Preparation method of transparent conductive film

A transparent conductive and adhesive film technology, which is applied in the direction of conductive adhesives, chemical instruments and methods, film/sheet adhesives, etc., can solve problems such as expensive equipment, poor bending resistance of films, and complicated processes, and achieve Low surface resistivity, simple film forming process, and high visible light transmittance

Inactive Publication Date: 2013-03-27
海泰纳鑫科技(成都)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problems of expensive equipment, complex process and poor bending resistance of the obtained film in the current transparent conductive film.

Method used

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  • Preparation method of transparent conductive film

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Effect test

Embodiment 1

[0012] (1) Take 1mL of 0.05mol / L ethanol solution of silver nanowires, drop the above solution on the surface of the transparent PET film at room temperature, and then use a 200μm scraping rod to scrape a 200μm ethanol solution film layer of nanosilver wires on the surface of the PET film ;

[0013] (2) Dry the ethanol solution thin film layer of 200 μm silver nanowires in step (1) at 60°C for 10 minutes to completely volatilize the ethanol;

[0014] (3) Cover the surface of the volatilized PET film obtained in step (2) with a layer of oiled paper, then transfer the film to a flat hot press at 190°C, and perform hot pressing treatment under a pressure of 5 MPa. The time is controlled as 60s, then take it out, let it cool down naturally, remove the oil-faced paper, and the conductive network of silver nanowires is all embedded in the surface of the PET film, so as to obtain the transparent conductive adhesive film.

Embodiment 2

[0016] (1) Take 1mL of 0.25mol / L ethanol solution of silver nanowires, drop the above solution on the surface of transparent PET film at room temperature, and then use a 200μm scraping rod to scrape a 200μm ethanol solution film layer of nanosilver wires on the surface of PET film ;

[0017] (2) Dry the ethanol solution thin film layer of 200 μm silver nanowires in step (1) at 60°C for 10 minutes to completely volatilize the ethanol;

[0018] (3) The surface of the volatilized PET film obtained in step (2) is covered with a layer of oiled paper, and then the film is transferred to a flat-plate hot press at 200°C, and hot-pressed at a pressure of 10 MPa, and the time is controlled as 180s, then take it out, let it cool down naturally, take off the oil-faced paper, and the conductive network of silver nanowires is all embedded in the PET film surface, and promptly obtains described transparent conductive adhesive film.

Embodiment 3

[0020] (1) Take 1mL of 0.5mol / L ethanol solution of silver nanowires, drop the above solution on the surface of transparent PET film at room temperature, and then use a 200μm film scraping rod to scrape a 200μm ethanol solution film layer of nano silver wires on the surface of PET film ;

[0021] (2) Dry the ethanol solution thin film layer of 200 μm silver nanowires in step (1) at 60°C for 10 minutes to completely volatilize the ethanol;

[0022] (3) The surface of the volatilized PET film obtained in step (2) is covered with a layer of oiled paper, and then the film is transferred to a flat-plate hot press at 210°C, and heat-pressed at a pressure of 15 MPa. The time is controlled as 300s, then take it out, let it cool down naturally, remove the oil-faced paper, and the conductive network of silver nanowires is all embedded in the surface of the PET film to obtain the transparent conductive adhesive film.

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Abstract

The invention relates to a preparation method of a transparent conductive film, wherein the method comprises the following steps of: uniformly dispersing an ethanol solution of a silver nano-wire on the surface of a transparent polyethylene terephthalate (PET) thin film; drying for 10minutes at 60 DEG C until the ethanol is completely volatilized; coating a layer of oil-face paper on the surface of the PET thin film; transferring the thin film onto a flat hot press; and heating, pressurizing, forming a film and cooling to obtain the transparent conductive film. The preparation method of the transparent conductive film disclosed by the invention is simple in process, low in cost of the adopted equipment, and high in light transmittance and excellent in bending resistance of the prepared film.

Description

technical field [0001] The invention relates to the field of preparation of conductive adhesive films, in particular to a method for preparing conductive films based on embossing and flexible transparent substrates. Background technique [0002] The transparent conductive adhesive film has good conductivity and high transparency in the visible light wave band, and is widely used in flat panel displays, thin-film solar cells, sensors, touch screens, and stretchable electronics. The traditional preparation methods of transparent conductive films can be generally divided into two categories: sputtering method and metal grid method. The sputtering method is to sputter indium tin oxide (ITO) directly on the glass substrate, or sputter on the polyester (PET) film and then compound it on the glass substrate. The metal grid method can be divided into copper foil etching method, metal fiber weaving method, printing method and silver salt method. Although sputtering and copper foil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J9/02B32B37/06B32B37/10
Inventor 陶宇吴海平苏中淮陶瑜骁王标兵
Owner 海泰纳鑫科技(成都)有限公司
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