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Core-shell packaging preparation method of silver nanowire composite transparent conductive film

A technology of transparent conductive film and silver nanowire, which is applied in the direction of metal/alloy conductor, cable/conductor manufacturing, circuit, etc., can solve the problems of unsatisfactory comprehensive applicability in industrial production, affecting the appearance performance, rainbow pattern phenomenon, etc., to achieve Improved thermal stability and adhesion, good electrical conductivity, and easy handling

Active Publication Date: 2020-07-17
浙江星岳电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Solve the problem that the transparent conductive film of silver nanowires coated with OC inevitably covers part of the silver nanowires, resulting in a decrease in conductivity; at the same time, it will bring rainbow patterns, which greatly affects its appearance properties. In addition, coating OC requires More production processes and high costs, and a large amount of organic solvents in OC will also pollute the environment when they volatilize, which is not ideal for the comprehensive applicability of industrial production. A core of silver nanowire composite transparent conductive film is provided. Shell encapsulation preparation method

Method used

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  • Core-shell packaging preparation method of silver nanowire composite transparent conductive film
  • Core-shell packaging preparation method of silver nanowire composite transparent conductive film
  • Core-shell packaging preparation method of silver nanowire composite transparent conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, add 10 mL of 0.139 mol / L 2-methylimidazole to 500 mL of 0.16 mg / mL silver nanowires, mix them evenly, and coat them;

[0028] Then 10mL 0.078mol / L Zn(NO3)2·6H2O was coated on the surface, and the Ag@ZOF film was obtained after natural drying, which was characterized by SEM and TEM, and finally tested its adhesion (GB / T 9286) and electrical conductivity (Four-probe instrument), chemical resistance (ethanol, toluene, pH=3 nitric acid solution, wipe 100 times with a 1kg alcohol swab each), thermal stability (120°C, 240 hours). The test results are shown in the table below.

[0029] Table 1 Comparison of conductivity, adhesion and chemical resistance before and after core-shell packaging

[0030]

[0031]

Embodiment 2

[0033] First, add 10 mL of 0.278 mol / L 2-methylimidazole to 500 mL of 0.18 mg / mL silver nanowires, and then coat them after mixing.

[0034] Then 10mL 0.112mol / L Zn(NO3)2·6H2O was coated on the surface, and the Ag@ZIF-8 film was obtained after natural drying, which was characterized by SEM and TEM, and finally tested for its adhesion (GB / T 9286), Conductivity (four-probe instrument), chemical resistance (ethanol, toluene, pH=3 nitric acid solution, wipe 100 times with a 1kg alcohol swab each), thermal stability (120°C, 240 hours). The test results are shown in the table below.

[0035] Table 2 Comparison of conductivity, adhesion and chemical resistance before and after core-shell packaging treatment

[0036]

Embodiment 3

[0038] First, add 10 mL of 0.278 mol / L 2-methylimidazole to 500 mL of 0.18 mg / mL silver nanowires, and then coat them after mixing.

[0039] Then 10mL 0.556mol / L Zn(NO3)2·6H2O was coated on the surface, and the Ag@ZIF-8 film was obtained after natural drying, which was characterized by SEM and TEM, and finally tested its adhesion (GB / T 9286), Conductivity (four-probe instrument), chemical resistance (ethanol, toluene, pH=3 nitric acid solution, wipe 100 times with a 1kg alcohol swab each), thermal stability (120°C, 240 hours). The test results are shown in the table below.

[0040] Table 3 Comparison of conductivity, adhesion and chemical resistance before and after core-shell packaging treatment

[0041]

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Abstract

The invention discloses a core-shell packaging preparation method of a silver nanowire composite transparent conductive film, and belongs to the technical field of nano materials and flexible photoelectric films. The method mainly comprises the following steps of adding 2-methylimidazole into a silver nanowire dispersion liquid (Ag NWS); uniformly mixing, then coating to form the film, and then coating the surface of the film with a Zn (NO3) 2.6 H2O solution, naturally air-drying, and assembling to form a crystal material (ZOF for short) taking transition metal Zn as a connecting point and 2-methylimidazole as an organic ligand on the surface of the silver nanowire. No polymer resin is used in the whole process and formula, so that the silver nanowire fully shows the conductivity. According to the obtained transparent conductive film, due to the deposition of ZOF at silver nanowire nodes, the node welding is achieved, and the conductivity of the transparent conductive film is improved.Meanwhile, the ZOF is deposited on the outer surface of the silver nanowire to form a core-shell structure, so that the chemical resistance, the thermal stability and the adhesive force of the core-shell structure are greatly improved.

Description

Technical field [0001] The invention relates to the technical field of nano materials, in particular to a core-shell packaging preparation method of a silver nanowire composite transparent conductive film. Background technique [0002] As one of the core components of 3C electronic devices, transparent conductive films have extremely important applications in the touch field. In recent years, silver nanowires have received extensive attention and a lot of research as an important material to replace ITO (Indium Tin Oxide). Among them, optical properties and electrical conductivity are the focus of research. At present, the research on the optoelectronic properties of silver nanowire transparent conductive films has reached a certain stage. For enterprises, their optoelectronic properties are not only satisfying basic industrial applications, but also are more economical. Applicability, ease of production, and other performance matching industrial applications. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B1/02
CPCH01B1/02H01B13/00
Inventor 戚芬强黄江波顾宏伟
Owner 浙江星岳电子科技有限公司