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Process for producing aluminum surface super hydrophobic thin film

A super-hydrophobic, aluminum surface technology, applied in the direction of electrolytic organic material coating, etc., can solve the problems of time-consuming, complicated process, unsuitable for large-scale application in industrial fields, etc.

Inactive Publication Date: 2008-01-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Qian Baitai prepared a superhydrophobic surface by means of chemical etching and surface fluorination (QianBT, Shen ZQ. Langmuir, 2005, 21(20): 9007-9009), but the process of surface fluorination is relatively complicated and expensive. , it is necessary to immerse the metal sample in the methanol solution of 1.0wt.% tridecafluorooctyltriethoxysilane which has been hydrolyzed in advance, take it out after soaking at room temperature for 1h, and then heat it in the oven at 130°C for 1h
The Chinese invention patent application number is 200310119322.X discloses a simple super-hydrophobic film preparation method, which is prepared from polymers and long-chain fatty acids that are easily adsorbed on solid surfaces and contain amine-based reactive groups. , therefore, the combination between the superhydrophobic film and the solid surface is only through the van der Waals force, which is not suitable for large-scale application in the industrial field.

Method used

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  • Process for producing aluminum surface super hydrophobic thin film
  • Process for producing aluminum surface super hydrophobic thin film
  • Process for producing aluminum surface super hydrophobic thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The substrate metal used for the organic coating is pure aluminum with grade 1200, and the size is 50×30×0.4 (mm).

[0052] After the dislocation etching treatment, the aluminum sample with a microscopic rough structure is subjected to organic coating treatment. The specific steps and process conditions are as follows:

[0053] Step 1: Prepare Electrolyte Solution

[0054]

[0055] Select 0.5mmol / l, 1mol / l sodium borate of water-soluble triazazine organic compound salts containing the above-mentioned functional groups, and the rest are distilled water to be prepared as an electrolyte solution for organic coating;

[0056] Step 2: Make the working electrode

[0057] The surface of pure aluminum roughened and cleaned before the preparation of the superhydrophobic film is used as the substrate, which is the working electrode;

[0058] Step 3: Preparation of Dense Organic Nanofilms

[0059] The prepared working electrode is placed in the prepared electrolyte solution ...

Embodiment 2

[0064] The substrate metal used for the organic coating is pure aluminum grade 1235, and the size is 50×30×0.4 (mm).

[0065] After the dislocation etching treatment, the aluminum sample with a microscopic rough structure is subjected to organic coating treatment. The specific steps and process conditions are as follows:

[0066] Step 1: Prepare Electrolyte Solution

[0067]

[0068] Select 1.2mmol / l of water-soluble triazazine organic compound salts containing the above-mentioned functional groups, 1.5mol / l sodium carbonate, 0.3mol / l lithium hydroxide, and the rest are distilled water to be prepared as an electrolytic solution for organic coating ;

[0069] Step 2: Make the working electrode

[0070] The surface of pure aluminum roughened and cleaned before the preparation of the superhydrophobic film is used as the substrate, which is the working electrode;

[0071] Step 3: Preparation of Dense Organic Nanofilms

[0072] The prepared working electrode is placed in the...

Embodiment 3

[0077] The substrate metal used for the organic coating is pure aluminum grade 1350, and the size is 50×30×0.4 (mm).

[0078]After the dislocation etching treatment, the aluminum sample with a microscopic rough structure is subjected to organic coating treatment. The specific steps and process conditions are as follows:

[0079] Step 1: Prepare Electrolyte Solution

[0080]

[0081] Choose the water-soluble triazazine organic compound salt 2mmol / l containing the above-mentioned functional groups, 2mol / l potassium hydroxide, and the rest are distilled water to be prepared as an electrolytic solution for organic coating;

[0082] Step 2: Make the working electrode

[0083] The surface of pure aluminum roughened and cleaned before the preparation of the superhydrophobic film is used as the substrate, which is the working electrode;

[0084] Step 3: Preparation of Dense Organic Nanofilms

[0085] The prepared working electrode is placed in the prepared electrolyte solution f...

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Abstract

The invention discloses a super dewatering film preparing method on the Al surface, which comprises the following steps: formulating the organic coating film with the electrolysis solution by selecting 0.5-5mmol / l water-soluble triazoxide organic compound salt and 0.25-5mol / l basic supporting electrolysis salt; regarding the roughening and cleaning aluminium surface as the working electrode and putting in the electrolysis solution; proceeding with the organic coating with tri electrode method (the coating temperature is 5-25Deg. C, the current density is 0.5-10A / m2, the coating time is 30s-50min); preparing a layer dense super dewatering film with super dewatering function characteristic and binding the organic film with aluminium basis surface tightly by the conjugated linkage. The invention can be used for the large-area super dewatering modifying property on the aluminum surface, in particular to the specially-shaped and complicated parts. The method is provided with the simple operation, the easy industrialization characteristic.

Description

technical field [0001] The invention relates to the technical field of aluminum surface treatment and modification, in particular to a method for preparing an organic nano-film with super-hydrophobic functional properties on the aluminum surface. Background technique [0002] Nanomaterials have been widely used for their special physical, chemical, electrical, magnetic and optical properties. In the research of material surface engineering, the use of organic nano-film materials to modify the surface of materials is one of the main directions of research. [0003] As far as the surface properties of materials are concerned, wettability is an important feature of solid surfaces, and it plays an important role in people's daily life as well as in industrial and agricultural production. With the gradual maturity of the research on the hydrophobic and hydrophilic properties of materials and the continuous development of bionic technology, people have focused on the preparation ...

Claims

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Application Information

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IPC IPC(8): C25D9/02
Inventor 康志新衷诚武李元元
Owner SOUTH CHINA UNIV OF TECH
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