Monodisperse nano copper particles used for conductive printing ink and preparation method and purposes thereof

A nano-copper and particle technology, which is applied in the fields of nanotechnology, ink, and nanotechnology for materials and surface science, can solve problems such as being unsuitable for large-scale production, small product particles, and cumbersome post-processing processes.

Active Publication Date: 2020-10-27
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction temperature of the sol-gel method is low, the product particles are small, the particle size distribution is narrow and the purity is high, but the cost is high and it is accompanied by pollution; the particles obtained by the hydrothermal reduction method are high in purity, the particle size distribution is narrow, and the crystal lattice growth is complete and pollution-free. However, the ratio and purity of raw materials are high, and it is not suitable for large-scale production; the preparation process of the electrolysis method is relatively simple, but the post-treatment process is relatively cumbersome; the reaction temperature of the plasma meth

Method used

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  • Monodisperse nano copper particles used for conductive printing ink and preparation method and purposes thereof
  • Monodisperse nano copper particles used for conductive printing ink and preparation method and purposes thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 2.0g of PVP-k30 into 200ml of ethanol, stir mechanically, then add 6.0g of L-ascorbic acid, stir evenly, add copper hydroxide aqueous solution, which contains 0.98g of copper hydroxide, heat to 80°C, and wait until the color of the solution starts to change Reheat for 1 hour, cool to room temperature after the reaction is completed, centrifuge and wash 4 times with 8000r / min absolute ethanol, take the precipitate and dry it at room temperature for 10 hours under the condition that the vacuum degree is less than 0.01MPa, and obtain conductive ink nano-copper;

[0038] Get the above-mentioned obtained nano-copper, and use a field-scanning electron microscope (SEM) to observe the morphology of the particles, the results are as follows figure 1 As shown, the particle size of the nano-copper is 50-80nm, the particle dispersion is good, and there is no obvious agglomeration phenomenon.

Embodiment 2

[0040] Add 1.0g PVP-k30 into 200ml ethanol, stir mechanically, then add 6.0g L-ascorbic acid, stir well, add copper hydroxide aqueous solution, which contains 0.98g copper hydroxide, heat to 80°C, wait until the color of the solution starts to change Reheat for 1 hour, cool to room temperature after the reaction is completed, centrifuge and wash 4 times with 8000r / min absolute ethanol, take the precipitate and dry it at room temperature for 10 hours under the condition that the vacuum degree is less than 0.01MPa, and obtain conductive ink nano-copper;

[0041] Take the nano-copper obtained above, and use a field scanning electron microscope (SEM) to observe the morphology of the particles. The particle size of the nano-copper is 60-70nm.

Embodiment 3

[0043]Add 0.5g of PVP-k30 to 200ml of ethanol, stir mechanically, then add 6.0g of L-ascorbic acid, stir evenly, add copper hydroxide aqueous solution, which contains 0.98g of copper hydroxide, heat to 80°C, and wait for the color of the solution to change Reheat for 1 hour, cool to room temperature after the reaction is completed, centrifuge and wash 4 times with 8000r / min absolute ethanol, take the precipitate and dry it at room temperature for 10 hours under the condition that the vacuum degree is less than 0.01MPa, and obtain conductive ink nano-copper;

[0044] Take the nano-copper obtained above, and use a field emission scanning electron microscope (SEM) to observe the morphology of the particles. The particle size of the nano-copper is 80-100 nm.

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Abstract

The invention relates to a preparation method of nano copper particles. The preparation method comprises the following steps that (1) a protective agent is evenly dispersed into an alcoholic solutionor an aqueous solution of alcohol, then a reducing agent is added, and the solution is stirred evenly; (2) copper precursor is added into the solution obtained in the step (1), the solution is stirredevenly and heated to 70 DEG C, and then the solution is heated for one hour or longer when the color of the solution starts to change; and (3) washing is conducted after the reaction is finished, drying is conducted after sediment is taken out, and the nano copper particles are obtained. In the preparation process, composite chelating agents do not need to be added, middle processes including separation and purification, or activation and sensitization are not needed, and reaction conditions are mild. In addition, the nano copper particles generated through the preparation method are small inparticle size, good in dispersity, high in monodispersity, and great in oxidization resistance, and can be put into mass production and applied to the field of conductive printing ink.

Description

technical field [0001] The invention belongs to the field of metal nanomaterials, and in particular relates to a preparation method of nano copper particles, in particular to a preparation method and application of nano copper particles used in conductive ink. Background technique [0002] Nowadays, with the rapid development of electronic technology, the requirements for the performance of electronic components and equipment are getting higher and higher; as an electronic material with good mechanical and conductive properties and wide application fields, conductive ink is favored by more and more people. [0003] Conductive ink is a new type of functional composite material. A large number of conductive particles in the ink system are evenly dispersed to form a slurry (including solvent) in an insulating state. After the conductive ink is sintered and solidified, it realizes the conductive function under the action of an external electric field. Conductive ink is mainly c...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/24B82Y30/00B82Y40/00C09D11/52
CPCB22F9/24B82Y40/00B82Y30/00C09D11/52B22F1/054
Inventor 范吉磊李刚朱朋莉赵涛孙蓉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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