Method for preparing nano-silver particle and nano-silver wire mixed conductive ink

A technology of nano-silver particles and nano-silver wires, applied in the field of nano-materials or printed electronics, can solve problems such as holes, and achieve the effects of ensuring electrical conductivity, reducing production costs, and reducing silver content

Inactive Publication Date: 2013-04-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the sintering process of conductive ink with spherical nano-silver particles, defects such as holes are often caused due to the agglomeration of nanoparticles

Method used

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  • Method for preparing nano-silver particle and nano-silver wire mixed conductive ink
  • Method for preparing nano-silver particle and nano-silver wire mixed conductive ink
  • Method for preparing nano-silver particle and nano-silver wire mixed conductive ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Dissolve 1 g of silver nitrate and 1 g of surfactant polyvinylpyrrolidone k30 in 100 g of deionized water, and stir until a colorless and transparent solution; then add 16 mL of sodium borohydride aqueous solution with a concentration of 10 mg / mL into the above solution, and the whole The reaction process was vigorously stirred under a magnetic stirrer, and the reaction lasted for 25 minutes; after the reaction, the reaction product was centrifuged at a centrifugal rate of 1000 rpm for 20 minutes; the centrifuged product was dried in a nitrogen atmosphere at 50°C for 5 hours to obtain silver nanoparticles. pass figure 1 It can be seen that the prepared nano-silver particles are mainly spherical, the particle size distribution is uniform, and the average particle size is about 40nm.

[0026] (2) Dissolve 1.2g of silver nitrate and 1.05g of surfactant polyvinylpyrrolidone 360 ​​in 130g of ethylene glycol, and stir until completely dissolved; heat the reaction system t...

Embodiment 2

[0029] (1) Dissolve 1g of silver acetate and 0.8g of surfactant polyacrylic acid (PAA) in 120g of deionized water, and stir until a colorless and transparent solution; then add 20mL of sodium borohydride aqueous solution with a concentration of 10mg / mL to the above solution , the entire reaction process was vigorously stirred under a magnetic stirrer, and the reaction lasted for 20 minutes; after the reaction, the reaction product was centrifuged at a centrifugal rate of 800 rpm for 30 minutes; the centrifuged product was dried in a nitrogen atmosphere at 50°C for 5 hours to obtain silver nanoparticles .

[0030] (2) Dissolve 1g of silver nitrate and 0.8g of surfactant polyvinylpyrrolidone 360 ​​in 120g of ethylene glycol, stir until completely dissolved; then add 15g of -3 mol / L potassium chloride solution in ethylene glycol; heat the reaction system to 150°C and stir gently, the reaction time is 2h; after the reaction, filter the reaction product through slow quantitative fi...

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Abstract

The invention discloses a method for preparing nano-silver particle and nano-silver wire mixed conductive ink. In the method, nano-silver particles and nano-silver wires are uniformly dispersed in a solvent. In the prepared nano-silver mixed conductive ink, the mass percentage of the nano-silver particles is 6-10 percent of the total mass of the conductive ink, and the mass percentage of the nano-silver wires is 2-5 percent of the total mass of the conductive ink. The solvent is a mixed solution which comprises the components by volume percentage of 40-50 percent of ethanol, 50-60 percent of ethylene glycol and 5-10 percent of glycerin. The mixed conductive ink has low content of silver, low cost and high electrical conductivity and is specially suitable for printing ways such as intaglio printing, letterpress printing and the like.

Description

technical field [0001] The invention belongs to the technical field of nano-materials or printed electronics, and in particular relates to a method for preparing conductive ink mixed with nano-silver particles and nano-silver wires. Background technique [0002] The development of printed electronic materials has promoted the formation, development and progress of related special industries. The development of microelectronics technology puts forward higher requirements for the production of printed electronic materials. At present, many research institutions and enterprises at home and abroad have paid great attention to the thin film printed electronics industry. Driven by countries such as the United States, Japan, Germany, and South Korea, research and development of conductive inks compatible with printing methods such as inkjet printing, stencil printing, gravure printing, and letterpress printing have emerged internationally. Conductive ink, which belongs to thin fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24C09D11/02C09D11/52
Inventor 荆洪阳曹菊勇韩永典徐连勇杨高阳
Owner TIANJIN UNIV
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