Graphene double-layer electroactive membrane and preparation method thereof

A graphene and graphene dispersion technology, applied in graphene, coatings, conductive coatings, etc., can solve the problems of large flexural modulus, slow response rate, large actuation voltage, etc., to achieve improved conductivity and sensitive response , large deformation effect

Inactive Publication Date: 2018-03-09
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN105803403 discloses "an electrically actuated graphene oxide / metal double-layer film and its preparation method". Asymmetric metal graphene double-layer films are prepared by thermal evaporation, relying on the expansion of metal materials and graphene Due to the large bending modulus of the metal, the double-layer film has the disadvantages of high actuation voltage, slow response rate, high production cost and complicated process.

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  • Graphene double-layer electroactive membrane and preparation method thereof
  • Graphene double-layer electroactive membrane and preparation method thereof
  • Graphene double-layer electroactive membrane and preparation method thereof

Examples

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Embodiment 1

[0042] A preparation method and application of an electrically actuated graphene-polymer functional film material, wherein the graphene-polymer functional film (i.e. graphene double-layer electric actuation film) is composed of a reduced graphene oxide layer (i.e. Flexible conductive layer) and a double-layer film composed of a polymer film. Proceed as follows:

[0043] a, the synthesis of graphene oxide:

[0044] ① Graphene oxide is synthesized by the Hummers method, taking 2g flake graphite powder and 1g NaNO 3 , add concentrated sulfuric acid (mass percentage concentration is 98%) 46ml under ice-bath condition (temperature 0~5 ℃), add 6g KMnO under the situation of stirring 4 , and control the reaction temperature at 4-10°C;

[0045] ② After reacting for 100 minutes, heat up to 40°C, stir vigorously for 60 minutes, then heat up to 90°C and add 90ml of deionized water, stir at a medium speed (50r / min) for 30 minutes, then cool to room temperature;

[0046] ③Add 100ml of ...

Embodiment 2

[0060] A preparation method and application of an electrically actuated graphene-polymer functional film material. conductive layer) and a polymer film, the preparation method of reduced graphene oxide (i.e. reduced graphene oxide dispersion) is the same as in Example 1, and this embodiment 2 adds PEDOT / PSS (poly3 , 4-ethylenedioxythiophene / polystyrene sulfonate) solution to increase the conductivity of the membrane.

[0061] a, the synthesis of graphene oxide:

[0062] ① Graphene oxide is synthesized by the Hummers method, taking 2g flake graphite powder and 1g NaNO 3 46 ml of concentrated sulfuric acid (98% by mass concentration) was added under the temperature condition of an ice bath (0-5° C.). Add 6 g KMnO while stirring 4 , and control the reaction temperature at 4-10°C;

[0063] ② After reacting for 100 minutes, heat up to 40°C, stir vigorously for 60 minutes, then heat up to 90°C and add 90ml of deionized water, stir at a medium speed (50r / min) for 30 minutes, then...

Embodiment 3

[0078] A preparation method and application of an electrically actuated graphene-polymer functional film material. conductive layer) and a polymer film, the preparation method of reduced graphene oxide (i.e. reduced graphene oxide dispersion) is basically the same as the step in Example 2, and the reduced graphene oxide dispersion is drop-coated on PDMS in this embodiment 3 (Polydimethylsiloxane) polymer film substrate, to test the response characteristics of actuation films (ie, graphene bilayer electro-actuation films) prepared from different polymer films.

[0079] The preparation method of graphene-polymer functional film:

[0080] Take a PDMS film of appropriate size, and drop-coat the above-mentioned reduced graphene oxide dispersion containing doped PEDOT / PSS. The thickness of the graphene layer is controlled by the concentration of the reduced graphene oxide dispersion and the amount of dripping. Then place it in an oven and dry at 45° C. for 3 to 5 hours to form a fl...

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Abstract

The invention discloses a graphene double-layer electroactive membrane and a preparation method thereof. The graphene double-layer electroactive membrane is composed of a flexible conducting layer anda flexible polymer layer. The preparation method comprises mixing and reacting flake graphite powder, NaNO3, sulfuric acid, KMnO4 and deionized water, and performing washing and drying processes to obtain graphene oxide; mixing and ultrasonic-dispersing the graphene oxide, hydrazine hydrate, ammonium hydroxide and deionized water for reaction to obtain reduced graphene oxide dispersion liquid; dropwise or rotatingly applying the reduced graphene oxide dispersion liquid onto a flexible polymer layer-polymer membrane and performing a drying process to form the flexible conducting layer onto thepolymer membrane to obtain the graphene double-layer electroactive membrane. The graphene double-layer electroactive membrane has the advantages of high responsiveness, low power, broad pressure range and the like when being electrically driven, and can be applied to the fields of flexible wearable equipment, micro motor actuators and micro-robots.

Description

technical field [0001] The invention belongs to smart materials and their preparation, and relates to a graphene double-layer electric actuation film and a preparation method thereof, in particular to a graphene polymer layered film material and its preparation and the application of an electric actuation functional film. Graphene double-layer electro-actuated films can be applied in flexible wearable devices, micro-motor actuators, micro-robots and other fields. Background technique [0002] Actuator technology, as a bionic technology, has been extensively studied in the fields of materials, energy, and electronics. At present, the actuation forms of actuators include optical actuation, ion actuation, magnetic actuation, chemical actuation and electric actuation, etc. According to the actuation materials, there are mainly piezoelectric ceramics, liquid crystal polymers, and conductive polymers. , ion exchange and carbon-based materials. As a common clean energy, electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C09D1/00C09D7/65C09D5/24C01B32/19C08L23/06C08L23/12C08L27/06C08L27/08C08L27/16
CPCC08J7/06C08J2323/06C08J2323/12C08J2327/06C08J2327/08C08J2327/16C09D1/00C09D5/24
Inventor 刘剑桑玮赵黎明
Owner SOUTHWEAT UNIV OF SCI & TECH
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