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Superhydrophobic coating prepared by using graphene three-dimensional aggregates and its synthesis method and application

A super-hydrophobic coating, graphene technology, applied in the coating, paper coating, water repellent addition and other directions, can solve the problems of poor tolerance, no universality, complex construction method, etc., and the method is simple The effect of opposite sex, wide application and wide application

Active Publication Date: 2019-03-29
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the construction of superhydrophobic materials has been studied for a long time, the above methods have some disadvantages
For example, the construction method is complicated, not universal, and it has poor tolerance to various corrosive conditions such as acid and alkali.

Method used

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  • Superhydrophobic coating prepared by using graphene three-dimensional aggregates and its synthesis method and application
  • Superhydrophobic coating prepared by using graphene three-dimensional aggregates and its synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Grind the three-dimensional graphene aggregates, mix its powder, Nafion solution, and water to obtain a uniformly mixed coating, and apply it to the surface of the glass material to convert it into a super-hydrophobic surface.

[0021] Such as figure 1 As shown, the coating obtained by the present invention is a black uniform and stable dispersion.

[0022] Such as figure 2 As shown, the surfaces obtained after coating (glass, printing paper, nickel mesh), although the substrates are different, they are all superhydrophobic surfaces, and the contact angles are all greater than 150°.

Embodiment 2

[0024] Grind the three-dimensional graphene aggregates, mix its powder, Nafion solution, and ethanol to obtain a uniformly mixed coating, and apply it to the surface of the glass material to convert it into a super-hydrophobic surface.

Embodiment 3

[0026] Grind the three-dimensional graphene aggregates, mix its powder, inorganic resin solution, and ethanol to obtain a uniformly mixed coating, and apply it to the surface of the glass material to convert it into a super-hydrophobic surface.

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Abstract

The invention relates to a superhydrophobic coating prepared by utilizing a graphene three-dimensional aggregate as well as a synthesis method and application thereof. Black powder obtained by grinding the graphene three-dimensional aggregate, a binder and a solvent are mixed to obtain a dispersion which is uniformly dispersed; different bases (including but not limited to glass, printing paper, a nickel screen, an iron sheet, silver paper and a steel plate) are coated with the dispersion, so that these hydrophilic surfaces are completely converted into superhydrophobic surfaces. Compared with the prior art, the superhydrophobic coating is simple in preparation process and high in applicability, and can be used for converting surfaces with different roughness degrees into the superhydrophobic surfaces. Moreover, the preparation process is green and environment-friendly; no any toxic and side products are generated.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, and in particular relates to a superhydrophobic coating prepared by using graphene three-dimensional aggregates to convert different surfaces (including but not limited to glass, printing paper, nickel mesh, iron sheet, tin foil paper, steel plate) Synthetic methods for hydrophobic surfaces. Background technique [0002] Superhydrophobic materials, that is, materials whose surface has a contact angle with water greater than 150°. The phenomenon of superhydrophobicity can be seen everywhere in nature, and it is formed during the process of biological evolution, such as the surface of lotus leaves, the legs of water striders and flies, etc. Due to its special properties, superhydrophobic materials have broad application prospects in many aspects, such as self-cleaning coatings for ships, self-cleaning windshields, and oil-water separation membranes. [0003] There are generally two methods ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/61C09D201/04D21H21/16D21H19/12D21H19/14C03C17/00
CPCC03C17/009C03C2217/445C03C2217/475C08K3/04C09D1/00C09D7/61C09D201/04D21H19/12D21H19/14D21H21/16
Inventor 李新昊吕利冰柯文瑜张兵王梦影赵数煜陈接胜
Owner SHANGHAI JIAOTONG UNIV