Metal nanowire/carbon nanotube composite transparent conducting film and preparation method thereof

A carbon nanotube composite and metal nanowire technology, which is applied in cable/conductor manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of excessively large gaps in the conductive network, loose bonding of conductive materials, and low sheet resistance, and achieve equipment Simple, low cost, strong effect

Inactive Publication Date: 2015-01-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the currently prepared flexible transparent conductive film, such as the trade-off between light transmittance and square resistance value, too large gaps in the conductive network, and insufficient bonding of conductive materi

Method used

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  • Metal nanowire/carbon nanotube composite transparent conducting film and preparation method thereof
  • Metal nanowire/carbon nanotube composite transparent conducting film and preparation method thereof
  • Metal nanowire/carbon nanotube composite transparent conducting film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Take 0.1g of silver nanowires and 0.01g of carbon nanotubes and mix them in 100mL of absolute ethanol. After ultrasonic dispersion for 20 minutes, a mixed suspension is obtained. The silver nanowires are 70-100nm in diameter and 5-20μm in length. The tubes are 20-40nm in diameter and 2-5μm in length, all purchased from the market without other treatment;

[0036](2) Take 20mL of the suspension to form a uniform film layer on a PET transparent substrate with a thickness of 350 μm and an area of ​​40cm×40cm by transfer method. The surface density of silver nanowires and carbon nanotubes on the flexible transparent substrate is 0.01375mg / cm 2 ;

[0037] (3) Statically press the film layer together with the PET transparent substrate on a tablet press for 10 seconds under a pressure of 15 MPa to obtain an AgNWs / CNTs-PET composite flexible transparent conductive film.

[0038] figure 1 , figure 2 The SEM photographs of the AgNWs / CNTs-PET composite flexible transpare...

Embodiment 2

[0047] (1) Take 0.16g of silver nanowires and 0.04g of carbon nanotubes and mix them in 100mL of absolute ethanol. After ultrasonic dispersion for 30 minutes, a mixed suspension is obtained, in which the silver nanowires are 70-90nm in diameter and 15-30μm in length. The tubes are 20-40nm in diameter and 5-15μm in length, all purchased from the market without other treatment;

[0048] (2) Take 10mL of the suspension to form a uniform film layer on a PET transparent substrate with a thickness of 350 μm and an area of ​​40cm×40cm by transfer printing. The surface density of silver nanowires and carbon nanotubes on the flexible transparent substrate is 0.0125mg / cm 2 ;

[0049] (3) Statically press the film layer together with the PET transparent substrate on a tablet press for 10 seconds under a pressure of 10 MPa to obtain an AgNWs / CNTs-PET composite flexible transparent conductive film.

[0050] Figure 7 It is a scanning electron microscope photo of AgNWs / CNTs-PET composit...

Embodiment 3

[0052] (1) Take 0.04g of silver nanowires and 0.01g of carbon nanotubes and mix them in 100mL of anhydrous acetone. After ultrasonic dispersion for 10 minutes, a mixed suspension is obtained, in which the silver nanowires are 30-50nm in diameter and 5-15μm in length. The tubes are 20-40nm in diameter and 5-10μm in length, all purchased from the market without other treatment;

[0053] (2) Dip a PBT transparent substrate with a thickness of 100 μm and an area of ​​40 cm × 40 cm in the suspension for 3 times to form a uniform film layer. The surface density of silver nanowires and carbon nanotubes on the flexible transparent substrate is 0.01 mg / cm 2 ;

[0054] (3) Statically press the film layer together with the PBT transparent substrate on a tablet press under a pressure of 2 MPa for 10 seconds to obtain an AgNWs / CNTs-PBT composite flexible transparent conductive film.

[0055] The results show that: AgNWs form the main conductive network, CNTs form the branch conductive n...

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Abstract

The invention relates to a metal nanowire/carbon nanotube composite flexible transparent conducting film and a preparation method thereof. The composite flexible transparent conducting film comprises a flexible transparent substrate, wherein the surface of the flexible transparent substrate is coated with a metal nanowire/carbon nanotube composite conducting layer; metal nanowires form a crossing main conducting network; carbon nanotubes form a branched conducting network; and the branched conducting network is located in a gap of the main conducting network, and connected with the main conducting network. The preparation method of the conducting film comprises the steps of mixing the metal nanowires, the carbon nanotubes, absolute ethyl alcohol or acetone to form a suspension, performing spraying, immersing or transfer printing on the flexible transparent substrate to form a uniform film layer, and finally performing pressing. The method requires no dispersing agent, and is simple in technology, low in cost and easy in scale production; the prepared metal nanowire/carbon nanotube composite flexible transparent conducting film is fewer in conducting network gap, high in visible light transmittance and low in square resistance; the visible light transmittance is greater than or equal to 80%; and the square resistance is less than or equal to 90 ohm/sq.

Description

technical field [0001] The invention relates to the technical field of preparation of transparent conductive films, in particular to a metal nanowire / carbon nanotube composite flexible transparent conductive film and a preparation method thereof. Background technique [0002] Transparent conductive film is a functional film with high visible light transmittance and certain conductivity. It has been widely used in the fields of information, new energy, transportation and national defense, such as displays, touch screens, solar cells, electroluminescent devices, and automotive heat-conducting glass. Windows, windows of fighter jets and cruise missiles, and electromagnetic shielding, etc. Flexible transparent conductive film materials are one of the research hotspots in the field of advanced functional materials. [0003] So far, the transparent conductive film with the longest history and the best overall performance is indium tin oxide (ITO) film, which can achieve a square ...

Claims

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Application Information

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IPC IPC(8): H01B5/00H01B1/22H01B13/00B82Y30/00
Inventor 景茂祥沈湘黔李旻陈翠玉
Owner JIANGSU UNIV
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