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Electric conduction nanometer copper ink preparation method

A technology of conducting nanometer and nanometer copper, applied in the field of nanomaterials, can solve the problems of narrow temperature range, high cost and high cost of reducing agent L-ascorbic acid, and achieve the effects of high reactivity, low cost and high yield

Inactive Publication Date: 2016-04-06
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention patent with the publication number CN103341633A reports a method for preparing conductive ink nano-copper. In this method, copper source and polyethylene glycol are added with reducing agent L-ascorbic acid under the condition of heating and stirring, and then heating and stirring are continued to obtain copper nano-copper. Particles, although the reaction conditions are mild, the temperature range of the reaction is narrow, and it needs to be stirred to obtain uniformly dispersed copper nanoparticles, but the cost of the reducing agent L-ascorbic acid used is high, resulting in high cost of industrial production

Method used

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  • Electric conduction nanometer copper ink preparation method
  • Electric conduction nanometer copper ink preparation method
  • Electric conduction nanometer copper ink preparation method

Examples

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Embodiment 1

[0044] (1) Dissolve 0.05 mol of copper sulfate in 100 ml of distilled water, add dropwise 30 ml of ammonia water with a volume ratio of 1:1 under stirring at room temperature, until the blue precipitate is just completely dissolved, and the solution turns dark blue;

[0045] (2) Slowly add 50ml of 0.1mol sodium hydroxide solution to the above solution to form a blue copper hydroxide precipitate, wash with deionized water and absolute ethanol three times respectively, and then freshly prepared copper hydroxide can be obtained ;

[0046] (3) Add 1.9g of polyvinylpyrrolidone K-30, 0.3g of newly prepared copper hydroxide and 5M~6.6M reducing agent glycerol to 30ml of absolute ethanol in sequence;

[0047] (4) Add the mixed solution into a polytetrafluoroethylene autoclave tank, and react for 20-24 hours at 80-100°C to obtain a nano-copper dispersion;

[0048] (5) Centrifuge the nano-copper dispersion at 8000~10000 rpm for 20~30 minutes, wash it with absolute ethanol for 3 times, ...

Embodiment 2

[0051](1) Dissolve 0.05mol of copper chloride in 100ml of distilled water, and add dropwise 30ml of ammonia water with a volume ratio of 1:1 under normal temperature stirring conditions until the blue precipitate is completely dissolved and the solution turns dark blue.

[0052] (2) Slowly add 50ml of 0.1mol sodium hydroxide solution to the above solution to form a blue copper hydroxide precipitate, wash with deionized water and absolute ethanol three times respectively, and then freshly prepared copper hydroxide can be obtained ;

[0053] (3) Add 12g of polyvinylpyrrolidone K-15, 0.6g of newly prepared copper hydroxide and 3.3M~5M reducing agent glycerol to 30ml of deionized water in sequence;

[0054] (4) Add the mixed solution into a polytetrafluoroethylene autoclave tank, and react for 12-20 hours at 100-150°C to obtain a nano-copper dispersion;

[0055] (5) Centrifuge the nano-copper dispersion at a speed of 10000~12000 rpm for 10~20 minutes, wash it with deionized water...

Embodiment 3

[0058] (1) Dissolve 0.05mol of copper nitrate in 100ml of distilled water, add dropwise 30ml of ammonia water with a volume ratio of 1:1 under stirring at room temperature, until the blue precipitate is completely dissolved and the solution turns dark blue.

[0059] (2) Slowly add 50ml of 0.1mol sodium hydroxide solution to the above solution to form a blue copper hydroxide precipitate, wash with deionized water and absolute ethanol three times respectively, and then freshly prepared copper hydroxide can be obtained ;

[0060] (3) Add 2.2g of polyvinylpyrrolidone K-60, 0.44g of freshly prepared copper hydroxide and 1.7M~3.3M reducing agent glycerol to 30ml of ethylene glycol in sequence;

[0061] (4) Add the mixed solution into a polytetrafluoroethylene autoclave tank, and react for 6-12 hours at 150-200°C to obtain a nano-copper dispersion;

[0062] (5) Centrifuge the nano-copper dispersion at a speed of 12000-15000 rpm for 5-10 minutes, wash it with acetone for 3 times, pla...

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Abstract

The present invention discloses an electric conduction nanometer copper ink preparation method, which comprises: (1) sequentially adding polyvinylpyrrolidone, freshly-prepared copper hydroxide and glycerol to a first solvent to form a mixed solution; (2) adding the mixed solution obtained in the step (1) into a an autoclave, and carrying out a reaction for 2-24 h at a temperature of 80-250 DEG C to obtain a nanometer copper dispersion liquid; (3) carrying out a centrifugation treatment on the nanometer copper dispersion liquid, washing the obtained precipitate by using a second solvent, and carrying out vacuum drying to obtain copper nanoparticles; and (4) dispersing the obtained copper nanoparticles in a third solvent to form the electric conduction nanometer copper ink. According to the present invention, the inexpensive glycerol is adopted as the reducing agent to prepare the electric conduction nanometer copper ink, such that the method has characteristics of simple process, easy operation, safety, no toxicity, green environmental protection, low cost, controlled reaction process, no impurity introducing during the reaction, high yield, and simple and mild reaction conditions, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a preparation method of conductive ink, in particular to a preparation method of conductive nano-copper ink, and belongs to the technical field of nanometer materials. technical background [0002] Metal nanomaterials are the hottest field in material science research today. This is because, compared with bulk materials, nanometer-sized metal particles (such as Au, Ag, Cu, etc.) have the characteristics of small size, large specific surface area, small resistance, quantum size effect, and macroscopic quantum tunneling effect, making them suitable for use in optics. , Mechanics, medicine, electricity, mechanochemistry and other fields have shown good application prospects. As an important class of functional materials, nano-copper has been widely used in industrial production and daily life due to its superior performance, low toxicity, and low price, and has become the focus of preparation and research. [0003] A lot of work...

Claims

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Application Information

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IPC IPC(8): C09D11/52
Inventor 邵霜霜陈征崔铮
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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