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Graphene aluminum alloy and preparation method thereof

A technology of graphene and aluminum alloy, which is applied in the field of graphene aluminum alloy and its preparation, can solve the problems of uneven product particles and easy agglomeration of graphene, and achieve the effect of uniform particles, good performance and high density

Inactive Publication Date: 2020-08-04
HAIKE GRP RES INST OF INNOVATION & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to overcome the problem that graphene is easy to agglomerate in the existing graphene composite material preparation process, the prepared product particles are not uniform, and secondary crushing is required. A graphene aluminum alloy and its preparation method that can effectively reduce graphene agglomeration, uniform product particles, high density, and good performance are proposed

Method used

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  • Graphene aluminum alloy and preparation method thereof
  • Graphene aluminum alloy and preparation method thereof
  • Graphene aluminum alloy and preparation method thereof

Examples

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preparation example Construction

[0022] The invention provides a method for preparing a graphene aluminum alloy, including coating, drying and sintering. The coating includes: placing aluminum alloy powder particles in a vibrating fluidized bed, starting stirring, and making the aluminum alloy The powder particles are in an irregular motion state, and the graphene solution is added to the aluminum alloy powder particles in an irregular motion state by using an automatic rotating spray gun at a constant speed, and the temperature in the vibrating fluidized bed is 70-120°C , the vibrating fluidized bed is connected with a ventilation device. Aluminum matrix composites have good mechanical properties and high temperature properties. Currently, their reinforcements are mainly divided into two types: particles and fibers. Adding graphene as a reinforcement to aluminum alloys is an important breakthrough in improving the performance of aluminum matrix composites. However, the existing graphene-reinforced aluminum ...

Embodiment 1

[0034] (1) Take 1000g of aluminum alloy powder particles, place them in a vibrating fluidized bed, start stirring, so that the powder is in an irregular state of motion;

[0035] (2) Get a certain amount of 0.1%wt content of graphene solution (solvent is water) and place it in the automatic rotary spray gun, turn on the rotary automatic rotary spray gun, control the flow rate to be 10ml / min, and add it to the material in step 1 at a constant speed;

[0036] (3) During the vibration process, the temperature of the fluidized bed is maintained at 110°C, so that the solvent in the graphene entering the fluidized bed can be kept in an evaporating state, and the external ventilation device is opened to continuously extract the steam;

[0037] (4) After steps 1-3 continue for 30 minutes, stop adding graphene, increase ventilation, and gradually reduce vibration frequency until the powder is dry;

[0038] (5) Macroscopic analysis, the aluminum alloy powder after coating is obviously d...

Embodiment 2

[0041] The preparation method of the graphene aluminum alloy is the same as that of Example 1, except that the graphene content in the graphene solution is 0.15%wt.

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Abstract

The invention discloses a graphene aluminum alloy and a preparation method thereof, and belongs to the technical field of graphene composite materials. According to the technical scheme, the method comprises the steps of coating, drying and sintering, the coating comprises the steps that aluminum alloy powder particles are placed in a vibrated fluidized bed, stirring is started to enable the aluminum alloy powder particles to be in an irregular motion state, an automatic rotating spray gun is adopted to add a graphene solution into the aluminum alloy powder particles in the irregular motion state at a constant speed, the temperature in the vibrated fluidized bed is 70-120 DEG C, and the vibrated fluidized bed is connected with a ventilation device. The preparation method solves the problems of easy agglomeration of graphene, non-uniform particles of the prepared product and need of secondary crushing in the existing preparation process of the graphene composite material, and has the characteristics of effective reduction of graphene agglomeration, uniform particles of the product, high density and good performance.

Description

technical field [0001] The invention belongs to the technical field of graphene composite materials, in particular to a graphene aluminum alloy and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional material with a single-layer sheet structure composed of carbon atoms in sp2 hybrid orbitals. Due to its unique hexagonal honeycomb crystal structure and extremely high bond strength, its strength is as high as 1.01TPa. It is a structural steel 100 times that of Graphene, but the density is reduced by 80%. Graphene has become the strongest and hardest nanomaterial known in the world. Compared with other reinforcements, graphene has larger specific surface area and specific strength, so graphene is expected to become the most ideal reinforcement in future composite materials. However, there is a strong van der Waals interaction between graphene sheets, which prevents them from being stably dispersed in solvents, and it is easy to stack toget...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C1/10C22C21/00
CPCC22C1/0416C22C1/101C22C21/00
Inventor 鞠署元马俊青苗力孝刘振锋周景艳
Owner HAIKE GRP RES INST OF INNOVATION & TECH
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