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Preparation method and application of graphene modified zinc powder

A graphene modification and graphene technology, which is applied in transportation and packaging, metal processing equipment, coatings, etc., can solve the problems of curling and wrinkles, graphene is easy to agglomerate, and is difficult to open, so as to solve the problem of dispersion, uniform distribution, The effect of reducing wrinkles

Inactive Publication Date: 2017-10-03
SHANDONG OBO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in practical applications, there are still many problems and restrictive factors in graphene. The easy aggregation of graphene is a major obstacle restricting the research and application of graphene.
Due to the strong van der Waals interaction between graphene, it cannot be stably dispersed in the solvent, and it is easy to reunite after dispersion and difficult to open.
According to literature reports, a large number of studies have improved the dispersion effect of graphene by adding different types of dispersants or modification methods, but the uniform dispersion of graphene cannot be achieved, and additional impurities will be introduced, which will have a negative impact on subsequent production. And the increase of processing cost, and when graphene is mixed with other materials, it is also prone to curling and wrinkling, which will directly affect the role of graphene composite materials in subsequent fields
[0005] Therefore, how to find a method that can evenly disperse graphene and solve the problem that graphene is easy to agglomerate has become an important problem to be solved urgently for graphene manufacturers and downstream application fields of graphene.

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  • Preparation method and application of graphene modified zinc powder
  • Preparation method and application of graphene modified zinc powder
  • Preparation method and application of graphene modified zinc powder

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preparation example Construction

[0040] The invention provides a kind of preparation method of graphene modified zinc powder, it is characterized in that, comprises the following steps:

[0041] A) After the graphene solution and the zinc powder are uniformly mixed, a mixture is obtained;

[0042] B) After the mixture obtained in the above steps is subjected to rotary evaporation, the modified zinc powder with graphene uniformly dispersed on the surface is obtained.

[0043] The present invention has no particular limitation on the specific appearance of the zinc powder, the appearance of the zinc powder well known to those skilled in the art can be used, and those skilled in the art can select and adjust according to actual production conditions, product requirements and quality requirements. The zinc powder in the invention preferably includes one or more of flake zinc powder, spherical zinc powder and rod zinc powder, more preferably flake zinc powder, spherical zinc powder or rod zinc powder.

[0044] Th...

Embodiment 1

[0076] 1) Take a certain amount of 0.5% graphene oxide (CN 106115669A) aqueous solution, and ultrasonically stir for 3 hours;

[0077] 2) Slowly add 500g flake-shaped zinc powder into the graphene solution obtained in step 1) under mechanical stirring according to the ratio of 0.5%, and continue stirring for 30min;

[0078] 3) Add the mixed solution obtained in step 2) into the rotary evaporator;

[0079] 4) Control the degree of vacuum to 0.09Mpa, the temperature of the water bath to 80°C, and the rotation speed to 60RPM, and continue until the material is in a dry state to obtain zinc powder with graphene evenly dispersed on the surface, that is, graphene-coated particles.

[0080] 5) Embedding and slicing techniques are adopted for the prepared product.

[0081] The product prepared in Example 1 of the present invention was characterized and analyzed by a field emission scanning electron microscope.

[0082] see figure 1 , figure 1 FESEM microscopic topography diagram o...

Embodiment 2

[0084] 1) Take 1000g content of 0.3% modified graphene ethanol solution, and ultrasonically stir for 3h;

[0085] 2) Slowly add 500g of spherical zinc powder into the graphene solution obtained in step 1) under mechanical stirring according to the proportion of 0.5%, and keep stirring for 30min;

[0086] 3) Add the mixed solution obtained in step 2) into the rotary evaporator;

[0087] 4) Control the degree of vacuum to 0.09Mpa, the temperature of the water bath to 60°C, and the rotation speed to 60RPM, and continue until the material is in a dry state to obtain zinc powder with graphene evenly dispersed on the surface, that is, graphene-coated particles.

[0088] Raman characterization analysis was performed on the product prepared in Example 2 of the present invention.

[0089] see figure 2 , figure 2 Raman spectrum of the modified spherical zinc powder prepared in Example 1 of the present invention.

[0090] Depend on figure 2 The Raman spectrum in can clearly disti...

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Abstract

The invention provides a preparation method for graphene modified zinc powder. The preparation method comprises the following steps of: firstly, uniformly mixing a graphene solution with zinc powder to obtain a mixture; and performing rotary evaporation on the mixture obtained in the last step to obtain modified zinc powder, surface of which is uniformly dispersed with graphene. The preparation method adopts a rotary evaporation treatment way to uniformly disperse and package graphene onto the surface of the zinc powder, so that the zinc powder which can be uniformly coated with graphene, namely modified zinc powder which is uniformly dispersed with graphene materials, is obtained. The preparation method radically solves the defect that graphene materials are not uniformly mixed in a solution, and can ensure the graphene materials to uniformly disperse; and moreover, graphene is coated on the surface of zinc powder, so that a spreading state of graphene can be guaranteed to reduce foldes and bring performances of the graphene into play better, and therefore, treated zinc powder is added into practical application, and excellent performances of the zinc powder are guaranteed to be brought into play perfectly.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and relates to a preparation method of graphene-modified zinc powder, in particular to a method for dispersing graphene materials on the surface of zinc powder. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms with sp2 hybrid orbitals forming a hexagonal honeycomb lattice, a two-dimensional material with a thickness of only one carbon atom. As a two-dimensional crystal composed of carbon atoms with only one layer of atomic thickness, it is the thinnest material and the strongest material currently in the application field, and its fracture strength is 200 times higher than that of steel, and it is also very good Excellent elasticity, the stretching range can reach 20% of its own size; at the same time, graphene has a huge theoretical specific surface area, stable physical a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02C09D7/12C09D5/10C09D163/00
CPCC09D163/00C09D5/106B22F1/16
Inventor 刘海波张在忠赵永彬袁琪琛
Owner SHANDONG OBO NEW MATERIAL CO LTD