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Preparation process for graphene conductive film

A conductive film and preparation process technology, applied in cable/conductor manufacturing, conductive layers on insulating carriers, circuits, etc., can solve the problems of high cost, complex process, long process route, etc., to save costs, simplify process flow, The effect of improving the degree of structural orientation

Active Publication Date: 2019-05-24
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method has a long process route, complicated process, and even requires copper foil or catalyst, resulting in high cost

Method used

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  • Preparation process for graphene conductive film
  • Preparation process for graphene conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Fully mix the graphene-based conductive functional agent, binder dispersion, and additives to form a semi-dry slurry, and then pass it through the vertical rolling part a, the guiding traction part b, the hot rolling part c, and the conveying part d , the cold rolling part e and the purging part f are prepared into a graphene conductive film.

[0046] The weight composition of the graphene-based conductive functional agent, binder dispersion and auxiliary agent is: 20wt%, 60wt%, 1wt%, and the remaining components are water.

[0047] Described graphene-based conductive functional agent is the 0.1 micron graphene and 20wt% (relative to graphene-based conductive functional agent) of 0.1 micron graphene with redox method sheet diameter (relative to graphene-based conductive functional agent) A mixture of granular Ketjen Black solid-phase mixtures.

[0048] The binder dispersion is an aqueous dispersion with a solid content of 30 wt% formed by dispersing PTFE with a solid c...

Embodiment 2

[0059] Fully mix the graphene-based conductive functional agent, binder dispersion, and additives to form a semi-dry slurry, and then pass it through the vertical rolling part a, the guiding traction part b, the hot rolling part c, and the conveying part d , the cold rolling part e and the purging part f are prepared into a graphene conductive film.

[0060] The weight composition of the graphene-based conductive functional agent, binder dispersion and auxiliary agent is: 60wt%, 30wt%, 2wt%, and the remaining components are water.

[0061] Described graphene-based conductive functional agent is 50wt% (relative to graphene-based conductive functional agent) Graphene and 50wt% (relative to graphene-based conductive functional agent) high temperature pyrolysis method sheet diameter is 0.05 micron ) is a mixture of carbon nanotubes mixed in solid phase.

[0062] The binder dispersion liquid is a dispersion liquid formed by dispersing polyvinyl alcohol in water with a solid conten...

Embodiment 3

[0073] Fully mix the graphene-based conductive functional agent, binder dispersion, and additives to form a semi-dry slurry, and then pass it through the vertical rolling part a, the guiding traction part b, the hot rolling part c, and the conveying part d , the cold rolling part e and the purging part f are prepared into a graphene conductive film.

[0074] The weight composition of the graphene-based conductive functional agent, binder dispersion and auxiliary agent is: 40wt%, 40wt%, 3wt%, and the remaining components are water.

[0075] Described graphene-based conductive functional agent is that 10wt% (relative to graphene-based conductive functional agent) is 0.05 micron graphene and 90wt% (relative to graphene-based conductive functional agent) ) of silver nanosheets solid-phase mixed mixture.

[0076] The binder dispersion is a dispersion with a solid content of 40wt formed by dispersing nitrocellulose in ethyl acetate.

[0077] The auxiliary agent is 1 part of BYK163...

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Abstract

The invention provides a preparation process of a graphene conductive film. The preparation process is of simplicity and has high efficiency. According to the preparation process, a dry preparation process is adopted. The dry preparation process includes the following steps that: a graphene-based conductive functional agent, a binder dispersion, and an auxiliary are thoroughly mixed so as to forma semi-dry slurry; and the semi-dry slurry is subjected to a vertical rolling procedure a, a guide traction procedure b, a thermal rolling procedure c, a transfer procedure d, a cold rolling proceduree and a blowing procedure f, so that a graphene conductive film is obtained. With the preparation process of the invention adopted, the continuous preparation of the graphene conductive film is realized, process steps such as mixing and dispersing, slurrying and coating are avoided; and the procedures are optimized, and efficiency can be improved, and therefore, costs can be saved, high-speed non-stop preparation is realized, and a process flow is simplified.

Description

technical field [0001] The invention belongs to the technical field of conductive thin films, and in particular relates to a process for preparing graphene conductive thin films. Background technique [0002] Conductive film is a film that can conduct electricity and realize some specific electronic functions. Due to its own characteristics of conductivity, flexibility, and ultra-thinness, it is used in infrared reflective films (automotive films, heating films), antistatic films, Electromagnetic shielding film, charged protective film, electrochromic film, high-density storage, low-wavelength laser, optical fiber communication and other fields have been widely used. Currently the most commonly used is In 2 o 3 : Sn(ITO), Sb: SnO 2 (ATO) and ZnO: A1 (ZAO) and other inorganic oxide transparent conductive films, but these films have high brittleness, poor toughness, high synthesis temperature, and poor bonding with the substrate. These shortcomings limit their further appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B5/14
Inventor 陈成猛李晓明刘卓苏方远谢莉婧孔庆强曹芳
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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