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Solvent-free graphene/CNT (carbon nano tube)/Fe3O4 three-dimensional composite nano-fluid epoxy resin and preparation method thereof

A carbon nanotube, three-dimensional composite technology, applied in chemical instruments and methods, materials for heat exchange, etc., can solve the problems of difficulty in achieving monodispersion, affecting the effect of orientation and arrangement, and achieve the improvement of compatibility problems, remarkable modification effect, The effect of solving the problem of reunion

Inactive Publication Date: 2018-05-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the usual modification methods, nanoparticles such as carbon nanotubes and graphene are in a solid state, and it is difficult to achieve monodispersion in the resin material, which affects the alignment effect in the magnetic field

Method used

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  • Solvent-free graphene/CNT (carbon nano tube)/Fe3O4 three-dimensional composite nano-fluid epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Graphene / Carbon Nanotube / Fe 3 o 4 Preparation of the composite: 0.5 g of acidified carbon nanotubes and 0.5 g of graphene oxide were dissolved in 50 mL of methanol, and stirred ultrasonically at room temperature for 1 h to obtain a black suspension. 4.48g ferric chloride hexahydrate (FeCl 3 ·6H 2 O) dissolved in a certain amount of deionized water, added to the above black suspension, stirred ultrasonically at room temperature for 0.5h, and then 1.65g of ferrous chloride tetrahydrate (FeCl 2 4H 2 O) Dissolved in a certain amount of deionized water, added to the reaction solution, stirred ultrasonically at room temperature for 0.2 h, then added 30 g of ammonia water, stirred ultrasonically at room temperature for 1 h, and obtained a black suspension. After the reaction is completed, the above suspension is centrifuged, and the lower layer of precipitate is removed, and the precipitate is repeatedly washed with deionized water until neutral to obtain graphene / carbon n...

Embodiment 2

[0042] Graphene / Carbon Nanotube / Fe 3 o 4 Preparation of the composite: 0.5 g of acidified carbon nanotubes and 0.5 g of graphene oxide were dissolved in 50 mL of methanol, and stirred ultrasonically at room temperature for 1 h to obtain a black suspension. 2.24g ferric chloride hexahydrate (FeCl 3 ·6H 2 O) dissolved in a certain amount of deionized water, added to the above black suspension, stirred ultrasonically at room temperature for 0.5h, and then 0.83g ferrous chloride tetrahydrate (FeCl 2 4H 2 O) dissolved in a certain amount of deionized water, added to the reaction solution, stirred ultrasonically at room temperature for 0.2 h, then added 15 g of ammonia water, stirred ultrasonically at room temperature for 1 h, and obtained a black suspension. After the reaction is completed, the above suspension is centrifuged, and the lower layer of precipitate is removed, and the precipitate is repeatedly washed with deionized water until neutral to obtain graphene / carbon nano...

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Abstract

The invention relates to solvent-free graphene / CNT (carbon nano tube) / Fe3O4 three-dimensional composite nano-fluid oriented reinforced epoxy resin composite material. Firstly, graphene oxide is compounded with an acidized CNT by a pi-pi bond; then, Fe3O4 is prepared by a coprecipitation method; the Fe3O4 is grafted on the surfaces of the graphene oxide and the acidized CNT, so as to obtain a magnetic graphene / CNT / Fe3O4 three-dimensional composite nano-particle. The magnetic graphene / CNT / Fe3O4 three-dimensional composite nano-particle is taken as a core, and a two-layer structure of a silane coupling agent and a polyether amine low polymer is grafted by a covalent bond, so that an obtained product is in a liquid state under the condition of the near room temperature; the obtained product isadded in an epoxy resin curing agent for curing, so as to obtain the oriented reinforced epoxy resin composite material. A preparation method is simple and easy, so that the graphene and the CNT attached on the graphene can be directionally arrayed in the epoxy resin, and the mechanical property and the thermal property to the epoxy resin can be improved certainly.

Description

technical field [0001] The invention relates to a solvent-free graphene / carbon nanotube / Fe 3 o 4 The three-dimensional composite nanofluid directionally reinforced epoxy resin composite material can effectively improve the mechanical and thermal properties of the resin matrix, and can be applied to the performance modification of the resin matrix composite material. Background technique [0002] Graphene and carbon nanotubes can be used as nanofiller-reinforced resin materials. The combination of the two can combine the modification effects of sheet-like graphene and linear carbon nanotubes. If they can be aligned, their modification effect on polymers is more effective. But to make the two oriented, it must be under the action of a certain field. Both carbon nanotubes and graphene have a certain degree of conductivity, and an electric field can be applied to align them. However, since the resin needs to be heated when curing, applying an electric field in a hot environmen...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/04C08K7/24C08K3/22C08K9/06C08K9/04C09K5/14
Inventor 郑亚萍彭宁昆王田宇王钰登
Owner NORTHWESTERN POLYTECHNICAL UNIV
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