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Preparation method of superhydrophilic copper wire mesh

A super-hydrophilic, copper mesh technology, applied in the field of surface modification of solid materials, can solve the problems of increasing control difficulty, being easily damaged, affecting the super-hydrophilic characteristics of copper mesh, etc., achieving fewer steps, simple operation and easy control, and cost reduction. Effect

Inactive Publication Date: 2018-06-19
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods require many types of reagents and processing steps, accompanied by many influencing factors, which increases the difficulty of control
In addition, the deposited or grown micro-nano-structured film is easily damaged when subjected to external forces, which will inevitably affect the super-hydrophilic properties of the copper mesh.

Method used

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  • Preparation method of superhydrophilic copper wire mesh
  • Preparation method of superhydrophilic copper wire mesh
  • Preparation method of superhydrophilic copper wire mesh

Examples

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preparation example Construction

[0036] Such as Figure 1-6 As shown, the method for preparing a super-hydrophilic copper mesh proposed by the present invention includes:

[0037] A copper mesh is woven by T2 copper wires, wherein, in the present invention, the mesh of the copper mesh needs to be not less than 100 meshes after weaving; preferably 150 meshes;

[0038] The 150 mesh red copper mesh was ultrasonically cleaned, and the ultrasonically cleaned copper mesh was soaked; then soaked in deionized water to form a saturated copper mesh for use; the treated saturated copper mesh was sintered to obtain Copper mesh with super hydrophilic properties;

Embodiment 1

[0040] The 150-mesh red copper mesh was immersed in deionized water and acetone successively for ultrasonic cleaning, and the ultrasonically cleaned copper mesh was immersed in HCl solution, where the concentration of HCl was 5wt%, soaked for 5 minutes, and finally immersed in Ionized water for 1 minute, set aside; the treated saturated copper mesh is placed in a vacuum atmosphere furnace for sintering, where inert gas protection is provided during the sintering process; specifically, the furnace is evacuated and then nitrogen is passed into the furnace. When the pressure rises to atmospheric pressure, turn off the nitrogen and start the furnace. Adopt the staged heating mode, firstly heat to 500°C, hold for 0.5 hour, then heat up to 850°C, hold for 1 hour, finally close the atmosphere furnace, naturally cool to room temperature, open the furnace, and take out the sample.

Embodiment 2

[0042] The 150-mesh copper mesh was immersed in deionized water and acetone successively for ultrasonic cleaning, and the ultrasonically cleaned copper mesh was immersed in HCl solution. The concentration of HCl was 15wt%, soaked for 3 minutes, and finally immersed in Ionized water for 1 minute, set aside; the treated saturated copper mesh is placed in a vacuum atmosphere furnace for sintering, where inert gas protection is provided during the sintering process; specifically, the furnace is evacuated and then nitrogen is passed into the furnace. When the pressure rises to atmospheric pressure, turn off the nitrogen and start the furnace. Using the stepwise heating mode, the temperature is raised to 600°C for 1 hour, and then to 830°C for 2 hours. Finally, the atmosphere furnace is turned off, the furnace is naturally cooled to room temperature, the furnace is turned on, and the sample is taken out.

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Abstract

The invention provides a preparation method of a superhydrophilic copper wire mesh. A groove structure has a micrometer and nanometer composite size and is formed on the surface of a copper wire of the copper wire mesh through acid pickling and sintering, the surface energy of the copper wire is increased, and at last, the hydrophobic property of the copper wire mesh is converted into the superhydrophilic property. The preparation method comprises the following steps: S1, performing ultrasonic cleaning on the copper wire mesh, soaking the copper wire mesh subjected to the ultrasonic cleaning,and then soaking the soaked copper wire mesh in deionized water so as to form a saturated copper wire mesh for later use; and S2, sintering the saturated copper wire mesh treated in the step 1, thereby obtaining the superhydrophilic copper wire mesh after sintering. The preparation method has the advantages that the operation is simple and easy to control when the cost is reduced.

Description

Technical field [0001] The invention relates to the field of surface modification of solid materials, in particular to a preparation method of superhydrophilic copper mesh. Background technique [0002] Super-hydrophilic surface refers to a surface with a contact angle of less than 5° with water. It has important applications in anti-fog, self-cleaning, enhanced heat transfer, biomedicine and other fields. In recent years, due to the continuous development of material science and micro-processing technology, the preparation of super-hydrophilic surfaces has become a research focus. [0003] For example, the surfaces of conventional high-energy metals such as copper and aluminum are generally only hydrophilic. In order to further improve their hydrophilicity, building micro-nano-scale structures on the surface is an effective way to obtain super-hydrophilic properties. According to Cassie theory, copper meshes are generally hydrophobic, but in application fields such as oil-water s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G5/032C23F1/18C23F17/00
CPCC23F1/18C23F17/00C23G5/032
Inventor 李骥吕鲁仓
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES