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Coating material and prepn. thereof

A kind of coating film and nanotechnology, which is applied in the field of industrial antimony tin oxide conductive paste and its preparation, can solve the problems of easy cracking of the film, high cost, and large consumption of organic alcohol, etc., and achieve the effect of expanding the scope of application

Inactive Publication Date: 2006-09-20
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the sol-gel method, because the sol contains a large amount of water, the film is easy to crack during heat treatment; in the spray pyrolysis method, a large amount of harmful impurity ions such as Cl in the precursor are directly formed on the surface. - It is difficult to remove, and the hydrolysis method of alcohol salt needs to consume a large amount of organic alcohol, which is very expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: tin chloride 18.5g, antimony chloride 4.0g, zinc chloride 2.0g, rare earth element compound cerium chloride 0.04g, it is completely dissolved in the hydrochloric acid solution 300ml of 1M, adds dispersant triton X- 1001.5ml, heat to keep the temperature at 60°C, stir, add ammonia water dropwise to adjust the pH value to 2.5-5.0, a precipitate is formed, filter the precipitate and wash it with deionized water, and check that there is no Cl in the washing residue - Then carry out azeotropic distillation, the solvent is n-butanol, and then wash with ethanol, the purpose is to take away free water, dry the obtained sol in a nitrogen protective atmosphere for 12 hours, the temperature is 90 ° C, and then grind the powder at 650 ° C Calcined for 2 hours, nano-ATO powder can be obtained, take 6.5g of nano-ATO powder, add it to ethanol, cut it at a speed of 5000rpm for 6 hours, add anti-agglomeration agent silane coupling agent KH560 and hexadecyl trimethyl bromide...

Embodiment 2

[0029] Embodiment 2: tin chloride 32.5g, antimony chloride 5.8g, zinc chloride 1.2g, rare earth element compound samarium chloride 0.06g, it is completely dissolved in the hydrochloric acid solution 400ml of 1M, adds dispersant β-alanine Acid 2.2g, heating and keeping the temperature at 60°C, stirring, adding ammonia water dropwise to adjust the pH value to 2.0-6.0, forming a precipitate, filtering the precipitate and washing it with deionized water, and checking that there is no Cl in the washing residue - Then carry out azeotropic distillation, the solvent is n-butanol, and then wash with ethanol, the purpose is to take away free water, dry the obtained sol in a nitrogen protective atmosphere for 10 hours, the temperature is 85 ° C, and then grind the powder at 700 ° C Calcined for 2 hours, nano-ATO powder can be obtained, take 11.0g of nano-ATO powder, add it to ethanol, cut it at a speed of 6000rpm for 5 hours, add anti-agglomeration agent silane coupling agent KH792 and ti...

Embodiment 3

[0030] Embodiment 3: tin chloride 24.7g, antimony chloride 4.3g, zinc chloride 2.5g, rare earth element compound neodymium chloride 0.08g, it is completely dissolved in the hydrochloric acid solution of 1M, adds dispersant polyacrylamide 0.5g , heating to keep the temperature at 65°C, stirring, adding ammonia water dropwise to adjust the pH value to between 2.0 and 5.0, forming a precipitate, filtering out the precipitate and washing it with deionized water, and checking that there is no Cl in the washing residue - Carry out azeotropic distillation again, choose methanol as the solvent, and then wash with ethanol, the purpose is to take away free water, dry the obtained sol in a nitrogen protective atmosphere for 9 hours, the temperature is 95°C, and then grind the powder and calcinate at 650°C for 2 hours , to obtain nano-ATO powder, take 13g of nano-ATO powder and add it to ethanol, after shearing at a rate of 7000rpm for 6h, add 2ml each of anti-agglomeration agent vinyltrie...

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Abstract

This invention discloses a stannic oxide / antimony oxide coating nanomaterial, which comprises stannic oxide 70-90 wt.%, antimony oxide 0.5-20 wt.%, zinc oxide 0.5-18 wt.% and rare earth compounds 0.001-1 wt.%. The coating nanomaterial is manufactured by dissolving the raw materials, adding ammonia solution for hydrolysis, filtering, performing azeotropic distillation, washing with alcohol, drying, sintering, shearing and ultrasonically dispersing. This invention utilizes controllable precipitation method to manufacture ATO monodispersed powders, and applies the slurry of the powders to the matrix, which is then subjected to thermal treatment at lower than 300 deg.C to form films. The coating nanomaterial has adjustable light transmittance and electric conductivity according to different requirements, thus is suitable for large-area coating.

Description

technical field [0001] The invention belongs to the technical field of coating films, and relates to an industrial antimony tin oxide (ATO) conductive paste and a preparation method thereof. Background technique [0002] ATO is a kind of SnO 2 An n-type semiconductor material that is conductively doped with antimony in a wide bandgap semiconductor. The material is transparent in the visible light wavelength range, and a proper amount of doping Sb can form donor carriers in the material. Its film resistivity can reach the order of 10-3. In addition to high light transmittance and electrical conductivity, the material also has a wide range of applications in high temperature and good chemistry in corrosive media. Such as color picture tubes, computer monitors, electrical casings, lithium-ion battery electrodes, solar photoelectric conversion, electrochromic display screens, etc. [0003] So far, the industrial methods for preparing ATO thin films include: sol-gel method, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/24
Inventor 段学臣李历历
Owner CENT SOUTH UNIV
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