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SnO2-doped slurry, preparation method and application thereof

A slurry and powder technology, applied in the field of doped SnO2 slurry and its preparation, can solve the problems of poor printing effect, high viscosity of nano slurry, and uneven surface of thick film, and achieve good printing performance

Inactive Publication Date: 2019-06-25
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a doped SnO 2 The slurry and its preparation method and application solve the problems that the existing nano slurry has high viscosity, the surface of the thick film obtained by screen printing is uneven, and the printing effect is poor.

Method used

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  • SnO2-doped slurry, preparation method and application thereof
  • SnO2-doped slurry, preparation method and application thereof
  • SnO2-doped slurry, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Step 1. Weigh 35.91 g of terpineol and 15.39 g of butyl carbitol acetate in a beaker, and stir for 30 min with a magnetic stirrer to obtain a mixed solvent.

[0067] Step 2. Add 0.60g of dibutyl phthalate, 1.20g of dioctyl phthalate and 5.40g of ethyl cellulose to the mixed solvent in step 1. Put it in a water bath and heat it at 80°C. Stir with a stirrer for 2 h to mix to obtain an organic vehicle.

[0068] Step 3: Weigh 31.50g of nano-SnO 2 and 26.54g of palladium dispersion, ball milled for 10h, and the ball milling speed was 400r / min. After ball milling, dry at 60°C for 20 hours, and sieve through a 100-mesh sieve to obtain a mixed powder.

[0069] Step 4: Add the organic vehicle in step 2 to the mixed powder in step 3, and then add 0.315g, 0.473g, 0.630g and 0.7875g (accounting for 1wt%, 1.5wt%, 2wt% and 2.5wt%) tributyl phosphate, grind 35h with the roller mill, the rotating speed of the roller mill is set as 100r / min, obtain doped SnO 2 of slurry.

[0070] S...

Embodiment 2

[0072] Step 1. Weigh 35.91 g of terpineol and 15.39 g of butyl carbitol acetate in a beaker, and stir for 30 min with a magnetic stirrer to obtain a mixed solvent.

[0073] Step 2. Add 0.60g of dibutyl phthalate, 1.20g of dioctyl phthalate and 5.40g of ethyl cellulose to the mixed solvent in step 1. Put it in a water bath and heat it at 80°C. Stir with a stirrer for 2h to mix to obtain an organic vehicle.

[0074] Step three, weigh 31.50g of nano-SnO 2 and 26.54g of palladium dispersion, ball milled for 10h, and the ball milling speed was 400r / min. After ball milling, dry at 60° C. for 20 h, and sieve through a 100-mesh sieve to obtain a mixed solid powder.

[0075] Step 4: Add the organic vehicle in step 2 to the mixed powder in step 3, then add 0.315g, 0.473g and 0.630g (accounting for 1wt%, 1.5wt% and 2wt% of the mixed powder mass respectively) of three Ethanolamine was ground for 35 hours with a roller mill, and the speed of the roller mill was set at 100r / min to obtain...

Embodiment 3

[0078] Step 1. Weigh 35.91 g of terpineol and 15.39 g of butyl carbitol acetate in a beaker, and stir for 30 min with a magnetic stirrer to obtain a mixed solvent.

[0079] Step 2. Add 0.60g of dibutyl phthalate, 1.20g of dioctyl phthalate and 5.40g of ethyl cellulose to the mixed solvent in step 1. Put it in a water bath and heat it at 80°C. Stir with a stirrer for 2h to mix to obtain an organic vehicle.

[0080] Step three, weigh 31.50g of nano-SnO 2 and 26.54g of palladium dispersion, ball milled for 10h, and the ball milling speed was 400r / min. After ball milling, dry at 60°C for 20 hours, and sieve through a 100-mesh sieve to obtain a mixed powder.

[0081] Step 4. Add the organic vehicle described in step 2 to the mixed powder described in step 3, and then add 0.315g, 0.473g, 0.630g, 0.7875g and 0.945g (accounting for 1wt% of the mixed powder mass respectively, 1.5wt%, 2wt%, 2.5wt% and 3wt%) oleic acid, grind 35h with the roller mill, the rotating speed of the roller ...

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Abstract

The invention belongs to the technical field of electronic materials and relates to a SnO2-doped slurry, a preparation method and application thereof. The SnO2-doped slurry comprises SnO2 powder, a binder, a plasticizer, a dispersant, a nano metal and a mixed solvent; the particle size of the SnO2 powder ranges from 20 nm to 100 nm; the mixed solvent contains two or more components selected from butyl carbitol acetate, butyl stearate, terpineol, and triolein. The viscosity of the slurry is suitable; the slurry has a certain rheological property; the viscosity of the slurry decreases as a rotation speed increases, so that the slurry can smoothly pass through a mesh during screen printing, and therefore, the shape of a pattern can be maintained after the printing is finished. The slurry is printed onto a substrate through screen printing, so that a complete and clear pattern can be rendered; and appropriate holes are formed in the surface of a printed thick film, so that more gas under test can be absorbed.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a doped SnO 2 Slurry and its preparation method and application. Background technique [0002] As the use of traditional energy such as oil, coal, and natural gas increases year by year, the amount of waste gas emissions is also increasing, resulting in serious air pollution. In recent years, due to the increasingly prominent problem of environmental pollution, various types of gas sensors have been used to detect NO, NO 2 , CO, CO 2 , NH 3 and other gases to achieve the purpose of controlling the emission of polluting gases. At present, the types of gas sensors are classified into infrared sensor type, solid electrolyte type, capacitive type, surface acoustic wave type, fluorescent chemical sensor and semiconductor oxide type sensor. Among them, semiconductor oxide sensors, especially those doped with noble metals (such as Pt, Pd, Au, etc.), have high sensitivi...

Claims

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Application Information

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IPC IPC(8): G01N27/12G01N27/22B82Y30/00
Inventor 姚英邦毕道广
Owner GUANGDONG UNIV OF TECH
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