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Method for preparing polyacrylonitrile/graphene composite material

A polyacrylonitrile and composite material technology, which is applied in the field of composite material preparation, can solve problems such as the stability of the composite solution that is not mentioned, and achieve the effects of good industrial application prospects, low cost, and green and non-toxic operation process.

Active Publication Date: 2013-11-27
安徽百特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent with the application number 201110450967.6 reported a method of compounding graphene suspension and polyacrylonitrile solution by blending, and spinning to prepare carbon fibers. The report did not mention the stability of the composite solution

Method used

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  • Method for preparing polyacrylonitrile/graphene composite material
  • Method for preparing polyacrylonitrile/graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) 1 g of graphene was added to 20 ml of 50% sodium thiocyanate aqueous solution, and the mixture was stirred for 1 h to form a graphene dispersion.

[0034] (2) Add 1 g of polyacrylonitrile to 20 ml of 50% sodium thiocyanate aqueous solution, heat to 80 °C, stir for 2 h, and then ultrasonicate for 30 min to obtain a polyacrylonitrile solution.

[0035] (3) After mixing the graphene solution and the polyacrylonitrile solution, 100 mg of dibenzoyl peroxide was added and stirred for 30 min to obtain a polyacrylonitrile / graphene mixed solution.

[0036] (4) The mixed solution obtained in step (3) was sonicated by a 500 W, 20 KHz probe for 2 h to obtain a polyacrylonitrile / graphene composite solution.

[0037] The composite solution prepared by the above method is a stable sol, showing good fluidity. After standing for two months, no obvious precipitation occurred. Transmission electron microscopy showed that the thickness of the polyacrylonitrile / graphene sheet in the m...

Embodiment 2

[0039] (1) 1 g of graphene was added to 20 ml of NMP solution, and the mixture was stirred for 1 h to form a graphene dispersion.

[0040](2) Add 1 g of polyacrylonitrile to 20 ml of NMP solution, heat to 80 °C, stir for 2 h and then ultrasonicate for 30 min to obtain a polyacrylonitrile solution.

[0041] (3) After mixing the graphene solution and the polyacrylonitrile solution, 100 mg of dibenzoyl peroxide was added and stirred for 30 min to obtain a polyacrylonitrile / graphene mixed solution.

[0042] (4) The mixed solution obtained in step (3) was sonicated by a 500 W, 20 KHz probe for 2 h to obtain a polyacrylonitrile / graphene composite solution.

Embodiment 3

[0044] (1) Add 1 g of graphene to 20 ml of 50% sodium thiocyanate aqueous solution, and stir the mixture for 1 h to form graphene

[0045] Dispersions.

[0046] (2) Add 2 g of polyacrylonitrile to 20 ml of 50% sodium thiocyanate aqueous solution, heat to 80 °C, stir for 2 h, and then ultrasonicate for 30 min to obtain a polyacrylonitrile solution.

[0047] (3) After mixing the graphene solution and the polyacrylonitrile solution, 100 mg of dibenzoyl peroxide was added and stirred for 30 min to obtain a polyacrylonitrile / graphene mixed solution.

[0048] (4) The mixed solution obtained in step (3) was sonicated by a 500 W, 20 KHz probe for 2 h to obtain a polyacrylonitrile / graphene composite solution.

[0049] The composite solution prepared by the above method is a stable sol, showing good fluidity. After standing for two months, no obvious precipitation occurred. Transmission electron microscopy showed that the thickness of the polyacrylonitrile / graphene sheet in the mixed...

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Abstract

The invention belongs to the technical field of composite material preparation, and in particular relates to a method for preparing a polyacrylonitrile / graphene compound. The polyacrylonitrile / graphene compound prepared by the method is formed by combining polyacrylonitrile with a graphene lamella by one or two modes in covalent bond and physical adsorption, and a polyacrylonitrile / graphene suspension liquid prepared by the method is excellent in disperse stability, can be directly applied to preparation of coating, fiber and polymer composite materials. The method disclosed by the invention is simple and effective in process, and can be used for realizing environmentally-friendly large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and specifically relates to a method for preparing a polyacrylonitrile / graphene composite. One or two ways of combining with graphene sheets, and the composite solution can exist stably for a long time. Background technique [0002] Graphene is an important carbon-based material, which is composed of carbon atoms with sp 2 The single-layer two-dimensional structure formed by hybrid connection is also the thinnest two-dimensional material discovered by humans. Because graphene itself has a stable conjugated electron system, it can exhibit many excellent physical properties. For example: the strength of graphene is more than 100 times that of steel, reaching 130 GPa, which is the strongest material obtained so far; graphene has the highest known carrier mobility, which is 1.5×10 4 cm 2 V -1 S -1 ; The thermal conductivity of graphene is 5×10 3 w -1 K -1 , 3 times t...

Claims

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Application Information

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IPC IPC(8): C08L33/20C08K3/04
Inventor 卢红斌董雷
Owner 安徽百特新材料科技有限公司
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