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Preparation method of hydrophobic micro-nano structure aluminum surface

A technology of micro-nano structure and aluminum surface, which is applied in the fields of nanotechnology, nanotechnology and nanotechnology for materials and surface science, can solve the problems of high cost and complicated preparation scheme, achieve simple use, improve hydrophobic performance, Deploy simple effects

Inactive Publication Date: 2017-02-01
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of complex preparation schemes and high cost in the prior art, and provide a method for preparing a hydrophobic micro-nano structure aluminum surface. The preparation method of the present invention has the advantages of simple method, easy operation and processing, and relatively low cost. inferior merit

Method used

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  • Preparation method of hydrophobic micro-nano structure aluminum surface
  • Preparation method of hydrophobic micro-nano structure aluminum surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Sand the aluminum base with a size of 20*20*2mm with sandpaper, ultrasonically clean it with acetone and distilled water, and dry it in a drying oven to remove the oil and oxide layer on the surface;

[0024] Chemical etching: put the pretreated aluminum substrate into the etching solution, prepare a hydrochloric acid solution, place the aluminum substrate in the solution for etching for 14 hours at room temperature, then ultrasonically clean with anhydrous ethanol and distilled water, and then dry in a drying oven ; Then placed in the configured cupric chloride solution to etch the surface for 3 minutes, followed by ultrasonic cleaning with absolute ethanol and distilled water and drying with a drying oven. Described hydrochloric acid solution concentration is 0.8mol / L, and described cupric chloride solution concentration is 0.8mol / L;

[0025] Surface modification: Put the etched aluminum base into the prepared 0.2mol / L stearic acid absolute ethanol solution, modify th...

Embodiment 2

[0027] Sand the aluminum base with a size of 20*20*2mm with sandpaper, ultrasonically clean it with acetone and distilled water, and dry it in a drying oven to remove the oil and oxide layer on the surface;

[0028] Chemical etching: put the pretreated aluminum base into the etching solution, prepare a hydrochloric acid solution, place the aluminum base in the solution for etching for 11 hours at room temperature, then ultrasonically clean with anhydrous ethanol and distilled water, and then dry in a drying oven ; Then placed in the configured cupric chloride solution to etch the surface for 3 minutes, followed by ultrasonic cleaning with absolute ethanol and distilled water and drying with a drying oven. Described hydrochloric acid solution concentration is 0.8mol / L, and described cupric chloride solution concentration is 0.8mol / L;

[0029] Surface modification: Put the etched aluminum base into the prepared 0.1mol / L stearic acid absolute ethanol solution, modify the aluminum...

Embodiment 3

[0031] Sand the aluminum base with a size of 20*20*2mm with sandpaper, ultrasonically clean it with acetone and distilled water, and dry it in a drying oven to remove the oil and oxide layer on the surface;

[0032] Chemical etching: Put the pretreated aluminum base into the etching solution, prepare a hydrochloric acid solution, place the aluminum base in the solution for etching for 8 hours at room temperature, then ultrasonically clean with anhydrous ethanol and distilled water, and then dry in a drying oven ; Then placed in the configured cupric chloride solution to etch the surface for 3 minutes, followed by ultrasonic cleaning with absolute ethanol and distilled water and drying with a drying oven. Described hydrochloric acid solution concentration is 0.8mol / L, and described cupric chloride solution concentration is 0.8mol / L;

[0033] Surface modification: Put the etched aluminum base into the prepared 0.1mol / L stearic acid absolute ethanol solution, modify the aluminum ...

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Abstract

The invention relates to a preparation method of a hydrophobic micro-nano structure aluminum surface. The method comprises the following steps: firstly, pre-treating an aluminum sheet and polishing by abrasive paper; carrying out ultrasonic washing through acetone and distilled water; drying the aluminum sheet for later use; putting the pre-treated aluminum sheet into hydrochloric acid and etching; then taking out the aluminum sheet and carrying out the ultrasonic washing through absolute ethyl alcohol and the distilled water and drying; then putting the aluminum sheet into a copper chloride solution and etching; carrying out the ultrasonic washing through the absolute ethyl alcohol and the distilled water and drying; finally, carrying out low surface energy treatment on the surface, and putting the etched aluminum sheet into a stearic acid absolute ethyl alcohol solution and modifying the surface in a constant-temperature water bath; taking out the aluminum sheet and putting the aluminum sheet into a drying box; drying and curing to prepare a surface with a hydrophobic effect. The preparation method of the hydrophobic micro-nano structure aluminum surface has the advantages that a treatment method is simple and a contact angle reaches 146 degrees.

Description

technical field [0001] The invention relates to metal surface modification technology, in particular to a method for preparing a hydrophobic micro-nano structure aluminum surface. Background technique [0002] In nature, many animals and plants have a natural hydrophobic structure: the lotus leaves will be cleaner and brighter after rain, and will roll back and forth on the lotus leaves with water droplets; water striders can run freely on the water surface, etc. Therefore, many researchers have begun to devote themselves to the research of this phenomenon, and to study the structure of its surface. [0003] Aluminum is extremely common among metals, and it is also a metal with a high utilization rate, and it is also the most widely used metal material in industrial production. Aluminum and its alloys have a series of superior properties, such as relatively high strength, good ductility, good electrical conductivity, and oxidation resistance. It is widely used in the field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/20C23F1/14B82Y30/00B82Y40/00
CPCC23F1/20B82Y30/00B82Y40/00C23F1/14
Inventor 叶霞姚爱斐黄超杨晓红范振敏刘群超
Owner JIANGSU UNIV OF TECH
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