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Method for constructing super-hydrophobic membrane on surface of copper matrix

A copper-based, super-hydrophobic technology, applied in the field of building super-hydrophobic films, can solve the problems of cumbersome and complicated super-hydrophobic surface steps, high toxicity of raw materials, etc., and achieve good super-hydrophobicity, simple equipment and process, and stable performance.

Inactive Publication Date: 2011-11-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing method of constructing super-hydrophobic surface is complicated and the raw materials used are highly toxic. The present invention provides a method for constructing a super-hydrophobic film on the surface of a copper substrate

Method used

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  • Method for constructing super-hydrophobic membrane on surface of copper matrix
  • Method for constructing super-hydrophobic membrane on surface of copper matrix
  • Method for constructing super-hydrophobic membrane on surface of copper matrix

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specific Embodiment approach 1

[0009] Specific embodiment one: in this embodiment, a method for constructing a super-hydrophobic film on the surface of a copper substrate is realized through the following steps: 1. Putting the copper substrate into hydrochloric acid with a mass concentration of 0.1% to 30% or a mass concentration of 0.1% Soak in ~70% sulfuric acid or a mixture of equal volumes of the above two acids for 0.2 to 120 minutes to remove oxides on the surface of the copper substrate, then wash the copper substrate with deionized water for 1 to 3 times, and then rinse with ethanol for 1 to 3 times. 3 times to obtain a clean copper substrate; 2. Dissolve silver nitrate in methanol, ethanol or acetone to obtain solution A; then add a carboxylic acid with 9 to 20 carbon atoms in the main chain to solution A to dissolve it to obtain solution B ; In solution B, the concentration of silver nitrate is 1~30mmol / L, and the concentration of carboxylic acid is 1~40mmol / L; 3. Put the clean copper substrate obt...

specific Embodiment approach 2

[0013] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass concentration of hydrochloric acid in step 1 is 1%-25%, the mass concentration of sulfuric acid is 1%-60%, and the soaking time is 0.5-100min. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0014] Embodiment 3: This embodiment differs from Embodiment 1 in that the mass concentration of hydrochloric acid described in step 1 is 10%, the mass concentration of sulfuric acid is 5%, and the soaking time is 50 minutes. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention relates to a method for constructing a super-hydrophobic membrane on the surface of a copper matrix, and relates to a method for constructing a super-hydrophobic membrane, which solves the problems of complex steps of constructing the super-hydrophobic surface and large toxicity of raw materials in the conventional method. In the method, a sliver layer with a micro-nanometer structure is generated by replacement reaction of copper and silver nitrate, a rough surface is constructed on the copper matrix, and a self-assembly membrane is formed on a silver surface by utilizing long-chain carboxylic acid to reduce surface energy. When the method is used, the construction of the rough surface and surface modification are completed in one step, equipment and a process is simple, and the method is easy to operate; and the toxicity of the raw materials is low, and environmental pollution is small. The method is suitable for the large-scale industrial production of the super-hydrophobic membrane.

Description

technical field [0001] The invention relates to a method for constructing a superhydrophobic film. Background technique [0002] Superhydrophobic materials refer to materials with a contact angle with water greater than 150° and a rolling angle less than 5°. It is one of the hotspots in surface science and thin film science research in recent years. Superhydrophobic materials are widely used in daily life, industrial production, and national defense. Building superhydrophobic films on metal surfaces can enhance the corrosion resistance of metals. [0003] There are two essential elements for a superhydrophobic surface: one is that the surface must have a micro-nano rough structure, and the other is that the surface material has a low surface energy. Usually, the construction of micro-nano rough structure on the surface of the substrate and the modification of the surface with low surface energy substances are carried out in two steps. For example, Liu Weimin et al. in "Meth...

Claims

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Application Information

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IPC IPC(8): C23C18/54
Inventor 陈宁潘钦敏祝青杨胜男
Owner HARBIN INST OF TECH
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