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Preparation method for super-hydrophobic aluminum surface

An aluminum surface, super-hydrophobic technology, applied in the direction of surface reaction electrolytic coating, gaseous chemical plating, anodic oxidation, etc., can solve the problems of wire galloping, broken wire, inverted rod, etc., and achieve high stability, cold resistance and moisture resistance Good, good hydrophobicity effect

Active Publication Date: 2016-03-16
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The icing of transmission lines can easily cause accidents such as conductor galloping, disconnection, pole (tower), line tripping, and even paralysis of the power grid, which seriously threatens the safe operation of the power system and affects people's normal production and life, resulting in huge economic losses. and certain social influence

Method used

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  • Preparation method for super-hydrophobic aluminum surface
  • Preparation method for super-hydrophobic aluminum surface
  • Preparation method for super-hydrophobic aluminum surface

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method for superhydrophobic aluminum surface, is characterized in that, comprises the following steps:

[0020] (4) Aluminum sheet pretreatment: select aluminum with a purity of 99.99%, prepare an aluminum sheet with a size of 2cm×1cm×1mm, and put it into 10wt% detergent aqueous solution, 95% ethanol solution and deionized aqueous solution in sequence. Ultrasonic cleaning, each ultrasonic cleaning time is 20min; then the aluminum sheet is put into the electrolytic polishing solution for polishing, and the polishing time is controlled at 8min; then the aluminum sheet is taken out, placed in a drying oven, and dried at 80°C.

[0021] (5) Anodizing: Use the pretreated aluminum sheet as the anode, the graphite rod as the cathode, and the phosphoric acid solution with a concentration of 0.2M as the electrolyte. Put the electrolytic cell into a constant temperature water tank for electrolysis. The time is 1.5h, the voltage is 130V; after the electrolysis is comp...

Embodiment 2

[0028] A preparation method for superhydrophobic aluminum surface, is characterized in that, comprises the following steps:

[0029] (1) Aluminum sheet pretreatment: select aluminum with a purity of 99.99%, prepare an aluminum sheet of 2cm×1cm×1mm, put it into 10wt% detergent aqueous solution, 95% ethanol solution and deionized aqueous solution for ultrasonic cleaning, The ultrasonic cleaning time is 20 minutes each time; then the aluminum sheet is put into the electrolytic polishing solution for polishing treatment, and the polishing time is controlled at 8 minutes; then the aluminum sheet is taken out, placed in a drying oven, and dried at 80°C.

[0030] (2) Anodizing: Use the pretreated aluminum sheet as the anode, the graphite rod as the cathode, and the phosphoric acid solution with a concentration of 0.3M as the electrolyte. Put the electrolytic cell into a constant temperature water tank for electrolysis. The time is 1.5h, the voltage is 130V; after the electrolysis is ...

Embodiment 3

[0037] A preparation method for superhydrophobic aluminum surface, is characterized in that, comprises the following steps:

[0038] (1) Aluminum sheet pretreatment: select aluminum with a purity of 99.99%, prepare an aluminum sheet of 2cm×1cm×1mm, put it into 10wt% detergent aqueous solution, 95% ethanol solution and deionized aqueous solution for ultrasonic cleaning, The ultrasonic cleaning time is 20 minutes each time; then the aluminum sheet is put into the electrolytic polishing solution for polishing treatment, and the polishing time is controlled at 8 minutes; then the aluminum sheet is taken out, placed in a drying oven, and dried at 80°C.

[0039] (2) Anodizing: Use the pretreated aluminum sheet as the anode, the graphite rod as the cathode, and the phosphoric acid solution with a concentration of 0.4M as the electrolyte. Put the electrolytic cell in a constant temperature water tank for electrolysis. The time is 1.5h, the voltage is 130V; after the electrolysis is co...

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Abstract

The invention provides a preparation method for the super-hydrophobic aluminum surface. The preparation method comprises the following steps that (1) an aluminum sheet is pretreated, specifically, the aluminum sheet is sequentially placed into a detergent aqueous solution, an ethanol solution and a deionized aqueous solution for ultrasonic wave cleaning, and the aluminum sheet is subjected to electrolytic polishing treatment; (2) anodizing is conducted, specifically, the aluminum sheet is put into a phosphoric acid solution for anodizing and then put into a phosphoric acid solution for pore broadening; and (3) chemical vapor deposition (CVD) evaporation is conducted, specifically, the aluminum sheet is put into parylene coating equipment after being anodized, and even parylene evaporation is achieved by controlling the reaction conditions. According to the novel preparation method for the super-hydrophobic aluminum surface, the anodizing method and the CVD evaporation method are combined. A prepared aluminum surface thin film is good in hydrophobic property, high in stability and good in cold resistance and humidity resistance; the control over the thickness of the coating can be achieved by controlling the input amount of the parylene, and the thin film with the nano-scale thickness is obtained.

Description

technical field [0001] The invention relates to the field of superhydrophobic surface preparation, in particular to a method for preparing a superhydrophobic aluminum surface. Background technique [0002] Aluminum and its alloys have broad application prospects in industrial production due to their low density, high specific strength and specific stiffness. For example, the current situation of overhead transmission line conductors in my country is mainly aluminum stranded wire. The icing of transmission lines can easily cause accidents such as conductor galloping, disconnection, pole (tower), line tripping, and even paralysis of the power grid, which seriously threatens the safe operation of the power system and affects people's normal production and life, resulting in huge economic losses. and certain social impact. In recent years, due to the impact of global warming, extreme weather events occur frequently, and ice and snow disaster accidents occur on transmission line...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/16C23C16/44
Inventor 王庆徐雪霞侯双林潘瑾冯砚厅王勇李文彬
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD
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