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A kind of flexible graphene-based composite paper and preparation method thereof

A technology of flexible graphite and composite paper, applied in paper, papermaking, textiles and papermaking, etc., to achieve the effects of easy availability of raw materials, excellent mechanical properties, and simple process

Active Publication Date: 2018-04-03
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the thermal conductivity and flexibility of the existing graphene paper need to be further improved to meet the high-speed development requirements of high-power-density electronic components

Method used

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  • A kind of flexible graphene-based composite paper and preparation method thereof
  • A kind of flexible graphene-based composite paper and preparation method thereof
  • A kind of flexible graphene-based composite paper and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] a kind of like Figure 3-Figure 6 The flexible graphene-based composite paper of the present invention is shown, the flexible graphene-based composite paper includes a polymer fiber skeleton and a graphene matrix, the graphite structure of the flexible graphene-based composite paper has few defects, and the graphene matrix is ​​under a scanning electron microscope. The buckle structure forms an interpenetrating network with the polymer fiber skeleton, and the mass ratio of the graphene matrix to the polymer fiber skeleton is controlled at about 6:1. The thickness of the flexible graphene-based composite paper is controlled at 50 microns. The polymer fiber skeleton is mainly composed of artificially synthesized polyimide pulp fibers, and the fiber length is 3mm. The ratio I of the D peak intensity and the G peak intensity of the flexible graphene-based composite paper in the Raman spectrum D / I G The value is about 0.002.

[0035] The preparation method of the above-...

Embodiment 2

[0044] A flexible graphene-based composite paper of the present invention, the flexible graphene-based composite paper includes a polymer fiber skeleton and a graphene matrix, the graphite structure of the flexible graphene-based composite paper has few defects, and the graphene matrix is ​​under a scanning electron microscope The buckle structure forms an interpenetrating network with the polymer fiber skeleton, and the mass ratio of the graphene matrix to the polymer fiber skeleton is controlled at about 8:1. The thickness of the flexible graphene-based composite paper is controlled at 50 microns, and the polymer fiber skeleton is mainly composed of artificially synthesized aramid chopped fibers (p-phenylenediamine terephthalate fibers) with a length of 10 mm. The ratio I of the D peak intensity and the G peak intensity of the flexible graphene-based composite paper in the Raman spectrum D / I G The value is about 0.01.

[0045] The preparation method of the above-mentioned...

Embodiment 3

[0052] A flexible graphene-based composite paper of the present invention, the flexible graphene-based composite paper includes a polymer fiber skeleton and a graphene matrix, the graphite structure of the flexible graphene-based composite paper has few defects, and the graphene matrix is ​​under a scanning electron microscope The buckle structure forms an interpenetrating network with the polymer fiber skeleton, and the mass ratio of the graphene matrix to the polymer fiber skeleton is controlled at about 8:1. The thickness of the flexible graphene-based composite paper is controlled at 15 microns. The polymer fiber skeleton is mainly composed of artificially synthesized silk, and its length is about 10mm. The ratio I of the D peak intensity and the G peak intensity of the flexible graphene-based composite paper in the Raman spectrum D / I G The value is about 0.01.

[0053] The preparation method of the above-mentioned flexible graphene-based composite paper of the present...

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Abstract

A flexible graphite alkenyl composite paper comprises a macromolecular fiber framework and a graphene substrate, the specific value ID / IG value of D peak intensity and G peak intensity in a Raman spectrum of the flexible graphite alkenyl composite paper is smaller than or equal to 0.05. The graphene substrate and the macromolecular fiber framework form a hasp structure with mutually penetrated grids. A preparation method of the flexible graphite alkenyl composite paper comprises the steps that the prepared macromolecular fiber framework is put on a microfiltration membrane, an oxidized graphene dispersion solution is poured onto the macromolecular fiber framework to perform reduced pressure filtration, then a hydrogel block is subjected to liquid-phase volatilization and self-assembly to obtain oxidized graphene / macromolecular fiber composite paper, and then reduction and high-temperature induced graphitization are performed to obtain the product. The prepared flexible graphite alkenyl composite paper can be applied in the preparation of transverse radiators and shows more excellent mechanical properties, conductivity and heat conducting and dissipating properties.

Description

technical field [0001] The invention belongs to the field of high-performance special paper products, and specifically relates to a polymer fiber and graphene composite material and a preparation method thereof. Background technique [0002] Recent developments in technologies such as information, communication, and renewable energy storage require continuously high power densities of electronic and optoelectronic devices, so efficient heat dissipation of these devices has become a major issue. Efficient heat dissipation is a decisive factor in determining the performance and reliability of modern electronic, optoelectronic and photonic devices, especially for next-generation 3D integrated circuits and ultrafast high power density transistor devices. Due to the insufficient heat dissipation capacity of the basic device unit, which leads to the failure of its temperature control, some new thermal conductive materials, mainly including thermal interface materials and lateral h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H13/26D21H13/24D21H13/16D21H13/18D21H11/12D21H17/00D21H21/14
CPCD21H11/12D21H13/16D21H13/18D21H13/24D21H13/26D21H17/00D21H21/14
Inventor 杨军李艳花陈小华王进
Owner ZHUZHOU TIMES NEW MATERIALS TECH