Preparation method of magnetic graphene composite film

A magnetic graphene and composite film technology, applied in metal material coating process, coating, gaseous chemical plating and other directions, can solve the problems of reduced mechanical strength of materials, cracks and other problems, and achieves no polymer residue, good quality, good safety effect

Active Publication Date: 2016-12-07
重庆锦添翼新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention does not use other auxiliary transfer substances, does not introduce new impurities to contaminate or destroy the structure of graphene, and is easy to operate and time-saving. However, the polycrystalline characteristics of graphene easily lead to cracks and reduce the mechanical strength of the material.

Method used

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  • Preparation method of magnetic graphene composite film

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Experimental program
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Effect test

Embodiment 1

[0031] The concrete steps of a kind of preparation method of magnetic graphene composite film are as follows:

[0032] 1) Loaded carbon nanotubes

[0033]Put 9mg of F-127 into 10ml of deionized water, stir evenly to obtain a solution A with a concentration of F-127 of 0.088mol / L; add 7.2mg of SWCNTs to solution A, and disperse evenly in an ice bath by ultrasonic A mixed solution B with a concentration of SWCNTs of 0.06 mol / L was obtained, and the mixed solution B was spin-coated on a copper foil to obtain a copper foil C evenly loaded with SWCNTs. Among them, the ultrasonic power is 80W, the ultrasonic time is 30min, and the load of single-walled carbon nanotubes on the copper foil C is 7mg / cm 2 .

[0034] 2) In situ toughened graphene prepared by SWCNTs by chemical vapor deposition (CVD)

[0035] In the Ar atmosphere, place the copper foil C described in step 1) in the constant temperature zone of the CVD furnace, and then close the Ar. Vacuum down to -0.1MPa, and continu...

Embodiment 2

[0043] A kind of preparation method of magnetic graphene composite film, with embodiment 1, wherein: in the 1st) step, 20.9mgSDBS is put into 60ml deionized water, after stirring, obtain the solution that the amount concentration of SDBS substance is 0.001mol / L A; Add 72mg DWCNTs into solution A, and disperse evenly in an ice bath with 65W ultrasonic wave for 45min to obtain a mixed solution B with a concentration of DWCNTs of 0.1mol / L, and spin-coat the mixed solution B on copper foil to obtain Loading DWCNTs is 10mg / cm 2 The copper foil C.

[0044] In step 2), Ar is turned on, the copper foil C described in step 1) is placed in the constant temperature zone of the CVD furnace, and then Ar is turned off. Open H after vacuuming 2 , at 400sccm H 2 Heat reduction at 1050°C for 25min, then open CH 4 , at 400sccm H 2 and 10sccmCH 4 The chemical vapor phase growth was carried out for 10 min under the mixed gas atmosphere. Finally, the copper foil was quickly removed from the...

Embodiment 3

[0048] A kind of preparation method of magnetic graphene composite film, with embodiment 1, wherein: in the 1st) step, 28.8mg SDS is put into 10ml deionized water, after stirring, the amount concentration that obtains SDS substance is 0.01mol / L Solution A: Add 3.6 mg of SWCNTs to solution A, and disperse evenly in an ice bath with 30W ultrasonic for 60 minutes to obtain a mixed solution B with a concentration of SWCNTs of 0.03 mol / L, and spray the mixed solution B on the copper foil to obtain Loading SWCNTs is 0.4mg / cm 2 The copper foil C.

[0049] In step 2), Ar is turned on, the copper foil C described in step 1) is placed in the constant temperature zone of the CVD furnace, and then Ar is turned off. Open H after vacuuming 2 , at 350sccm H 2 Heat reduction at 850°C for 30min, then open CH 4 , at 350sccm H 2 and 15sccmCH 4 The chemical vapor phase growth was carried out for 55 minutes under the mixed gas atmosphere. Finally, the copper foil was quickly removed from th...

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Abstract

The invention provides a preparation method of a magnetic graphene composite film. According to the preparation method, a two-step chemical vapor deposition method is adopted to enable nano ferromagnetic metal particles covered with a carbon nano onion to grow on the surface of a carbon nano tube and graphene composite film. The graphene composite film can be transferred to a target substrate without the assistance of polymer during the transferring process, and has the characteristics of strong magnetism, high optical transparency, high hole/electronic mobility and the like. In addition, the ferromagnetic metal particles are covered by a carbon nano onion outer shell so that oxidization, acidification, falling and the like of the nano ferromagnetic metal particles can be avoided, and the graphene composite film has high strength and good stability. According to the preparation method, the two-step chemical vapor deposition method can be adopted to prepare and obtain the magnetic graphene composite film in macroscopic quantity; the technological process is simple, the cost is low, mass production is facilitated, and the magnetic graphene composite film can be widely applied to graphene spin-electron devices, electromagnetic wave absorption materials, flexible graphene film electronic devices and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterials, specifically relates to the technical field of carbon nanomaterials, and more specifically relates to a preparation method of a magnetic graphene composite film. Background technique [0002] Graphene is the thinnest film material known so far. It has good flexibility, excellent optical and electrical properties, and has great application potential in the fields of microelectronics, new materials, and medicine. At present, chemical vapor deposition (CVD) is mainly used in industrial production. By heating at high temperature, the gas containing carbon source (methane, ethylene, etc.) etc.) to generate a large area (>1mm) on the surface 2 ) single-layer graphene film and transferred to other substrates with the assistance of polymer coatings, this method is considered to be the most promising synthetic route. However, the polymer coating cannot be completely removed after transfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/26C23C16/01
CPCC23C16/01C23C16/26
Inventor 李新禄粟泽龙赵奚誉赵昱颉张艳艳张欣琳王荣华
Owner 重庆锦添翼新能源科技有限公司
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