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Steam reduced graphene oxide conductive high-polymer composite film, and preparation method and application thereof

A technology of conductive polymers and polymers, applied in the direction of graphene, chemical instruments and methods, equipment for manufacturing conductive/semiconductive layers, etc., can solve the problems such as the limitation of reduced graphene oxide film formation, and achieve simple preparation methods , Good electrical conductivity, improve the effect of application

Inactive Publication Date: 2017-11-21
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For most of the chemical reduction methods, only the reduction of the solution is used. Although the graphene oxide can be successfully reduced, it cannot be well dispersed in the solvent, so there are many restrictions on the film formation of the reduced graphene oxide.

Method used

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  • Steam reduced graphene oxide conductive high-polymer composite film, and preparation method and application thereof
  • Steam reduced graphene oxide conductive high-polymer composite film, and preparation method and application thereof
  • Steam reduced graphene oxide conductive high-polymer composite film, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 (manufacturing process such as figure 1 shown)

[0027] 1. Disperse 10 mg of graphene oxide in absolute ethanol, stir and sonicate for 1 hour to obtain a graphene oxide solution with a concentration of 3.5 mg / ml, and heat and dry it on the polymer substrate to obtain a conductive layer;

[0028] 2. Dissolve 200mg of polyurethane PU in N,N dimethylacetamide (DMAC) to prepare a 100mg / ml solution, heat, stir and ultrasonically make the solution uniform to obtain a polyurethane PU solution;

[0029] 3. Drop-coat the polyurethane PU solution on the conductive layer obtained in the above step 1, place it in a vacuum drying oven and heat it at 70°C for 12 hours, and then vacuumize it for 24 hours to obtain a flexible graphene oxide polymer film;

[0030] 4. Peel off the graphene oxide polymer film from the substrate, then place it in a closed container, add 1.5ml of hydrazine hydrate solution dropwise around the graphene oxide polymer film, and then place the clo...

Embodiment 2

[0033] 1. Disperse 10 mg of graphene oxide in absolute ethanol, stir and sonicate for 1 hour to obtain a graphene oxide solution with a concentration of 3.5 mg / ml, and heat and dry it on the polymer substrate to obtain a conductive layer;

[0034] 2. Dissolve 200mg of polyurethane PU in N,N dimethylacetamide (DMAC) to prepare a 100mg / ml solution, heat, stir and ultrasonically make the solution uniform to obtain a polyurethane PU solution;

[0035] 3. Drop-coat the polyurethane PU solution on the conductive layer obtained in the above step 1, place it in a vacuum drying oven and heat it at 70°C for 12 hours, and then vacuumize it for 24 hours to obtain a flexible graphene oxide polymer film;

[0036] 4. The graphene oxide polymer film is peeled off from the substrate, and then placed in an airtight container, and the hydrazine hydrate-ammonia water mixed solution of 1.5ml is added dropwise around the graphene oxide polymer film (the volume ratio ratio of hydrazine hydrate and am...

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Abstract

The invention belongs to the fields of high-polymer materials and conductive nano materials, and discloses a steam reduced graphene oxide conductive high-polymer composite film, and a preparation method and application thereof. The preparation method comprises the following steps: coating a high-polymer matrix with a graphene oxide solution through drop coating or spin coating, and performing heating and drying to obtain a conductive layer; coating the conductive layer with an elastic high-polymer solution through drop coating, and performing high-temperature vacuum solidification to form a flexible graphene oxide high-polymer film; and stripping the graphene oxide high-polymer film from the matrix, putting the graphene oxide high-polymer film in a closed container, adding a hydrazine hydrate solution or a hydrazine hydrate-ammonia water mixed solution around the graphene oxide high-polymer film, and performing steam reduction through heating to obtain the reduced graphene oxide high-polymer composite film. The steam reduced graphene oxide conductive high-polymer composite film is favorable in electric conductivity; the preparation method is simple; on the basis of high polymers, the obtained composite material is also conductive and has a special sensing function; and the strain resistance curve of the composite material is changed obviously. The electric conductivity and the sensing property greatly improve the application of the composite film in the aspect of intelligent materials.

Description

technical field [0001] The invention belongs to the field of polymer materials and conductive nanomaterials, in particular to a steam-reduced graphene oxide conductive polymer composite film, its preparation method and application. Background technique [0002] After the single-layer graphene was extracted in 2004, it has attracted the attention and research of many researchers in the world due to its unique properties. Graphene is a regular hexagonal grid structure of a single layer of atoms in graphite. It has a unique two-dimensional crystal structure that other materials do not have. Due to its unique two-dimensional crystal structure, graphene has high strength, high conductivity and good Properties such as heat transfer. Because graphene has so many excellent properties, it has a very wide range of applications. [0003] The excellent performance of graphene has attracted many researchers to start research on graphene. Because graphene is a single layer of atoms in g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184H01B5/14H01B13/00
CPCH01B13/0026C01B2204/22H01B5/14
Inventor 祝振强罗洪盛周兴东王华权易国斌王卓莹唐梓正
Owner GUANGDONG UNIV OF TECH
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