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Method for preparing super hydrophobic coating on copper or copper alloy net

A technology of super-hydrophobic coating and copper alloy mesh, which is applied in the field of functional materials, can solve the problems of increasing process complexity, production cost, and environmental impact, and achieve the effects of easy operation, simplified preparation process, and good repeatability

Inactive Publication Date: 2013-01-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of these reagents will not only increase the complexity and production cost of the process, but also have an impact on the environment

Method used

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  • Method for preparing super hydrophobic coating on copper or copper alloy net
  • Method for preparing super hydrophobic coating on copper or copper alloy net
  • Method for preparing super hydrophobic coating on copper or copper alloy net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of embodiment 1 superhydrophobic nano-gold-brass net, comprises the steps:

[0021] Clean the 300-mesh brass mesh with ultrasonic ethanol solvent, dry it, and then immerse it in 20mM HAuCl 4 In the aqueous solution, react at room temperature for 60 minutes, take it out, rinse the surface with distilled water, put it in an oven at 80 ° C for 5 hours, and finally place it in the air for 7 days to obtain a superhydrophobic coating.

[0022] attached figure 1 It is the surface topography of nano-gold-brass network observed by Hitachi S224800 scanning electron microscope (SEM). It can be seen from the figure that a layer of micron-scale coating is tightly covered on the brass mesh fiber, and from figure 1 As can be seen in the enlarged picture on the right, these micron-scale coatings are composed of many nanoribbons, thereby constructing a micro-nano double microstructure on the surface.

Embodiment 2

[0023] The preparation method of embodiment 2 superhydrophobic nano-silver-copper mesh, comprises the steps:

[0024] Clean the 100-mesh red copper mesh with ultrasonic ethanol solvent, dry it, and then immerse it in 10mM AgNO 3 In the aqueous solution, react at room temperature for 30 minutes, take it out, rinse the surface with distilled water, put it in a 60°C oven for 3 hours, and finally place it in the air for 5 days to obtain a superhydrophobic coating.

[0025] attached figure 2 It is the SEM picture of the observed nano-silver-copper network. It can be seen from the figure that nanosheets and dendritic micro-nano structures are piled up on the copper mesh fibers. The length of the branches is 3-5 μm, and the bifurcations on the branches are composed of many nano-scale rods. Therefore, in Micro-nano double microstructures are also constructed on the surface.

Embodiment 3

[0026] The preparation method of embodiment 3 superhydrophobic nano-platinum-bronze mesh, comprises the following steps:

[0027] After the 500-mesh bronze mesh was cleaned by ultrasonic ethanol solvent, it was dried in the air, and then immersed in 50mM H 2 PtCl 6 ·6H 2 O aqueous solution, reacted at room temperature for 720min, took it out, rinsed the surface with distilled water, put it in a 120°C oven to dry for 9h, and finally left it in the air for 15 days to obtain a superhydrophobic coating.

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Abstract

The invention discloses a method for preparing a super hydrophobic coating on copper or a copper alloy net without surface modification. A precious metal nanometer coating is plated on the copper or the copper alloy net by adopting a chemical plating method, the coating is not needed to be modified by substance with low surface energy, and the coating is converted into a super hydrophobic coating after being placed in air for a certain period of time. According to the method adopted by the invention, the technology is simple, the operation is easy, the repeatability is good, and the method is applicable to the large-scale production of the super hydrophobic coating.

Description

technical field [0001] The invention relates to a method for preparing a super-hydrophobic coating on a copper or copper alloy net without surface modification. It belongs to the technical field of functional materials. Background technique [0002] Superhydrophobic coating refers to the surface on which the contact angle of water droplets is greater than 150°, and the rolling angle is less than 10°. This type of coating is similar to the surface of lotus leaves, and water droplets have low adhesion on it and are easy to roll off. Therefore, it can carry the dust on the surface and has a self-cleaning effect. Generally, the preparation of superhydrophobic coatings needs to meet two conditions: one is to make the surface of the coating have a micro-nano double microstructure similar to lotus leaves, and the other is that the surface of the coating needs to be modified with low surface energy substances. In recent years, my country has carried out a series of research and de...

Claims

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Application Information

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IPC IPC(8): C23C18/44
Inventor 陈嵘苏春平杨浩吕中
Owner WUHAN INSTITUTE OF TECHNOLOGY
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