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Preparation method for nano-copper ink applied to printed electronics

A nano-copper and conductive ink technology, applied in ink, printing, application and other directions, can solve the problems of high heating temperature, easy agglomeration of copper, complicated process, etc., and achieve the effect of low sintering temperature, good conductivity and simple process

Active Publication Date: 2012-07-11
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 200910054884.8 discloses a preparation method of nano-copper conductive ink: it selects different reducing agents, precursors, stabilizers and solvents, and prepares nano-copper ink through electrodialysis for impurity removal and vacuum distillation. The invention process is complex , and after impurity removal by electrodialysis and vacuum distillation, copper is easy to agglomerate or even oxidize, thus affecting its application; Chinese patent 200810201967.0 uses sodium hypophosphite as reducing agent, copper sulfate as precursor, and uses LD, PVP as surface active The nano-copper conductive ink was prepared at 120-160°C by using the liquid phase reduction method. This method has a high heating temperature, and a variety of metal salts are added, and there are also complex impurity removal processes.

Method used

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  • Preparation method for nano-copper ink applied to printed electronics
  • Preparation method for nano-copper ink applied to printed electronics
  • Preparation method for nano-copper ink applied to printed electronics

Examples

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Effect test

Embodiment 1

[0020] Example 1: Dissolve 0.01mol of copper acetate in 30ml of water, add 2ml of lactic acid, stir to dissolve, continue to stir for 20 minutes, then add ammonia water, the solution turns from blue to dark blue purple, continue to stir for 60 minutes, then add 10ml of hydration drop by drop Hydrazine, the solution gradually turns dark red, indicating that nano-copper is generated, and it is ready for use after continuous stirring and reaction for 25 minutes.

Embodiment 2

[0021] Example 2: Dissolve 0.01mol of copper acetate in a mixed solution of 15ml of water and 15ml of ethanol, add 2ml of lactic acid, stir to dissolve, continue to stir for 25 minutes, then add ammonia water, the solution turns from blue to deep blue purple, continue to stir for 50 minutes , and then add 10ml of hydrazine hydrate dropwise, the solution gradually turns dark red, indicating that nano-copper is formed, and the reaction is continued for 35 minutes after stirring.

Embodiment 3

[0022] Embodiment 3: Dissolve 0.01mol copper acetate in 30ml water, add 2ml ethanolamine, after stirring for 20 minutes, add ammonia water, the solution changes from blue to dark blue purple, continue stirring for 55 minutes, then add 10ml hydrazine hydrate dropwise, the solution gradually becomes It turns dark red, indicating that nano-copper is generated, and it is ready for use after continuous stirring and reaction for 30 minutes.

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Abstract

The invention belongs to the technical field of printed electronics and particularly discloses a preparation method for nano-copper ink applied to printed electronics. In the preparation method for the nano-copper ink applied to the printed electronics, under the action of ammoniand a reducing agent, the stable nano-copper ink applied to the printed electronics is obtained by dissolving an organic copper salt and an organic protective agent into a solvent. The preparation method is simple in process, free of heating and low in cost; water is taken as the solvent, so that the preparation method is more environment-friendly; the particle size of the prepared nano copper is less than 30nm; and the prepared nano copper is easily sintered into a film, is good in conductivity and has a wide application prospect in the field of printed electronic circuits.

Description

technical field [0001] The invention belongs to the technical field of printed electronics, and in particular relates to a preparation method of nano-copper ink suitable for printed electronics. Background technique [0002] In recent years, printed electronics technology has attracted great attention in the application of radio frequency identification tags, wearable electronics, organic light-emitting diodes and organic solar materials. The traditional printed circuit industry uses photolithography, involving processes such as etching, metal deposition and electroplating, accompanied by the generation of a large amount of toxic chemical waste. Therefore, the inkjet printing technology of directly making circuits on the substrate has received extensive attention. Inkjet printing uses a low-viscosity liquid-phase material ink, which is printed through a nozzle and dried to form a conductive layer. For conductive inks, metallic nano-inks are the most promising because they c...

Claims

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Application Information

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IPC IPC(8): C09D11/02B22F9/24B41J2/01H05K3/12C09D11/52
Inventor 邓吨英肖斐
Owner FUDAN UNIV
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