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PEDOT-PET/graphene quantum dot composite structure conductive film and preparation method thereof

A technology of graphene quantum dots and quantum dots, which is applied in the field of PVDF-PET/graphene quantum dot composite film and its preparation, can solve problems such as adverse effects on film strength, affecting film uniformity and gloss, and easy agglomeration of graphene , to achieve the effects of reducing the risk of addition polymerization, regular structure, and improving compatibility

Inactive Publication Date: 2019-01-18
王怡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that graphene in the conductive film of the prior art is easy to agglomerate, and the graphite stack structure will be re-formed, which will not only seriously affect the uniformity and gloss of the film, but also adversely affect the strength and other parameters of the film. , to provide a method for preparing a PEDOT-PET composite film doped with graphene quantum dots, which solves the technical problem that graphene is easy to agglomerate in the prior art, and also improves the conductivity, light transmittance and flexibility of the film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a method for preparing a PEDOT-PET / graphene quantum dot composite film, which includes the following steps:

[0044] S1: Preparation of graphene quantum dots: add 5.0 g chopped polyacrylonitrile-based carbon fiber to a glass beaker, add 500ml of distilled water to submerge the carbon fiber, transfer to a microwave oven with a frequency of 890 MHz and a power of 800W, microwave radiation for 90 seconds, and cool Then filter the mixture in the beaker with a qualitative filter paper with a pore size of about 50 microns to obtain a graphene quantum dot source solution. The graphene quantum dot source solution was vacuum distilled and concentrated to 50ml, and then put into a dialysis bag (Union Carbide Company, 25,000 channels Dialysis) and sealed, immersed in a beaker containing 500ml of distilled water, stirred and dialyzed at 30°C for 12 hours to obtain the graphene oxide nanosheet solution in the dialysis bag and the graphene oxide quantum dot solut...

Embodiment 2

[0051] This embodiment provides a method for preparing a PEDOT-PET / graphene quantum dot composite film, which includes the following steps:

[0052] S1: Preparation of graphene quantum dots: add 5.0 g chopped polyacrylonitrile-based carbon fiber to a glass beaker, add 500ml of distilled water to submerge the carbon fiber, transfer to a microwave oven with a frequency of 890 MHz and a power of 800W, microwave radiation for 90 seconds, and cool Then filter the mixture in the beaker with a qualitative filter paper with a pore size of about 50 microns to obtain a graphene quantum dot source solution. The graphene quantum dot source solution was vacuum distilled and concentrated to 50ml, and then put into a dialysis bag (Union Carbide Company, 25,000 channels Dialysis) and sealed, immersed in a beaker containing 500ml of distilled water, stirred and dialyzed at 30°C for 12 hours to obtain the graphene oxide nanosheet solution in the dialysis bag and the graphene oxide quantum dot solut...

Embodiment 3

[0059] This embodiment provides a method for preparing a PEDOT-PET / graphene quantum dot composite film, which includes the following steps:

[0060] S1: Preparation of graphene quantum dots: add 5.0 g chopped polyacrylonitrile-based carbon fiber to a glass beaker, add 500ml of distilled water to immerse the carbon fiber, transfer to a microwave oven with a frequency of 890 MHz and a power of 800W, microwave radiation for 90 seconds, and cooling Then filter the mixture in the beaker with a qualitative filter paper with a pore size of about 50 microns to obtain a graphene quantum dot source solution. The graphene quantum dot source solution was vacuum distilled and concentrated to 50ml, and then put into a dialysis bag (Union Carbide Company, 25,000 channels Dialysis) and sealed, immersed in a beaker containing 500ml of distilled water, stirred and dialyzed at 30°C for 12 hours to obtain the graphene oxide nanosheet solution in the dialysis bag and the graphene oxide quantum dot sol...

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Abstract

The invention relates to the field of preparation of conductive film materials, and discloses a PEDOT-PET / graphene quantum dot flexible transparent conductive film and a preparation method thereof. The preparation method comprises the following steps: preparing graphene oxide quantum dots; preparing EDOT / graphene oxide quantum dot mixed slurry; carrying out physical etching treatment on a PET filmwith a thickness of 20-30[mu]m, and plating hydrophilic groups on the surface of the PET film by a corona method; carrying out adsorption: soaking the PET film in an iron toluenesulfonate solution toobtain a PET film absorbing iron toluenesulfonate, carrying out drying, and then soaking the PET film in the EDOT / graphene oxide quantum dot mixed slurry to obtain a PEDOT-PET / graphene oxide quantumdot conductive film; and S5, carrying out hydrazine vapor reduction reaction: placing the PEDOT-PET / graphene oxide quantum dot conductive film in hydrazine vapor at a reduction temperature of 100 DEGC for reduction for 12-24 hours to obtain the PEDOT-PET / graphene quantum dot conductive film. The conductive film prepared by the method fully utilizes the quantum effect of graphene quantum dots, sothat the mechanical properties are obviously improved, and the electrical conductivity and the thermal conductivity are obviously increased.

Description

Technical field [0001] The invention belongs to the field of composite film material preparation, and in particular relates to a PVDF-PET / graphene quantum dot composite film and a preparation method thereof. Background technique [0002] Transparent conductive film is a key material for optoelectronic devices such as touch screens, display screens, electronic paper, and smart light windows. Transparent conductive films on the market are mainly products with indium tin oxide (ITO) films as conductive coatings. With the development of optoelectronic devices in the direction of light and thin, flexible and large area, higher requirements are put forward for transparent conductive film, and indium tin oxide is brittle, indium is a rare metal, and resources are scarce; the flexibility is poor, and the existing ITO is transparent The conductive film cannot meet the needs of the development of optoelectronic devices, so many scientific and technological workers are eager to develop a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/16C08L67/02
CPCC08J7/16C08J2367/02
Inventor 王怡
Owner 王怡