A kind of flexible transparent conductive film and preparation method thereof

A transparent conductive film, flexible technology, applied in cable/conductor manufacturing, conductive layers on insulating carriers, circuits, etc., can solve the problems of graphene damage, low preparation efficiency, uneven film conductivity, etc., and achieve good conductivity uniformity , preparation equipment and methods are simple

Active Publication Date: 2021-01-29
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can prepare ultra-thin and ultra-flexible graphene conductive films with low surface resistance, there are also the following problems. On the one hand, the preparation of graphene by chemical vapor deposition method not only puts forward high requirements for equipment, but also has low preparation efficiency. ; On the other hand, the prepared graphene needs to be transferred to the surface of the substrate, which is not only inefficient, but also easily causes graphene damage during the transfer process, resulting in uneven conduction of the film

Method used

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  • A kind of flexible transparent conductive film and preparation method thereof
  • A kind of flexible transparent conductive film and preparation method thereof
  • A kind of flexible transparent conductive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 1 mg of silver nanowires to 100 ml of absolute ethanol, and disperse evenly by ultrasonication. Take 20 ml of the above-mentioned dispersion solution and filter it to the surface of a polytetrafluoroethylene filter membrane with a diameter of 5 cm, and then dry the filter membrane at room temperature for 2 hours. A uniformly dispersed silver nanowire film is obtained, and the deposition amount of silver nanowire on the film surface is 100mg / m 2 .

[0030] (2) Mix the liquid silicone rubber dihydroxypolydimethylsiloxane and the corresponding crosslinking agent methyltriethoxysilane according to the mass ratio of 100:2, and then rotate the mixture evenly at a speed of 2000rpm Spread it on the surface of tin foil, and then cure the film at 40°C for 24h.

[0031] (3) The side of the sample prepared in (1) with silver nanowires and the side with cured silicone rubber in (2) are closely attached, and the two attached samples are treated under 1MPa pressure for 24h. ...

Embodiment 2

[0039] (1) Add 1 mg of silver nanowires to 100 ml of absolute ethanol, and disperse evenly by ultrasonication. Take 60 ml of the above-mentioned dispersion solution and filter it to the surface of a polytetrafluoroethylene filter membrane with a diameter of 5 cm, and then dry the filter membrane at room temperature for 4 hours. Obtain uniformly dispersed silver nanowire film (silver nanowire deposition amount on film surface is 300mg / m 2 ).

[0040] (2) Mix the liquid silicone rubber dihydroxypolydimethylsiloxane and the corresponding crosslinking agent methyltriethoxysilane according to the mass ratio of 100:6, and then rotate the mixture evenly at a speed of 4000rpm Spread it on the surface of tin foil, and then cure the film at 60°C for 18h.

[0041] (3) The side of the sample prepared in (1) with silver nanowires and the side with cured silicone rubber in (2) are closely bonded, and the two bonded samples are treated under 3MPa pressure for 18h, and then Transfer the sil...

Embodiment 3

[0049] (1) Add 1 mg of silver nanowires to 100 ml of absolute ethanol, and disperse evenly by ultrasonication. The above-mentioned dispersion liquid is vacuum filtered to the surface of a polytetrafluoroethylene filter membrane with a diameter of 5 cm, and then the filter membrane is dried at room temperature for 6 hours to obtain Uniformly dispersed silver nanowire film (silver nanowire deposition on the film surface is 500mg / m 2 ).

[0050](2) Mix the liquid silicone rubber dihydroxypolydimethylsiloxane and the corresponding crosslinking agent methyltriethoxysilane according to the mass ratio of 100:10, and then rotate the mixture evenly at a speed of 6000rpm Spread it on the surface of tin foil, and then cure the film at 80°C for 12h.

[0051] (3) The side of the sample prepared in (1) with the silver nanowires and the side with the cured silicone rubber in (2) are closely bonded, and the two bonded samples are treated for 12 hours under a pressure of 5 MPa. Transfer the ...

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Abstract

The invention discloses a flexible transparent conductive film and a preparation method thereof. The preparation method comprises the steps of adding silver nanowires into absolute ethyl alcohol, dispersing uniformly under ultrasonic assistance, applying the dispersion liquid to the surface of an organic filter membrane by means of vacuum filtration, then drying the filter membrane to obtain a filter membrane A with uniformly dispersed silver nanowires; (2) uniformly mixing liquid silicone rubber and a corresponding cross-linking agent, then uniformly dispersing the mixture on the surface of ametal film by means of spin coating, and then carrying out solidification to obtain a film B; (3) tightly fitting the side having the silver nanowires of the filter membrane A and the side having thesolidified silicone rubber of the film B, carrying out pressure treatment, and transferring the silver nanowires on the filter membrane to the surface of the silicone rubber film; and (4) soaking thesample obtained in the step (3) into a dilute acid solution, and enabling the metal film on the surface of the silicone rubber film to be completely dissolved so as to obtain the flexible transparentconductive film. The ultra-thin flexible transparent conductive film prepared according to the invention has uniform conductivity and good flexibility.

Description

technical field [0001] The invention belongs to the technical field of flexible conductive film materials, and in particular relates to a preparation method of a flexible transparent conductive film. Background technique [0002] With the development of electronic devices and equipment in the direction of mobility, lightness, and bendability, new flexible transparent conductive film materials have been developed rapidly. Compared with traditional hard conductive materials, the new flexible transparent conductive film material not only has excellent optical transparency and low surface resistance of traditional materials, but also can be used in a bent state. Among various flexible transparent conductive film materials, the flexible transparent conductive film based on silver nanowires has become a research hotspot in the past ten years because of its excellent performance and low preparation cost. [0003] Due to the development of flexible electronic skins, ultrathin condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00H01B1/02
Inventor 朱立新吴良辉李要山
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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