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Graphene/polypropylene conductive nano composite material and preparation method thereof

A conductive composite material and conductive nanotechnology, which are applied in the field of graphene/polypropylene conductive nanocomposite materials and their preparation, can solve the problems of complex operation means and high conductive percolation threshold of the composite, and achieve cost reduction, promotion of dispersion, and electrical performance. good effect

Inactive Publication Date: 2013-08-07
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have prepared graphene / polypropylene conductive nanocomposites with better conductivity, they are not all perfect, such as complicated experimental operations, and the obtained composites have a higher conductive percolation threshold, etc.

Method used

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  • Graphene/polypropylene conductive nano composite material and preparation method thereof
  • Graphene/polypropylene conductive nano composite material and preparation method thereof
  • Graphene/polypropylene conductive nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1. preparation graphene content is the graphene / polypropylene conductive nanocomposite material of 1.0wt%

[0025] 0.01 g of graphene was dispersed in 1 ml of xylene, and ultrasonically dispersed in an ultrasonic processor at room temperature for 3 hours to obtain a graphene dispersion. 0.975g polypropylene and 0.015g maleic anhydride grafted polypropylene were added in 8ml xylene, mechanically stirred at 110°C, solution blended to form a continuous and uniform polymer solution. Add the above-mentioned graphene dispersion into the above-mentioned polymer solution, add 1ml of xylene, and control the concentration of the entire mixed system to be 1g / 10ml. Continue mechanical stirring for 4 hours under the premise of constant temperature, pour the above-mentioned mixture into 200ml of dehydrated ethanol while it is hot, filter the product and wash it with dehydrated ethanol for 3 times, after suction filtration, put the above-mentioned product in a 50°C oven Af...

Embodiment 2

[0026] Embodiment 2. preparation graphene content is the graphene / polypropylene conductive nanocomposite material of 1.3wt%

[0027] 0.013 g of graphene was dispersed in 1.5 ml of xylene, and ultrasonically dispersed in an ultrasonic processor at room temperature for 3 hours to obtain a graphene dispersion. The polypropylene of 0.9675g and the maleic anhydride grafted polypropylene of 0.0195g were added in 6.5ml xylene, and mechanical stirring and solution blending at 120° C. formed a continuous and uniform polymer solution. The above-mentioned graphene dispersion was added to the above-mentioned polymer solution, and 3ml of xylene was added to control the concentration of the entire mixed system to be about 0.91g / 10ml. Continue mechanical stirring for 4.5h under the premise of constant temperature, pour the above-mentioned mixture into 250ml of absolute ethanol while it is hot, filter the product and wash it with absolute ethanol for 3 times, after suction filtration, put the...

Embodiment 3

[0028] Embodiment 3. preparation graphene content is the graphene / polypropylene conductive nanocomposite material of 1.5wt%

[0029] 0.015 g of graphene was dispersed in 2 ml of xylene, and ultrasonically dispersed in an ultrasonic processor at room temperature for 4 hours to obtain a graphene dispersion. The polypropylene of 0.9625g and the maleic anhydride grafted polypropylene of 0.0225g were added in 6ml xylene, mechanically stirred at 125°C, solution blended to form a continuous and uniform polymer solution. The above-mentioned graphene dispersion was added to the above-mentioned polymer solution, and 4ml of xylene was added to control the concentration of the entire mixed system to be 0.83g / 10ml. Continue mechanical stirring for 5 hours under the premise of constant temperature, pour the above-mentioned mixture into 280ml of absolute ethanol while it is hot, filter the product and wash it with absolute ethanol for 3 times, and put the above-mentioned product in a 55°C ov...

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Abstract

The invention relates to a graphene / polypropylene conductive nano composite material and a preparation method thereof, belonging to the technical field of polymer nano composite materials. On the basis of 100 parts by mass, the graphene / polypropylene conductive nano composite material contains 92.5-97.5 parts by mass of polypropylene (as a base), 1-3 parts by mass of graphene (as a conductive filler) and 1.5-4.5 parts by mass of maleic anhydride grafted polypropylene (for promoting dispersion of the graphene); and the graphene / polypropylene conductive nano composite material is prepared by solution blending and hot pressing. A series of graphene / polypropylene conductive nano composite materials in different proportions can be obtained by changing the mass percent of the graphene in the composite system. The prepared graphene / polypropylene conductive nano composite material can be used in the fields of conductive materials, electromagnetic shielding materials, antistatic materials and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer nanocomposite materials, and in particular relates to a graphene / polypropylene conductive nanocomposite material and a preparation method thereof. Background technique [0002] Graphene was first discovered in 2004. K.S. Novoselov and A.K. Geim et al. prepared stable sheet-like graphene by micromechanical separation. Since then, in the last few years, the research on graphene has received comprehensive attention. Graphene is a two-dimensional structure formed by stacking a single layer of carbon atoms. It is hexagonal and honeycomb-shaped. It has a large specific surface area, excellent electrical, mechanical, and thermal properties, etc., which make graphene an ideal polymer. stuffing. However, the high surface energy of graphene makes it easy to agglomerate in polymer matrix and solvent, which has a negative impact on its performance. Therefore, in the process of preparing composites, solving ...

Claims

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Application Information

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IPC IPC(8): C08K3/04C08L51/06C08L23/12
Inventor 王贵宾刘畅王宇遥翟春熙杨丽龙孙德山宫克难
Owner JILIN UNIV
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