CN101935859A - Simple and convenient method for preparing super-hydrophobic film on surface of metal matrix - Google Patents
Simple and convenient method for preparing super-hydrophobic film on surface of metal matrix Download PDFInfo
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- CN101935859A CN101935859A CN 201010268183 CN201010268183A CN101935859A CN 101935859 A CN101935859 A CN 101935859A CN 201010268183 CN201010268183 CN 201010268183 CN 201010268183 A CN201010268183 A CN 201010268183A CN 101935859 A CN101935859 A CN 101935859A
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Abstract
The invention relates to technology for preparing a super-hydrophobic surface, in particular to a simple and convenient method for preparing a super-hydrophobic film on the surface of a metal matrix. The super-hydrophobic film is prepared by the following steps of: cleaning the surface of the metal matrix with ethanol and de-ionized water and drying the surface of the metal matrix for later use; applying current or voltage to the cleaned matrix and a platinum electrode serving as a cathode in 10<-1> to 1mol/L ethanol solution of fatty acid CH3(CH2)nCOOH (n is equal to 10 to 16) by an electrochemical method; and forming a fatty acid-metal complex film on the surface of the anodic metal matrix after processing and drying the film to obtain the super-hydrophobic film. The method has the advantages of simple and easy operation and no need of expensive equipment. The prepared super-hydrophobic surface is expected to be applied to the fields of metal corrosion resistance, water resistance, self-cleaning and the like.
Description
Technical field
The present invention relates to the technology of preparing of super hydrophobic surface, specifically is a kind of short-cut method for preparing super hydrophobic film at metal base surface.
Background technology
Wettability is a key character of solid surface, it is generally acknowledged, water is in contact angle＞150 of solid surface °, and this surface is super-hydrophobic state.Facts have proved that super hydrophobic surface not only has self-cleaning function, but also have anti-conduction of current, protection against corrosion, waterproof, function such as antifog, anti-pollution.Therefore, it is with a wide range of applications in fields such as liquid conveying, trace analyses.
Discover that the coarse structure of micro-/ nano yardstick and low surface free energy are two prerequisites on constructing super-drainage surface.Based on this theory, the investigator proposes the method on multiple constructing super-drainage surface, as micromachined method, plasma etching method, chemical Vapor deposition process, chemical etching method, electrochemical deposition method etc.But the thinking of these methods all is to make up coarse structure earlier in the metallic surface, then the low surface energy material is carried out on the surface and modifies, and then can obtain super hydrophobic surface.This explanation adopts the method for preparing super hydrophobic surface to need for two steps at least.For this reason, the river thunder proposes single stage method and prepares super hydrophobic surface (Shutao Wang, Lin Feng, LeiJiang.Advanced Materials.2006,18,767-770), be specially, after in the ethanolic soln of metals such as copper immersion 0.01M TETRADECONIC ACID 3～5 days, the copper surface can form the super-hydrophobic rete of soap.For shortening the treatment time, Xi Jinming (Xi Jinming, Meng Haifeng, the river thunder. Chinese patent, application number: 200710177876.3.Jinming Xi, Shutao Wang, Lin Feng, et al.Appl.Phys.Lett., 2008,92:053102.) propose to adopt the method for electrochemical deposition, in the 0.5mol/L adipic acid solution, (with copper is anode, and other metals are negative electrode) applies 5V voltage between cathode and anode, at the metallic surface deposition one deck soap super hydrophobic surface as negative electrode, this process required time can be reduced to 3 hours.The principle of this method is that the anode dissolution reaction at first takes place copper, with Cu
2+Form enter solution, and with the fatty acid radical complexing, subsequently, near the metal complex that is diffused into the negative electrode can be separated out in the metallic surface as negative electrode.But in this method treatment time still very long, be necessary exploitation method more fast, so that its application in industrial production.
Summary of the invention
The purpose of this invention is to provide a kind of quick, easy short-cut method for preparing super hydrophobic film at metal base surface.
For achieving the above object, the technical solution used in the present invention is:
A kind of short-cut method for preparing super hydrophobic film at metal base surface:
1) matrix cleans: metallic matrix is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopting electrochemical method, is 10 in concentration
-2～1mol/L lipid acid CH
3(CH
2)
nIn the ethanolic soln of COOH (n=10～16),, handle back anode metal matrix surface and lipid acid-metal complex rete occurs, dry up and promptly get super hydrophobic film cleaning the back matrix and applying volts DS as the platinum electrode of negative electrode.
Described step 2) in, the volts DS that applies is 10～50V, and the time is 30min～2h.Described metallic matrix is copper, zinc, magnesium, iron or silver.
The advantage that the present invention had: adopt electrochemical method to accelerate the anode dissolution of metal, near the metal ion of anode this moment is (as Cu
2+, Zn
2+Deng) concentration is higher relatively, their can be rapidly and the fatty acid radical complexing in the solution.When near the formed lipid acid-metal complex substrate concentration anode is higher than its solubleness in ethanol, lipid acid-metal complex can be separated out at anode surface, and then at the super-hydrophobic rete of anode formation one deck lipid acid complex compound, further shortened simultaneously film formation time, operation is simple in the present invention, do not need expensive equipment.Prepared super hydrophobic surface is expected to be applied to fields such as metal corrosion protection, waterproof and automatically cleaning.
Description of drawings
Fig. 1 prepares the contact angle measuring result figure of super hydrophobic surface at the copper matrix for the embodiment of the invention.
Fig. 2 prepares the contact angle measuring result figure of super hydrophobic surface at brass base for the embodiment of the invention.
Fig. 3 is equipped with the contact angle measuring result figure of super hydrophobic surface in the zinc-base system for the embodiment of the invention.
Embodiment
Embodiment 1
1) matrix cleans: the copper matrix is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopt electrochemical method, at 25 ℃ of 0.5mol/LCH
3(CH
2)
12In the ethanolic soln of COOH, apply the 10V volts DS to cleaning between back copper matrix and the platinum electrode as negative electrode, blue lipid acid-copper complex rete appears in the copper surface behind the processing 1h, dries up through nitrogen, this rete promptly is super-hydrophobic state, and surface contact angle is 151.3 ± 3 ° (referring to Fig. 1).
Embodiment 2
1) matrix cleans: (nitrogen dries up stand-by for 28wt.%Zn, 72wt.%Cu) surface to use ethanol, washed with de-ionized water brass successively;
2) preparation of super hydrophobic film: adopt electrochemical method, at 25 ℃ of 0.3mol/LCH
3(CH
2)
12In the ethanolic soln of COOH, apply the 40V volts DS to cleaning between back brass base and platinum electrode as negative electrode, light blue lipid acid-metal complex rete appears in brass surfaces after handling 2h, dry up through nitrogen, this rete promptly is super-hydrophobic state, and surface contact angle is 154.7 ± 3 ° (referring to Fig. 2).
Embodiment 3
1) matrix cleans: the zinc-base body is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopt electrochemical method, at 25 ℃ of 0.1mol/LCH
3(CH
2)
12In the ethanolic soln of COOH, apply the 30V volts DS to cleaning between back zinc-base body and the platinum electrode as negative electrode, white adipose acid-zinc complex rete appears in zinc surface behind the processing 2h, dries up through nitrogen, this rete promptly is super-hydrophobic state, and surface contact angle is 152.5 ± 3 ° (referring to Fig. 3).
Embodiment 4
1) matrix cleans: magnesium matrix is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopt electrochemical method, at 25 ℃ of 1mol/LCH
3(CH
2)
14In the ethanolic soln of COOH, apply the 10V volts DS to cleaning between back zinc-base body and the platinum electrode as negative electrode, white adipose acid-zinc complex rete appears in zinc surface behind the processing 30min, dries up through nitrogen, this rete promptly is super-hydrophobic state, and surface contact angle is 151.2 ± 3 °.
Embodiment 5
1) matrix cleans: silver matrix is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopt electrochemical method, at 25 ℃ of 0.5mol/LCH
3(CH
2)
16In the ethanolic soln of COOH, apply the 50V volts DS to cleaning between back zinc-base body and the platinum electrode as negative electrode, white adipose acid-zinc complex rete appears in zinc surface behind the processing 60min, dries up through nitrogen, and this rete promptly is super-hydrophobic state.
Embodiment 6
1) matrix cleans: the iron-based body is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopt electrochemical method, at 25 ℃ of 0.5mol/LCH
3(CH
2)
10In the ethanolic soln of COOH, apply the 30V volts DS to cleaning between back zinc-base body and the platinum electrode as negative electrode, white adipose acid-zinc complex rete appears in zinc surface behind the processing 90min, dries up through nitrogen, this rete promptly is super-hydrophobic state, and surface contact angle is 154.0 ± 3 °.
Claims (3)
1. one kind prepares the short-cut method of super hydrophobic film at metal base surface, it is characterized in that:
1) matrix cleans: metallic matrix is used ethanol, washed with de-ionized water surface successively, and nitrogen dries up stand-by;
2) preparation of super hydrophobic film: adopting electrochemical method, is 10 in concentration
-2～1mol/L lipid acid CH
3(CH
2)
nIn the ethanolic soln of COOH (n=10～16),, handle back anode metal matrix surface and lipid acid-metal complex rete occurs, dry up and promptly get super hydrophobic film cleaning the back matrix and applying volts DS as the platinum electrode of negative electrode.
2. prepare the short-cut method of super hydrophobic film by claim 1 is described at metal base surface, it is characterized in that: described step 2), the volts DS that applies is 10～50V, and the time is 30min～2h.
3. prepare the short-cut method of super hydrophobic film by claim 1 is described at metal base surface, it is characterized in that: described metallic matrix is copper, zinc, magnesium, iron or silver.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140659A (en) * | 2011-02-24 | 2011-08-03 | 西北工业大学 | Method for preparing superhydrophobic film |
| CN102618897A (en) * | 2012-04-18 | 2012-08-01 | 西南大学 | Preparation method of magnesium alloy with super-hydrophobic coating on surface |
| CN102634805A (en) * | 2012-05-04 | 2012-08-15 | 西南大学 | Method for preparing magnesium alloy with super-hydrophobic layer on surface |
| CN103088380A (en) * | 2013-02-18 | 2013-05-08 | 哈尔滨工业大学 | Methods for preparing super-hydrophobic coatings on surfaces of magnesium and magnesium alloy |
| CN104651894A (en) * | 2013-11-20 | 2015-05-27 | 中国科学院海洋研究所 | Method for preparing ultra-hydrophobic membrane layer on surface of metal with chilli extract |
| CN104911644A (en) * | 2015-04-15 | 2015-09-16 | 中国石油大学(华东) | Preparation method of superhydrophobic galvanizing coating on steel surface |
| CN104975316A (en) * | 2014-04-02 | 2015-10-14 | 中国科学院海洋研究所 | Method of preventing corrosion resulted from substance deliquescence in atmospheric environments by using super-hydrophobic surface |
| CN105297082A (en) * | 2015-11-05 | 2016-02-03 | 华南理工大学 | Method for preparing super-hydrophobic film layers on metal surfaces through one-step method |
| CN105463461A (en) * | 2015-12-03 | 2016-04-06 | 大连理工大学 | Preparing method of three-dimensional network super-hydrophobic surface |
| CN105568327A (en) * | 2015-12-18 | 2016-05-11 | 西安科技大学 | Electrochemical method for preparing super-hydrophobic surface of copper dendritic crystal |
| CN106835228A (en) * | 2017-01-10 | 2017-06-13 | 华南理工大学 | A kind of preparation method of the controllable super-hydrophobic copper of surface wettability and its alloy |
| CN108940791A (en) * | 2018-08-22 | 2018-12-07 | 中国科学院海洋研究所 | A kind of zinc-base method for preparing super-hydrophobic surface for characteristic of bouncing certainly with condensing droplet |
| CN110129855A (en) * | 2019-06-11 | 2019-08-16 | 南通大学 | A kind of surface treatment method of corrosive protection of aluminium alloy |
| CN110983397A (en) * | 2019-12-19 | 2020-04-10 | 沈阳理工大学 | Method for preparing super-hydrophobic film on surface of aluminum matrix by sodium stearate aqueous solution |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440510A (en) * | 2007-11-21 | 2009-05-27 | 国家纳米科学中心 | Preparation of super-hydrophobic surface for metal anti-corrosive and self-cleaning effects |
-
2010
- 2010-08-27 CN CN 201010268183 patent/CN101935859A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440510A (en) * | 2007-11-21 | 2009-05-27 | 国家纳米科学中心 | Preparation of super-hydrophobic surface for metal anti-corrosive and self-cleaning effects |
Non-Patent Citations (1)
| Title |
|---|
| 《化工学报》 19920430 赵颖力等 工业纯铁表面联苯胺电化学修饰膜的缓蚀作用 第172-177页 第43卷, 第2期 2 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140659A (en) * | 2011-02-24 | 2011-08-03 | 西北工业大学 | Method for preparing superhydrophobic film |
| CN102618897A (en) * | 2012-04-18 | 2012-08-01 | 西南大学 | Preparation method of magnesium alloy with super-hydrophobic coating on surface |
| CN102634805A (en) * | 2012-05-04 | 2012-08-15 | 西南大学 | Method for preparing magnesium alloy with super-hydrophobic layer on surface |
| CN102634805B (en) * | 2012-05-04 | 2014-03-19 | 西南大学 | Method for preparing magnesium alloy with super-hydrophobic layer on surface |
| CN103088380A (en) * | 2013-02-18 | 2013-05-08 | 哈尔滨工业大学 | Methods for preparing super-hydrophobic coatings on surfaces of magnesium and magnesium alloy |
| CN104651894B (en) * | 2013-11-20 | 2017-04-26 | 中国科学院海洋研究所 | Method for preparing ultra-hydrophobic membrane layer on surface of metal with chilli extract |
| CN104651894A (en) * | 2013-11-20 | 2015-05-27 | 中国科学院海洋研究所 | Method for preparing ultra-hydrophobic membrane layer on surface of metal with chilli extract |
| CN104975316A (en) * | 2014-04-02 | 2015-10-14 | 中国科学院海洋研究所 | Method of preventing corrosion resulted from substance deliquescence in atmospheric environments by using super-hydrophobic surface |
| CN104911644A (en) * | 2015-04-15 | 2015-09-16 | 中国石油大学(华东) | Preparation method of superhydrophobic galvanizing coating on steel surface |
| CN105297082A (en) * | 2015-11-05 | 2016-02-03 | 华南理工大学 | Method for preparing super-hydrophobic film layers on metal surfaces through one-step method |
| CN105463461A (en) * | 2015-12-03 | 2016-04-06 | 大连理工大学 | Preparing method of three-dimensional network super-hydrophobic surface |
| CN105568327A (en) * | 2015-12-18 | 2016-05-11 | 西安科技大学 | Electrochemical method for preparing super-hydrophobic surface of copper dendritic crystal |
| CN105568327B (en) * | 2015-12-18 | 2018-06-29 | 西安科技大学 | A kind of electrochemical method for preparing copper dendrite super hydrophobic surface |
| CN106835228A (en) * | 2017-01-10 | 2017-06-13 | 华南理工大学 | A kind of preparation method of the controllable super-hydrophobic copper of surface wettability and its alloy |
| CN108940791A (en) * | 2018-08-22 | 2018-12-07 | 中国科学院海洋研究所 | A kind of zinc-base method for preparing super-hydrophobic surface for characteristic of bouncing certainly with condensing droplet |
| CN110129855A (en) * | 2019-06-11 | 2019-08-16 | 南通大学 | A kind of surface treatment method of corrosive protection of aluminium alloy |
| CN110129855B (en) * | 2019-06-11 | 2021-04-27 | 南通大学 | Surface treatment method for corrosion prevention of aluminum alloy |
| CN110983397A (en) * | 2019-12-19 | 2020-04-10 | 沈阳理工大学 | Method for preparing super-hydrophobic film on surface of aluminum matrix by sodium stearate aqueous solution |
| CN110983397B (en) * | 2019-12-19 | 2022-02-01 | 沈阳理工大学 | Method for preparing super-hydrophobic film on surface of aluminum matrix by sodium stearate aqueous solution |
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Open date: 20110105 |