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Preparation method and application of montmorillonite-graphene composite powder

A graphene composite and montmorillonite technology, applied in the field of preparation of montmorillonite-graphene composite powder, can solve the problems such as graphene and montmorillonite are not easily mixed with each other uniformly, graphene yield is low, and the process is complicated. , to achieve the effect of reducing binding force, high yield and simple process

Inactive Publication Date: 2016-12-21
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the preparation of this graphene-montmorillonite composite powder is that graphene and montmorillonite are not easy to achieve uniform mixing with each other
Moreover, the graphene prepared by this method has the disadvantages of low output, large pollution, complicated process, and long cycle.

Method used

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  • Preparation method and application of montmorillonite-graphene composite powder
  • Preparation method and application of montmorillonite-graphene composite powder
  • Preparation method and application of montmorillonite-graphene composite powder

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preparation example Construction

[0036] In the application of the montmorillonite-graphene composite powder in the embodiment of the present invention, the montmorillonite-graphene composite powder is used as a filler to prepare a polymer composite material, for example, the montmorillonite-graphene composite can be The powder is used to prepare montmorillonite-graphene / epoxy resin composite material, and the preparation method comprises the following steps: dispersing a certain amount of organically modified montmorillonite-graphene composite powder in a solvent, and Add epoxy resin and mix it evenly, then remove the solvent, add curing agent and accelerator to continue stirring and mixing, pour after removing the air bubbles in the mixture, and finally obtain montmorillonite-graphene / epoxy resin composite after curing Material. Certainly, the montmorillonite-graphene composite powder in the embodiment of the present invention can also be applied in the preparation process of other polymer composite material...

Embodiment 1

[0040] The preparation method of embodiment 1 of the present invention montmorillonite-graphene composite powder comprises the following steps:

[0041] Firstly, dissolve 0.4 g of crystal violet in 100 ml of deionized water, ultrasonicate for about 1 min to fully dissolve the crystal violet, then add 1 g of montmorillonite, stir at 25°C for at least 4 hours with a magnetic stirrer, then centrifuge and wash. Organic montmorillonite adsorbing crystal violet was obtained after drying at 60°C.

[0042]The above-mentioned montmorillonite adsorbed crystal violet was calcined at 600°C for 3 hours under the protection of nitrogen, and the crystal violet between the montmorillonite sheets was carbonized to form graphene, thereby obtaining a composite of montmorillonite-graphene interpenetrating Powder. figure 2 It is the XRD pattern of the montmorillonite-graphene composite powder of Example 1 obtained after the montmorillonite with interlayer adsorption of crystal violet is calcined...

Embodiment 2

[0056] The preparation method of embodiment 2 of the present invention montmorillonite-graphene composite powder comprises the following steps:

[0057] First, dissolve 0.8 g of methylene blue in 100 ml of deionized water, ultrasonically dissolve the methylene blue for about 1 min, then add 1 g of montmorillonite, stir at 25°C for at least 4 hours with a magnetic stirrer, and then centrifuge and wash, and place at 60°C The organic montmorillonite adsorbed methylene blue was obtained after drying under high temperature.

[0058] The montmorillonite adsorbed methylene blue was calcined at 600°C for 3 hours under the protection of argon, and the methylene blue between the montmorillonite sheets was carbonized to form graphene, thereby obtaining a composite powder of montmorillonite-graphene interpenetrating . image 3 It is the XRD pattern of the montmorillonite-graphene composite powder obtained after calcination of the montmorillonite interlayer adsorbing methylene blue in Exa...

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Abstract

The invention provides a preparation method and application of montmorillonite-graphene composite powder. The preparation method of the montmorillonite-graphene composite powder comprises the following steps: (1) letting montmorillonite adsorb an organic dye to be saturated, centrifuging and washing, and drying to obtain organic dye-adsorbed waste montmorillonite, wherein the mass ratio of montmorillonite to the organic dye is 1: (0.3-1); and (2) calcining the organic dye-adsorbed waste montmorillonite at 600-700 DEG C for 2-4 h under the inert atmosphere protection so as to obtain the montmorillonite-graphene composite powder. By using waste montmorillonite as a raw material, the montmorillonite-graphene composite powder with montmorillonite and graphene uniformly intercalated is prepared by a one-step method. After the montmorillonite-graphene composite powder is modified with a silane coupling agent, the modified product is used as a filling material to prepare a polymer composite material. Then, properties of the polymer composite material, such as tensile strength and impact strength, etc., are effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method and application of montmorillonite-graphene composite powder. Background technique [0002] In recent years, there have been reports on how to use graphene-montmorillonite composite powders to improve the properties of polymer materials, but in these reports, the Hummers method was first used to oxidize graphite to prepare graphene oxide, and then Graphene is prepared by reducing graphene oxide by a solvent method or a chemical method, and then the graphene and montmorillonite are mixed to prepare a composite powder. The disadvantage of the preparation of this graphene-montmorillonite composite powder is that graphene and montmorillonite are not easy to achieve uniform mixing with each other. Moreover, the graphene prepared by this method has the disadvantages of low output, large pollution, complex process, and long cycle....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K9/06C08K7/00C08K3/34C08K3/04C08L63/00C08J3/205
CPCC08J3/205C08J2363/00C08K3/04C08K3/346C08K7/00C08K9/06C08K9/12C08L63/00
Inventor 杨志红李生娟
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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