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Preparation method of pure silver nanowire

A silver nanowire, pure technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as limited application, difficult removal of silver nanowires, affecting the conductivity of silver nanowire networks, etc. , to achieve the effect of good conductivity and light transmittance

Active Publication Date: 2020-11-13
西安宏星电子浆料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that PVP will be coated on the surface of the prepared silver nanowires, which is extremely difficult to remove, and the residual PVP will seriously affect the conductivity of the silver nanowire network, which greatly limits its application in the field of optoelectronics.

Method used

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  • Preparation method of pure silver nanowire
  • Preparation method of pure silver nanowire
  • Preparation method of pure silver nanowire

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Weigh 0.68g of silver nitrate (sieved through 20-100 mesh) and dissolve it in 10ml of anhydrous ethylene glycol, the concentration of silver nitrate is 0.4mol / L, weigh polydiene dimethyl ammonium chloride solution, its molecular weight It is 100000-200000, make polydiene dimethyl ammonium chloride quality be 0.16g, add anhydrous ethylene glycol and make total volume be 10ml, polydiene dimethyl ammonium chloride concentration is 0.1mol / L, in reaction Add 5ml ethylene glycol solution of polydiene dimethyl ammonium chloride to the container, drop 5ml ethylene glycol solution of silver nitrate prepared while stirring, the dropping speed is 2ml / min, magnetically stir the mixed solution at room temperature (Magnetic stirring speed is 500rpm) After 10min, put it into an oil bath pre-heated to 200°C, react under static conditions for 6h, take out the product and cool it at room temperature, and centrifuge at 15000rpm for 5min, then wash it once with acetone, deionize After wash...

Embodiment 2

[0029] Weigh 0.068g of silver nitrate (sieved through 20-100 mesh) and dissolve it in 10ml of anhydrous ethylene glycol, the concentration of silver nitrate is 0.4mol / L, weigh polydiene dimethyl ammonium chloride solution, its molecular weight It is 200000-350000, make polydiene dimethyl ammonium chloride quality be 0.128g, add anhydrous ethylene glycol and make total volume be 10ml, polydiene dimethyl ammonium chloride concentration is 0.08mol / L, in reaction Add 5ml of ethylene glycol solution of polydiene dimethyl ammonium chloride to the container, and dropwise add 5ml of prepared silver nitrate solution in ethylene glycol at a rate of 1ml / min while stirring, and magnetically dissolve the mixed solution at room temperature Stir (the speed of magnetic stirring is 350rpm) for 15min, put it into an oil bath pre-heated to 180°C, react for 8h under static conditions, take out the product and cool it at room temperature, and centrifuge at 10000rpm for 10min, then wash it with acet...

Embodiment 3

[0031] Weigh 0.068g of silver nitrate (sieved through 20-100 mesh) and dissolve it in 10ml of anhydrous ethylene glycol, and dissolve and prepare it by ultrasonic. The ultrasonic time is 3-5min, the ultrasonic frequency is 40KHz, and the concentration of silver nitrate is 0.4mol / L; Take polydiene dimethyl ammonium chloride solution, its molecular weight is 350000-500000, make polydiene dimethyl ammonium chloride quality be 0.08g, add anhydrous ethylene glycol and make total volume be 10ml, The concentration of polydiene dimethyl ammonium chloride is 0.05mol / L, mixed by magnetic stirring, and the stirring speed is 100-500rpm; 5ml of ethylene glycol solution of polydiene dimethyl ammonium chloride is added in the reaction vessel, While stirring, add 5ml of prepared silver nitrate ethylene glycol solution dropwise at a rate of 3ml / min. Stir the mixed solution magnetically at room temperature (the speed of magnetic stirring is 600rpm) for 20min and then put it into a pre-heated to...

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Abstract

The invention relates to a preparation method of a pure silver nanowire and belongs to the field of preparation of silver nanomaterials. The preparation method comprises the following steps of preparing a solution A (an ethylene glycol solution of polydiene dimethyl ammonium chloride) and a solution B (an ethylene glycol solution of silver nitrate), wherein the concentration of the solution A is 0.05-0.1 mol / L and the concentration of the solution B is 0.4 mol / L; then dropwise adding the isometric solution B into the solution A under magnetic stirring to stir the mixed solution for 10-20 min at room temperature magnetically, then heating the mixed solution to 160-200 DEG C and carrying out a reaction for 6-10 hours to obtain a product; separating the product which is cooled at room temperature by a centrifugal machine, and dispersing the centrifugalized product in ethanol after being washed; and preparing a silver nanowire by using a novel covered agent polydiene dimethyl ammonium chloride and washing the silver nanowire to remove a protecting agent covering the surface of the silver nanowire so as to prepare the pure silver nanowire. Therefore, better electrical conductivity and light transmittance are achieved.

Description

technical field [0001] The invention belongs to the field of preparation of silver nanomaterials, and in particular relates to a preparation method of pure silver nanowires. [0002] technical background [0003] Highly conductive transparent electrodes have important applications in many optoelectronic devices. Such as touch screen, liquid crystal display (LCD), light emitting diode (LED), organic light emitting diode (OLED), etc., these technologies have shown rapid growth in the past few years. Indium tin oxide (ITO), currently the most widely used material in this field, may not meet the requirements of next-generation flexible optoelectronic display devices due to its brittleness. In recent years, metallic nanowires, especially transparent conductive networks based on silver nanowires (AgNWs) have played an important role. Silver nanowires are the most potential important materials in the next generation of flexible display devices. [0004] At present, many preparati...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00B82Y30/00
CPCB22F9/24B82Y40/00B82Y30/00B22F1/0547
Inventor 焦凯郝武昌刘振国王大林卢睿涵张海南吴高鹏
Owner 西安宏星电子浆料科技股份有限公司
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