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Aluminum-based anti-corrosion, anti-microbial adhesion superhydrophobic film and preparation method thereof

An anti-microbial and super-hydrophobic technology, applied in coatings, metal material coating processes, etc., can solve problems such as unfavorable preparation and popularization, expensive raw materials, poor corrosion resistance, etc., and achieve good self-cleaning properties and corrosion resistance, cost Inexpensive, low surface adhesion effect

Inactive Publication Date: 2019-02-15
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction of superhydrophobic film on the surface of aluminum provides an effective solution to solve the problems of poor corrosion resistance of the substrate, but most of the current preparation methods require expensive raw materials and equipment, harsh conditions and complicated process routes. Not conducive to large-scale preparation and popularization and application

Method used

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  • Aluminum-based anti-corrosion, anti-microbial adhesion superhydrophobic film and preparation method thereof
  • Aluminum-based anti-corrosion, anti-microbial adhesion superhydrophobic film and preparation method thereof
  • Aluminum-based anti-corrosion, anti-microbial adhesion superhydrophobic film and preparation method thereof

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Embodiment 1

[0024] The AA5083 aluminum alloy was placed in ethanol and deionized water for 15 minutes, respectively, and then the aluminum material was polished by electrochemical means in a perchloric acid / ethanol solution with a volume ratio of 4:1. The polishing voltage was 20V, and the polishing time was 3min, the initial polishing temperature is 4°C. After the polishing treatment, it is washed with ethanol and deionized water successively, and the residual electrolyte on the surface is cleaned for use; the polished aluminum sheet is vertically placed in a hydrothermal reaction kettle, and an ammonia solution with a concentration of 2% (volume ratio) is poured Submerge the sample in a hydrothermal reaction kettle, place it in a constant temperature box after being sealed, and react at a temperature of 90°C for 5 hours, then take out the aluminum sheet and clean it with deionized water and ethanol in sequence; prepare perfluorodecane with a concentration of 1%. The ethanol solution of ...

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Abstract

The invention belongs to the technical field of metal surface treatment, and particularly relates to an aluminum-based anti-corrosion, anti-microbial adhesion superhydrophobic film and a preparation method thereof. An aluminum substrate obtained after polishing treatment is washed to be placed in a hydrothermal reaction kettle to be subjected to constant-temperature closing for making a hydrothermal reaction in the presence of an aqueous ammonia solution, and washing is carried out after the reaction is made; and then an ethanol solution containing perfluorodecyl triethoxysilane is used for conducting low surface energy molecule modification on the substrate, and the superhydrophobic film can be obtained. The superhydrophobic film and the preparation method have the advantages of being simple in process, low in cost and wide in application range, and the prepared aluminum-based superhydrophobic film has low surface adhesion, good self-cleaning property, good corrosion resistance and anti-microbial adhesion property.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to an aluminum-based anti-corrosion and anti-microbial adhesion super-hydrophobic film and a preparation method thereof. Background technique: [0002] Aluminum is the most abundant metal element in the earth's crust. It has excellent properties such as light density, high specific strength, and strong electrical and thermal conductivity. It has been widely used in ships, aerospace, and automobile manufacturing. However, due to the high chemical activity of aluminum and the loose natural oxide film, its poor corrosion resistance has always been an important factor restricting its performance. [0003] Inspired by the characteristics of the surface and interface of biological organisms in nature, superhydrophobic surfaces are a new type of biomimetic functional materials emerging in recent years. Through the construction of micro-nano multi-level structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/20C23C26/00
CPCC23C26/00C25F3/20
Inventor 张斌斌徐玮辰李红玲段继周侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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