Preparation method of polymer/graphene/carbon nanometer tube composite material

A technology of carbon nanotubes and composite materials, which is applied in the field of preparation of conductive polymer composite materials, can solve problems such as the inability to effectively regulate the conductive pathway of graphene-carbon nanotubes, affect the comprehensive performance of composite materials, and affect the construction of conductive pathways. Overcoming the difficulty of forming a continuous conductive network, simple and easy processing technology, good operability and repeatability

Inactive Publication Date: 2017-11-07
广州中谱检测技术服务有限公司
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Problems solved by technology

However, since the graphene-carbon nanotube hybrids with a three-dimensional structure are not easy to disperse uniformly in the solution, the dispersion of the hybrids in the polymer prepared by the in-situ dispersion polymerization method is poor, which further affects the construction of the conductive path, so that the hybrids A large amount of addition will affect the comprehensive performanc

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  • Preparation method of polymer/graphene/carbon nanometer tube composite material
  • Preparation method of polymer/graphene/carbon nanometer tube composite material
  • Preparation method of polymer/graphene/carbon nanometer tube composite material

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Experimental program
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Effect test

Embodiment 1

[0028] (1) Preparation of graphene suspension: 0.5 g of graphite oxide was ultrasonically dispersed in water, and centrifuged to obtain a brown-yellow graphene oxide suspension; 140 μL of ammonia water and 20 μL of hydrazine hydrate were added for chemical reduction to prepare a graphene suspension.

[0029] (2) Preparation of polystyrene microspheres / graphene / carbon nanotube ternary hybrids: ultrasonically disperse 0.075g graphene, 0.1g carbon nanotubes and 6.0g polystyrene microspheres in an aqueous hydrochloric acid solution with pH=1.5 , respectively, to obtain a uniformly dispersed suspension. Mix the three suspensions evenly, and disperse them ultrasonically for 1 hour; adjust the mixed solution to pH=6 by adding 1mol / L sodium hydroxide solution dropwise, and the graphene and carbon nanotubes will be evenly coated on the polystyrene microspheres due to electrostatic adsorption. On the spherical surface, a polystyrene / graphene / carbon nanotube ternary hybrid was prepared. ...

Embodiment 2

[0033] (1) Preparation of graphene suspension: 0.5 g of graphite oxide was ultrasonically dispersed in water, and centrifuged to obtain a brown-yellow graphene oxide suspension; 140 μL of ammonia water and 20 μL of hydrazine hydrate were added for chemical reduction to prepare a graphene suspension.

[0034](2) Preparation of polystyrene microspheres / graphene / carbon nanotube ternary hybrids: ultrasonically disperse 0.1g graphene, 0.128g carbon nanotubes and 9.0g polystyrene microspheres in an aqueous hydrochloric acid solution with pH=2.0 , respectively, to obtain a uniformly dispersed suspension. Mix the three suspensions evenly and disperse them ultrasonically for 1.5 hours; adjust the mixed solution to pH=6 by adding 1mol / L sodium hydroxide solution dropwise, and graphene and carbon nanotubes will be evenly coated on polystyrene due to electrostatic adsorption On the surface of microspheres, polystyrene / graphene / carbon nanotube ternary hybrids were prepared.

[0035] (3) P...

Embodiment 3

[0038] (1) Preparation of graphene suspension: 0.5 g of graphite oxide was ultrasonically dispersed in water, and centrifuged to obtain a brown-yellow graphene oxide suspension; 140 μL of ammonia water and 20 μL of hydrazine hydrate were added for chemical reduction to prepare a graphene suspension.

[0039] (2) Preparation of polystyrene microspheres / graphene / carbon nanotube ternary hybrids: ultrasonically disperse 0.1g graphene, 0.125g carbon nanotubes and 10.0g polystyrene microspheres in an aqueous hydrochloric acid solution with pH=2.5 , respectively, to obtain a uniformly dispersed suspension. Mix the three suspensions evenly, and disperse them ultrasonically for 2.0 hours; adjust the mixed solution to pH=6 by adding 1mol / L sodium hydroxide solution dropwise, and graphene and carbon nanotubes will be uniformly coated on polystyrene due to electrostatic adsorption On the surface of microspheres, polystyrene / graphene / carbon nanotube ternary hybrids were prepared.

[0040]...

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Abstract

The invention discloses a preparation method of a polymer/graphene/carbon nanometer tube composite material. The method comprises the following steps of respectively performing preparation in an acid water solution under the ultrasonic effect to obtain uniformly dispersed polystyrene microspheres, graphene and carbon nanometer tube suspension solutions; then, uniformly mixing the three kinds of prepared suspension solutions; giving opposite charges to the three kinds of suspension solutions through regulating and controlling the pH value of the mixed solution. Through the static mutual effect, the graphene and the carbon nanometer tubes are uniformly coated on the surface of the polystyrene microspheres to obtain polystyrene/graphene/carbon nanometer tube three-ingredient hybrids; finally, a polystyrene composite material with a three-dimensional graphene-carbon nanometer tube hybrid network is obtained through a hot pressing forming process. The obtained polystyrene/graphene/carbon nanometer tube three-ingredient hybrids can mutually inhibit the respective agglomeration behaviors; the graphene and the carbon nanometer tubes are promoted to build the three-dimensional hybrid network in the polymer substrates; a great number of conductive paths are formed. Under the condition of low filling consumption, the excellent conduction performance of the composite material can be obviously realized.

Description

technical field [0001] The invention relates to a preparation method of a polymer / graphene / carbon nanotube composite material, in particular to a preparation method of a conductive polymer composite material based on a graphene-carbon nanotube network. Background technique [0002] Due to their excellent electrical, thermal, and mechanical properties, graphene and carbon nanotubes are widely used in high-strength composite materials, conductive and heat-conductive composite materials, electrodes, and electronic devices. As a new type of conductive filler, the synergistic enhancement of graphene and carbon nanotubes can be more conducive to the preparation of highly conductive polymer composites. However, due to its strong van der Waals force, graphene is prone to irreversible agglomeration and stacking, making it difficult to exert its excellent properties in polymers. At the same time, due to its large aspect ratio and specific surface area, carbon nanotubes are also prone...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08K3/04C08K7/24C08J3/215C09K5/14
CPCC08K3/04C08J3/215C08J2325/06C08K7/24C08K2201/001C08K2201/011C09K5/14C08L25/06
Inventor 占宏君管新兵吴龙梅何俊杰李凯杰陈文宁韩琪
Owner 广州中谱检测技术服务有限公司
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