Manufacturing method for nanometal transparent conductive film

A transparent conductive film and nano-metal technology, applied in the manufacture of cables/conductors, insulation of conductors/cables, circuits, etc., can solve the problems of insufficient film hardness, poor environmental tolerance of films, and inability to apply to electronic product manufacturing, etc. Effect of hardness and environmental resistance reduction

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 nanometal transparent conductive film

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Experimental program
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Effect test

Embodiment 1

[0023] The formula of the conductive layer coating solution is: the nano-metal wire is selected as a nano-silver wire, the wire length should be 20 μm, the wire diameter should be 35 nm, the content of the nano-silver wire is 0.1%, 0.2% polyvinyl alcohol, 0.02% nano-spherical silica, The particle size is 10nm, 0.01% of γ-glycidyl etheroxypropyltrimethoxysilane, 0.02% of polyethylene glycol octylphenyl ether, and 0.4% of PEDOT:PSS. 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 237.85g of 0.4% polyvinyl alcohol aqueous solution to it while stirring, and finally add 10g of 1% silver wire respectively Silicon oxide hydrosol, 0.05g of γ-glycidyl etheroxypropyltrimethoxysilane, 0.1g of polyethylene glycol octylphenyl ether, and 2g of %PEDOT:PSS were fully stirred to complete the preparation.

[0024] Coat the prepared coating ink onto the substrate by spin coating, then pre-bake it in an...

Embodiment 2

[0026] The formula of the coating liquid is: the nano-metal wire is selected as the nano-silver wire, the wire length should be 20 μm, the wire diameter should be 35 nm, the content of the nano-silver wire is 0.1%, 0.2% polyvinyl alcohol, 0.02% nano-spherical silica, the particle size 10nm, 0.01% γ-glycidyl etheroxypropyl trimethoxysilane, 0.02% polyethylene glycol octylphenyl ether, 0.4% nano-zinc oxide, nano-zinc oxide is linear, particle size 30m, line length 20μm . 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 237.85g of 0.4% polyvinyl alcohol aqueous solution to it while stirring, and finally add 10g of 1% silver wire respectively Silicon oxide hydrosol, 0.05g of γ-glycidyl etheroxypropyl trimethoxysilane, 0.1g of polyethylene glycol octylphenyl ether, and 2g of nanometer zinc oxide powder were fully stirred and prepared.

[0027] Coat the prepared coating ink onto the substr...

Embodiment 3

[0029] The formula of the coating liquid is: the nano-metal wire is selected as the nano-silver wire, the wire length should be 20 μm, the wire diameter should be 35 nm, the content of the nano-silver wire is 0.1%, 0.2% polyvinyl alcohol, 0.1% polyurethane acrylic resin, 0.01% polyvinyl alcohol Ethylene glycol octyl phenyl ether, 0.2% nano-zinc oxide, the nano-zinc oxide is linear, the particle size is 30m, and the line length is 20μm. 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 242.9g of 0.4% polyvinyl alcohol aqueous solution to it while stirring, and finally add 5g of 10% polyurethane The acrylic resin hydrosol, 0.1g of polyethylene glycol octyl phenyl ether, and 2g of nano-zinc oxide powder are fully stirred and prepared.

[0030] Coat the prepared coating ink onto the substrate by spin coating, then pre-bake it in an oven at 100 degrees for 5 minutes, and then put it in an o...

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Abstract

The invention relates to a manufacturing method for a nanometal transparent conductive film. Specific 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 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; (5) at last, making the substrate with a conductive layer pass a planishing mill so as to obtain a conductive layer which is lower in haze level. Through optimization of a formula of the nanometal suspension liquid and conditions of a coating process, 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 nano metal coating liquid, in particular to manufacturing nano 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 the high requirements of both. Fo...

Claims

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Application Information

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