CN102102199A - Method for preparing fluorine-free superhydrophobic copper surface - Google Patents
Method for preparing fluorine-free superhydrophobic copper surface Download PDFInfo
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- CN102102199A CN102102199A CN2009101177489A CN200910117748A CN102102199A CN 102102199 A CN102102199 A CN 102102199A CN 2009101177489 A CN2009101177489 A CN 2009101177489A CN 200910117748 A CN200910117748 A CN 200910117748A CN 102102199 A CN102102199 A CN 102102199A
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Abstract
The invention discloses a method for preparing a fluorine-free superhydrophobic copper surface, which comprises the following steps of: immersing a copper block in silver nitrate solution, and immersing the copper block in ethanol solution of octadecyl mercaptan to obtain the fluorine-free superhydrophobic copper surface. The contact angle and the sliding angle of the superhydrophobic copper surface are 169 degrees and 3 degrees respectively, superhydrophobicity can be kept stable at the temperature of between room temperature and -20 DEG C under the acidic and alkaline condition for a long time, and the superhydrophobic copper surface can be used for the pollution prevention, rust prevention, self-cleaning application and the like of a metal copper surface.
Description
Technical field
The invention discloses the preparation method on a kind of floride-free super-hydrophobic copper surface, it is 3 ° that the super-hydrophobic copper surface contact angle of preparation can reach 169 °, slide angle, and can keep the super-hydrophobicity long-term stability to subzero 20 ℃ and acid-basicity condition in room temperature.
Background technology
Super hydrophobic surface generally is meant and the contact angle of the water surface greater than 150 °, because water droplet can not be in the stable stop of super hydrophobic surface, be easy to tumble and do not stay any vestige, and lip-deep molecule can be taken away, have the self-cleaning function similar to lotus leaf surface from the surface.Therefore super hydrophobic surface all is with a wide range of applications in fields such as outdoor antenna, exterior coating, steamer, biologic medical apparatus, windshields.It can be used for snow defence, anti-pollution, anti-oxidant, drag reduction noise reduction and prevent conduction of current etc.At present, the preparation super hydrophobic surface generally need satisfy the requirement that surface tissue and surface chemistry are formed two aspects, promptly constructs the micro-nano bilayer structure on the surface and reduces surface energy.In present most of super hydrophobic surface preparation, fluoropolymer is used to reduce surface energy to reach the purpose that makes up super hydrophobic surface; But because fluorinated polymkeric substance synthesis condition harshness, cost is higher, and can pollute environment, therefore prepares the extensive concern that floride-free environmentally friendly super hydrophobic surface has caused researcher.Chinese patent CN200810056012 earlier with superpower sputtering instrument deposition layer of metal copper film, adopts the small power sputtering method that the metallic copper film surface is carried out sputtering sedimentation at solid surface then; Can obtain super hydrophobic surface after the deposition, and keep excellent conducting performance simultaneously.But need carry out electroless plating, cause complex process, cost is higher and practicality is relatively poor.Chinese patent 200910077832 utilizes low-voltage oxidation process at copper surface preparation based superhydrophobic thin films, though also can reach ultra-hydrophobicity, could realize under the low pressure condition, and processing condition are harsh; And this patent is not narrated the permanent stability of this kind metal copper film under the acid-alkali medium condition.
Summary of the invention
The object of the present invention is to provide the preparation method on a kind of floride-free super-hydrophobic copper surface, characteristics such as this method has that raw material is easy to get, technology is simple, with low cost and environmental friendliness.
The preparation method on a kind of floride-free super-hydrophobic copper surface is characterized in that copper billet is immersed after polishing, ultrasonic cleaning in the silver nitrate solution, and taking-up is cleaned clean with distilled water and dried; Again copper billet is immersed in the ethanolic soln of stearylmercaptan, soak the back and take out, clean clean and dry, obtain floride-free super-hydrophobic copper surface with dehydrated alcohol.
The concentration of silver nitrate solution of the present invention is 0.01～0.05mol/l, and dipping time is 10～300 seconds; After the immersion, the nano-silver layer of copper billet surface deposition one deck 10-30 micron, with the growth of soak time, surface topography becomes penniform oldered array from nano-Ag particles.
The ethanolic soln concentration of stearylmercaptan of the present invention is 0.1～0.5mol/l, and dipping time is 5～60 minutes.Because silver atoms can form chemical bond with sulphur atom in the mercaptan, thus in the silver particles surface-assembled the hydrophobic thiol molecule of one deck.Compare with general self-assembly,, make this surface have stability preferably owing to have chemical bond between silver-colored sulphur atom.
Physical and chemical index of the present invention is as follows:
156～169 ° of Japan of contact angle (with water) produce the contact angle instrument
Acid resistance (25 ℃, pH1-6HCL) no change GB1763-79
Alkali resistance (25 ℃, pH8-13NaOH) no change GB1763-79
Lower temperature resistance (20 ℃, 168h) no change
The raw materials cost that the present invention utilizes is low, environmental protection is pollution-free, the floride-free super-hydrophobic copper surface of preparation can keep stable ultra-hydrophobicity and effect under acid-alkali medium and cold condition, can be used for the aspects such as antifouling, antirust and automatically cleaning application of copper surface.
Embodiment
Embodiment 1:
With copper billet through polishing, soaked after the ultrasonic cleaning in the silver nitrate solution of 0.01～0.05mol/l 10～20 seconds.Taking-up cleans up with distilled water and dries; Copper billet is immersed in the ethanolic soln of stearylmercaptan of 0.1～0.5mol/l, soaks after 5～60 minutes and take out, clean up, dry with dehydrated alcohol, the surface topography of preparing is the small-particle about in 100 meter.In the copper billet surface, its contact angle is that 148 °, slide angle are 10 ° with the distillation water droplet of 5 μ L.
Embodiment 2:
With copper billet through polishing, immersed after the ultrasonic cleaning in the silver nitrate solution of 0.01～0.05mol/l 20～30 seconds.Taking-up cleans up with distilled water and dries; Copper billet is immersed in the ethanolic soln of stearylmercaptan of 0.1～0.5mol/l, soaks after 5～60 minutes and take out, clean up, dry with dehydrated alcohol, the surface topography of preparing is coralloid structure, and silver-colored particle grain size becomes greatly.In the copper billet surface, its contact angle is that 156 °, slide angle are 5 ° with the distillation water droplet of 5 μ L.
Embodiment 3:
With copper billet through polishing, immersed after the ultrasonic cleaning in the silver nitrate solution of 0.01～0.05mol/l 30～50 seconds.Taking-up cleans up with distilled water and dries; Copper billet is immersed in the ethanolic soln of stearylmercaptan of 0.1～0.5mol/l, soak after 5～60 minutes and take out, clean up, dry with dehydrated alcohol, the surface topography of preparing is penniform pine-tree structure, and the silver-colored particle ordered arrangement of every branch about by 100 nanometers forms.In the copper billet surface, its contact angle is that 169 °, slide angle are 3 ° with the distillation water droplet of 5 μ L.Investigate the dielectric stability of this sample and temperature stability as can be known, the contact angle of this sample is in the scope of 1-13 at the pH value of water droplet, can both keep stable, and under subzero 20 ℃ of conditions, keeps after 168 hours, and its contact angle does not have considerable change yet.
Embodiment 4:
With copper billet through polishing, immersed after the ultrasonic cleaning in the silver nitrate solution of 0.01～0.05mol/l 60～120 seconds.Taking-up cleans up with distilled water and dries.The gained copper billet is immersed in the ethanolic soln of stearylmercaptan of 0.1～0.5mol/l, soaks taking-up after 5～60 minutes, clean up, dry with dehydrated alcohol.The surface topography of preparing is penniform pine-tree structure, and the silver-colored particle ordered arrangement of every branch about by 100 nanometers forms.In the copper billet surface, its contact angle is that 164 °, slide angle are 3 ° with the distillation water droplet of 5 μ L.
Claims (3)
1. the preparation method on a floride-free super-hydrophobic copper surface is characterized in that copper billet is immersed after polishing, ultrasonic cleaning in the silver nitrate solution, and taking-up is cleaned clean with distilled water and dried; Again copper billet is immersed in the ethanolic soln of stearylmercaptan, soak the back and take out, clean clean and dry, obtain floride-free super-hydrophobic copper surface with dehydrated alcohol.
2. the method for claim 1, the concentration that it is characterized in that silver nitrate solution is 0.01～0.05mol/l, dipping time is 10～300 seconds.
3. the method for claim 1, the ethanolic soln concentration that it is characterized in that stearylmercaptan is 0.1～0.5mol/l, dipping time is 5～60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101177489A CN102102199A (en) | 2009-12-18 | 2009-12-18 | Method for preparing fluorine-free superhydrophobic copper surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101177489A CN102102199A (en) | 2009-12-18 | 2009-12-18 | Method for preparing fluorine-free superhydrophobic copper surface |
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| CN102102199A true CN102102199A (en) | 2011-06-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380470A (en) * | 2011-11-09 | 2012-03-21 | 西北师范大学 | Electrochemical deposition method for preparing super-hydrophobic and super-oleophilic surface |
| CN102925877A (en) * | 2012-11-13 | 2013-02-13 | 中国科学院化学研究所 | Hollow-out container with special invasion and preparation method and application of hollow-out container |
| CN104357827A (en) * | 2014-11-03 | 2015-02-18 | 中国石油大学(华东) | Preparation method for super-hydrophobic corrosion-resistant copper-based surface |
| CN105129836A (en) * | 2015-08-19 | 2015-12-09 | 中国科学院兰州化学物理研究所 | Preparation method for needle-like semiconductor gas-sensitive sensing material |
| CN106283133A (en) * | 2016-09-06 | 2017-01-04 | 吉林大学 | A kind of preparation method of bionical oil-water separation copper foam |
-
2009
- 2009-12-18 CN CN2009101177489A patent/CN102102199A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380470A (en) * | 2011-11-09 | 2012-03-21 | 西北师范大学 | Electrochemical deposition method for preparing super-hydrophobic and super-oleophilic surface |
| CN102925877A (en) * | 2012-11-13 | 2013-02-13 | 中国科学院化学研究所 | Hollow-out container with special invasion and preparation method and application of hollow-out container |
| CN102925877B (en) * | 2012-11-13 | 2015-07-08 | 中国科学院化学研究所 | Hollow-out container with special invasion and application of hollow-out container |
| CN104357827A (en) * | 2014-11-03 | 2015-02-18 | 中国石油大学(华东) | Preparation method for super-hydrophobic corrosion-resistant copper-based surface |
| CN105129836A (en) * | 2015-08-19 | 2015-12-09 | 中国科学院兰州化学物理研究所 | Preparation method for needle-like semiconductor gas-sensitive sensing material |
| CN106283133A (en) * | 2016-09-06 | 2017-01-04 | 吉林大学 | A kind of preparation method of bionical oil-water separation copper foam |
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Application publication date: 20110622 |