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Anti-icing super-hydrophobic coating constructed on surface of metal copper in situ, preparation method and application of anti-icing super-hydrophobic coating

A super-hydrophobic coating and anti-icing technology, which can be applied to devices, coatings, anti-corrosion coatings, etc. for coating liquids on the surface, can solve the problems of high cost, complex preparation process of anti-icing super-hydrophobic surface, etc. Low, excellent hydrophobicity, roughness-enhancing effect

Active Publication Date: 2022-04-29
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of complex preparation process and high cost of the existing anti-icing super-hydrophobic surface on copper metal surface, and provides an anti-icing super-hydrophobic coating constructed in situ on the surface of metal copper, a preparation method and its application

Method used

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  • Anti-icing super-hydrophobic coating constructed on surface of metal copper in situ, preparation method and application of anti-icing super-hydrophobic coating
  • Anti-icing super-hydrophobic coating constructed on surface of metal copper in situ, preparation method and application of anti-icing super-hydrophobic coating
  • Anti-icing super-hydrophobic coating constructed on surface of metal copper in situ, preparation method and application of anti-icing super-hydrophobic coating

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Step 1, the preparation of CuO surface on metal copper surface

[0035] Add 300mL deionized water into the beaker, add 40g sodium hydroxide, add deionized water to the solution 500mL mark after dissolving, and obtain sodium hydroxide solution; use 2.5g sodium hydroxide, 3.5g sodium phosphate, 3.5g sodium carbonate Dissolve 2.5g of sodium silicate in 100mL of ionized water to prepare degreasing solution; use 125ml / L hydrochloric acid to prepare pickling solution.

[0036] Then, the copper sheet of the anode is subjected to pretreatment such as degreasing, pickling and ultrasonic ethanol cleaning in order to remove grease and impurities on the metal surface; at a temperature of 20°C, the current is kept at 2mA / cm 2 Oxidation for 15min to obtain Cu(OH) 2 surface, the anodized Cu(OH) 2 The surface was placed in an oven at 180°C for 2 hours to obtain a CuO surface.

[0037] Step 2. Preparation of universal superhydrophobic coating for anti-icing on copper-based surface

...

Embodiment 2

[0046] Change the concentration of sodium hydroxide solution in Step 1 of Example 1 to 1mol / L, change the temperature to 15°C, change the anodic oxidation time to 5min, and change the current density to 2mA / cm 2, all the other processes are shown in Example 1, its surface scanning image and static water contact angle are as follows Figure 7 (a) shown. The static water contact angle on the surface of the sample can reach 161°, and the surface presents a nano-needle-like multi-level micro-nano structure morphology.

Embodiment 3

[0048] Change the concentration of sodium hydroxide solution in Step 1 of Example 1 to 3mol / L, change the temperature to 25°C, change the anodic oxidation time to 10min, and change the current density to 5mA / cm 2 , all the other processes are shown in Example 1, its surface scanning image and static water contact angle are as follows Figure 7 (b) shown. The static water contact angle on the surface of the sample can reach 161°, and the surface presents a pine needle-like multi-level micro-nano structure morphology.

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Abstract

The invention relates to the technical field of super-hydrophobic materials, in particular to an anti-icing super-hydrophobic coating constructed on the surface of metal copper in situ and a preparation method and application thereof.The preparation method comprises the steps that firstly, a CuO surface is prepared on a copper base through an anodic oxidation method, the CuO surface is of a nano-needle-shaped multi-stage micro-nano structure, then chemical modification is conducted on the CuO surface, and the super-hydrophobic coating is obtained; the preparation method of the super-hydrophobic coating is simple and environment-friendly, and a rough multi-stage micro-nano structure can be constructed only through two-step treatment. The coating has excellent super-hydrophobic performance, corrosion resistance and anti-icing performance, and plays a certain role in promoting the field of metal copper anti-icing.

Description

technical field [0001] The invention relates to the technical field of superhydrophobic materials, in particular to an anti-icing superhydrophobic coating constructed in situ on the surface of metal copper, a preparation method and application thereof. Background technique [0002] The inevitable occurrence of frost and ice on metal surfaces at low temperatures is a global problem. At present, most of them adopt active anti-icing methods, that is, anti-icing / de-icing by spraying salt particles or heating. The implementation efficiency of these traditional methods is low and cannot fundamentally solve the problem. So far, the most effective methods to prevent ice disasters are mainly passive methods, including electrothermal method, mechanical vibration method, ultrasonic method and so on. Although these methods can solve the icing problem to a certain extent, there are problems such as complex design, high energy consumption, high processing cost, and serious mechanical fat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/34C09D183/08C09D5/08B05D5/00B05D7/14B05D5/02C09K3/18
CPCC25D11/34C09D183/08C09D5/08B05D5/00B05D7/14B05D5/02C09K3/18B05D2202/45
Inventor 项腾飞曹俊吕忠陈德鹏
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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