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Green and environment-friendly conductive nano-copper ink and preparation method thereof

A green, environmentally friendly, conductive ink technology, applied in nanotechnology, ink, metal processing equipment, etc., to achieve the effects of high repeatability, good process stability, mild and pollution-free reaction process

Pending Publication Date: 2020-08-07
HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are various preparation methods for copper nanoparticles, but there is no report on the rapid preparation of copper nanoparticles by using efficient ultrasonic sonochemical effects. The copper nanoparticles prepared by the method of the present invention have the advantages of simple process, low cost, green Environmental protection, high yield, good oxidation resistance, excellent dispersion, and easy to form large-scale production

Method used

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  • Green and environment-friendly conductive nano-copper ink and preparation method thereof
  • Green and environment-friendly conductive nano-copper ink and preparation method thereof
  • Green and environment-friendly conductive nano-copper ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Weigh 3g of copper hydroxide and add it to 150ml of ethanol solvent and mix evenly, heat to 50°C after continuous stirring, and obtain solution a after completely dissolving; weigh 15g of ascorbic acid as a reducing agent, then weigh 2g of polyvinylpyrrolidone ( K-20) as a protective agent, mix the two evenly, add to 150ml ethanol to dissolve, continue stirring and heat to 50°C, and obtain solution b after complete dissolution.

[0049] (2) Place solution b in a pulsed ultrasonic device that applies a direct downward action. The preset ultrasonic parameters: power 1000W, frequency 20KHz, pulse ratio 3:1, after heating to 50°C, pour solution a quickly React in solution b for 10 min, and after the solution changes from light blue to dark red, a copper nanoparticle solution is obtained.

[0050] (3) Cool the copper nanoparticle solution obtained in step (2) to room temperature, and centrifuge and wash with 4000r / min deionized water for 4 times to obtain pure copper nan...

Embodiment 2

[0054] (1) Weigh 5g of copper acetate and add it to 100ml of ethanol solvent, mix evenly, heat to 100°C after continuous stirring, and obtain solution a after completely dissolving; weigh 10g of sodium borohydride as a reducing agent, and then weigh 2g of polyvinylpyrrolidone (K-20) as a protective agent, mix the two evenly, add to 100ml of ethanol to dissolve, continue to stir and heat to 100°C, and obtain solution b after complete dissolution.

[0055] (2) Place solution b in a pulsed ultrasonic device that acts directly downward. The pre-set ultrasonic parameters are: power 1200W, frequency 35KHz, pulse ratio 4:1. After heating to 100°C, quickly pour solution a React in solution b for 10 min, and after the solution changes from light blue to dark red, a copper nanoparticle solution is obtained.

[0056] (3) Cool the copper nanoparticle solution obtained in step (2) to room temperature, and centrifuge and wash with 4000r / min deionized water for 4 times to obtain pure copper ...

Embodiment 3

[0059] (1) Weigh 10g copper sulfate and add it to 100ml ethanol solvent and mix evenly, heat to 80°C after continuous stirring, and obtain solution a after completely dissolving; weigh 20g ascorbic acid as reducing agent, then weigh 5g polyvinylpyrrolidone (K -30) As a protective agent, the two are mixed evenly and then dissolved in 100ml of ethanol, heated to 80°C after continuous stirring, and solution b is obtained after complete dissolution.

[0060] (2) Place solution b in a pulsed ultrasonic device that acts directly downward. The pre-set ultrasonic parameters are: power 1500W, frequency 40KHz, pulse ratio 5:1. After heating to 80°C, pour solution a quickly React in solution b for 10 min, and after the solution changes from light blue to dark red, a copper nanoparticle solution is obtained.

[0061] (3) Cool the copper nanoparticle solution obtained in step (2) to room temperature, and centrifuge and wash with 4000r / min deionized water for 4 times to obtain pure copper n...

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Abstract

The invention discloses green and environment-friendly conductive nano-copper ink and a preparation method thereof. The preparation method utilizes cavitation and acoustic flow effects of high-energyultrasonic waves in a liquid phase to change a chemical reaction mechanism so as to efficiently obtain nano-copper particles, and the preparation method specifically comprises the following steps thatfirstly, using ascorbic acid as a reducing agent, taking copper hydroxide as a copper source, then using the dispersion effect of dehydroascorbic acid which is a product generated after ascorbic acidreaction, combining a special effect of a ultrasonic wave in the liquid phase, and therefore efficiently synthesizing a required copper nanoparticle solution; and then, separating and obtaining purecopper nanoparticles from the copper nanoparticle dispersion liquid, after repeatedly washing, adding various organic solvents, and mixing to obtain the nano-copper conductive ink. The preparation method has the advantages of unique reaction mechanism, novel preparation means, simple process, low cost, high yield efficiency, environmental friendliness, easiness in large-scale production and the like, and has a wide application prospect in the field of printed electronics.

Description

Technical field: [0001] The invention belongs to the preparation technology of conductive ink, and in particular relates to a green and environment-friendly conductive nano-copper ink and a preparation method thereof, which are widely used in the processing and manufacturing of components in printed electronics. Background technique: [0002] Printed electronics refers to the process of forming conductive lines and patterns on a substrate, or forming an entire printed circuit board, using fast, efficient and flexible digital printing technology. Compared with traditional micro-nano processing, the biggest feature of printed electronics is that it does not depend on the conductor or semiconductor properties of the substrate material, and can be deposited on any material in the form of a thin film. In addition, printed electronics also has inherent advantages such as flexibility, large area, low cost, and environmental protection. Since the 21st century, people have carried o...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00C09D11/52B82Y40/00
CPCB22F9/24C09D11/52B82Y40/00B22F1/054
Inventor 计红军张文武修子进马秋晨曹依琛潘浩张琳李明雨
Owner HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
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