CN113831574A - Film, wettability and light transmittance dual reversible conversion method and preparation method - Google Patents
Film, wettability and light transmittance dual reversible conversion method and preparation method Download PDFInfo
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- CN113831574A CN113831574A CN202111344907.6A CN202111344907A CN113831574A CN 113831574 A CN113831574 A CN 113831574A CN 202111344907 A CN202111344907 A CN 202111344907A CN 113831574 A CN113831574 A CN 113831574A
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- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
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Abstract
The invention discloses a film, a wettability and light transmittance dual reversible conversion method and a preparation method, belonging to the technical field of laser application, wherein the preparation method comprises the following steps: providing a polytetrafluoroethylene film, and preparing a micro-nano structure on the surface of the polytetrafluoroethylene film in a laser processing mode, wherein the size of the micro-nano structure is 100nm-20 mu m; the surface of the polytetrafluoroethylene film with the micro-nano structure is wetted or dried by adopting a hydrophilic organic solvent, and the wettability and the light transmittance of the surface of the film can be reversely converted at the same time. According to the invention, the laser processing technology is adopted to process the surface of the polytetrafluoroethylene to prepare the micro-nano structure, and the wetting property and the transparency of the material can be subjected to double conversion after the organic solvent such as ethanol is adopted for wetting or drying.
Description
Technical Field
The invention relates to the technical field of laser application, in particular to a method for simultaneously carrying out double reversible transformation on wettability and light transmittance of a thin film by using a physical method.
Background
In recent decades, the surface modification of materials has been widely studied, how to change the wettability of the material surface and make the material realize the conversion from hydrophilic to hydrophobic, which has great application prospects in the aspects of reducing water resistance, surface cleaning, surface corrosion prevention and the like. The wettability of the material surface is mainly determined by the surface chemical components and the microscopic geometry of the material, when the material surface forms a micro-nano structure, the contact model of liquid drops and the solid surface is changed, and the wettability of the material surface is correspondingly changed. At present, the simultaneous conversion of wettability and light transmittance into multifunctional applications provides new opportunities, such as temperature adjustment, visibility adjustment, and the like.
In view of this, according to the technical disclosure disclosed in the paper of Temperature-drive switching of water addition on organic gel surface, Jiang et al prepared an organogel using the phase transition property of normal paraffin, which was capable of changing the adhesiveness and transparency of water in response to thermal stimulation; in a paper of controlled fibrous and optical transport and comfort switching of temperature-activated soluble/liquid-impregnated nanoparticles, Shiratiori et al developed a temperature-activated curable/liquid paraffin injected onto porous surfaces, the transparency of which was manipulated simultaneously with the movement of water droplets. Smart surfaces that react to external stimuli often need to acquire the external stimuli at any time in order to achieve simultaneous switching of multiple properties, thus limiting their widespread use. Most of the surface modification of materials is realized by chemical methods, and various problems exist, such as harsh processing environment, limited processing materials, long time consumption, complex procedures and the like.
In view of the above, it is necessary to provide a thin film and a method for manufacturing the same, which have dual reversible transformation of wettability and transmittance.
Disclosure of Invention
The invention mainly aims to provide a wettability and light transmittance dual reversible conversion film and a preparation method thereof, and aims to solve the problems of complex preparation procedure, long time consumption and limited processing materials of the existing material surface modification method. In order to achieve the above object, the present invention provides a method for preparing a dual reversible thin film with wettability and transmittance, comprising the steps of:
s1, ablating a micro-nano structure on the surface of the polytetrafluoroethylene film in a laser processing mode, wherein the size of the micro-nano structure is 100nm-20 mu m;
and S2, providing a hydrophilic organic solvent, and wetting or drying the surface of the polytetrafluoroethylene film with the micro-nano structure processed in the step S1 by using the hydrophilic organic solvent so as to perform reversible conversion on the wettability and the light transmittance of the surface of the polytetrafluoroethylene film with the micro-nano structure at the same time.
Preferably, the laser processing in step S1 includes: and processing a porous pattern on the surface of the polytetrafluoroethylene film by using a laser beam.
Preferably, the scan path of the porous pattern comprises a plurality of equally spaced transverse lines.
Preferably, the spacing between two adjacent transverse lines is 5-20 microns.
Preferably, the size of the micro-nano structure is 100nm-18 μm.
Preferably, the pulse frequency of the laser processing is 50-800kHz, the processing speed of the laser processing is 100-2000mm/s, the output power of the laser processing is 3-8W, the pulse width of the laser processing is 200fs-20ns, the wavelength of the laser processing is 1030nm, the pulse duration of the laser processing is 350fs, and the repetition frequency of the laser processing is 50-200 kHz.
Preferably, the hydrophilic organic solvent is one or more selected from ethanol, acetone, methanol or isopropanol.
The invention also provides a wettability and light transmittance dual reversible conversion film, which comprises the polytetrafluoroethylene film with the micro-nano structure prepared by the preparation method and the hydrophilic organic solvent.
The invention also provides a double reversible conversion method of wettability and light transmittance of the film, which comprises the following steps:
providing a polytetrafluoroethylene film, and processing the polytetrafluoroethylene film by adopting the preparation method to obtain the polytetrafluoroethylene film with the micro-nano structure;
and wetting or drying the polytetrafluoroethylene film surface with the micro-nano structure by using the hydrophilic organic solvent so as to simultaneously perform reversible conversion on the wettability and the light transmittance of the polytetrafluoroethylene film surface with the micro-nano structure.
Compared with the prior art, the film, the wettability and light transmittance dual reversible conversion method and the preparation method provided by the invention have the following beneficial effects:
the invention provides a film, a wettability and light transmittance dual reversible conversion method and a preparation method, which comprise the following steps: providing a polytetrafluoroethylene film, and preparing a micro-nano structure on the surface of the polytetrafluoroethylene film in a laser processing mode, wherein the size of the micro-nano structure is 100nm-20 mu m; the surface of the polytetrafluoroethylene film with the micro-nano structure is wetted or dried by adopting a hydrophilic organic solvent, and the wettability and the light transmittance of the surface of the polytetrafluoroethylene film with the micro-nano structure can be reversely converted at the same time. According to the invention, the laser processing technology is adopted to process the surface of the polytetrafluoroethylene to prepare the micro-nano structure, and the wetting property and the transparency of the material can be doubly converted after the organic solvent such as ethanol is adopted for wetting or drying.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a flow chart of a method for fabricating a dual reversible thin film with wettability and transmittance according to an embodiment of the present invention;
FIG. 2 is a schematic view of a laser machining apparatus in an embodiment of the present invention;
FIG. 3 is a scanning electron microscope image of the surface of the polytetrafluoroethylene film before laser processing, wherein a is a scanning electron microscope image of the surface of the polytetrafluoroethylene film before laser processing, and b is a scanning electron microscope image of the surface of the polytetrafluoroethylene film after laser processing according to an embodiment of the invention;
FIG. 4 is a graph of the visible light transmittance of the polytetrafluoroethylene film before laser processing, b is a graph of the visible light transmittance of the polytetrafluoroethylene film after laser processing without being wetted by ethanol, and c is a graph of the visible light transmittance of the polytetrafluoroethylene film after laser processing wetted by ethanol, according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a water contact angle model of the surface of a polytetrafluoroethylene film according to the present invention, wherein a is a schematic diagram of a water contact angle of the polytetrafluoroethylene film before laser processing, b is a schematic diagram of a water contact angle of the polytetrafluoroethylene film after laser processing when the polytetrafluoroethylene film is not wetted by ethanol, and c is a schematic diagram of a water contact angle of the polytetrafluoroethylene film after laser processing when the polytetrafluoroethylene film is wetted by ethanol.
Description of the drawings:
a laser 1; a first reflector 2; a second mirror 3; a third reflector 4; a galvanometer 5; processing sample 6; a computer 7; and a dust suction device 8.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a method for preparing a dual reversible thin film with wettability and transmittance, comprising the steps of: s1, ablating a micro-nano structure on the surface of the polytetrafluoroethylene film in a laser processing mode, wherein the size of the micro-nano structure is 100nm-20 mu m; and S2, providing a hydrophilic organic solvent, and wetting or drying the polytetrafluoroethylene film surface with the micro-nano structure processed in the step S1 by using the hydrophilic organic solvent so as to perform reversible conversion on the wettability and the light transmittance of the polytetrafluoroethylene film surface with the micro-nano structure at the same time.
Specifically, in a specific example, the thickness of the teflon film may be 0.1mm, the laser may be one or more of a pulsed laser or a femtosecond laser, and the laser processing parameters may be selected from the following ranges: the pulse frequency is 50-800kHz, the processing speed is 100-2000mm/s, the output power is 3-8W, the pulse width is 200fs-20ns, the wavelength is 1030nm, the pulse duration is 350fs, and the repetition frequency is 50-200 kHz.
In detail, the laser processing mode comprises the step of processing a porous pattern on the surface of the polytetrafluoroethylene film through a laser beam, the porous pattern can be a regular or irregular porous pattern, the porous pattern can be processed by multiple laser processing modes, the laser processing mode comprises laser linear continuous scanning or discontinuous scanning processing, the specific processing mode can be selected according to actual conditions, only a micro-nano structure needs to be processed, and the micro-nano structure comprises a groove and a protrusion to form the porous pattern.
In this embodiment, a porous pattern is formed on the surface of the teflon film, the porous pattern is formed by scanning line by laser, the scanning path of the porous pattern is in a shape of a bow, the scanning path of the porous pattern comprises a plurality of equally spaced transverse lines, and the spacing between two adjacent transverse lines can be 5-20 μm.
Referring to fig. 2, a specific laser processing apparatus can be selected according to actual needs, in this embodiment, a laser processing apparatus is adopted, which includes a laser 1, a first reflector 2, a second reflector 3, a third reflector 4, a vibrating mirror 5, a processing platform, a computer 7, and a dust collector 8, the laser 1, the reflectors, the processing platform, and the computer 7 are sequentially placed on the same plane, the vibrating mirror 5 is located above the processing platform, the dust collector 8 is located at the edge of the processing platform and the vibrating mirror 5 and is communicated with the outside air, the using method is that a laser beam firstly comes out from the laser 1, passes through the first reflector 2, the second reflector 3, and the third reflector 4 to enter the vibrating mirror 5, and finally is focused on the surface of a processed sample 6, parameters such as a processed graph and energy frequency are drawn and set by the computer 7, and simultaneously, in the whole processing process, the dust removing device 8 is always in an operating state.
In step S1, a micro-nano structure is ablated on the surface of the polytetrafluoroethylene film in a laser processing mode, and the size of the micro-nano structure is 100nm-20 microns.
Referring to fig. 3, an example of preparing a dual reversible thin film with wettability and transmittance according to an embodiment of the present invention is shown, wherein the laser processing parameters are: the pulse width is 250fs, the pulse repetition frequency is 75kHz, the center wavelength is 1030nm, the output power is 4W, the scanning interval is 10 mu m, and the processing speed is 200 mm/s. As can be seen from FIG. 3-a, the PTFE surface was relatively flat before laser machining; after laser processing is carried out, a micro-nano structure is processed on the surface of the polytetrafluoroethylene film, as can be seen from the graph 3-b, the size of the micro-nano structure is 0.1-18 micrometers, the micro-nano structure is composed of a plurality of micro-scale wavy ridges and cave-shaped structures, the height is about 2-18 micrometers, the width is about 0.1-15 micrometers, the wavy ridges are composed of a plurality of coral-shaped structures, and the width of the coral-shaped structures is about 0.1-8 micrometers.
In step S2, a hydrophilic organic solvent is provided, and the surface of the ptfe film with the micro-nano structure processed in step S1 is wetted or dried with the hydrophilic organic solvent, so that the wettability and the light transmittance of the surface of the ptfe film with the micro-nano structure are reversibly switched at the same time.
Specifically, the hydrophilic organic solvent is that a large number of micropores are distributed on the surface of the processed polytetrafluoroethylene film with the micro-nano structure, the surface energy of the polytetrafluoroethylene film is low, the polytetrafluoroethylene film has hydrophobicity, and the polytetrafluoroethylene film can be infiltrated by a hydrophilic organic solvent with small surface tension, such as ethanol, acetone, methanol, isopropanol or cyclohexane, and in this embodiment, ethanol is selected as an experimental reagent.
Referring to fig. 4 and 5, still referring to the above embodiment, before laser ablation, the surface of the raw ptfe film shows hydrophobicity with a water contact angle of 99 degrees, after laser ablation, the surface of the processed ptfe film shows superhydrophobicity with a water contact angle of 151.6 degrees, ethanol has a large number of hydrophilic hydroxyl groups, and because the similar phase dissolution principle is that it is soluble in ethanol, the wetted surface of the ptfe film shows superhydrophilicity with a water contact angle of 5.2 degrees, and when the surface of the ptfe film is dried or self-volatilized, it returns to superhydrophobicity, and the water contact angle returns to 151.6 degrees.
At the same time, the reversible conversion of the light transmittance is due to their different intrinsic optical properties. At visible-near infrared wavelength, the laser processed polytetrafluoroethylene film has larger refractive index contrastI.e. deltan＝nPTFE-nAir (a)The finished teflon film was allowed to effectively scatter visible light and exhibited low light transmittance when the value was 1.37-1 was 0.37. When pores of the polytetrafluoroethylene film are wetted by ethanol, the refractive index contrast is sharply reduced, and delta at the momentn＝nPTFE-nEthanol1.37-1.36-0.01, resulting in low scattering at the surface of the ptfe film, which in turn exhibits high light transmittance, i.e., transparency. Wherein n is the refractive index of the sun, DeltanFor refractive index contrast, nPTFEIs the refractive index of the polytetrafluoroethylene film, nAir (a)In order to have a refractive index in air, nEthanolThe refractive index of ethanol.
The optical properties of these surfaces were studied by a UV-vis spectrophotometer, and the light transmittances of the surfaces of the teflon films wetted with ethanol before, after and after laser processing were 88.81%, 56.44% and 84.75%, respectively, at 800 nm. In short, the polytetrafluoroethylene film before laser processing is transparent and has relatively high light transmittance, while the surface of the polytetrafluoroethylene film after laser processing is white and has relatively low light transmittance, and after being wetted by ethanol, the light transmittance of the surface of the polytetrafluoroethylene film is obviously increased and the polytetrafluoroethylene film has a transparent appearance. When the surface was dried again, the low light transmittance was recovered and the light transmittance was recovered to 56.44%.
The results show that the surface of the polytetrafluoroethylene film with the micro-nano structure after laser processing can simultaneously control double reversible transformation of wettability and transparency through organic solvents such as ethanol and the like. It should be understood that the laser processing technology is adopted to process the polytetrafluoroethylene surface to form a micro-nano structure, and after organic solvents such as ethanol and the like are adopted for wetting or drying, the wettability and the transparency of the film can be simultaneously converted, and the method is simple and rapid, the preparation procedure is simple, environment-friendly and efficient, and the applicability is wide.
In an embodiment of the invention, the invention further provides a wettability and light transmittance dual reversible conversion film, which comprises the polytetrafluoroethylene film with the micro-nano structure prepared by the preparation method and the hydrophilic organic solvent.
In an embodiment of the present invention, a method for reversibly transforming wettability and transmittance of a thin film is further provided, which includes the steps of:
providing a polytetrafluoroethylene film, and processing the polytetrafluoroethylene film by adopting the preparation method to obtain the polytetrafluoroethylene film with the micro-nano structure;
and wetting or drying the polytetrafluoroethylene film surface with the micro-nano structure by using the hydrophilic organic solvent so as to simultaneously perform reversible conversion on the wettability and the light transmittance of the polytetrafluoroethylene film surface with the micro-nano structure.
The present invention will be further illustrated with reference to the following examples, but the present invention is not limited to the following examples.
Example 1
(1) Selecting a polytetrafluoroethylene film with the thickness of 0.1mm, wherein the water contact angle of the polytetrafluoroethylene film is 99 degrees, and the light transmittance is 88 percent;
(2) the surface of the polytetrafluoroethylene film is processed with a micro-nano structure by a laser direct writing method, the processed water contact angle is 151.6 degrees, and the light transmittance at the wavelength of 800nm is 56.44 percent; wherein the laser processing parameters are as follows: the pulse width is 250fs, the pulse repetition frequency is 75kHz, the central wavelength is 1030nm, the output power is 4W, the scanning interval is 10 mu m, and the processing speed is 200 mm/s;
(3) wetting the surface of the processed polytetrafluoroethylene film by using ethanol, wherein the wetted water contact angle is 5.2 degrees, and the light transmittance at the wavelength of 800nm is 84.75 percent;
(4) after the surface of the polytetrafluoroethylene film is dried or self-volatilized, the contact angle of water after drying is 151.6 degrees, and the light transmittance at the wavelength of 800nm is 56.44 percent.
Example 2
(1) Selecting a polytetrafluoroethylene film with the thickness of 0.1mm, wherein the water contact angle of the polytetrafluoroethylene film is 99 degrees, and the light transmittance is 88 percent;
(2) the surface of the polytetrafluoroethylene film is processed with a micro-nano structure by a laser direct writing method, the processed water contact angle is 151 degrees, and the light transmittance at the wavelength of 800nm is 61 percent; wherein the laser processing parameters are as follows: the pulse width is 250fs, the pulse repetition frequency is 75kHz, the central wavelength is 1030nm, the output power is 4W, the scanning interval is 10 mu m, and the processing speed is 600 mm/s;
(3) wetting the surface of the processed polytetrafluoroethylene film by using ethanol, wherein the wetted water contact angle is 5.2 degrees, and the light transmittance at the wavelength of 800nm is 84%;
(4) after the surface of the wetted polytetrafluoroethylene film is dried or self-volatilized, the contact angle of water after drying is 151 degrees, and the light transmittance at the wavelength of 800nm is 61 percent.
Example 3
(1) Selecting a polytetrafluoroethylene film with the thickness of 0.1mm, wherein the water contact angle of the polytetrafluoroethylene film is 99 degrees, and the light transmittance is 88 percent;
(2) the surface of the polytetrafluoroethylene film is processed with a micro-nano structure by a laser direct writing method, the processed water contact angle is 149 degrees, and the light transmittance at the wavelength of 800nm is 63 percent; wherein the laser processing parameters are as follows: the pulse width is 250fs, the pulse repetition frequency is 75kHz, the central wavelength is 1030nm, the output power is 4W, the scanning interval is 10 mu m, and the processing speed is 1000 mm/s;
(3) wetting the surface of the processed polytetrafluoroethylene film by using ethanol, wherein the wetted water contact angle is 5.6 degrees, and the light transmittance at the wavelength of 800nm is 83.8 percent;
(4) after the surface of the wetted polytetrafluoroethylene film is dried or self-volatilized, the contact angle of water after drying is 149 degrees, and the light transmittance at the wavelength of 800nm is 63 percent.
Example 4
(1) Selecting a polytetrafluoroethylene film with the thickness of 0.1mm, wherein the water contact angle of the polytetrafluoroethylene film is 99 degrees, and the light transmittance is 88 percent;
(2) the surface of the polytetrafluoroethylene film is processed with a micro-nano structure by a laser direct writing method, the processed water contact angle is 146 degrees, and the light transmittance at the wavelength of 800nm is 64 percent; wherein the laser processing parameters are as follows: the pulse width is 250fs, the pulse repetition frequency is 75kHz, the central wavelength is 1030nm, the output power is 4W, the scanning interval is 10 mu m, and the processing speed is 2000 mm/s;
(3) wetting the surface of the processed polytetrafluoroethylene film by using ethanol, wherein the wetted water contact angle is 5.9 degrees, and the light transmittance at the wavelength of 800nm is 82.9%;
(4) after the surface of the wetted polytetrafluoroethylene film is dried or self-volatilized, the contact angle of water after drying is 146 degrees, and the light transmittance at the wavelength of 800nm is 64 percent.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A preparation method of a wettability and light transmittance dual reversible conversion film is characterized by comprising the following steps:
s1, ablating a micro-nano structure on the surface of the polytetrafluoroethylene film in a laser processing mode, wherein the size of the micro-nano structure is 100nm-20 mu m;
and S2, providing a hydrophilic organic solvent, and wetting or drying the surface of the polytetrafluoroethylene film with the micro-nano structure processed in the step S1 by using the hydrophilic organic solvent so as to perform reversible conversion on the wettability and the light transmittance of the surface of the polytetrafluoroethylene film with the micro-nano structure at the same time.
2. The method for preparing a wettability and light transmittance dual reversible conversion film according to claim 1, wherein said laser processing in step S1 includes: and processing a porous pattern on the surface of the polytetrafluoroethylene film by using a laser beam.
3. The method of manufacturing a dual wettability and light transmittance reversible thin film according to claim 2, wherein a scanning path of the porous pattern includes a plurality of equally spaced transverse lines.
4. The method of manufacturing a dual wettability and light transmittance reversible thin film according to claim 3, wherein a distance between two adjacent transverse lines is 5 to 20 μm.
5. The preparation method of the wettability and light transmittance dual reversible conversion film according to claim 1, wherein the size of the micro-nano structure is 100nm to 18 μm.
6. The method as claimed in claim 1, wherein the laser processing has a pulse frequency of 50-800kHz, a processing speed of 100-2000mm/s, an output power of 3-8W, a pulse width of 200fs-20ns, a wavelength of 1030nm, a pulse duration of 350fs, and a repetition frequency of 50-200 kHz.
7. The method for preparing a dual wettability and transmittance reversible thin film according to claim 1, wherein the hydrophilic organic solvent is one or more selected from ethanol, acetone, methanol or isopropanol.
8. A wettability and light transmittance dual reversible conversion film is characterized by comprising the polytetrafluoroethylene film with the micro-nano structure prepared by the preparation method of any one of claims 1-7 and the hydrophilic organic solvent.
9. A method for dual reversible transition of wettability and light transmittance of a thin film, comprising the steps of:
providing a polytetrafluoroethylene film, and processing the polytetrafluoroethylene film by using the preparation method according to any one of claims 1 to 7 to obtain the polytetrafluoroethylene film with the micro-nano structure;
and wetting or drying the polytetrafluoroethylene film surface with the micro-nano structure by using the hydrophilic organic solvent so as to simultaneously perform reversible conversion on the wettability and the light transmittance of the polytetrafluoroethylene film surface with the micro-nano structure.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288561A (en) * | 2000-04-05 | 2001-10-19 | Japan Science & Technology Corp | Method for producing polytetrafluoroethylene thin film by light sensitizing pulse laser abrasion deposition method |
| CN1569933A (en) * | 2003-07-16 | 2005-01-26 | 中国科学院化学研究所 | Soakage reversibly variable temperature-responsive copolymer film preparation method |
| US20070231542A1 (en) * | 2006-04-03 | 2007-10-04 | General Electric Company | Articles having low wettability and high light transmission |
| CN109954965A (en) * | 2019-03-28 | 2019-07-02 | 大族激光科技产业集团股份有限公司 | The method for carrying out Treatment of Metal Surface by nanosecond laser |
-
2021
- 2021-11-15 CN CN202111344907.6A patent/CN113831574B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288561A (en) * | 2000-04-05 | 2001-10-19 | Japan Science & Technology Corp | Method for producing polytetrafluoroethylene thin film by light sensitizing pulse laser abrasion deposition method |
| CN1569933A (en) * | 2003-07-16 | 2005-01-26 | 中国科学院化学研究所 | Soakage reversibly variable temperature-responsive copolymer film preparation method |
| US20070231542A1 (en) * | 2006-04-03 | 2007-10-04 | General Electric Company | Articles having low wettability and high light transmission |
| CN109954965A (en) * | 2019-03-28 | 2019-07-02 | 大族激光科技产业集团股份有限公司 | The method for carrying out Treatment of Metal Surface by nanosecond laser |
Non-Patent Citations (2)
| Title |
|---|
| HERNANDO S SALAPARE: "Low-energy hydrogen ion shower (LEHIS) treatment of polytetrafluoroethylene(PTFE) materials", 《APPLIED SIRFACE SCIENCE》 * |
| 吴志鹏: "飞秒激光微纳制造水下气体浸润性表面", 《激光与光电子学进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535813A (en) * | 2022-02-11 | 2022-05-27 | 东南大学 | Reversible regulation and control method for surface wettability |
| CN114535813B (en) * | 2022-02-11 | 2024-03-01 | 东南大学 | Reversible regulation and control method for surface wettability |
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| CN113831574B (en) | 2022-06-07 |
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