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Method for preparing nano copper conductive ink

A conductive ink and nano-copper technology, which is applied to conductive materials, inks, household appliances, etc. dispersed in non-conductive inorganic materials, can solve the problems of complex preparation process, high heating temperature, and long preparation period, and achieve particle dispersibility. Good, good dispersion, low production cost effect

Active Publication Date: 2010-11-10
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a high heating temperature and requires electrodialysis and vacuum distillation operations, so the preparation process is complicated and the preparation cycle is long.

Method used

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  • Method for preparing nano copper conductive ink
  • Method for preparing nano copper conductive ink
  • Method for preparing nano copper conductive ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 10 mmol CuCl 2 .2H 2 O and 2.6 grams of polyvinylpyrrolidone (PVP) were dissolved in 50 milliliters of deionized water respectively, mixed and stirred, and the temperature was raised to 80° C., and an amount of ammonia was added to adjust its pH value to 10; 5 milliliters of 50% hydrazine hydrate solution was slowly added dropwise, and Stir for 60 minutes and cool to room temperature to obtain a nano-copper dispersion; centrifuge the obtained copper dispersion at a speed of 8000 rpm for 15 minutes, wash twice with deionized water and absolute ethanol, and then vacuum at room temperature Dry for 2 hours to obtain nano-copper particles; weigh 0.4 g of nano-copper particles, dissolve in 0.6 g of diethylene glycol monobutyl ether, and obtain nano-copper conductive ink with a solid content of 40% after ultrasonication for 15 minutes.

[0029] The nano-copper conductive ink obtained above is sampled, and the copper particles in the nano-copper conductive ink are observed usi...

Embodiment 2

[0031] 10 mmol CuSO 4 5H 2O and 1.62 grams of polyacrylamide were respectively dissolved in 50 milliliters of ethylene glycol and 50 milliliters of deionized water, mixed and stirred, heated to 80 ° C, and an appropriate amount of ammonia water was added to adjust its pH value to 9; 5 milliliters of 50% hydrazine hydrate solution was slowly added dropwise , continuously stirred for 30 minutes, cooled to room temperature to obtain a nano-copper dispersion; the obtained copper dispersion was centrifuged at a speed of 8000 rpm for 15 minutes, washed twice with deionized water and absolute ethanol, and then heated at room temperature Dry under vacuum for 2 hours to obtain nano-copper particles; weigh 0.2 g of nano-copper particles, dissolve in 0.8 g of ethylene glycol butyl ether, and obtain nano-copper conductive ink with a solid content of 20% after ultrasonication for 15 minutes.

[0032] The TEM figure, SEM figure and XRD figure of this nano copper conductive ink are similar ...

Embodiment 3

[0034] 10 mmol CuCl 2 .2H 2 O and 2.6 grams of polyvinylpyrrolidone (PVP) were respectively dissolved in 50 milliliters of diethylene glycol, mixed and stirred, heated to 30 ° C, and an appropriate amount of ammonia was added to adjust its pH to 7; slowly dropwise added 5 milliliters of 50% hydrated Hydrazine solution, continuously stirred for 60 minutes, cooled to room temperature to obtain a nano-copper dispersion; the obtained copper dispersion was centrifuged at a speed of 8000 rpm for 20 minutes, washed twice with deionized water and absolute ethanol, and then Vacuum-dry at room temperature for 3 hours to obtain nano-copper particles; weigh 0.3 g of nano-copper particles and dissolve in 0.7 g of diethylene glycol monobutyl ether, and obtain nano-copper conductive ink with a solid content of 30% after ultrasonication for 15 minutes.

[0035] The TEM figure, SEM figure and XRD figure of this nano copper conductive ink are similar to those in Example 1 figure 1 , figure ...

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Abstract

The invention discloses a method for preparing nano copper conductive ink, which can be applied in the field of printing electronic technology, in particular ink jet printing technology. The preparation method comprises the following steps of: dissolving copper salt and protective agent into a solvent, heating and stirring the solution, adding a small amount of alkali solution to adjust the pH ofthe solution to between 7 and 10, dripping a reducing agent into the solution, continuously stirring the solution to react for 30 to 60 minutes, and then cooling the reaction solution to room temperature to obtain nano copper dispersion; performing centrifuging, washing and vacuum drying at room temperature on the nano copper dispersion to obtain nano copper granules; and dispersing the nano copper granules into an organic solvent, and ultrasonically treating the solution to obtain the nano copper conductive ink. The method solves the problems of complex preparation process and long preparation period in the prior art, has the advantages of simple and convenient operation, low production cost, short flow and no harmful waste generation, and realizes the goals of environmental protection and economy; and the prepared nano copper conductive ink has good dispersion property and high stability.

Description

technical field [0001] The invention relates to the technical field of conductive ink in printed electronic technology, in particular to a preparation method of nano copper conductive ink. Background technique [0002] At present, a new type of manufacturing technology is emerging in Europe, America, Japan, South Korea, Taiwan and other places - printed electronics or printed electronic circuit technology, also known as additive method. This revolutionary new technology uses various printing processes to directly print functional inks into circuits or devices on insulating substrates. It is a flexible, fast, convenient, environmentally friendly and energy-saving manufacturing technology. Now the research on this technology is mainly focused on the printing technology and the materials used for printing, that is, the research of functional ink. [0003] Inkjet printing is a widely used and mature printing technology in daily life. At present, printed electronics technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02H01B1/22C09D11/52
Inventor 乌学东熊敬
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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