Preparation method of super-hydrophobic aluminum sheet

A super-hydrophobic, aluminum sheet technology, applied in anodizing and other directions, can solve the problems of inability to maintain super-hydrophobicity, complex production process, complex equipment, etc., and achieve the effect of low price, low price and simple steps

Inactive Publication Date: 2015-10-21
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are complex in fabrication process, complex equipment, high cost, and cannot maintain long-term superhydrophobicity, thus limiting their application range.

Method used

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  • Preparation method of super-hydrophobic aluminum sheet
  • Preparation method of super-hydrophobic aluminum sheet
  • Preparation method of super-hydrophobic aluminum sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use the laser cutting method to cut the aluminum sheet into small pieces of appropriate size as the base, which is 30mm×30mm in this embodiment. Roughly grind the cut aluminum sheet with 1200P SiC sandpaper, and then finely polish it with 1500P SiC sandpaper to remove the oxide film and dirt on the surface of the aluminum sheet. Then put the polished aluminum sheet into a beaker filled with absolute ethanol, put the beaker into an ultrasonic cleaner, set the heating temperature to 60°C, the ultrasonic power to 80W, and the cleaning time to 10 minutes to remove the cutting produced by grinding. Replace absolute ethanol with deionized water, adjust the same ultrasonic cleaning parameters, and clean for 10 minutes to remove residual absolute ethanol on the surface of the aluminum sheet. The cleaned aluminum sheet is put into an oven, the temperature is set to 100°C, and the drying time is set to 1h. Prepare 6g / L sodium chloride solution and place it in a glass cup, fix on...

Embodiment 2

[0027] The preparation method of the superhydrophobic aluminum sheet is the same as that of Example 1 except for the following technical features: when carrying out the surface modification of the aluminum sheet, the solution used is myristic acid in a molten state at 70° C., and the soaking time is 30 to 40 minutes.

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Abstract

The invention relates to a preparation method of an aluminum sheet, in particular to a preparation method of a super-hydrophobic aluminum sheet. The preparation method of the super-hydrophobic aluminum sheet concretely comprises the steps of removing a surface oxidation layer of the aluminum sheet, then cleaning, baking, allowing the aluminum sheet to serve as a positive pole and inert metal as a negative pole, electrolyzing the positive pole and the negative pole, cleaning again, drying, placing the aluminum sheet in a surface modifier to be soaked, cleaning, then drying, and obtaining the super-hydrophobic aluminum sheet. According to the preparation method, materials are easy to obtain, low in cost, safe and nontoxic; sodium chloride serves as an electrolyte; a direct current power supply can be replaced by a dry battery; a container containing an electrolytic solution for electrolysis can be replaced by a glass cup; stearine and tetradecanoic acid are safe and nontoxic, does not pollute the environment, and can be purchased in the market easily; the steps are simple; the preparation is convenient; an aluminum or aluminium alloy super-hydrophobic surface prepared by the method has very good surface hydrophobicity; a contact angle of the super-hydrophobic surface is about 160 degrees; a rolling angle of the super-hydrophobic surface is about 9 degrees; longer super-hydrophobicity can be kept at room temperature; and articles for daily use, such as sodium chloride, the direct current power supply, a lead wire and absolute ethyl alcohol can be used for preparing the super-hydrophobic aluminum surface.

Description

technical field [0001] The invention relates to a method for preparing an aluminum sheet, in particular to a method for preparing a superhydrophobic aluminum sheet. Background technique [0002] Aluminum and aluminum alloys are currently widely used and one of the most economical and applicable materials. Common items and household items in daily life are made of aluminum and aluminum alloys, such as various cooking utensils, packaging cigarettes, candies, etc. Aluminum foil, children's toys, aluminum alloy doors and windows, etc. [0003] A superhydrophobic surface generally refers to a surface whose static contact angle with water is greater than 150° and whose dynamic contact angle with water is less than 10°. Due to the extremely hydrophobic characteristics of the superhydrophobic surface, it has the characteristics of self-cleaning, anti-icing, anti-fouling, reducing frictional resistance and inhibiting surface oxidation. It has been widely used in the industrial and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04
Inventor 周伟凌伟淞段炼刘伟刘瑞亮艾尚宥
Owner XIAMEN UNIV
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