Method for in-situ construction of superhydrophobic coating on copper alloy surface

A technology of super-hydrophobic coating and copper alloy, applied in the direction of metal material coating process, etc., can solve the problem that the invention has not been reported, and achieve the effect of strong binding force, easy realization and enhanced corrosion resistance.

Active Publication Date: 2022-01-07
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 3. The metal substrates for in-situ growth of layered double metal hydroxide films are mostly aluminum alloys, and the invention of in-situ construction of layered double metal hydroxide films on the surface of copper alloys has not been reported yet

Method used

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  • Method for in-situ construction of superhydrophobic coating on copper alloy surface
  • Method for in-situ construction of superhydrophobic coating on copper alloy surface
  • Method for in-situ construction of superhydrophobic coating on copper alloy surface

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Embodiment 1

[0042] In the present embodiment, a method of constructing a superhydrophobic coating on the surface of the copper alloy in situ, comprising the steps of:

[0043] . A copper alloy surface pretreatment:

[0044] Aluminum element with a higher copper content aluminum brass alloy as a base material of a copper alloy, a zinc content of 25.09%, aluminum 5.89%, Mn 1.48%, Fe 0.40%, balance copper; cut into copper alloy, width and height of 10mm pieces of any size copper alloy material × 10mm × 5mm, using size No. 240 mesh, 600 mesh, 800 mesh, mesh 2000, 5000 and 7000 mesh SiC paper object, with successively different size SiC papers grinding and diamond suspension was 0.5μm copper alloy material subjected to a surface polishing treatment, and then rinsed with deionized water surface of the copper alloy material, and then the copper alloy material has an ethanol solution, deionized water and subjected to ultrasonic cleaning with a particle size of 5 minutes, then dried with cold air to o...

Embodiment 2

[0053] The present embodiment is substantially the same as first embodiment, is unique in that:

[0054] In the present embodiment, a method of constructing a superhydrophobic coating on the surface of the copper alloy in situ, comprising the steps of:

[0055] . A copper alloy surface pretreatment:

[0056] Aluminum element with a higher copper content aluminum brass alloy as a base material of a copper alloy, a zinc content of 25.09%, aluminum 5.89%, Mn 1.48%, Fe 0.40%, balance copper; cut into copper alloy, width and height of 10mm pieces of any size copper alloy material × 10mm × 5mm, using size No. 240 mesh, 600 mesh, 800 mesh, mesh 2000, 5000 and 7000 mesh SiC paper object, with successively different size SiC papers grinding and diamond suspension was 0.5μm copper alloy material subjected to a surface polishing treatment, and then rinsed with deionized water surface of the copper alloy material, and then the copper alloy material has an ethanol solution, deionized water and...

Embodiment 3

[0069] The present embodiment is substantially the same as the embodiment described above, it is unique in that:

[0070] . A copper alloy surface pretreatment:

[0071] As the base material of brass, a zinc content of 30%, balance copper; cut into the brass, width and height of an arbitrary size 10mm × 10mm × 5mm pieces of brass, with a particle size of 240 mesh number, 600 mesh, 800 mesh, mesh 2000, 5000 and 7000 mesh SiC paper purposes, carried out with different particle size SiC papers sequentially polished, and then the suspension was 0.5μm diamond surface polished brass with a particle size, then deionized water cleaning the surface of the brass, brass, and then successively subjected to ultrasonic cleaning for 5 minutes in ethanol, deionized water, and then dried with cold air to obtain clean dry surface preparation of brass, standby;

[0072] . B brass surface constructed in situ layered double hydroxide / oxide film multistage process:

[0073] Brass surface will be afte...

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Abstract

In order to fill in the gaps in the prior art, the present invention discloses a method for in-situ construction of a superhydrophobic coating on the surface of a copper alloy for the first time: introduce divalent and trivalent elements (such as Zn, Al) into the copper alloy, and the copper alloy Immersed in sodium chloride solution, the layered double metal hydroxide / oxide multi-level structure film can be obtained in situ; determine the microscopic morphology and phase type of the synthesized multi-level structure, and adjust the temperature for preparing the coating. A multi-level structure with different densities was built; the static contact angle of the surface modified by perfluorooctyl triethoxysilane was determined; and the corrosion resistance of copper alloys with superhydrophobic coatings was characterized by electrochemical tests, thereby Demonstration of corrosion resistance of superhydrophobic coatings. The present invention is the first proposed method for constructing a superhydrophobic coating on the surface of copper alloy in situ, which is simple, convenient, energy-saving, environmentally friendly, low in cost, strong in controllability, strong in binding force with copper alloy substrate, stable in structure and relatively practical. Strong, can be widely used in industrial production.

Description

Technical field [0001] The present invention relates to a method for preparing a superhydrophobic coating the surface of a metallic material, in particular, relates to a method for constructing a superhydrophobic coating on the surface of the copper alloy in situ, anti-corrosion coating material applied to the preparation of a copper alloy Field Engineering, belongs corrosion and protection field metal. Background technique [0002] Copper alloy is the most important species in addition alloy steel, aluminum alloy, it has a pivotal role in the electric and electronic information, marine development. Copper has a high positive potential, a corrosion-resistant metal, the amount used in the marine field only after the steel, it is widely used in the plumbing, and water and other marine industries. However, oxygen-containing chlorine ions in the solution, the formation of complex ions of copper, corrosion is more serious. In the present methods of corrosion protection with a conventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/68C23C22/83
CPCC23C22/68C23C22/83
Inventor 姜颖张国腾邢娟娟顾辉
Owner SHANGHAI UNIV
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