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Nano-silver inkjet conductive ink subjected to low-temperature post-treatment and stabilization, and preparation method

A conductive ink and nano-silver technology, used in inks, household appliances, applications, etc., can solve the problems of increasing the temperature of ink post-processing, and achieve the effect of simplifying the post-processing process, overcoming the low stability and improving the dispersion stability.

Inactive Publication Date: 2012-06-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it will significantly increase the post-processing temperature of the ink

Method used

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  • Nano-silver inkjet conductive ink subjected to low-temperature post-treatment and stabilization, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Preparation of nano-silver particles coated with organic protective agent on the surface

[0020] Dissolve 4.175g of silver acetate in 40 mL of toluene, heat up to 60°C and add 10.175g of dodecylamine under stirring, and add 0.0506g of dodecylmercaptan to the system after 5 minutes; Add 11.35g of 12% phenylhydrazine toluene solution to the system; stir at 60°C for 60min, then cool down to below 40°C, add 10mL of acetone and stir for 15min, then add 100mL of a mixture of acetone and methanol in equal volume , continue to stir for 15 minutes, and filter; the filter cake is repeatedly washed with acetone, and dried naturally, which is nano-silver particles coated with dodecylamine and dodecylmercaptan on the surface, and the particle size is 5nm.

[0021] Second, the modulation of nano-silver conductive ink

[0022] Add 0.5 g of silver nanoparticles coated with dodecylamine and dodecylmercaptan on the surface prepared in step 1 into a mixed solution of 1 mL of cyclohex...

Embodiment 2

[0024] 1. Preparation of nano-silver particles coated with organic protective agent on the surface

[0025] Dissolve 4.175g of silver acetate in 40 mL of toluene, heat up to 60°C and add 12.425g of tetradecylamine under stirring, and add 0.0506g of dodecyl mercaptan to the system after 5 minutes; Add 8.59g of 12% phenylhydrazine toluene solution to the system; stir and react at a constant temperature of 60°C for 90min, then cool down to below 40°C, add 10mL of acetone and stir for 30min, then add 100mL of a mixture of acetone and methanol in equal volume , continue to stir for 30 minutes, and filter; the filter cake is repeatedly washed with acetone, and dried naturally, which is nano-silver particles coated with dodecyl mercaptan and tetradecylamine, and the particle size is 5nm.

[0026] Second, the modulation of nano-silver conductive ink

[0027] Add 1.0 g of silver nanoparticles coated with dodecylmercaptan and tetradecylamine on the surface prepared in step 1 into a mix...

Embodiment 3

[0029] 1. Preparation of nano-silver particles coated with organic protective agent on the surface

[0030] Dissolve 4.175g of silver acetate in 40 mL of toluene, heat up to 60°C and add 10.175g of dodecylamine while stirring, add 0.0753g of hexanethiol to the system after 5 minutes; continue to add to the system after 5 minutes 15.68g of phenylhydrazine toluene solution with a concentration of 8% by mass; Stir and react at a constant temperature of 60°C for 90min, then cool down to below 40°C, add 10mL of acetone and stir for 15min, then add 100mL of a mixture of acetone and methanol in equal volume, and continue stirring After 15 minutes, filter; the filter cake was repeatedly washed with acetone, and dried naturally, which was nano-silver particles coated with hexanethiol and dodecylamine on the surface, with a particle size of 5 nm.

[0031] Second, the modulation of nano-silver conductive ink

[0032] Add 1mL cyclohexane, the mixed solution of 0.5mL n-dodecane and 0....

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Abstract

The invention discloses an inkjet nano-silver conductive ink and a preparation method of the ink. The inkjet nano-silver conductive ink comprises the following components by mass percent (the sum of mass percent of all components is 100%): 5-45% of silver nanoparticle, on the surface of which organic protecting agent with the particle diameter being smaller than 10nm is coated, and 55-95% of ink solvent. The preparation method comprises two steps, including preparation of the silver nanoparticle, on the surface of which organic protecting agent is coated, by taking silver acetate as raw material, and the preparation of nano-silver conductive ink. The method takes a small amount of alkyl hydrosulfide with strong effect on nano-silver and a large amount of alkylamine with weak effect on nano-silver as protecting agent to prepare the silver nanoparticle, so that the inkjet nano-silver conductive ink has the characteristics of high nano-silver concentration, low post-treatment temperatureand good dispersion stabilization, and is particularly suitable for being printed on flexible substrate.

Description

technical field [0001] The invention relates to a low-temperature post-treatment and stable nano-silver ink-jet conductive ink and a preparation method, belonging to the technology of electronic printing materials. Background technique [0002] "Printed electronics" is a production method that prepares various conductive circuits and electronic components by printing. It closely combines printing and packaging technology with high value-added electronics industry technology. It plays a role in application performance, improving product quality, and increasing market share of new products. At present, printed electronics has combined various printing technologies including inkjet printing, offset printing, gravure printing, electrostatic printing and screen printing. Based on thin film electronics, through the research and application of various functional thin film electronic materials, making Printed electronics find applications in areas including thin-film transistor cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02C09D11/52
Inventor 周雪琴刘东志李巍吴美兰
Owner TIANJIN UNIV
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