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Method for preparing metal carboxylate super-hydrophobic coating layer on metal surface

A technology of metal carboxylate and super-hydrophobic coating, which is applied in the direction of surface coating liquid devices, coatings, special surfaces, etc., can solve the problems of time-consuming and lengthy, achieve rapid response, reduce costs, and broaden the scope of application Effect

Inactive Publication Date: 2013-11-27
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, time-consuming and tedious,

Method used

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  • Method for preparing metal carboxylate super-hydrophobic coating layer on metal surface
  • Method for preparing metal carboxylate super-hydrophobic coating layer on metal surface
  • Method for preparing metal carboxylate super-hydrophobic coating layer on metal surface

Examples

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Effect test

example 1

[0032] (1) Surface treatment of pure copper plate. Sand with 600 grit metallographic sandpaper to remove the surface oxide layer, then rinse with distilled water and dry.

[0033] (2) Dip the pure copper plate in 99% ethyl acetate solution and ultrasonically clean it for 10 minutes to remove surface oil, then wash it with distilled water and dry it.

[0034] (3) with 1.7gCuCl 2 2H 2 Prepare a 0.1 mol / L solution of O with 100 mL of 99.7% ethanol solution. Apply the prepared solution to the treated pure copper plate.

[0035] (4) Immerse the pure copper plate coated with the solution in water for several minutes, take it out and dry it at room temperature for 2 hours to obtain a superhydrophobic coating. The contact angle is about 170° and the rolling angle is less than 2°.

example 2

[0037] (1) Surface treatment of the iron plate. Sand with 240-grit metallographic sandpaper to remove the surface oxide layer, then rinse with distilled water and dry.

[0038] (2) Dip the metal plate in 99% ethyl acetate solution and ultrasonically clean it for 20 minutes to remove surface oil, then wash it with distilled water and dry it.

[0039] (3) with 5.5g FeCl 3 ·6H 2 Prepare a 0.2 mol / L solution of O and 100 mL of ethanol with a mass fraction of 99.7%.

[0040] Apply the prepared solution to the treated iron plate.

[0041] (4) Immerse the iron plate coated with the solution in water for several minutes, take it out and dry it at room temperature for 2 hours to obtain a super-hydrophobic coating. The contact angle is about 165° and the rolling angle is less than 2°.

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Abstract

The invention relates to a method for preparing a metal carboxylate super-hydrophobic coating layer on a metal surface. The method is characterized in rapid reaction, no needing immersion and only needing to coat a reaction solution onto a metal plate surface. Used raw materials are common and have low prices so that the cost of preparing the super-hydrophobic coating layer is greatly reduced; in addition, the method provided by the invention can be applied to the super-hydrophobic coating layer preparation on multiple varieties of metal surfaces, the application range of the super-hydrophobic coating layer is widened, and the scale production is ensured to be more market values.

Description

technical field [0001] The invention relates to a method for preparing a metal carboxylate superhydrophobic coating on a metal surface, and belongs to the fields of functional materials, metal surface modification and protection. Background technique [0002] The solid surface has a certain surface energy, and the surface energy directly affects the wettability of the solid to the liquid. This wettability is characterized by Young's equation. On an ideal solid surface (uniform structure and composition), the contact angle has a specific value and is determined by the surface tension, satisfying Young’s equation [0003] cosθ=(γ sg -γ sl ) / γ lg [0004] gamma sg , γ sl , γ lg are the interfacial tension between solid-gas, solid-liquid, and gas-liquid, respectively. [0005] Practical solid surfaces are to some extent rough or uneven in composition. Therefore, the measured contact angle is quite different from the result calculated by Young's equation. In the 1940s, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/08B05D7/14B05D3/00
Inventor 耿兴国李峰赵磊陈志
Owner NORTHWESTERN POLYTECHNICAL UNIV
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