Flexible polymer-based graphene foam material and preparation method thereof

A graphene foam and flexible polymer technology, which is applied in the field of flexible polymer-based graphene foam materials and their preparation, can solve the problems of incompressible springback, fragile mechanical properties, and long time required to achieve high surface hydrophobicity, The effect of short preparation time and simple and easy-to-operate preparation method

Inactive Publication Date: 2013-08-21
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a flexible polymer-based graphene foam material to solve the technical problems of the graphene foam material in the prior art, which are small in volume, very fragile in mechanical properties, and incompressible rebound
[0006] Another object of the present invention is to provide a kind of preparation method of above-mentioned flexible polymer-based graphene foam material, to solve the need time in the prior art is long, energy consumption is big, equipment requires high technical problems

Method used

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  • Flexible polymer-based graphene foam material and preparation method thereof
  • Flexible polymer-based graphene foam material and preparation method thereof
  • Flexible polymer-based graphene foam material and preparation method thereof

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preparation example Construction

[0028] The preparation method of flexible polymer-based graphene foam material of the present invention mainly comprises following two steps:

[0029] (1) The polymer foam is soaked in the graphene oxide solution containing hydrazine hydrate by vacuum degassing method, and the volume of the polymer foam is the same as that of the graphene oxide solution;

[0030] (2) The above mixed solution was reacted at 60-90° C. for 5-15 hours, and then dehydrated, washed and dried to obtain a flexible polymer-based graphene foam composite material.

Embodiment 1

[0033] The preparation method of the polymer-based graphene foam material in the present embodiment is as follows:

[0034] (1) Disperse 2.5mg of graphene oxide in 50ml of aqueous solution, then add 0.05ml of hydrazine hydrate, stir to dissolve the graphene oxide, and soak the polymer foam in the prepared mixed solution by extrusion and vacuum degassing , the volume of the foam is roughly the same as the volume of the solution;

[0035] (2) The above mixed solution was reacted at 60°C for 15 hours, and then dehydrated, washed, and dried to obtain a flexible polymer-based graphene foam composite material.

[0036] In this embodiment, the weight percent content of graphene in the polymer-based graphene foam material is 0.1%, the volume conductivity is 0.001S / m, the surface water contact angle is 121.2°, and the compression deformation can reach 90%.

Embodiment 2

[0038] The preparation method of the polymer-based graphene foam material in the present embodiment is as follows:

[0039] (1) Disperse 12.5mg of graphene oxide in 50ml of aqueous solution, then add 0.25ml of hydrazine hydrate, stir to dissolve, and soak the polymer foam in the prepared mixed solution by extrusion and vacuum degassing. The volume is roughly the same as the volume of the solution;

[0040] (2) The above mixed solution was reacted at 70°C for 12 hours, and then dehydrated, washed, and dried to obtain a flexible polymer-based graphene foam composite material.

[0041] In this embodiment, the weight percent content of graphene in the polymer-based graphene foam material is 0.5%, the volume conductivity is 0.005S / m, the surface water contact angle is 123.4°, and the compression deformation can reach 90%.

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Abstract

The invention relates to the field of graphene foam composite materials, and in particular relates to a porous flexible polymer-based graphene foam material and a preparation method thereof. According to the flexible polymer-based graphene foam material provided by the invention, in the foam material, polymer foam accounts for 90-99.9wt%, and graphene accounts for 0.1-10wt%. Compared with the prior art, the volume of the flexible polymer-based graphene foam material provided by the invention can be prepared as required; and the flexible polymer-based graphene foam material has excellent compression and resilience mechanical properties, electrical conductivity and surface hydrophobicity.

Description

technical field [0001] The invention relates to the field of graphene foam composite materials, in particular to a porous flexible polymer-based graphene foam material and a preparation method thereof. Background technique [0002] Graphene is a carbonaceous material with a two-dimensional honeycomb lattice structure formed by a single layer of carbon atoms closely packed together. Although graphene is only one carbon atom thick and is the thinnest known material, it has many unique and fascinating intrinsic physical properties, such as high Young's modulus (1100GPa), thermal conductivity (5000W / mk), carrier mobility (2×10 5 cm 2 V -1 the s -1 ), high specific surface area and hydrophobicity. These superior properties and two-dimensional structure make graphene have a wide range of application prospects. One of the very important applications is the use of graphene to prepare porous flexible foam materials. This new material has a huge market demand in the fields of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/12C08K7/00C08K3/04
Inventor 吴超江平开钱荣吴新锋黄兴溢
Owner SHANGHAI JIAO TONG UNIV
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