Manufacturing method for highly-wear-resistant nanometal transparent conductive film

A technology of transparent conductive film and nano-metal, which is applied in the manufacture of cables/conductors, insulation of conductors/cables, circuits, etc. It can solve problems such as insufficient film hardness, poor film environmental tolerance, scratches or dents, etc. Degree and anti-scratch effect, improved coating process conditions, reduced environmental resistance

Active Publication Date: 2014-08-20
TIANJIN BAOXINGWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Prepare nano conductive metal wires and water-based adhesives into coating inks, coat them on transparent substrates, evaporate the solvent after baking, and leave adhesives to embed nano metal wires in it to form conductive films. After the adhesive forms a thin film, the surface hardness is low, and the film surface hardness of the transparent conductive film will affect the yield rate of its application in products. For example, in the manufacture of touch screens, one of the important factors for the defect rate is the lack of film hardness during the manufacturing process. Scratches or dents; in addition, the environmental tolerance of the film is relatively poor, and it is easily infiltrated by moisture and oxidative gases, resulting in mildew and oxidation of nano-metals, which cannot be applied to the manufacture of electronic products; another defect is that due to water-based After the adhesive is baked, it is not completely flat and has a high and low plane, so after the light is incident, it will produce a large haze. The current solution is to coat a protective layer on the conductive layer, so that the film The surface resistance will increase a lot, at least twice, which does not meet the requirements of low resistance of electronic products

Method used

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  • Manufacturing method for highly-wear-resistant nanometal transparent conductive film

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Embodiment 1

[0015] Flexible substrate selection polyethylene terephthalate (Polyethylene terephthalate, PET)

[0016] The formula of the conductive layer coating solution is: the nano-metal wire is selected as a nano-silver wire, the average wire length should be 20 μm, the average wire diameter should be 35nm, the content of the nano-silver wire is 0.1%, 0.34% polyvinyl alcohol, 0.2% silicon dioxide, 0.5% oxidized polyethylene wax, 0.01% polyethylene glycol octylphenyl ether. The specific preparation method is to take 250g of 0.2% nano silver wire initial suspension, the solvent of this suspension is pure water, add 215g of 0.8% polyvinyl alcohol aqueous solution to it while stirring, and finally add 10g of 10% carbon dioxide Silica hydrosol, 25g of 10% oxidized polyethylene wax hydrosol, and 0.05g of polyethylene glycol octylphenyl ether are fully stirred and then prepared.

[0017] Coat the prepared coating ink onto the substrate by spin coating, then pre-bake it in an oven at 100 deg...

Embodiment 2

[0019] Flexible substrate selection polyethylene terephthalate (Polyethylene terephthalate, PET)

[0020] The formula of the coating solution is: the nano-metal wire is selected as the nano-silver wire, the average wire length should be 20 μm, the average wire diameter should be 35 nm, the content of the nano-silver wire is 0.1%, 0.34% carboxypropyl methylcellulose, 0.2% carbon dioxide Silicone, 0.3% oxidized polyethylene wax, 0.2% polytetrafluoroethylene wax, 0.01% polyethylene glycol octylphenyl ether. The specific preparation method is to get 250g of 0.2% nano-silver wire initial suspension, the solvent of this suspension is pure water, add 0.8% carboxypropyl methylcellulose aqueous solution of 215g to it while stirring, finally add 10g of 10% silicon dioxide hydrosol, 25g of mixed hydrosol of 6% oxidized polyethylene wax and 4% polytetrafluoroethylene wax, and 0.05g of polyethylene glycol octyl phenyl ether are fully stirred and the preparation is completed.

[0021] Coat...

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Abstract

The invention relates to a manufacturing method for a highly-wear-resistant nanometal transparent conductive film. The method is characterized in that the manufacturing steps are as follows: (1) manufacturing a nanometal into an initial suspension liquid; (2) preparing an additive; (3) adding the additive into the nanometal initial suspension liquid so that a coating nanomeal ink is prepared; (4) coating the prepared nanometal ink on a substrate in a spin coating, slit-type coating, slightly concave plate coating or spray coating method and then pre-baking for 5-20 minutes in a dryer at 100 degrees and then putting the substrate into the drying oven to bake for 5-20 minutes at 140 degrees and then a high-hardness and great-compactness conductive layer is obtained; (5) at last, making the substrate with the conductive layer pass a planishing mill so as to obtain a conductive layer which is lower in haze level. A one-step-method coating process is adopted to improve the hardness and the environment tolerance of the film and reduce the haze level of the film.

Description

technical field [0001] The invention relates to improving the formula of nanometer metal coating liquid, in particular to manufacturing a highly wear-resistant nanometer metal conductive film by using a one-step coating method after improving the formula of coating liquid. Background technique [0002] At present, transparent conductive thin substrates mainly include metal oxide substrates, carbon nanotubes or graphene substrates. Nano metal substrates, conductive polymer substrates, among which indium tin oxide (ITO) substrates are the most widely used. The main performance indicators of transparent conductive substrates are conductivity and visible light transparency. Most conductive substrates need to balance the performance between the two. Often, high-conductivity substrates have low transmittance, and high-transmittance substrates have low conductivity. Metal oxide substrates, carbon nanotubes or graphene substrates, and conductive polymer substrates often cannot meet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B13/16
Inventor 魏寅
Owner TIANJIN BAOXINGWEI TECH
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