Graphene polymer pressure sensitive composite material and preparation method thereof

A technology of pressure-sensitive composite materials and polymers, which is applied in the field of graphene polymer pressure-sensitive composite materials and its preparation, can solve problems affecting performance, easy peeling, etc., and achieve durability problems, low cost, and simple process methods Effect

Inactive Publication Date: 2017-07-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene is covered in the polymer pore structure, and it is easy to peel off under pressure, which affects its performance

Method used

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  • Graphene polymer pressure sensitive composite material and preparation method thereof
  • Graphene polymer pressure sensitive composite material and preparation method thereof
  • Graphene polymer pressure sensitive composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Dissolve graphite oxide in water, stir for 30 minutes, and ultrasonicate for 2 hours to prepare a certain concentration of graphene oxide solution: the concentration range is 4 mg / ml;

[0033] (2) Take 50ml of graphene oxide solution, put it in a 100ml reaction kettle, and conduct a hydrothermal reaction at 160°C for 24h. Obtain a three-dimensional network graphene columnar body;

[0034] (3) 2-Chlorobutadiene (1.3) with a solids content of 29% was used. Place the graphene cylinders in a watch glass of suitable size. Add the polymer emulsion and let it soak in the polymer emulsion for 12h.

[0035] (4) Take out the composite material, and use a vacuum freeze dryer to carry out vacuum freeze-drying for 24 hours, and the vacuum degree is less than 0.09Pa to obtain a three-dimensional network graphene polymer composite material.

[0036] The scanning electron microscope picture of the graphene polymer composite material prepared by the present embodiment is as follo...

Embodiment 2

[0038] (1) Dissolve graphite oxide in water, stir for 30 minutes, and ultrasonicate for 2 hours to prepare a certain concentration of graphene oxide solution: the concentration range is 4 mg / ml;

[0039] (2) Take 50ml of graphene oxide solution, put it in a 100ml reaction kettle, and conduct a hydrothermal reaction at 160°C for 24h. Obtain a three-dimensional network graphene columnar body;

[0040] (3) 2-Chlorobutadiene (1.3) with a solids content of 58% was used. Place the graphene cylinders in a watch glass of suitable size. Add the polymer emulsion and let it soak in the polymer emulsion for 12h.

[0041] (4) Take out the composite material, and use a vacuum freeze dryer to carry out vacuum freeze-drying for 24 hours, and the vacuum degree is less than 0.09Pa to obtain a three-dimensional network graphene polymer composite material.

[0042] The stress-strain curve of the composite material in embodiment 2 is as Figure 4 It is shown that when the stress is 0-1.7kPa, t...

Embodiment 3

[0046] (1) Dissolve graphite oxide in water, stir for 30 minutes, and ultrasonicate for 2 hours to prepare a certain concentration of graphene oxide solution: the concentration range is 4 mg / ml;

[0047](2) Take 50ml of graphene oxide solution, put it in a 100ml reaction kettle, and conduct a hydrothermal reaction at 180°C for 24h. Obtain a three-dimensional network graphene columnar body;

[0048] (3) 2-Chlorobutadiene (1.3) with a solids content of 58% was used. Place the graphene cylinders in a watch glass of suitable size. Add the polymer emulsion and let it soak in the polymer emulsion for 12h.

[0049] (4) Take out the composite material, and use a vacuum freeze dryer to carry out vacuum freeze-drying for 24 hours, and the vacuum degree is less than 0.09Pa to obtain a three-dimensional network graphene polymer composite material.

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Abstract

The invention relates to a graphene polymer pressure sensitive composite material and a preparation method thereof. The preparation method comprises the following steps: reducing graphene oxide through a thermal recovery reaction to form three-dimensional network graphene, compounding the three-dimensional network graphene in polymer emulsion, and carrying out vacuum freeze drying to obtain the graphene polymer pressure sensitive composite material. Compared with the prior art, the preparation method provided by the invention has the advantages that the three-dimensional graphene is used as the skeleton, the polymer is coated on the surface of the skeleton for solving the dispersion problem and the durability problem of the composite material, the graphene network is used as a conductive template, the conductivity of the obtained composite material is obviously improved, and the composite material has excellent pressure sensitivity; and in addition, the whole method only comprises two steps, one is to prepare a graphene cross-linked network, and the other is to perform dipping compounding of the material, the types of the adopted reagents are few, the process method is simple, the cost is low, and industrial production expansion is easy to implement.

Description

technical field [0001] The invention relates to the technical field of graphene nanocomposite materials, in particular to a graphene polymer pressure-sensitive composite material and a preparation method thereof. Background technique [0002] Graphene is carbon atoms with sp 2 A two-dimensional honeycomb lattice structure in which bonds are closely arranged, which is only one carbon atomic layer thick. It is this unique structure that endows graphene with many excellent properties such as extremely high electrical conductivity and excellent mechanical properties. Three-dimensional graphene is a three-dimensional macroscopic structure stacked by two-dimensional graphene in a certain way. Its performance retains the unique properties of the two-dimensional structure, and at the same time it can obtain a large specific surface area and a controllable porous structure, which can effectively regulate its mechanical and electrical properties, and is conducive to the preparation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/04C08L47/00C08L25/14
CPCC08K3/04C08K2201/001C08L47/00C08L25/14
Inventor 张东尚玉
Owner TONGJI UNIV
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