CN103173644A - Super-hydrophobic porous aluminum alloy material and preparation method thereof - Google Patents
Super-hydrophobic porous aluminum alloy material and preparation method thereof Download PDFInfo
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- CN103173644A CN103173644A CN2011104332996A CN201110433299A CN103173644A CN 103173644 A CN103173644 A CN 103173644A CN 2011104332996 A CN2011104332996 A CN 2011104332996A CN 201110433299 A CN201110433299 A CN 201110433299A CN 103173644 A CN103173644 A CN 103173644A
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Abstract
The invention relates to the technical field of metal material treatment, and particularly provides a super-hydrophobic porous aluminum alloy material and a preparation method thereof. The super-hydrophobic porous aluminum alloy material provided by the invention is dark red in color, the contact angle between the surface and water is 150-166 degrees, and the rolling angle of water drops on the surface is less than 10 degrees, thereby achieving favorable hydrophobicity. According to the preparation method of the super-hydrophobic porous aluminum alloy material, the preparation method has the advantages of simple operating process and favorable reproducibility; no expensive equipment or complicated chemical treatment processes are needed; improvement can be made on the basis of the traditional process; and the cost is low. Thus, the invention has good industrial application prospects.
Description
Technical field
The present invention relates to the metallic substance processing technology field, refer in particular to a kind of super hydrophobic porous aluminum alloy materials and preparation method thereof.
Background technology
In recent years, super hydrophobic surface (contact angle of material surface and water is greater than 150 °, and water droplet has less roll angle from the teeth outwards) has caused and has studied widely interest.Contact area due to liquid on super hydrophobic surface is very little, can effectively suppress the phenomenons such as surface oxidation, burn into frost, conduction of current; In addition, the water droplet of super hydrophobic surface can not stop at surface-stable, inclined surface just can tumble from the surface and not stay any vestige a little, therefore, super hydrophobic surface all is with a wide range of applications in fields such as outdoor antenna, exterior coating, steamer, biomedical devices, microfluid, windshields.Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, is widely used in aerospace, automobile, machinofacture, boats and ships and chemical industry.Has good electroconductibility, thermal conductivity, working plasticity, corrosion stability and higher intensity.Yet the metallic surface that aluminium alloy surface treatment method commonly used obtains does not have self-cleaning property, and is easily contaminated, super-hydrophobic aluminium alloy be successfully prepared application efficiency and the scope that will help to improve aluminium alloy.
Superhydrophobic surface of aluminum alloy is really used in actual industrial and agricultural production and daily life, and its preparation technology is crucial, is also the basis.In recent years, developed the technology of some preparation superhydrophobic surface of aluminum alloys, as chemical Vapor deposition process, electrochemical deposition method, polyelectrolyte alternating deposit method, anonizing, plasma method, chemical method for etching etc.Yet, existing these methods or use expensive material such as the surface can extremely low fluorinated siloxane, need special processing units such as plasma processing equipment or complicated technological process, thereby cost is higher, be difficult to industrialization, and the superhydrophobic surface of aluminum alloy of producing and the contact angle of water be less than 150 °, and greater than 10 °, hydrophobic performance is not good in the roll angle on surface for water droplet.
Summary of the invention
The invention reside in the problem not good for present super hydrophobic porous aluminum alloy materials hydrophobic performance, that manufacturing process equipment is complicated and cost is higher, and a kind of super hydrophobic porous aluminum alloy materials that overcomes the above problems and preparation method thereof is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of super hydrophobic porous aluminum alloy materials, described aluminum alloy material surface are garnet, surface and the contact angle of water between 150 °～166 °, water droplet in the roll angle on surface less than 10 °.
A kind of preparation method of super hydrophobic porous aluminium alloy as above is characterized in that, preparation comprises the processing step of following order:
(1) the homogeneous smooth fine aluminium in surface or aluminum alloy plate materials are carried out mechanical polishing and polishing, remove surface imperfection and oxide film, use washed with de-ionized water 5-35 minute, and oven dry;
(2) soaked sheet material 5-25 minute with the 0.5-3mol/L hydrochloric acid soln, and use washed with de-ionized water, oven dry;
(3) the preparation chemical pretreatment solution is the Cu (NO of 0.015-0.4mol/L
3)
2NaCl mixing solutions with 0.8-5g/L.Then aluminium plate is immersed in chemical pretreatment solution, the reaction times is 30-150 minute, makes its surface form spinel type CuAl
2O
4Nanocrystalline, reacted aluminium plate is cleaned and dries with distilled water or naturally do;
(4) then aluminium flake being put into massfraction is that the stearic acid ethanolic soln of 0.2-3% soaks, and the time is 10-50 minute, and temperature is 5-45 ℃, reduces its surface free energy;
(5) cleaning with appropriate dehydrated alcohol, take out and wash down with clear water, is 60～75% in relative humidity, under the atmosphere at room temperature environment dry 4-45 hour; Namely get described super hydrophobic porous aluminium alloy.
In described step 1, scavenging period is 25 minutes.
In described step 2, concentration of hydrochloric acid solution is 2mol/L, and soak time is 15 minutes.
Cu (NO in described step 3
3)
2Concentration be 0.2mol/L, the concentration of NaCl is 3g/L, the reaction times is 80 minutes.
The concentration of the stearic acid ethanolic soln in described step 4 is 1%, and soak time is 30 minutes, and temperature is 25 ℃ of room temperatures.
Be 65% to humidity in described step 5, under the atmosphere at room temperature environment, drying is 24 hours.
Beneficial effect of the present invention is: super hydrophobic porous aluminum alloy materials of the present invention, be garnet, and surface and the contact angle of water are between 150 °～166 °, and water droplet less than 10 °, has good hydrophobicity in the roll angle on surface; Super hydrophobic porous aluminium alloy material preparation method for material of the present invention, preparation method's operating procedure is simple, favorable reproducibility, need not any expensive device, also do not need complicated chemical treating process, can improve on traditional technology, with low cost, have good industrial applications prospect.
Description of drawings
Fig. 1. the scanning electron microscope (SEM) photograph of the super-hydrophobic aluminum alloy surface that the embodiment of the present invention 1 obtains
Fig. 2. the super-hydrophobic aluminum alloy surface that the embodiment of the present invention 1 obtains and the contact angle test pattern of water
Embodiment:
Embodiment 1
At first, first aluminum alloy plate materials is carried out mechanical polishing and polishing, remove surface imperfection and oxide film, cleaned respectively 15 minutes with ethanol and deionized water.Soaked sheet material 15 minutes with the 2mol/L hydrochloric acid soln, and use washed with de-ionized water, oven dry; 0.1mol/L cupric nitrate and 4g/L sodium-chlor are mixed and fully stir and make tank liquor; Aluminum alloy plate materials was immersed in 30 ℃～40 ℃ tank liquors 80 minutes, fully clean with deionized water subsequently, and dry in furnace temperature 80-100 ℃.Being to soak 30 minutes in 1% stearic acid ethanolic soln at massfraction, is 60～75% in relative humidity, under the atmosphere at room temperature environment dry 24 hours, can prepare superhydrophobic surface of aluminum alloy.The wettability of testing this coatingsurface with OCA20 contact angle tester, result shows that the contact angle of this surface and water is respectively 160 ± 2 ° and 154 ± 2 °, as shown in Figure 1, be the scanning electron microscope (SEM) photograph of the super-hydrophobic aluminum alloy surface of the present embodiment, Fig. 2 is the contact angle test pattern of the super-hydrophobic aluminum alloy surface of the present embodiment and water.
Embodiment 2
At first, first the pure aluminum plate material is carried out mechanical polishing and polishing, remove surface imperfection and oxide film, cleaned respectively 5 minutes with ethanol and deionized water.Soaked sheet material 25 minutes with the 0.5mol/L hydrochloric acid soln, and use washed with de-ionized water, oven dry; 0.015mol/L cupric nitrate and 0.8g/L sodium-chlor are mixed and fully stir and make tank liquor; The aluminium sheet material was immersed in 30 ℃～40 ℃ tank liquors 150 minutes, fully clean with deionized water subsequently, and dry in furnace temperature 80-100 ℃.Being to soak 50 minutes in 0.2% stearic acid ethanolic soln at massfraction, is 60～75% in relative humidity, under the atmosphere at room temperature environment dry 45 hours, can prepare superhydrophobic surface of aluminum alloy.With the wettability that OCA20 contact angle tester is tested this coatingsurface, result shows that the contact angle of this surface and water is respectively 162 ± 2 ° and 155 ± 2 °.
Embodiment 3
At first, first aluminum alloy plate materials is carried out mechanical polishing and polishing, remove surface imperfection and oxide film, cleaned respectively 35 minutes with ethanol and deionized water.Soaked sheet material 5 minutes with the 3mol/L hydrochloric acid soln, and use washed with de-ionized water, oven dry; 0.2mol/L cupric nitrate and 5g/L sodium-chlor are mixed and fully stir and make tank liquor; Aluminum alloy plate materials was immersed in 30 ℃～40 ℃ tank liquors 30 minutes, fully clean with deionized water subsequently, and dry in furnace temperature 80-100 ℃.Being to soak 10 minutes in 3% stearic acid ethanolic soln at massfraction, is 60～75% in relative humidity, under the atmosphere at room temperature environment dry 24 hours, can prepare superhydrophobic surface of aluminum alloy.With the wettability that OCA20 contact angle tester is tested this coatingsurface, result shows that the contact angle of this surface and water is respectively 161 ± 2 ° and 154 ± 2 °.
Embodiment 4
At first, first aluminum alloy plate materials is carried out mechanical polishing and polishing, remove surface imperfection and oxide film, cleaned respectively 25 minutes with ethanol and deionized water.Soaked sheet material 15 minutes with the 2mol/L hydrochloric acid soln, and use washed with de-ionized water, oven dry; 0.2mol/L cupric nitrate and 3g/L sodium-chlor are mixed and fully stir and make tank liquor; Aluminum alloy plate materials was immersed in 30 ℃～40 ℃ tank liquors 80 minutes, fully clean with deionized water subsequently, and dry in furnace temperature 80-100 ℃.Being to soak 30 minutes in 1% stearic acid ethanolic soln at massfraction, is 65% in relative humidity, under the atmosphere at room temperature environment dry 28 hours, can prepare superhydrophobic surface of aluminum alloy.With the wettability that OCA20 contact angle tester is tested this coatingsurface, result shows that the contact angle of this surface and water is respectively 163 ± 2 ° and 155 ± 2 °.
The above embodiment, it is preferred embodiments of the present invention, be not to limit the scope of the present invention, therefore all equivalences of doing according to the described structure of the present patent application the scope of the claims, feature and principle change or modify, all should be included in patent claim of the present invention.
Claims (7)
1. super hydrophobic porous aluminum alloy materials, it is characterized in that: described aluminum alloy material surface is garnet, the contact angle of surface and water between 150 °～166 °, water droplet in the roll angle on surface less than 10 °.
2. the preparation method of a super hydrophobic porous aluminium alloy as claimed in claim 1, is characterized in that, preparation comprises the processing step of following order:
(1) the homogeneous smooth fine aluminium in surface or aluminum alloy plate materials are carried out mechanical polishing and polishing, remove surface imperfection and oxide film, use washed with de-ionized water 5-35 minute, and oven dry;
(2) soaked sheet material 5-25 minute with the 0.5-3mol/L hydrochloric acid soln, and use washed with de-ionized water, oven dry;
(3) the preparation chemical pretreatment solution is the Cu (NO of 0.015-0.4mol/L
3)
2NaCl mixing solutions with 0.8-5g/L.Then aluminium plate is immersed in chemical pretreatment solution, the reaction times is 30-150 minute, makes its surface form spinel type CuAl
2O
4Nanocrystalline, reacted aluminium plate is cleaned and dries with distilled water or naturally do;
(4) then aluminium flake being put into massfraction is that the stearic acid ethanolic soln of 0.2-3% soaks, and the time is 10-50 minute, and temperature is 5-45 ℃, reduces its surface free energy;
(5) cleaning with appropriate dehydrated alcohol, take out and wash down with clear water, is 60～75% in relative humidity, under the atmosphere at room temperature environment dry 4-45 hour; Namely get described super hydrophobic porous aluminium alloy.
3. the preparation method of super hydrophobic porous aluminium alloy according to claim 2, is characterized in that, in described step 1, scavenging period is 25 minutes.
4. the preparation method of super hydrophobic porous aluminium alloy according to claim 2, is characterized in that, in described step 2, concentration of hydrochloric acid solution is 2mol/L, and soak time is 15 minutes.
5. the preparation method of super hydrophobic porous aluminium alloy according to claim 2, is characterized in that Cu (NO in described step 3
3)
2Concentration be 0.2mol/L, the concentration of NaCl is 3g/L, the reaction times is 80 minutes.
6. the preparation method of super hydrophobic porous aluminium alloy according to claim 2, is characterized in that, the concentration of the stearic acid ethanolic soln in described step 4 is 1%, and soak time is 30 minutes, and temperature is 25 ℃ of room temperatures.
7. the preparation method of super hydrophobic porous aluminium alloy according to claim 2, is characterized in that, is 65% to humidity in described step 5, under the atmosphere at room temperature environment dry 24 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413641A (en) * | 2013-07-29 | 2013-11-27 | 西安交通大学 | Ice coating prevention power transmission aluminum wire and preparation method for surface super-hydrophobic state structural layer |
| CN108939243A (en) * | 2018-08-31 | 2018-12-07 | 无锡百德福纺织科技有限公司 | A kind of micro-porous permeable headband for mask |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310037A (en) * | 2011-09-28 | 2012-01-11 | 湖南工业大学 | Method for preparing super-hydrophobic colored aluminum alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102310037A (en) * | 2011-09-28 | 2012-01-11 | 湖南工业大学 | Method for preparing super-hydrophobic colored aluminum alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413641A (en) * | 2013-07-29 | 2013-11-27 | 西安交通大学 | Ice coating prevention power transmission aluminum wire and preparation method for surface super-hydrophobic state structural layer |
| CN108939243A (en) * | 2018-08-31 | 2018-12-07 | 无锡百德福纺织科技有限公司 | A kind of micro-porous permeable headband for mask |
| CN108939243B (en) * | 2018-08-31 | 2024-03-05 | 江苏百德福新材料科技有限公司 | Microporous breathable headband for mask |
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Effective date of registration: 20180601 Address after: 408121 Chongqing Fuling District Long Bridge Industrial Park Patentee after: CHONGQING NANFU ALUMINIUM CO.,LTD. Address before: 510000 Guangdong science and Technology Industrial Development Zone, Guangzhou, 231 and 233 podium B1B2 Building 1, two, three, four Patentee before: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Effective date of registration: 20180601 Address after: 510000 Guangdong science and Technology Industrial Development Zone, Guangzhou, 231 and 233 podium B1B2 Building 1, two, three, four Patentee after: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Address before: 523808 room 103, building 7, songkeyuan, Songshan Lake Science and Technology Industrial Park, Dongguan, Guangdong Patentee before: DONGGUAN CAIZHIFANG NEW MATERIAL Co.,Ltd. |
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Granted publication date: 20141224 Termination date: 20201221 |