparent glass and gas sensors and other fields. [0003] The existing main methods for synthesizing antimony-doped tin dioxide are: [0004] 1. Mechanical mixing method: Sb-containing compound and SnO-containing 2 Compounds are mixed and ball-milled to obtain antimony-doped tin dioxide powder (CN101468397A) by high-temperature heat treatment at 600-1200°C. [0005] 2. Co-precipitation method: Measured Sb-containing inorganic salts and Sn-containing inorga...

Claims

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Application Information

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IPC IPC(8): C01G19/02
Inventor 黄思玉陈颖韦剑锋蒙冕武
Owner GUANGXI NORMAL UNIV
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