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A core-shell encapsulation preparation method of silver nanowire composite transparent conductive film

A technology of transparent conductive films and silver nanowires, which is applied in cable/conductor manufacturing, metal/alloy conductors, circuits, etc., can solve problems such as unsatisfactory comprehensive applicability in industrial production, affecting apparent performance, and rainbow pattern phenomenon, etc., to achieve Improved thermal stability and adhesion, good electrical conductivity, and easy handling

Active Publication Date: 2021-09-14
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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  • A core-shell encapsulation preparation method of silver nanowire composite transparent conductive film
  • A core-shell encapsulation preparation method of silver nanowire composite transparent conductive film
  • A core-shell encapsulation preparation method of silver nanowire composite transparent conductive film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

[0030]

[0031]

Embodiment 2

[0033] First, add 10mL of 0.278mol / L 2-methylimidazole into 500mL of 0.18mg / mL silver nanowires, mix well, and then coat;

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

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

[0036]

Embodiment 3

[0038] First, add 10mL of 0.278mol / L 2-methylimidazole into 500mL of 0.18mg / mL silver nanowires, mix well, and then coat;

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

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

[0041]

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Abstract

The invention discloses a preparation method for core-shell encapsulation of a silver nanowire composite transparent conductive film, which belongs to the technical field of nanomaterials and flexible photoelectric films. The method is mainly by adding 2-methylimidazole to the silver nanowire dispersion (Ag NWS), mixing evenly and coating to form a film, and then coating the Zn(NO3)2·6H2O solution on the surface of the film, and passing the Self-assembly forms a crystal material on the surface of silver nanowires, which uses transition metal Zn as the connection point and 2-methylimidazole as the organic ligand, referred to as ZOF. No polymer resin is used in the whole process and formula, so the nano-silver wire fully exhibits conductivity; the obtained transparent conductive film realizes node "welding" due to the deposition of ZOF at the node of the silver nano-wire, and its conductive performance At the same time, due to the core-shell structure formed by the deposition of ZOF on the surface of silver nanowires, its chemical resistance, thermal stability and adhesion have been greatly improved.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a preparation method for core-shell encapsulation 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, as an important material to replace ITO (indium tin oxide), have received extensive attention and a lot of research. Among them, the optical properties and electrical conductivity are the focus of research. At present, the photoelectric properties of silver nanowire transparent conductive films have reached a certain stage. For enterprises, their photoelectric properties should not only meet the basic industrial applications, but also pay more attention to their economical advantages. Applicability, ease of production, and other properties that match industrial...

Claims

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Application Information

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Patent Type & Authority Patents(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