Preparation method of super-hydrophobic aluminum surface with self-cleaning function

A super-hydrophobic, aluminum surface technology, applied in the direction of metal material coating process, can solve the problems of complex preparation process of super-hydrophobic aluminum surface, achieve excellent self-cleaning and hydrophobic effects, simple preparation process, and reduce corrosion effects

Inactive Publication Date: 2017-02-15
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defect of complex preparation process of superhydrophobic aluminum surface existing in the prior art, the present invention provides a preparation method of superhydrophobic aluminum surface with self-cleaning function

Method used

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  • Preparation method of super-hydrophobic aluminum surface with self-cleaning function
  • Preparation method of super-hydrophobic aluminum surface with self-cleaning function
  • Preparation method of super-hydrophobic aluminum surface with self-cleaning function

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Embodiment 1

[0025] A kind of preparation method of the superhydrophobic aluminum surface with self-cleaning function of the present embodiment, comprises the steps:

[0026] (1) Pretreatment: the 6061 aluminum alloy sheet is subjected to 400 # 、1000 # 、3000 # Grinding with sandpaper, the polished samples were ultrasonically cleaned with absolute ethanol and distilled water in sequence, the ultrasonic temperature was 50°C, the time was 20min, and then dried in a constant temperature oven at 80°C for 10min to obtain a clean sample;

[0027] (2) Chemical etching: put the clean sample into 1.4 mol / L ferric chloride aqueous solution, and soak for 60 min at room temperature. Take it out and put it into an ultrasonic cleaning machine, then use absolute ethanol and distilled water to ultrasonically clean at a constant temperature of 60°C for 5 minutes to remove surface dirt, and air dry;

[0028] (3) Surface modification: soak the chemically treated sample in 2% ethanol solution of 1H,1H,2H,2H...

Embodiment 2

[0039] (1) Pretreatment: the 6061 aluminum alloy sheet is subjected to 400 # 、1000 # 、3000 # Grinding with sandpaper, the polished sample was ultrasonically cleaned with absolute ethanol and distilled water in sequence, the ultrasonic temperature was 40°C, the time was 30min, and then dried in a constant temperature oven at 50°C for 20min to obtain a clean sample;

[0040] (2) Chemical etching: put the clean sample into a 1.5 mol / L ferric chloride aqueous solution, and soak for 30 minutes at room temperature. Take it out and put it into an ultrasonic cleaning machine, then use absolute ethanol and distilled water to ultrasonically clean at a constant temperature of 40°C for 10 minutes to remove surface dirt, and air dry;

[0041] (3) Surface modification: soak the chemically treated sample in 1% ethanol solution of heptadecafluorodecyltrimethoxysilane for 2 hours at room temperature to form a hydrophobic film on the surface of the sample, then take it out and put it in 130 ...

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Abstract

The invention belongs to the technical field of surface treatment, and relates to a preparation method of a super-hydrophobic aluminum surface with a self-cleaning function. The preparation method comprises the following steps: (1) pretreatment: grinding, cleaning and drying an aluminum sample in sequence to obtain a clean sample; (2) chemical etching: putting the sample subjected to pretreatment into a chloridized molten iron solution for soaking at room temperature, then taking out the sample to clear away dirt on the surface, and drying the sample in air; and (3) surface modification: placing the sample subjected to chemical etching treatment into a low-surface-energy reagent for soaking at the room temperature for 1 to 2 h to form a layer of hydrophobic thin film on the surface of the sample, then taking out the sample, and placing the sample into a constant-temperature drying box for drying to obtain the super-hydrophobic surface. The preparation process is simple, and the raw materials are readily available; preparation of the super-hydrophobic aluminum surface with the self-cleaning function can be realized under an atmospheric environment; the contact angle for water is about 150 degrees; and the prepared super-hydrophobic aluminum surface with the self-cleaning function is good in self-cleaning and hydrophobization effect.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, in particular to a method for preparing a superhydrophobic aluminum surface with a self-cleaning function. Background technique [0002] In the 1980s, botanists Barthlott and Neihuis of the University of Bonn in Germany found that there were micron-scale protrusions and waxy tissue structures on the surface of the lotus leaf through observation of the surface structure of the lotus leaf, which made the lotus leaf superhydrophobic (that is, water dripping It will automatically gather into water droplets and roll down on the leaf surface) which has attracted great attention worldwide. Research has found that superhydrophobic phenomena can be seen everywhere in nature. Rice leaves, shark skin, butterfly wings, water strider legs, and cicada wings all have superhydrophobic microstructure surfaces. These microstructured surfaces have special properties, such as self-cleaning, anti-adhesion,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/02C23C22/78C23F1/20
CPCC23C22/02C23C22/78C23C2222/20C23F1/20
Inventor 叶霞黄超姚爱斐杨晓红范振敏刘群超
Owner JIANGSU UNIV OF TECH
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