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Graphene/white carbon black nanometer composite material and preparation method thereof

A technology of graphene-based materials and composite materials, which is applied in the field of graphene composite materials, can solve the problems of graphene oxide sheets, such as curling and folding, poor dispersion, and uneven compounding, so as to suppress self-agglomeration effects, enhance dispersion, and improve The effect of homogeneity and stability

Inactive Publication Date: 2020-08-07
SHANDONG OBO NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In the prior art, there are successively reports on the related documents of mixing graphene and white carbon black to obtain composite fillers, in which the graphene-based materials and white carbon black are mainly solution blended and mechanically blended, but the above-mentioned poor dispersion still exists. question
Among them, there are also reports in the literature that various modifiers or modification methods are used to further improve, such as the reaction of the solid spray silane coupling agent after graphene oxide and white carbon black are mixed in the patent CN105368097A, although It can partially alleviate the dispersion problem of the two, but there are still problems such as inhomogeneous recombination and curling and folding of graphene oxide sheets.

Method used

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  • Graphene/white carbon black nanometer composite material and preparation method thereof
  • Graphene/white carbon black nanometer composite material and preparation method thereof
  • Graphene/white carbon black nanometer composite material and preparation method thereof

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preparation example Construction

[0080] The present invention also provides a kind of preparation method of graphene / white carbon black composite material, comprises the following steps:

[0081] 1) mixing the graphene oxide aqueous dispersion with a silane coupling agent, and performing a grafting reaction to obtain a reaction system;

[0082] 2) adding white carbon black to the reaction system obtained in the above steps and mixing again, and performing grafting reaction again to obtain a graphene / white carbon black composite material.

[0083] The present invention is to the selection, composition and structure of the material in the above-mentioned preparation method, and corresponding optimal principle, and the selection, composition and structure of the material in the aforementioned graphene / silica composite material, and corresponding optimal principle all preferably can Correspondingly, details are not repeated here.

[0084] In the present invention, the graphene oxide water dispersion liquid and t...

Embodiment 1

[0128] 1) Weigh 55g of graphene oxide dispersion with a concentration of 0.181%, add 228g of high-purity water, add acids such as glacial acetic acid or hydrochloric acid, adjust the pH to 3.5-4.5, and disperse with ultrasonic stirring for 1 hour.

[0129] 2) Weigh 2g of silane coupling agent Si69 and dissolve it in 50g of absolute ethanol; add the Si69 / ethanol dispersion liquid to the graphene oxide dispersion liquid dropwise, and disperse with ultrasonic stirring for 1h;

[0130] 3) Put the silane coupling agent / graphene oxide dispersion in an oil bath, raise the temperature to 70°C, and pre-react for 2 hours;

[0131] 4) Weigh 20g of white carbon black, add 200g of pure water, and ultrasonically stir and disperse for 1h to obtain a nanoscale aqueous dispersion of white carbon black;

[0132] 5) adding the silica aqueous dispersion to the pretreated silane coupling agent / graphene oxide dispersion obtained in step 3), and ultrasonically stirring and dispersing for 1 h;

[01...

Embodiment 2

[0143] 1) Weigh 55g of graphene oxide dispersion with a concentration of 0.181%, add 228g of high-purity water, add acids such as glacial acetic acid or hydrochloric acid, adjust the pH to 3.5-4.5, and disperse with ultrasonic stirring for 1 hour.

[0144] 2) Weigh 2g of silane coupling agent Si747 and dissolve it in 50g of absolute ethanol; add the Si747 / ethanol dispersion liquid to the graphene oxide dispersion liquid dropwise, and disperse with ultrasonic stirring for 1h;

[0145] 3) Put the silane coupling agent / graphene oxide dispersion in an oil bath, raise the temperature to 70°C, and pre-react for 2 hours;

[0146] 4) Weigh 20g of white carbon black, add 200g of pure water, and ultrasonically stir and disperse for 1h to obtain a nanoscale aqueous dispersion of white carbon black;

[0147] 5) adding the silica aqueous dispersion to the pretreated silane coupling agent / graphene oxide dispersion obtained in step 3), and ultrasonically stirring and dispersing for 1 h;

[...

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Abstract

The invention provides a graphene / white carbon black composite material. The graphene / white carbon black composite material comprises a graphene material and white carbon black, wherein the white carbon black is grafted on lamellas of the graphene material through chemical bonds. The graphene / silane coupling agent / white carbon black composite material with a novel structure is obtained by bondingthe graphene material and the white carbon black through chemical bonds. In the composite material provided by the invention, the graphene material and the white carbon black are interspersed, mutualagglomeration can be inhibited, and white carbon black nanoparticles are uniformly compounded and grafted on the surfaces of the lamellas of the graphene material, so the graphene material can keep abasic lamellar structure and maintains good single-layer dispersity in the composite material, and the material is a nano-scale highly-dispersed material. Meanwhile, the white carbon black on the surface of the graphene can improve the rigidity of the graphene lamellas, prevent the graphene from curling and folding due to high-temperature shearing in a rubber mixing process and improve the dispersity of the graphene in a rubber matrix.

Description

technical field [0001] The invention belongs to the technical field of graphene composite materials, and relates to a graphene / white carbon black composite material, a preparation method thereof, and a rubber composition, in particular to a graphene / white carbon black nanocomposite material, a preparation method thereof, and a rubber composition thing. 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. Because graphene has many excellent physical and chemical properties, it is widely used in energy storage materials, environmental engineering, and sensitive sensing. It is called "black gold" or "king of new materials", and has broad potential application prospects. At present, it has become the focus of attention and research hotsp...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K9/02C08K3/04C08K3/36C08L21/00
CPCC08K3/36C08K9/02C08K9/04C08K9/06C08K3/042C08L21/00
Inventor 李守杰赵永彬赵新新马立军
Owner SHANDONG OBO NEW MATERIAL CO LTD
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