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Heat-resistant flexible transparent conductive film and preparation method thereof

A transparent conductive film, flexible technology, applied in the direction of conductive coating, cable/conductor manufacturing, conductive layer on the insulating carrier, etc., can solve the complex preparation process of flexible transparent conductive film, poor heat resistance of flexible transparent conductive film, harsh production conditions and other problems, to achieve the effect of short time-consuming, improved electrical conductivity, and good heat resistance

Inactive Publication Date: 2015-03-25
SUZHOU SIDIKE NEW MATERIALS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are mainly two deficiencies as follows: 1) the preparation process of some flexible transparent conductive films at this stage is complicated, the production conditions are harsh, and the equipment investment is too high; 2) the flexible transparent conductive films generally have the disadvantage of poor heat resistance

Method used

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  • Heat-resistant flexible transparent conductive film and preparation method thereof
  • Heat-resistant flexible transparent conductive film and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0020] The preparation method of the heat-resistant flexible conductive film comprises the following steps:

[0021] Step 1): Take silver nitrate, glycerol, ammonium chloride or ammonium fluoride, and polyvinylpyrrolidone by weighing respectively according to the above formula to form a mixed solution;

[0022] Step 2): stirring and heating the obtained mixed solution at 200° C. for 20-30 minutes to obtain a nano-silver wire suspension;

[0023] Step 3): Pass the suspension of silver nanowires through a 400-mesh filter to separate the silver nanowires;

[0024] Step 4): Weigh the oleoresin, leveling agent, dispersant, nano-silver wire, additive powder and an appropriate amount of organic solvent according to the above formula. And they were put into the reaction vessel and stirred for 30min to obtain the coating of the novel heat-resistant flexible transparent conductive film;

[0025] Step 5): uniformly coating the coating on the PET film, and adjusting its thickness to 0.5...

Embodiment 1

[0028] Weigh 10g of silver nitrate, 100g of glycerol, 10g of ammonium chloride, and 20g of polyvinylpyrrolidone to make a mixed solution, and stir and heat the mixed solution at 200°C for 30min. Pass the suspension of the prepared silver nanowires through a 400-mesh filter screen to separate the silver nanowires.

[0029] Weigh 50g oleoresin, 3g leveling agent, 5g dispersant, 6g nano-silver wire, 10g additive powder, 50g ethyl acetate and stir for 30min, then evenly spread on PET film, and adjust its thickness to 0.8μm, at 120 Bake and shape in an oven at ℃ for 5-10 minutes to obtain a heat-resistant flexible transparent conductive film.

[0030] After testing, the prepared film has a surface resistance of 45Ω, a light transmittance of 80%, and a haze of 2.5%. Compared with a film prepared without adding additive powder, its deformation temperature is increased by 25°C through a comparison test.

Embodiment 2

[0032] The preparation of silver nanowires is as in Example 1.

[0033] Weigh 30g oleoresin, 1g leveling agent, 3g dispersant, 3g nano-silver wire, 6g additive powder, 30g toluene and stir for 30min, then evenly coat on the PET film, and adjust its thickness to 0.5μm. Bake and shape in an oven for 5-10 minutes to obtain a heat-resistant flexible transparent conductive film.

[0034] After testing, the surface resistance of the prepared film is 45Ω, the light transmittance is 85%, and the haze is 2.5%. Compared with the film prepared without adding additive powder, its deformation temperature is increased by 25°C through a comparison test.

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Abstract

The invention discloses a heat-resistant flexible transparent conductive film and a preparation method of the film. According to the film, the surface of PET is coated with coating, and then the film is prepared after being dried . According to the formula of the coating, the coating is composed of nanometer silver wires, oleoresin, additive powder, flatting agents and a proper quantity of organic solvents. The nanometer silver wires excellent in electrical conductivity and mixed additives composed of carbon fibers, nanometer limestone powder, nanometer palygorskite powder, nanometer aluminum oxide powder and propyl gallate are adopted for improving the electrical conductivity and the heat resistance of the film. The heat-resistant flexible transparent conductive film is low in cost and raw materials are easy to obtain.

Description

technical field [0001] The invention relates to a film, in particular to a heat-resistant flexible transparent conductive film and a preparation method thereof. Background technique [0002] Originating from the needs of flat panel display production, since Badeker reported the formation of cadmium oxide transparent conductive film by thermal evaporation of cadmium, the research and development of transparent conductive film has been widely valued. In the 1960s, indium tin oxide (ITO) became the main body of transparent conductive films, and then developed metal-based composite conductive films and aluminum-doped zinc oxide (AZO) films. Since the 1990s, with the development of the optoelectronics industry, multi-component Transparent conductive oxide (TCO) materials, conductive polymer films and other transparent conductive materials are applied. [0003] At present, the most widely used transparent conductive film is prepared on hard materials such as glass and ceramics, w...

Claims

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Application Information

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IPC IPC(8): H01B1/16H01B1/22H01B5/14H01B13/00C09D201/00C09D7/12C09D5/24
Inventor 金闯杨晓明曾金栋
Owner SUZHOU SIDIKE NEW MATERIALS SCI & TECH
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