Carbon-based flexible conductive film, preparation method and application

A flexible conductive, carbon-based technology, applied in the field of conductive materials, can solve the problems of high surface resistance, difficulty in meeting the requirements of antistatic performance and conductive performance, and achieve the effect of excellent conductive performance, low filling rate, and simple preparation process

Active Publication Date: 2021-02-19
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, TPU is a high-molecular organic substance with high surface resistance, so it is difficult to meet the occasions with high requirements for antistatic performance and electrical conductivity.

Method used

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  • Carbon-based flexible conductive film, preparation method and application
  • Carbon-based flexible conductive film, preparation method and application
  • Carbon-based flexible conductive film, preparation method and application

Examples

Experimental program
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preparation example Construction

[0043] The present invention provides the preparation method of above-mentioned carbon-based flexible conductive film, such as figure 1 , is a flow chart of the preparation process of the carbon-based flexible conductive film of the present invention.

[0044] include:

[0045] Step S1: Dissolving the TPU masterbatch into a solvent, the solvent is DMF (dimethylformamide) or DMAC (dimethylacetamide), heating and stirring at 70-90°C to obtain the first co-solution;

[0046] Step S2: Disperse the carbon material into a solvent, the solvent is DMF or DMAC, the concentration of the carbon material is 1-3 mg / mL, and the temperature is controlled for ultrasonic dispersion to obtain the second co-solution, solvent selection and the solvent used in the preparation of the first co-solution Consistent; the mass ratio of carbon material and TPU masterbatch is 1:250~1:50, the carbon material includes the first component and the second component, the first component includes graphene and / or ...

Embodiment 1

[0053] The present embodiment carbon-based flexible conductive film comprises TPU and carbon material, and the mass ratio of carbon material and TPU is 1: 50, and carbon material is graphene (I D / I G =0.10) and graphite (I D / I G =0.18), the mass ratio of graphene and graphite is 1:1.

[0054] The preparation method of the carbon-based flexible conductive film in this embodiment is as follows:

[0055] Preparation of the first co-solution: Dissolve the TPU masterbatch with DMF, the ratio of TPU masterbatch and DMF is 1-3g / mL, place it in a magnetic stirrer and heat and stir at 70-90°C for 3h.

[0056] Preparation of the second co-solution: Utilize DMF to disperse graphene (I D / I G =0.10) and graphite (I D / I G =0.18), the concentration is 1-3mg / mL, the mass ratio of graphene and graphite is 1:1, ultrasonic dispersion is 30min and the temperature is controlled at 30°C.

[0057] Slowly pour the second co-solution into the first co-solution, ultrasonically disperse for ...

Embodiment 2

[0059] The present embodiment carbon-based flexible conductive film comprises TPU and carbon material, and the mass ratio of carbon material and TPU is 1: 50, and carbon material is graphene (I D / I G =0.11) and carbon nanotubes (I D / I G =0.23), the mass ratio of graphene and carbon nanotubes is 1:1.

[0060] The preparation method of the carbon-based flexible conductive film in this embodiment is as follows:

[0061] Preparation of the first co-solution: Dissolve the TPU masterbatch with DMF, the ratio of TPU masterbatch and DMF is 1-3g / mL, place it in a magnetic stirrer and heat and stir at 70-90°C for 3h.

[0062] Preparation of the second co-solution: Utilize DMF to disperse graphene (I D / I G =0.11) and carbon nanotubes (I D / I G =0.23), the concentration is 1-3mg / mL, the mass ratio of graphene and carbon nanotubes is 1:1, ultrasonic dispersion is 30min and the temperature is controlled at 30°C.

[0063] Slowly pour the second co-solution into the first co-soluti...

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Abstract

The invention relates to a carbon flexible conductive film and a preparation method thereof. The carbon flexible conductive film comprises TPU and a carbon material. The carbon flexible conductive film is characterized in that the mass ratio of the carbon material to TPU is 1: 250 to 1: 50, the carbon material comprises a first component and a second component, the first component comprises graphene and/or reduced graphene oxide, the second component comprises one or more of graphite, conductive carbon black and carbon nanotubes, the ID/IG value of the Raman spectrum peak of the first component is A, the ID/IG value of the Raman spectrum peak of the second component is B, and the absolute value of the difference between A and B is less than or equal to 0.4. The carbon-based flexible conductive film provided by the invention uses less carbon material, the dispersion process is relatively simple, the conductivity can be as low as 10<-4> ohm.m, and the final product meets the anti-staticperformance requirement and the conductive performance requirement in GBT 15662-1995 that the volume resistivity is lower than 10<6>ohm.m, and can be applied to flexible electronic devices.

Description

technical field [0001] The invention belongs to the field of conductive materials, and in particular relates to a carbon-based flexible conductive film, a preparation method and an application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Thermoplastic polyurethane elastomer (TPU) is a kind of plastic that can be plasticized when heated, and still has fluidity after being cooled and reheated. It has good reprocessing and recycling properties. It is made from oligomer polyol, polyisocyanate, chain extender / crosslinking agent and a small amount of additives. The macromolecular diol and isocyanate form a soft segment, and the small molecule diol and isocyanate form a hard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K3/04C08J5/18C08J3/215
CPCC08J3/215C08J5/18C08J2375/04C08K3/04C08K2201/001C08K3/041C08K3/042
Inventor 吴炳辉胡晓康郑南峰
Owner XIAMEN UNIV
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