Metallic aluminum bionic super-hydrophobic surface preparation method

A super-hydrophobic surface, metal aluminum technology, applied in the direction of special surface, metal material coating process, device for coating liquid on the surface, etc., can solve the problems of long reaction time of inorganic salt solution, large oxidation current, high reaction temperature, etc. Achieve excellent superhydrophobic and self-cleaning properties, save energy, and simplify the preparation process

Inactive Publication Date: 2012-07-18
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
View PDF6 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent No. CN101054194A discloses a method for preparing a superhydrophobic film on an aluminum substrate. The in-situ synthesis technique is used to grow a layered double hydroxyl compound metal oxide film on the aluminum substrate ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, the aluminum sheet was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 10 minutes and dried; the cleaned aluminum sheet was soaked in 6M HCl for 45 seconds, and then cleaned with deionized water; then the aluminum sheet was hung vertically Aging at room temperature for 12 hours in a mixed solution with a total concentration of cerium ions of 0.05M and a molar ratio of hexamethylenetetramine and cerium nitrate of 15:1, then raised the temperature to 70°C for 1 hour, took out the aluminum sheet, and carefully rinsed it with deionized water. Clean the surface, dry it at room temperature and then dry it at 80°C for 2 hours; then modify it in a stearic acid ethanol solution with a mass fraction of 1% at room temperature for 2 hours, take it out and dry it in the air at room temperature, and dry it in an oven at 60°C for 2 hours to obtain good superhydrophobicity. metal aluminum surface.

Embodiment 2

[0025] First, the aluminum sheet was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 10 minutes respectively, and then dried; the cleaned aluminum sheet was soaked in 1M HCl for 15 minutes, taken out and cleaned with deionized water; then the aluminum sheet was hung vertically on the The concentration of cerium ions is 0.05M, and the mixed solution of hexamethylenetetramine and cerium nitrate with a molar ratio of 15:1 is aged at room temperature for 12 hours, then heated to 70 ℃ for 2 hours, and the aluminum sheet is taken out, and the surface is carefully cleaned with deionized water , dried at room temperature and then dried at 80 °C for 2 h; then modified in stearic acid ethanol solution with a mass fraction of 1% for 2 h at room temperature, taken out to dry in room temperature atmosphere, and dried in an oven at 60 °C for 2 h to obtain a metal with good superhydrophobicity. aluminum surface.

Embodiment 3

[0027] First, the aluminum sheet was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 10 minutes and then dried; the cleaned aluminum sheet was soaked in 6M HCl for 2 minutes, taken out and cleaned with deionized water; then the aluminum sheet was hung vertically on the The cerium ion concentration is 0.05M, and the mixed solution of hexamethylenetetramine and cerium nitrate with a molar ratio of 15:1 is aged at room temperature for 12 hours, then heated to 70 °C for 3 hours, and the aluminum sheet is taken out, and the surface is carefully cleaned with deionized water , dried at room temperature and then dried at 80 °C for 2 h; then modified in stearic acid ethanol solution with a mass fraction of 1% for 2 h at room temperature, taken out to dry in room temperature atmosphere, and dried in an oven at 60 °C for 2 h to obtain a metal with good superhydrophobicity. aluminum surface.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A metallic aluminum bionic super-hydrophobic surface preparation method includes: sequentially washing aluminum sheets through acetone, absolute ethyl alcohol and deionized water in ultrasonic mode, then drying the aluminum for spare; soaking the clean aluminum sheets in HCl or NaO with centain concentration to remove a surface oxidation layer, and washing the aluminum sheets through the deionized water repeatedly; suspending the aluminum sheets performed with acid or alkali corrosion treatment perpendicularly in mixed solution of cerous nitrate and hexamine for ageing at room temperature fora night, raising the temperature to a certain value for reaction, and leading a cerium oxide film to grow on the surfaces of the aluminum sheets performed with chemical corrosion in situ. Nanoscale leaf-like structures are evenly distributed on the surface of the film, some leaves get together to form micron-order mastoids, each mastoid is formed by a large number of nanoscale leaves in staggeredgathering mode, and a metallic aluminum bionic super-hydrophobic surface is of a patellate-like nanometer-micron composite rough porous structure. Through modification of stearic acid, a contact angle between the surface and water reaches 150-165 degrees, a rolling angle is less than 10 degrees, and the metallic aluminum bionic super-hydrophobic surface has good super hydrophobic and self-cleaning performance.

Description

technical field [0001] The invention relates to a preparation technology of a metal aluminum bionic super-hydrophobic surface, in particular to a preparation method of a metal aluminum bionic super-hydrophobic surface. Background technique [0002] There are many animal and plant surfaces in nature with super-hydrophobic and self-cleaning properties, the most typical of which should be the surface of the lotus leaf. The water droplets on the surface of the lotus leaf are basically spherical. These water droplets cannot stay on the surface of the lotus leaf stably. The leaves only need to be tilted at a small angle, and the water droplets will roll down from the surface of the lotus leaf. When the water drops roll down, the dust and other pollutants on the surface of the lotus leaf will be taken away. This self-cleaning phenomenon on the surface of the lotus leaf is called lotus leaf effect. Inspired by the lotus leaf effect, biomimetic self-cleaning surfaces with superhydro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C22/56C23C22/66C23C22/68C23C22/78C23F1/20C23F1/36B05D5/08
Inventor 胡云楚梁金陈洪
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap