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A kind of preparation method of nano silver wire

A nano-silver wire and solution technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem that the brittleness of indium tin oxide is difficult to meet the requirements of flexible optoelectronic devices, and the price of indium tin oxide is high , high processing costs and other issues, to achieve the effects of inhibiting lengthening and thickening, increasing yield, and increasing reaction speed

Active Publication Date: 2022-07-15
SHENZHEN HUAKE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, indium tin oxide is the most important material for making ITO conductive glass, but due to the relatively small distribution of indium in the earth's crust and high processing costs, the price of indium tin oxide is relatively high, and at the same time, the inherent brittleness of indium tin oxide It is also difficult to meet the requirements for the use of flexible optoelectronic devices

Method used

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  • A kind of preparation method of nano silver wire
  • A kind of preparation method of nano silver wire
  • A kind of preparation method of nano silver wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of nano silver wire, comprising the steps:

[0029] (1) by weight, take by weighing 665g polyvinylpyrrolidone, 1250g potassium nitrate and 1.25g potassium chloride and join in 40L ethylene glycol, and continue to heat and stir, dissolve completely to obtain solution A;

[0030] (2) take by weighing 256g silver nitrate and add it in 800mL ethylene glycol, stir to dissolve completely, obtain solution B;

[0031] (3) continue to stir and heat the solution A, drop the solution B into the solution A, and continue to stir the reaction until the end of the reaction;

[0032] (4) rapidly cool the reaction solution of step (3) to room temperature in 10min, add acetone to the reaction solution, continue stirring, and precipitate out;

[0033] (5) Separating and washing the precipitate to obtain silver nanowires.

[0034] Further, the molecular weight of the polyvinylpyrrolidone is 360000.

[0035] Further, in step (1), the heating temperature is 120° C., a...

Embodiment 2

[0042] A preparation method of nano silver wire, comprising the steps:

[0043] (1) by weight, take by weighing 600g polyvinylpyrrolidone, 500g potassium nitrate and 1.25g potassium chloride and join in 30L ethylene glycol, and continue to heat and stir, dissolve completely to obtain solution A;

[0044] (2) take by weighing 200g silver nitrate and add it in 800mL ethylene glycol, stir to dissolve completely, obtain solution B;

[0045] (3) continue to stir and heat the solution A, drop the solution B into the solution A, and continue to stir the reaction until the end of the reaction;

[0046] (4) rapidly cool the reaction solution of step (3) to room temperature in 10min, add acetone to the reaction solution, continue stirring, and precipitate out;

[0047] (5) Separating and washing the precipitate to obtain silver nanowires.

[0048] Further, the molecular weight of the polyvinylpyrrolidone is 360000.

[0049] Further, in step (1), the heating temperature is 120° C., an...

Embodiment 3

[0056] A preparation method of nano silver wire, comprising the steps:

[0057] (1) by weight, take by weighing 700g polyvinylpyrrolidone, 2500g potassium nitrate and 1.25g potassium chloride and join in 40L of ethylene glycol, and continue to heat and stir, dissolve completely to obtain solution A;

[0058] (2) take by weighing 300g silver nitrate and add in 1000mL ethylene glycol, stir to dissolve completely, obtain solution B;

[0059] (3) continue to stir and heat the solution A, drop the solution B into the solution A, and continue to stir the reaction until the end of the reaction;

[0060] (4) rapidly cool the reaction solution of step (3) to room temperature in 10min, add acetone to the reaction solution, continue stirring, and precipitate out;

[0061] (5) Separating and washing the precipitate to obtain silver nanowires.

[0062] Further, the molecular weight of the polyvinylpyrrolidone is 360000.

[0063] Further, in step (1), the heating temperature is 120° C., an...

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Abstract

The invention relates to the field of nanomaterial preparation, in particular to a method for preparing nanosilver wires, comprising the following steps: (1) weighing 600-700 parts of polyvinylpyrrolidone, potassium nitrate and 1-2 parts of potassium chloride by weight Add in 30000-40000 parts of ethylene glycol, the mol ratio of the potassium nitrate to the potassium chloride is 400-2000:1, and continue to heat and stir to dissolve completely to obtain solution A; (2) take 200-300 Parts of silver nitrate are added to 800-1000 parts of ethylene glycol, stirred until completely dissolved, to obtain solution B; (3) continue to stir and heat the solution A, drop the solution B into the solution A, and continue to stir (4) cooling the reaction solution in step (3) to room temperature, adding acetone to the reaction solution, and continuing to stir to precipitate a precipitate; (5) separating and cleaning the precipitate to obtain silver nanowires. By adding potassium nitrate to adjust the ratio of potassium chloride and potassium nitrate, the formation rate of nano-silver wires is accelerated, the generation of nano-silver particles is reduced, and the aspect ratio of nano-silver wires is increased.

Description

technical field [0001] The invention relates to the field of nanometer material preparation, in particular to a preparation method of nanometer silver wire. Background technique [0002] As a kind of nanomaterials, silver nanowires have been used in the fields of electronics industry, antibacterial materials, organic catalysis, energy saving and environmental protection due to their excellent electrical, thermal, optical, antibacterial and catalytic functions. [0003] At present, indium tin oxide is the most important material for making ITO conductive glass, but due to the relatively small distribution of indium in the earth's crust and the high processing cost, the price of indium tin oxide is relatively high, and the inherent brittleness of indium tin oxide It is also difficult to meet the use requirements of flexible optoelectronic devices. The silver nanowires have excellent light transmittance, flexural resistance, electrical conductivity and other characteristics, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/054B82Y30/00B82Y40/00
CPCB22F9/24B82Y40/00B82Y30/00B22F1/0547
Inventor 庄桂生林仪珊潘莹莹李晓明
Owner SHENZHEN HUAKE COMM TECH CO LTD