Silver nanowire conductive film and preparation method thereof

A technology of silver nanowires and conductive films, which is applied to equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc., can solve problems such as unsatisfactory water and oxygen barrier effects, and achieve Good wetting, high hardness, good barrier effect of water and oxygen

Active Publication Date: 2020-01-21
深圳市善柔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a silver nanowire conductive film and its preparation method, aiming to solve the technical problem that the water and oxygen barrier effect of the organic polymer protective layer of the existing silver nanowire conductive film is not ideal

Method used

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  • Silver nanowire conductive film and preparation method thereof
  • Silver nanowire conductive film and preparation method thereof
  • Silver nanowire conductive film and preparation method thereof

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preparation example Construction

[0018] On the one hand, the embodiment of the present invention provides a kind of preparation method of silver nanowire conductive thin film, such as figure 1 Shown, this preparation method comprises the steps:

[0019] S01: Provide the substrate;

[0020] S02: coating the silver nanowire ink on the substrate, and then performing drying treatment to obtain an initial silver nanowire film;

[0021] S03: Coating a polysilazane solution on the surface of the initial silver nanowire film, and then curing to obtain a silver nanowire conductive film.

[0022] The preparation method of the silver nanowire conductive film provided by the embodiment of the present invention, after the silver nanowire ink is made into the initial silver nanowire film on the substrate, the polysilazane solution is coated on the surface of the initial silver nanowire film and solidified to form a polysilazane solution. Silazane cured layer; polysilazane matches the surface polarity of silver simple sub...

Embodiment 1

[0042] A preparation method of a silver nanowire transparent conductive film, comprising the steps of:

[0043] Preparation of polysilazane solution: the mass fraction of polysilazane resin is 1%, the mass fraction of surface leveling agent Glide-432 is 0.02%, the mass fraction of surface wetting agent DISPERBYK-168 is 0.03%, and the balance is butyl acetate and ethylene glycol dimethyl ether mixture (mass ratio 1:1). In the structural formula of polysilazane resin, R 1 and R 2 Both are H, and the molecular weight is 1000.

[0044] Coat silver nanowire ink on a flexible transparent substrate, place it in an oven at 100°C for 20 minutes, and dry it into a silver nanowire film; then coat the above-mentioned polysilazane solution on the surface of the silver nanowire film, and place it at a temperature of 20 ℃, and a relative humidity of 95% in an oven for 10 hours to obtain a silver nanowire transparent conductive film.

Embodiment 2

[0046] A preparation method of a silver nanowire transparent conductive film, comprising the steps of:

[0047] Preparation of polysilazane solution: the mass fraction of polysilazane resin is 10%, the mass fraction of surface leveling agent Glide-432 is 0.5%, the mass fraction of surface wetting agent DISPERBYK-168 is 0.5%, and the balance is n-hexane, A mixture of n-pentane (mass ratio 1:1). In the structural formula of polysilazane resin, R 1 for H, R 2 for CH 3 , the molecular weight is 2200.

[0048] Coat silver nanowire ink on a flexible transparent substrate, place it in an oven at 100°C for 20 minutes, and dry it into a silver nanowire film; then coat the above-mentioned polysilazane solution on the surface of the silver nanowire film, and place it at a temperature of ℃, and the relative humidity is 60% in an oven for curing for 30 minutes to obtain a silver nanowire transparent conductive film.

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Abstract

The invention belongs to the technical field of nano materials, and particularly relates to a silver nanowire conductive film and a preparation method thereof. The preparation method of the silver nanowire conductive film comprises the following steps: providing a substrate; coating the substrate with silver nanowire ink, and drying the silver nanowire ink to obtain an initial silver nanowire film; and coating the surface of the initial silver nanowire film with a polysilazane solution, and curing the solution to obtain a silver nanowire conductive film. The polysilazane cured layer formed bycuring the polysilazane solution is used as a protective layer and has high transparency, high hardness, good dielectric property and excellent water-oxygen barrier property, so that the weather resistance of the silver nanowire conductive film is improved.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a silver nanowire conductive film and a preparation method thereof. Background technique [0002] Silver Nanowires (AgNWs) generally refer to one-dimensional silver metal materials whose length is in the micrometer scale and the diameter is in the nanometer scale. The transparent conductive film made of silver nanowires has the advantages of good transparency, low square resistance, and bendability, and can be applied in the fields of large-scale touch and flexible touch. The specific surface area of ​​silver nanowires is large, and it is easy to react with water vapor, oxygen and sulfide in the air to form Ag 2 O and Ag 2 S and other non-conductive metal compounds make the silver nanowire transparent conductive film lose its conductivity. At present, the common practice in the industry is to coat a layer of organic polymer coating on the dried silver n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B5/14C09D183/16
CPCC09D183/16H01B5/14H01B13/0026
Inventor 李奇琳王新月甘堃陈超云
Owner 深圳市善柔科技有限公司
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