Super-hydrophobic and super-oleophobic surface preparation technology

A super-amphiphobic surface and super-hydrophobic technology, which is applied in anodic oxidation and other directions, to achieve the effect of strong practicability, easy performance and noise reduction

Active Publication Date: 2010-06-23
中科润泉(烟台)工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the current literature, there is no simple and practical method for preparing various types of water, aqueous solutions, and various oils at the same time. Therefore, the aluminum-based superoleophobic The surface provides a very important practical preparation method, which is expected to be industrially developed and produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Use acetone, ethanol, and deionized water to ultrasonically clean the aluminum sheet (99.9%) sample (80mm×20mm×2mm) in order to remove the grease on the sample, and then dry it for use;

[0039] 2. Use 0.03M sodium sulfate aqueous solution as the electrolyte solution for the aluminum sheet processed in the previous step, the aluminum sheet as the anode, and the lead plate as the cathode, the voltage is 4V, and the current density is 7mA / cm 2 Under constant current, oxidize at room temperature for 4 hours. The reacted sample was ultrasonically cleaned with ethanol and deionized water in sequence, and dried in the air;

[0040] 3. Use 1M sulfuric acid aqueous solution as the electrolyte, the aluminum sheet as the anode, and the lead plate as the cathode for the sample after the electrochemical oxidation treatment in the previous step, and rapidly oxidize it at a constant temperature of 10°C and a voltage of 60V for 10 minutes. Then use ethanol and deionized water to u...

Embodiment 2

[0055] 1. Use acetone, ethanol, and deionized water to ultrasonically clean the aluminum alloy sheet (the Al content is about 97%, and the rest is Mg, Si, etc.) (80mm×20mm×2mm) to remove the grease on the sample and dry it in the air ;

[0056] 2. Use 0.05M sodium sulfate aqueous solution as the electrolyte solution for the aluminum alloy sheet cleaned in the previous step, the aluminum alloy sheet as the anode, and the lead plate as the cathode, the voltage is 5V, and the current density is 8mA / cm 2 Under constant current, electrochemical etching reaction at room temperature for 3.5 hours. The reacted aluminum alloy sheet is ultrasonically cleaned with ethanol and deionized water in sequence;

[0057] 3. Use 1M sulfuric acid aqueous solution as the electrolyte for rapid anodic oxidation of the aluminum alloy sheet after the electrochemical etching treatment in the previous step. The aluminum foil is used as the anode and the lead plate is used as the cathode. A voltage of 70...

Embodiment 3

[0060] 1. Use acetone, ethanol, and deionized water to ultrasonically clean the aluminum alloy (the Al content is about 97%, the rest is Mg, Si, etc.) (80mm×20mm×2mm) to remove the surface grease, and then dry it for use ;

[0061] 2. Take the aluminum alloy sheet cleaned in the previous step, use 0.1M sodium sulfate aqueous solution as the electrolyte solution, the aluminum alloy sheet as the anode, and the lead plate as the cathode, the voltage is 8V, and the current density is 15mA / cm 2 , electrochemical etching reaction at room temperature for 2.5 hours. The reacted aluminum alloy sheet is ultrasonically cleaned with ethanol and deionized water in sequence, and dried in the air;

[0062] 3. Use 1M sulfuric acid aqueous solution as the electrolyte for the rapid anodic oxidation reaction of the aluminum alloy sheet after the electrochemical etching reaction in the previous step. The aluminum alloy sheet is used as the anode and the lead plate is used as the cathode. Apply a...

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PUM

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Abstract

The invention discloses super-hydrophobic and super-oleophobic surface preparation technology. In the preparation technology, aluminum or aluminum alloy sheets are subjected to two-step electrochemical treatment, and then are modified by using perfluorinated octadecyl trichlorosilane or perfluorinated polymethacrylate to prepare the super-hydrophobic and super-oleophobic surface. The surface has super-hydrophobic property on aqueous solution of which the pH value is between 1 and 14 and super-oleophobic property on various oil drops, wherein a contact angle of the surface on water is 171 degrees, and a rolling angle is less than 1 degree; the surface expresses the super-oleophobic property on various oil drops except for perfluorinated polymer liquid, and all contact angles between the oil drops and the surface are more than 150 degrees, and rolling angles are generally less than 10 degrees; and the surface can also be put in air for a long time and can still maintain the super-hydrophobic property and super-oleophobic property.

Description

technical field [0001] The invention relates to a superhydrophobic and superamphiphobic surface preparation technology, which is a preparation method for producing a superhydrophobic surface on the surface of aluminum or aluminum alloys for water, aqueous solutions of different pH values ​​and most oil liquids, in particular to a simultaneous A superamphiphobic surface with superhydrophobic, superoleophobic, and superhydrophobic properties to polymer liquids under heating and melting conditions, as well as long-term stability and robustness. Background technique [0002] Surface wettability is an important characteristic of solid surfaces, which is mainly determined by the chemical composition and microstructure of the solid surface. Since some surfaces with special wettability have extensive and important uses in the fields of production, life and basic research, the preparation of superhydrophobic and superoleophobic surfaces has attracted more and more attention in recent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04
Inventor 周峰吴伟词刘维民
Owner 中科润泉(烟台)工业科技有限公司
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