CN107964675A - The preparation method of super-hydrophobic anodised aluminium - Google Patents
The preparation method of super-hydrophobic anodised aluminium Download PDFInfo
- Publication number
- CN107964675A CN107964675A CN201610912136.9A CN201610912136A CN107964675A CN 107964675 A CN107964675 A CN 107964675A CN 201610912136 A CN201610912136 A CN 201610912136A CN 107964675 A CN107964675 A CN 107964675A
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- Prior art keywords
- aluminum metal
- hydrophobic
- super
- preparation
- ethyl alcohol
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
Abstract
This application discloses a kind of preparation method of super-hydrophobic anodised aluminium, including：Aluminum metal-matrix bottom, is placed in the mixed solution of absolute ethyl alcohol and perchloric acid progress surface polishing by s1；Aluminum metal-matrix bottom after polishing, is used absolute ethyl alcohol and deionized water cleaning by s2 successively；S3, using aluminum metal-matrix bottom as anode, platinum electrode carries out anodic-reaction conditions, 20~25mAcm of current density as cathode in oxalic acid solution‑2, 10~20 DEG C of reaction temperature, when the reaction time 0.5~1.5 is small；S4, deionized water cleaning, drying.This case obtains super hydrophobic surface by anodic oxidation in aluminum metal-matrix basal surface, its water contact angle reaches 157.3 °, roll angle is close to 1 °, and the aluminum metal-matrix basal surface after the oxidation also shows good mechanical performance, and good stability is shown in fields such as frozen water, boiling water.
Description
Technical field
The present invention relates to super hydrophobic material technical field, more particularly to a kind of preparation side of super-hydrophobic anodised aluminium
Method.
Background technology
The wetability of material surface depends on the surface chemical property and microstructure of material；So-called super hydrophobic surface refers to
It is more than 150 ° of surface with the contact angle of water, roll angle is less than 10 °；Since it is in waterproof, antifog, snow defence, anti-pollution, anti-stick
Even, anti-oxidant, anticorrosion and automatically cleaning and prevent electric current conduction etc. to be with a wide range of applications, be subject to material science
The extensive concern of researcher.
Aluminium is silvery white non-ferrous metal, and fusing point is 657 DEG C, density 2.70g/cm3；Due to high specific strength and preferably
The excellent physics such as ductility and easily molded processing, chemical property, metallic aluminium is in electronics, electric power, traffic, aviation, space, change
Have a wide range of applications in many industrial circles such as work, building materials and daily life, become usage amount in industry at present and be only second to steel
The second largest metalloid material of iron；But the safe current potential of aluminium is very low (≤1.6V), when the metal of aluminium and other high potentials connects
When touching, corrosion is easily in contact；Therefore for aluminium is as very important engineering material, the antioxygen of aluminium surface how is improved
Change and corrosion resistance is very important.
The content of the invention
It is of the prior art to overcome it is an object of the invention to provide a kind of preparation method of super-hydrophobic anodised aluminium
Deficiency.
To achieve the above object, the present invention provides following technical solution：
The embodiment of the present application discloses a kind of preparation method of super-hydrophobic anodised aluminium, including：
Aluminum metal-matrix bottom, is placed in the mixed solution of absolute ethyl alcohol and perchloric acid progress surface polishing by s1；
Aluminum metal-matrix bottom after polishing, is used absolute ethyl alcohol and deionized water cleaning by s2 successively；
S3, using aluminum metal-matrix bottom as anode, platinum electrode carries out anodic-reaction conditions, electric current as cathode in oxalic acid solution
20~25mAcm of density-2, 10~20 DEG C of reaction temperature, when the reaction time 0.5~1.5 is small.
S4, deionized water cleaning, drying.
Preferably, in the preparation method of above-mentioned super-hydrophobic anodised aluminium, in the step s1, surface polishing conditions
Meet：Polish voltage：15~20V；2~7 DEG C of temperature；Polishing time 4~8 minutes.
Preferably, in the preparation method of above-mentioned super-hydrophobic anodised aluminium, in the step s1, absolute ethyl alcohol and height
The volume ratio of chloric acid is 3:1~4:1.
Preferably, in the preparation method of above-mentioned super-hydrophobic anodised aluminium, in the step s3, oxalic acid solution concentration
0.34~0.4mol/L.
Compared with prior art, the advantage of the invention is that：
This case obtains super hydrophobic surface by anodic oxidation in aluminum metal-matrix basal surface, its water contact angle reaches 157.3 °,
Roll angle is close to 1 °, and the aluminum metal-matrix basal surface after the oxidation also shows good mechanical performance, and frozen water,
The fields such as boiling water show good stability.
Embodiment
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that embodiment described specific material ratio, process conditions and its result are only used
In the explanation present invention, without the present invention described in detail in claims should will not be limited.
Embodiment 1
In the present embodiment, the preparation method of super-hydrophobic anodised aluminium, including：
1st, aluminum metal-matrix bottom is placed on progress surface polishing in the mixed solution of absolute ethyl alcohol and perchloric acid, polishing electricity
Pressure：16V；5 DEG C of temperature；The volume ratio of polishing time 8 minutes, absolute ethyl alcohol and perchloric acid is 3:1；
2nd, the aluminum metal-matrix bottom after polishing is cleaned using absolute ethyl alcohol and deionized water successively；
3rd, using aluminum metal-matrix bottom as anode, platinum electrode carries out anodic-reaction conditions, oxalic acid is molten as cathode in oxalic acid solution
Liquid concentration 0.4mol/L, current density 25mAcm-2, 20 DEG C of reaction temperature, when the reaction time 1 is small.
4th, deionized water cleaning, drying.
The present embodiment obtains super hydrophobic surface by anodic oxidation in aluminum metal-matrix basal surface, its water contact angle reaches
157.3 °, roll angle is close to 1 °, and the aluminum metal-matrix basal surface after the oxidation also shows good mechanical performance, and
Good stability is shown in fields such as frozen water, boiling water.
Embodiment 2
In the present embodiment, the preparation method of super-hydrophobic anodised aluminium, including：
1st, aluminum metal-matrix bottom is placed on progress surface polishing in the mixed solution of absolute ethyl alcohol and perchloric acid, polishing electricity
Pressure：20V；5 DEG C of temperature；The volume ratio of polishing time 8 minutes, absolute ethyl alcohol and perchloric acid is 4:1；
2nd, the aluminum metal-matrix bottom after polishing is cleaned using absolute ethyl alcohol and deionized water successively；
3rd, using aluminum metal-matrix bottom as anode, platinum electrode carries out anodic-reaction conditions, oxalic acid is molten as cathode in oxalic acid solution
Liquid concentration 0.34mol/L, current density 25mAcm-2, 20 DEG C of reaction temperature, when the reaction time 1.5 is small.
4th, deionized water cleaning, drying.
Embodiment 3
In the present embodiment, the preparation method of super-hydrophobic anodised aluminium, including：
1st, aluminum metal-matrix bottom is placed on progress surface polishing in the mixed solution of absolute ethyl alcohol and perchloric acid, polishing electricity
Pressure：20V；7 DEG C of temperature；The volume ratio of polishing time 8 minutes, absolute ethyl alcohol and perchloric acid is 4:1；
2nd, the aluminum metal-matrix bottom after polishing is cleaned using absolute ethyl alcohol and deionized water successively；
3rd, using aluminum metal-matrix bottom as anode, platinum electrode carries out anodic-reaction conditions, oxalic acid is molten as cathode in oxalic acid solution
Liquid concentration 0.4mol/L, current density 25mAcm-2, 15 DEG C of reaction temperature, when the reaction time 0.5 is small.
4th, deionized water cleaning, drying.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Key element.
Claims (4)
- A kind of 1. preparation method of super-hydrophobic anodised aluminium, it is characterised in that including：Aluminum metal-matrix bottom, is placed in the mixed solution of absolute ethyl alcohol and perchloric acid progress surface polishing by s1；Aluminum metal-matrix bottom after polishing, is used absolute ethyl alcohol and deionized water cleaning by s2 successively；S3, using aluminum metal-matrix bottom as anode, platinum electrode carries out anodic-reaction conditions, current density as cathode in oxalic acid solution 20~25mAcm-2, 10~20 DEG C of reaction temperature, when the reaction time 0.5~1.5 is small；S4, deionized water cleaning, drying.
- 2. the preparation method of super-hydrophobic anodised aluminium according to claim 1, it is characterised in that：In the step s1, Surface polishing conditions meet：Polish voltage：15~20V；2~7 DEG C of temperature；Polishing time 4~8 minutes.
- 3. the preparation method of super-hydrophobic anodised aluminium according to claim 1, it is characterised in that：In the step s1, The volume ratio of absolute ethyl alcohol and perchloric acid is 3:1~4:1.
- 4. the preparation method of super-hydrophobic anodised aluminium according to claim 1, it is characterised in that：In the step s3, 0.34~0.4mol/L of oxalic acid solution concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610912136.9A CN107964675A (en) | 2016-10-20 | 2016-10-20 | The preparation method of super-hydrophobic anodised aluminium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610912136.9A CN107964675A (en) | 2016-10-20 | 2016-10-20 | The preparation method of super-hydrophobic anodised aluminium |
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| CN107964675A true CN107964675A (en) | 2018-04-27 |
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| CN201610912136.9A Pending CN107964675A (en) | 2016-10-20 | 2016-10-20 | The preparation method of super-hydrophobic anodised aluminium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267135A (en) * | 2018-11-29 | 2019-01-25 | 上海交通大学 | A kind of three-dimensional network interpenetrating organic/inorganic hydrophobic coating and preparation method thereof |
| CN109628978A (en) * | 2019-01-22 | 2019-04-16 | 中国科学院海洋研究所 | A kind of preparation method of erosion resistant super hydrophobic surface |
| RU2707458C1 (en) * | 2019-07-01 | 2019-11-26 | Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) | Method of producing super-hydrophobic coatings with anti-icing properties on aluminum and its alloys |
-
2016
- 2016-10-20 CN CN201610912136.9A patent/CN107964675A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 彭珊: "超疏水/超双疏材料的制备及其性能研究", 《中国博士学位论文全文数据库 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267135A (en) * | 2018-11-29 | 2019-01-25 | 上海交通大学 | A kind of three-dimensional network interpenetrating organic/inorganic hydrophobic coating and preparation method thereof |
| CN109628978A (en) * | 2019-01-22 | 2019-04-16 | 中国科学院海洋研究所 | A kind of preparation method of erosion resistant super hydrophobic surface |
| RU2707458C1 (en) * | 2019-07-01 | 2019-11-26 | Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) | Method of producing super-hydrophobic coatings with anti-icing properties on aluminum and its alloys |
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