CN105216295A - A kind of polymer surpasses the preparation method of oleophobic surface - Google Patents
A kind of polymer surpasses the preparation method of oleophobic surface Download PDFInfo
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- CN105216295A CN105216295A CN201510714639.0A CN201510714639A CN105216295A CN 105216295 A CN105216295 A CN 105216295A CN 201510714639 A CN201510714639 A CN 201510714639A CN 105216295 A CN105216295 A CN 105216295A
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Abstract
The invention discloses the preparation method that a kind of polymer surpasses oleophobic surface, it comprises the following steps: preparation has the polymer parts of common micro-nano micro-pillar array; Micro-column structure is carried out swelling softening, the tip portion alcohol solution of part bulge-structure is soaked, make its local suck alcohol solution swelling softening; Pressurizing and deformation, by abundant swelling softening after part take out, apply certain pressure with one piece of smooth flat pressing plate to be pressed in microprotrusion body structure surface and to make its softening part produce irreversible plastic deformation, after distortion, make micro-nano micro-column structure be that the major part of indent hangs the shape that wafts; Pressurize certain hour makes major part microtrabeculae curing molding, is then separated pressing plate and takes out part; Complete the preparation of workpiece.The present invention softens by infiltrating suction alcohol solution to polymer microtrabeculae end, then with pressing plate, softening portion extrusion is made its plastic deformation, forms the outstanding shape head of a nail structure of wafing of major part, builds super oleophobic polymer surfaces.
Description
Technical field
The present invention relates to a kind of super oleophobic surface process technology, particularly relate to the preparation method that a kind of polymer surpasses oleophobic surface.
Background technology
Wetting (Wetting) is that solid interface changes the phenomenon of solid-liquid interface into by solid-air interface.And wetability (wettability) refers to the ability that a kind of liquid is sprawled at a kind of surface of solids or tendentiousness.Wetability is the universal phenomenon that there is occurring in nature, and the phenomenon that such as rainwater forms spherical drop after dropping on lotus leaf surface and tumbles and the self_cleaning effect that lotus leaf " goes out mud and do not contaminate ", be super-hydrophobic phenomenon.In addition the pin of many animals and plants as water skipper, the wing, Rice Leaf etc. of butterfly, also have ultra-hydrophobicity.Research shows, all these surfaces there is superhydrophobic characteristic formed due to micro-nano coarse structure and low-surface energy substance acting in conjunction.
Wetability is also the importance in material science and Surface Engineering field simultaneously, in daily life, industrial production, has many important application in agricultural production.So-called super-hydrophobicly refers to that the static contact angle of water droplet at the surface of solids is more than 150 °, in like manner, super oleophobic and oil droplet at the static contact angle of the surface of solids more than 150 °.But the surface tension of oil droplet is much smaller than the surface tension of water droplet, and therefore, prepare the surface of solids with super fuel shedding quality, its difficulty is larger than super hydrophobic surface, more difficult realization.Correlative study shows, prepare super oleophobic surface in air and, except needing the modification of low-surface-energy molecule, also micro-nano coarse structure will be with to introduce recessed surface curvature on the surface at it, make micro-nano coarse structure be indent or cantilever.This proposes larger challenge to manufacturing process.
At present, a large amount of documents has reported artificial bionic super hydrophobic surface, and these materials are at self-cleaning surface, anti-icing, antifog, anti-pollution, and anticorrosive metal is widely used in fluid drag-reduction.Report about oleophobic surface is relatively less, but super oleophobic surface such as grease proofness coating in industrial and agricultural production, the antifouling process of seawater, petroleum pipeline is grease proofing creeps, and has huge application space in water-oil separating.
So-called Surface Texture (Surfacetexture) refers to that body surface has the array of the patterns such as the pit of certain size and arrangement, indenture or convex closure.The surface with micro-nano-scale microcosmic texture shows distinct feature with smooth surface in surface energy, optical characteristics, bionical characteristic, mechanical property, hydrodynamic characteristics and friction and wear behavior etc., this is filled with new vitality for numerous disciplinary study, and shows huge application potential at many engineering fields.
The preparation method of oleophobic surface follows from bottom to top or top-to-bottom method usually.The process that existing preparation surpasses oleophobic surface mainly contains following several: (1) nothing/have template wet etching (2) femtosecond laser etching method (3) method of electrostatic spinning (4) electrodeposition process (5) sol-gel process etc.
Wherein there is following corresponding defect in said method: (1) can etch silicon and metal surface without template wet etching, and efficiency is high and cost is low, but etching surface morphology controllable is poor, and the method easily obtains super hydrophobic surface, but the not easily super oleophobic surface of acquisition; Oleophobic surface can be obtained by Bosch etching method, but complex process and be only suitable for silicon materials.(2) femtosecond laser etching method can prepare the micro-nano nested structure surface that precision is high, pattern is regular, but this process efficiency is low, be not suitable for extensive manufacture, and equipment is extremely expensive.(3) method of electrostatic spinning is by utilizing micro-/ nano filament at surface construction coarse structure, and easily by controlling to produce oleophobic surface desired structure, but prepared surperficial mechanical mechanics property is poor, and do not possess good wearability etc., service life is shorter; (4) electrodeposition process can plated metal or polymer, efficiently can prepare easily and have micro-nano coarse structure surface, but pattern randomness is strong, wayward, and not easily produces indent or cantilever design.
Summary of the invention
Not enough for prior art, the technical problem to be solved in the present invention is to provide and a kind ofly obtains super oleophobic surface structure and the polymer with excellent abrasive resistance being applicable to quick large-scale production surpasses the preparation method of oleophobic surface.
In order to overcome prior art deficiency, the technical solution used in the present invention is: a kind of polymer surpasses the preparation method of oleophobic surface, and for building super oleophobic surface structure in polymeric substrates, the preparation method that described polymer surpasses oleophobic surface comprises the following steps:
S1, prepare the polymeric material part with common micro-nano micro-pillar array surface texture;
S2, polymer micro-nanometer micro-column structure is carried out swelling softening, the tip portion alcohol solution of part bulge-structure is soaked, makes its local suck alcohol solution swelling softening;
S3, pressurizing and deformation, by abundant swelling softening after part take out, apply certain pressure with one piece of smooth flat pressing plate to be pressed in microprotrusion body structure surface and to make its softening part produce irreversible plastic deformation, after distortion, make micro-nano micro-column structure be that the major part of indent hangs the shape that wafts;
S4, pressurize certain hour make major part microtrabeculae curing molding, are then separated pressing plate and take out part; Complete the preparation of workpiece.
The one surpassing the technical scheme of the preparation method of oleophobic surface as Inventive polymers is improved, and in step s 2, the microtrabeculae of part immerses in alcohol solution towards inversion, makes to be soaked part suction alcohol solution swelling softening.
The one surpassing the technical scheme of the preparation method of oleophobic surface as Inventive polymers is improved, and in step s 2, the microtrabeculae of part, towards inversion, is placed on the cottonseed cake of infiltration alcohol solution, makes microtrabeculae tip portion suck alcohol solution swelling softening.
The one surpassing the technical scheme of the preparation method of oleophobic surface as Inventive polymers is improved, and the infiltration of microtrabeculae top ends is softened between the 1/3-1/2 highly for microtrabeculae height.
The one surpassing the technical scheme of the preparation method of oleophobic surface as Inventive polymers is improved, and the basic configuration of the microtrabeculae of part is cylinder or prism or Elliptic Cylinder.
The invention has the beneficial effects as follows: soften by infiltrating suction alcohol solution to polymer microtrabeculae end, then with pressing plate, softening portion extrusion is made its plastic deformation, form the outstanding shape head of a nail structure of wafing of major part, build super oleophobic polymer surfaces.
Accompanying drawing explanation
Fig. 1 is the Workpiece structure signal constitutional diagram that a kind of polymer of the present invention surpasses each stage of the preparation process of oleophobic surface.
Fig. 2 is the perspective view of the polymeric substrates being built with super oleophobic surface.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention are specifically described.
Fig. 1 illustrates the structure in each stage of workpiece in technical process of the present invention, a kind of polymer of the present invention surpasses the preparation method of oleophobic surface, for building super oleophobic surface structure in polymeric substrates 1, the preparation method that described polymer surpasses oleophobic surface comprises the following steps:
S1, prepare the polymeric material part 1 with common micro-nano micro-pillar array 11 surface texture; The polymer parts 1 with micro-pillar array 11 surface can be obtained by general means.
S2, polymer micro-nanometer micro-column structure is carried out swelling softening, the tip portion alcohol solution 2 of part 1 bulge-structure and micro-pillar array 11 is soaked, makes its local suck alcohol solution 2 swelling softening; Swelling softening shaping structure can be avoided bonding with instrument, ensures the clean and tidy structural integrity with maintaining product of processing.
S3, pressurizing and deformation, by abundant swelling softening after part take out, apply certain pressure with one piece of smooth flat pressing plate 3 to be pressed in microprotrusion structure and micro-pillar array 11 surface and to make its softening part produce irreversible plastic deformation, make micro-nano micro-column structure be the outstanding shape that wafts of major part of indent after distortion, form the structure with super fuel shedding quality.
S4, pressurize certain hour make major part microtrabeculae curing molding complete plastic deformation, are then separated pressing plate 3 and take out part 1; Complete the preparation of workpiece.
Preparation technology of the present invention softens by infiltrating suction alcohol solution to polymer microtrabeculae end, then with pressing plate, softening portion extrusion is made its plastic deformation, forms the outstanding shape head of a nail 4 structure of wafing of major part, as shown in Figure 2, builds super oleophobic polymer surfaces.
More preferably, in step s 2, the microtrabeculae of part immerses in alcohol solution towards inversion, make to be soaked part suction alcohol solution swelling softening, mode that microtrabeculae end infiltrates that to be a kind of be, will keep the invasive depth of each microtrabeculae, the strict position relationship controlled between liquid level and microtrabeculae in process.
More preferably, in step s 2, the microtrabeculae of part is towards inversion, be placed on the cottonseed cake of infiltration alcohol solution, microtrabeculae tip portion is made to suck alcohol solution swelling softening, the infiltration height of microtrabeculae can being controlled preferably, changing the insert depth of microtrabeculae by applying pressure to workpiece, thus control neatly to infiltrate size.
More preferably, the infiltration of microtrabeculae top ends is softened between the 1/3-1/2 highly for microtrabeculae height, can form the specification of the head of a nail structure meeting super oleophobic, original shape that can maintain again microtrabeculae is avoided being damaged, and the microtrabeculae that spacing is slightly large needs to select larger invasive depth and end deflection.
More preferably, the basic configuration of the microtrabeculae of part is cylinder or prism or Elliptic Cylinder, can swelling compressing deformation construction major part mushroom body or head of a nail body, thus forms super oleophobic surface texture.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (5)
1. polymer surpasses a preparation method for oleophobic surface, and for building super oleophobic surface structure in polymeric substrates, it is characterized in that, the preparation method that described polymer surpasses oleophobic surface comprises the following steps:
S1, prepare the polymeric material part with common micro-nano micro-pillar array surface texture;
S2, polymer micro-nanometer micro-column structure is carried out swelling softening, the tip portion alcohol solution of part bulge-structure is soaked, makes its local suck alcohol solution swelling softening;
S3, pressurizing and deformation, by abundant swelling softening after part take out, apply certain pressure with one piece of smooth flat pressing plate to be pressed in microprotrusion body structure surface and to make its softening part produce irreversible plastic deformation, after distortion, make micro-nano micro-column structure be that the major part of indent hangs the shape that wafts;
S4, pressurize certain hour make major part microtrabeculae curing molding, are then separated pressing plate and take out part; Complete the preparation of workpiece.
2. polymer according to claim 1 surpasses the preparation method of oleophobic surface, it is characterized in that: in step s 2, and the microtrabeculae of part immerses in alcohol solution towards inversion, makes to be soaked part suction alcohol solution swelling softening.
3. polymer according to claim 1 surpasses the preparation method of oleophobic surface, it is characterized in that: in step s 2, and the microtrabeculae of part, towards inversion, is placed on the cottonseed cake of infiltration alcohol solution, makes microtrabeculae tip portion suck alcohol solution swelling softening.
4. the polymer according to Claims 2 or 3 surpasses the preparation method of oleophobic surface, it is characterized in that: the infiltration of microtrabeculae top ends is softened between the 1/3-1/2 highly for microtrabeculae height.
5. polymer according to claim 1 surpasses the preparation method of oleophobic surface, it is characterized in that: the basic configuration of the microtrabeculae of part is cylinder or prism or Elliptic Cylinder.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048665A (en) * | 2016-07-07 | 2016-10-26 | 广东工业大学 | Method for preparing metal-base super-oleophobic composite casting layer by using hot compression deformation process |
| CN106086944A (en) * | 2016-07-07 | 2016-11-09 | 广东工业大学 | A kind of method preparing the superoleophobic compound cast layer of Metal Substrate based on swelling effect |
| CN112250033A (en) * | 2020-09-29 | 2021-01-22 | 江苏大学 | Super-oleophobic surface preparation method based on structure dipping-in-situ dragging forming |
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| CN103030104A (en) * | 2012-12-25 | 2013-04-10 | 江苏大学 | Two-step forming method for producing ultra-oleophobic surface |
| CN103551051A (en) * | 2013-11-01 | 2014-02-05 | 无锡海特新材料研究院有限公司 | Manufacturing method of super-hydrophobic composite membrane |
| CN104002474A (en) * | 2014-05-12 | 2014-08-27 | 华南理工大学 | Preparation method and application of super-hydrophobic and adhesion-adjustable surface with micro-nano composite structure |
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| CN103030104A (en) * | 2012-12-25 | 2013-04-10 | 江苏大学 | Two-step forming method for producing ultra-oleophobic surface |
| CN103551051A (en) * | 2013-11-01 | 2014-02-05 | 无锡海特新材料研究院有限公司 | Manufacturing method of super-hydrophobic composite membrane |
| CN104002474A (en) * | 2014-05-12 | 2014-08-27 | 华南理工大学 | Preparation method and application of super-hydrophobic and adhesion-adjustable surface with micro-nano composite structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048665A (en) * | 2016-07-07 | 2016-10-26 | 广东工业大学 | Method for preparing metal-base super-oleophobic composite casting layer by using hot compression deformation process |
| CN106086944A (en) * | 2016-07-07 | 2016-11-09 | 广东工业大学 | A kind of method preparing the superoleophobic compound cast layer of Metal Substrate based on swelling effect |
| CN112250033A (en) * | 2020-09-29 | 2021-01-22 | 江苏大学 | Super-oleophobic surface preparation method based on structure dipping-in-situ dragging forming |
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Application publication date: 20160106 |