Industrial production method of copper nanoparticle

A nano-copper and particle technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of poor stability of nano-copper particles, complex process, high input cost, and achieve promotion and promotion. Popularity, simple process steps and low input cost

Active Publication Date: 2012-04-11
西安坤德新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an industrial production method of nano-copper particles in view of the deficiencies in the above-mentioned prior art, which has simple process steps, short production process, easy operation and l...

Method used

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  • Industrial production method of copper nanoparticle
  • Industrial production method of copper nanoparticle
  • Industrial production method of copper nanoparticle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In the present embodiment, when producing nano-copper particle, comprise the following steps:

[0046] Step 1. Precursor selection: select 12.5 g of copper oxide with a mass purity above 98% as the precursor.

[0047] In actual processing, copper hydroxide or copper acetate can also be used as the precursor.

[0048] Step 2. Pretreatment of the precursor: adding the copper compound and additives selected in Step 1 into absolute ethanol (mass fraction ≥ 99.7%) for dissolution, and uniformly stirring to prepare an ethanol mixed solution.

[0049] In this embodiment, the additive is a surface coating agent, and the surface coating agent is a hydrophilic coating agent, and polyvinylpyrrolidone is selected as the hydrophilic coating agent. In actual use, first use a graduated cylinder to measure 100ml of absolute ethanol, and add 12.5g of copper oxide weighed in advance to 100ml of absolute ethanol for dissolution, and at the same time weigh 2g of polyvinylpyrrolidone (PVP)...

Embodiment 2

[0067] In this example, the difference from Example 1 is that polyether-modified silicone oil is selected as the hydrophilic coating agent in Step 2, and the rest of the production steps and process parameters are the same as in Example 1.

[0068] In this embodiment, polyether modified silicone oil is used as a surface coating agent to obtain copper particles with an average particle size of about 99nm. The particle size test results of the obtained copper particles are as follows: Figure 6 shown.

Embodiment 3

[0070] In this example, the difference from Example 1 is that polyacrylic acid resin is selected as the hydrophilic coating agent in step 2, and the rest of the production steps and process parameters are the same as in Example 1.

[0071] In this embodiment, polyacrylic acid resin is used as the surface coating agent to obtain copper particles with an average particle size of about 81nm. The particle size test results of the obtained copper particles are as follows: Figure 6 shown.

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Abstract

The invention discloses an industrial production method of a copper nanoparticle. The industrial production method comprises the following steps of: firstly, selecting a precursor: selecting a copper compound with the purity of over 98 percent as the precursor; secondly, pretreating the precursor: adding the copper compound selected in the first step and an additive into absolute ethyl alcohol for dissolving and uniformly stirring to obtain an ethanol mixed solution, wherein the additive is a surface coating agent and/or a surfactant; thirdly, adding a reducing agent: adding the reducing agent into the ethanol mixed solution and obtaining a mixed solution in which the reducing agent is added, wherein the reducing agent is hydrazine hydrate; fourthly, carrying out reducing treatment; and fifthly, carrying out subsequent treatment. The invention has the advantages of simple process steps, short production flow, simpleness and convenience for operation and low input cost; the produced copper nanoparticle has high quality; and the actual problems of complex process flow, high input cost and poorer stability of the produced copper nanoparticle and the like in a traditional production method of the copper nanoparticle can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of production and preparation of nano-copper conductive particles, and in particular relates to an industrial production method of nano-copper particles. Background technique [0002] Since metal nanoparticles mixed with resin can be used as conductive ink or conductive paint, attempts have been made in conductive materials, catalysts and sensors. Among them, the reduced particles of precious metals such as gold, silver, platinum, and copper can be used as conductive materials in the connection of electronic components, wiring, and display devices. Indispensable raw materials in the production of labels, etc. [0003] In the manufacture of microcircuits by circuit board printing, ink jet printing and other technologies, conductive ink or conductive ink containing silver or copper particles is currently used. From the perspective of raw material cost and short-circuit defects caused by electromigration of s...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00B82Y30/00
Inventor 孟昭王莉
Owner 西安坤德新型材料有限公司
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