Preparation method of conductive macromolecule non-covalent functionalized graphene modified electrokinetic energy conversion polymer material

A technology of non-covalent modification and polymer materials, which is applied in the field of non-covalent modification of conductive polymer graphene modified electrokinetic energy conversion polymer materials, which can solve the limitations of material applications, reduction of electrical breakdown strength, dielectric loss and Improve the dispersion, reduce the dielectric loss and loss modulus, and increase the dielectric constant.

Inactive Publication Date: 2016-04-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the percolation theory, the dielectric constant of polymer-based composites filled with conductive particles can be significantly increased when the filler content reaches the percolation threshold, and the percolation threshold filler content is very small (<5%), and graphite with high conductivity Graphene nanosheets are ideal conductive fillers, but the surface of graphene nanosheets is in a hydro

Method used

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  • Preparation method of conductive macromolecule non-covalent functionalized graphene modified electrokinetic energy conversion polymer material
  • Preparation method of conductive macromolecule non-covalent functionalized graphene modified electrokinetic energy conversion polymer material
  • Preparation method of conductive macromolecule non-covalent functionalized graphene modified electrokinetic energy conversion polymer material

Examples

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Example Embodiment

[0028] Example 1: Preparation of PEDOT:PSS-RGO (1)

[0029] Add 10 mL of deionized water to a 25 mL small beaker, then add 50 mg of graphene and ultrasonically assist dispersion for 6 hours, then use a needle syringe to add 3.5 mL of PEDOT:PSS (density 1g / mL, solid content 1.4%) solution, ultrasonic dispersion After 4 hours, pour the mixed solution on quartz glass with a diameter of 6 cm and a smooth bottom surface, and place it in a drying oven at a low temperature of 50 ℃ for solvent evaporation to induce self-assembly for 24 hours to obtain poly(3,4-ethylenedioxythiophene): poly Styrene sulfonic acid non-covalently modified graphene PEDOT: PSS-RGO (1). The SEM and TEM images of the prepared PEDOT:PSS-RGO show that the nanomaterial presents a "sandwich" structure, and a thin layer of conductive polymer is evenly coated on the surface of the graphene sheet.

Example Embodiment

[0030] Example 2: Preparation of PEDOT:PSS-RGO (2)

[0031] Add 10mL of deionized water to a 25mL small beaker, then add 50mg of graphene and ultrasonically assist the dispersion for 6h, then use a needle syringe to add 3.5mL of PEDOT:PSS (density 1g / mL, solid content 1.4%) solution, ultrasonic dispersion After 4 hours, pour the mixed solution on the quartz glass with a smooth and flat bottom, and place it in a dry box at a low temperature of 50°C for solvent evaporation to induce self-assembly for 24 hours to obtain poly(3,4-ethylenedioxythiophene): polystyrene sulfonate Acid non-covalent modification of graphene PEDOT: PSS-RGO (2).

Example Embodiment

[0032] Example 3: Preparation of PEDOT:PSS-RGO (3)

[0033] Add 10mL of deionized water to a 25mL small beaker, then add 50mg of graphene and ultrasonically assist the dispersion for 6h, then use a needle syringe to add 0.7mL of PEDOT:PSS (density 1g / mL, solid content 1.4%) solution, ultrasonic dispersion After 4 hours, pour the mixed solution on the quartz glass with a smooth and flat bottom, and place it in a dry box at a low temperature of 50°C for solvent evaporation to induce self-assembly for 24 hours to obtain poly(3,4-ethylenedioxythiophene): polystyrene sulfonate Acid non-covalent modification of graphene PEDOT: PSS-RGO (3).

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Abstract

The invention discloses a preparation method of a conductive macromolecule non-covalent functionalized graphene modified electrokinetic energy conversion polymer material. according to the method, conductive macromolecules are non-covalent functionalized onto the surface of nano-graphene; and then, the conductive macromolecule non-covalent functionalized graphene nano-material undergoes ultrasonic-assisted dispersion into an electrokinetic energy conversion polymer solution so as to finally obtain a conductive macromolecule non-covalent functionalized graphene/electrokinetic energy conversion polymer composite material. The electro-stimulate response intelligent polymer composite material obtained by the method has high dielectric constant and high electrodeformation value. When content of poly(3,4-ethylenedioxythiophene): polystyrolsulfon acid non-covalent functionalized graphene nanofiller is 3%, dielectric constant of the modified polyurethane dielectric elastomer intelligent material reaches up to 350 at room temperature and at the frequency of 1000 Hz, dielectric loss is 0.20, and loss modulus is 200 MPa. Under the action of a 32.2 MV/m electric field, electrodeformation value in the thickness direction reaches 162%. Performance of the material provided by the invention is far more excellent than performance of a regular nano-ceramic or nano-conductive filler modified intelligent polymer composite material.

Description

technical field [0001] The invention relates to the field of stimuli-responsive intelligent polymer composite materials, in particular to a method for non-covalently modifying graphene-modified electrokinetic energy conversion polymer materials by conductive polymers. Background technique [0002] Electrokinetic energy conversion polymer materials are a new type of flexible smart materials that can produce large size or shape changes under the excitation of an electric field. They have the characteristics of electrical energy-mechanical energy conversion. It has broad application prospects in many fields such as actuators, audio and ultrasonic sensors, biomedical sensors, electromechanical transducers and energy harvesters, robots, micro-motor systems, and artificial muscles. Compared with functional materials such as electroactive ceramics and shape memory alloys, electrokinetic energy conversion polymers have large deformation, high electromechanical response performance, ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08K9/04C08K3/04C08L75/04C08L33/00C08L83/04C08L27/16
CPCC08J5/18C08J2327/16C08J2333/00C08J2375/04C08J2383/04C08K3/04C08K9/08C08K2201/011C08L2203/16C08L75/04C08L33/00C08L83/04C08L27/16
Inventor 陈田裘进浩朱孔军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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