Covalent bonding PET based nanometer silver wire and graphene combined transparent flexible conductive film and preparation method thereof

Abstract

The invention discloses a preparation method of a covalent bonding PET based nanometer silver wire and graphene combined transparent flexible conductive film. The method comprises the following stepsof (1) primary coating, in which a PET substrate is coated with a nanometer silver wire coating liquid, drying by hot air is carried out, and a conductive film with a nanometer silver wire conductinglayer is obtained; and (2) secondary coating, in which the conductive film with the nanometer silver wire conducting layer is coated with a modified graphene alcoholic solution, UV irradiation and drying by hot air are implemented, and the covalent bonding PET based nanometer silver wire and graphene combined transparent flexible conductive film is obtained. The invention also discloses the covalent bonding PET based nanometer silver wire and graphene combined transparent flexible conductive film. Excellent characteristic and chemical grafting modification of graphene are used innovatively, the PET-based transparent flexible conductive film is obtained after secondary coating, the clunging, conductivity and oxidation-resisting quality are high, and optical performances as the haze and light transmittance are not influenced.

Description

technical field

[0001] The invention relates to a transparent and flexible conductive film, in particular to a conductive covalently bonded PET-based nano-silver wire graphene composite transparent and flexible conductive film and a preparation method thereof. Background technique

[0002] ITO (Indium Tin Oxide) has been the main choice of conductive material for touch panel products for 30 years. However, the dominance of ITO is no longer guaranteed. With the demand for large-scale and low-cost touch panels and the development and application of "flexible" display technology in the past two years, ITO materials are relatively fragile, and their lifespan is relatively low when used in flexible displays, which cannot meet future flexible displays, especially Touch display requirements for wearable devices. At the same time, new alternative materials can also reduce the manufacturing cost of touch panels.

[0003] Currently the most concerned emerging alternative materials ...

Examples

Embodiment 1

[0040] An embodiment of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film of the present invention, the preparation method of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film comprises The following steps:

[0041](1) Preparation of nano-silver wire water-based coating solution: select nano-silver wire with an aspect ratio of 800 and disperse it in the water-based hydroxyethyl acrylate monomer, and after mechanical stirring at room temperature for 30 minutes, configure it into a uniform dispersion with a solid content of 0.5% Nano-silver wire water-based hydroxyethyl acrylate coating liquid, and loaded into the micro-gravure coating head;

[0042] (2), preparation of modified graphene ethanol solution: after the 2-layer graphene is acidified and activated with nitric acid, then the graphene with active groups such as hydroxyl and carboxyl on the surface is dispersed i...

Embodiment 2

[0046] An embodiment of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film of the present invention, the preparation method of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film comprises The following steps:

[0047] (1) Preparation of nano-silver wire water-based coating solution: select nano-silver wire with an aspect ratio of 800 and disperse it in water-based hydroxyethyl acrylate monomer, and after mechanical stirring at room temperature for 45 minutes, configure it into a uniformly dispersed coating with a solid content of 1%. Nano-silver wire water-based hydroxyethyl acrylate coating liquid, and loaded into the micro-gravure coating head;

[0048] (2), preparation of modified graphene ethanol solution: after the 2-layer graphene is acidified and activated with nitric acid, then the graphene with active groups such as hydroxyl and carboxyl on the surface is disper...

Embodiment 3

[0052] An embodiment of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film of the present invention, the preparation method of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film comprises The following steps:

[0053] (1) Preparation of nano-silver wire water-based coating solution: select nano-silver wires with an aspect ratio of 800 and disperse them in water-based acrylic monomers, and after mechanical stirring at room temperature for 60 minutes, configure them into uniformly dispersed nano-silver wires with a solid content of 2% Water-based acrylic coating solution, and loaded into the micro gravure coating head;

[0054] (2), preparation of modified graphene ethanol solution: first use nitric acid and sulfuric acid mixed strong acid to acidify and activate the 2-layer graphene, and then disperse the graphene with active groups such as hydroxyl and carboxyl on the su...

technical field

[0001] The invention relates to a transparent and flexible conductive film, in particular to a conductive covalently bonded PET-based nano-silver wire graphene composite transparent and flexible conductive film and a preparation method thereof. Background technique

[0002] ITO (Indium Tin Oxide) has been the main choice of conductive material for touch panel products for 30 years. However, the dominance of ITO is no longer guaranteed. With the demand for large-scale and low-cost touch panels and the development and application of "flexible" display technology in the past two years, ITO materials are relatively fragile, and their lifespan is relatively low when used in flexible displays, which cannot meet future flexible displays, especially Touch display requirements for wearable devices. At the same time, new alternative materials can also reduce the manufacturing cost of touch panels.

[0003] Currently the most concerned emerging alternative materials ...

Examples

Embodiment 1

[0040] An embodiment of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film of the present invention, the preparation method of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film comprises The following steps:

[0041](1) Preparation of nano-silver wire water-based coating solution: select nano-silver wire with an aspect ratio of 800 and disperse it in the water-based hydroxyethyl acrylate monomer, and after mechanical stirring at room temperature for 30 minutes, configure it into a uniform dispersion with a solid content of 0.5% Nano-silver wire water-based hydroxyethyl acrylate coating liquid, and loaded into the micro-gravure coating head;

[0042] (2), preparation of modified graphene ethanol solution: after the 2-layer graphene is acidified and activated with nitric acid, then the graphene with active groups such as hydroxyl and carboxyl on the surface is dispersed i...

Embodiment 2

[0046] An embodiment of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film of the present invention, the preparation method of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film comprises The following steps:

[0047] (1) Preparation of nano-silver wire water-based coating solution: select nano-silver wire with an aspect ratio of 800 and disperse it in water-based hydroxyethyl acrylate monomer, and after mechanical stirring at room temperature for 45 minutes, configure it into a uniformly dispersed coating with a solid content of 1%. Nano-silver wire water-based hydroxyethyl acrylate coating liquid, and loaded into the micro-gravure coating head;

[0048] (2), preparation of modified graphene ethanol solution: after the 2-layer graphene is acidified and activated with nitric acid, then the graphene with active groups such as hydroxyl and carboxyl on the surface is disper...

Embodiment 3

[0052] An embodiment of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film of the present invention, the preparation method of the covalently bonded PET-based nano-silver wire graphene composite transparent flexible conductive film comprises The following steps:

[0053] (1) Preparation of nano-silver wire water-based coating solution: select nano-silver wires with an aspect ratio of 800 and disperse them in water-based acrylic monomers, and after mechanical stirring at room temperature for 60 minutes, configure them into uniformly dispersed nano-silver wires with a solid content of 2% Water-based acrylic coating solution, and loaded into the micro gravure coating head;

[0054] (2), preparation of modified graphene ethanol solution: first use nitric acid and sulfuric acid mixed strong acid to acidify and activate the 2-layer graphene, and then disperse the graphene with active groups such as hydroxyl and carboxyl on the su...

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