CN114874592A - Flexible porous super-hydrophobic film and preparation method thereof - Google Patents
Flexible porous super-hydrophobic film and preparation method thereof Download PDFInfo
- Publication number
- CN114874592A CN114874592A CN202210332064.6A CN202210332064A CN114874592A CN 114874592 A CN114874592 A CN 114874592A CN 202210332064 A CN202210332064 A CN 202210332064A CN 114874592 A CN114874592 A CN 114874592A
- Authority
- CN
- China
- Prior art keywords
- super
- hydrophobic film
- flexible
- hydrophobic
- flexible porous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 104
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000010008 shearing Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 18
- 238000000967 suction filtration Methods 0.000 claims abstract description 18
- 239000000725 suspension Substances 0.000 claims abstract description 16
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 14
- 229920000728 polyester Polymers 0.000 claims abstract description 9
- 239000002798 polar solvent Substances 0.000 claims abstract description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 14
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 abstract description 26
- 238000000576 coating method Methods 0.000 abstract description 26
- 239000000463 material Substances 0.000 abstract description 18
- 239000002253 acid Substances 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 230000006750 UV protection Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 63
- 229920002725 thermoplastic elastomer Polymers 0.000 description 21
- 239000002904 solvent Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a flexible porous super-hydrophobic film and a preparation method thereof, which are used for solving the technical problem that the existing flexible super-hydrophobic surface is easy to peel off and comprise the following steps: adding high molecular polyester into a polar solvent, stirring and dissolving to prepare a suspension; emulsifying and shearing the suspension to obtain gel liquid; and carrying out suction filtration on the gel liquid by using filter paper to form a uniform gel layer on the filter paper, and drying the gel layer to form the flexible super-hydrophobic film. The flexible super-hydrophobic film material prepared by the invention realizes the coexistence of the surface microporous structure and the low surface energy, and the integrated structure effectively avoids the peeling or falling off of the super-hydrophobic coating in the strain process. The method has the advantages of simple preparation process and strong applicability, and the flexible super-hydrophobic film material has the durable performances of acid and alkali resistance, ultraviolet resistance and mechanical force resistance.
Description
Technical Field
The invention belongs to the technical field of super-hydrophobic materials, and particularly relates to a flexible porous super-hydrophobic film and a preparation method thereof.
Background
The super-hydrophobic coating is a phenomenon which is common in the nature, such as water drops rolling off rapidly on the surfaces of plants such as lotus leaves and rice leaves. The super-hydrophobic phenomenon refers to a state that a static contact angle of a water drop on the surface of a solid is larger than 150 degrees, and a rolling angle is smaller than 10 degrees, and the super-hydrophobic material has important characteristics of self-cleaning, corrosion prevention, antifouling and antifogging, ice and dust resistance and the like, has practical application value in antifouling and anticorrosion in industries such as buildings, automobiles, pipeline transportation, metals and the like, and has wide application prospect in a plurality of fields in production and life (CN105440747A Chinese patent). The super-hydrophobic coating generally refers to a microstructure with roughness and low surface energy, and the general coating has either surface roughness or only low surface energy and is combined with subsequent process treatment to realize the super-hydrophobic surface (DOI: 10.1002/smll.201904248). Particularly for the flexible super-hydrophobic film material, under the action of stress, the interface joint of the coating of the micro-nano rough structure and the substrate is easy to generate stress concentration to cause the peeling and falling of the surface micro rough structure (DOI: 10.1039/C2TA01073A, 10.1021/acsami.7b08920). The flexible material with low surface energy is combined with the porous structure to meet the requirement of constructing the super-hydrophobic coating, and the structure of the super-hydrophobic coating integrated with the flexible substrate can effectively avoid the peeling of the super-hydrophobic coating caused by the mismatch of rigidity between interfaces; in addition, the method of solvent/non-solvent phase separation can be applied to constructing pore structures in various flexible materials with low surface energy, and is easy to operate. Therefore, a porous microstructure is constructed on the surface of the flexible thin film material by utilizing the flexibility, the film forming property and the hydrophobicity of the material and combining a solvent/non-solvent method, and the foundation of wide application of the flexible super-hydrophobic thin film material is laid.
The super-hydrophobic coating in daily use loses the super-hydrophobic property due to damage under the test of external stress, ultraviolet rays, acid-base salt corrosion and other conditions, so that the stable and durable flexible super-hydrophobic surface becomes a difficult problem to be overcome in the industry and academia. The method is an effective method for realizing the long-term stability of the super-hydrophobic property by researching and developing a durable flexible super-hydrophobic coating material, and the integrated flexible super-hydrophobic film material can realize the stability of the super-hydrophobic surface after being bent for many times and twisted, so that the problem of infirm adhesion of the super-hydrophobic surface in industrial application is solved.
Disclosure of Invention
Aiming at the technical problem of the defect that the existing flexible super-hydrophobic surface is easy to peel off, the invention provides the flexible porous super-hydrophobic film and the preparation method thereof, the prepared flexible porous film material has the surface microporous structure and the low surface energy which are cooperated and coexisted, the construction of the flexible super-hydrophobic coating is realized, and the integrated structure effectively avoids the peeling off of the super-hydrophobic surface in the deformation process. The method has the advantages of simple preparation process and strong applicability, and the flexible super-hydrophobic film material has the durable performances of acid and alkali resistance, ultraviolet resistance and mechanical force resistance.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a preparation method of a flexible porous super-hydrophobic film comprises the following steps:
(1) adding a high molecular polymer into a polar solvent, and stirring and dissolving to prepare a suspension;
(2) emulsifying and shearing the suspension prepared in the step (1) to obtain gel liquid;
(3) and (3) carrying out suction filtration on the gel liquid prepared in the step (2) by using filter paper, forming a uniform gel layer on the filter paper, and drying the gel layer to form the flexible super-hydrophobic film.
Preferably, in the step (1), the polymer is polyester, and the polyester is thermoplastic elastomer of different types.
Preferably, the polar solvent in step (1) is tetrahydrofuran.
Preferably, the stirring temperature in the step (1) is 20-60 ℃, and the stirring time is 2-4 h.
Preferably, the speed of emulsification and shearing in the step (2) is 500-8000 rpm, and the shearing time is 5-10 min.
Preferably, the concentration of the gel liquid in the step (2) is 0.5-4 mg/mL, and the viscosity is 30000-50000 mpa & s.
Preferably, the suction filtration pressure in the step (3) is 0.02-0.1 MPa, and the suction filtration time is 1-3 min.
Preferably, the thickness of the flexible super-hydrophobic film in the step (3) is 20-500 μm.
Preferably, the drying temperature in the step (3) is 20-100 ℃, and the relative humidity is 20-90%.
Preferably, the drying temperature in the step (3) is 20-50 ℃, and the relative humidity is 50-90%.
A flexible porous super-hydrophobic film is prepared by the method.
The invention has the beneficial effects that:
(1) the preparation method is simple and easy to operate; the existing technology for constructing the coating with the micro-nano coarse structure mostly needs complicated preparation processes, the microstructure regulation and control technology is harsh, and expensive materials and equipment are mostly needed for reducing the surface energy of the materials; compared with the prior art, the invention adopts a solvent/non-solvent phase separation method to construct a micro rough structure on the low surface energy material to realize the super-hydrophobic surface, is simple and easy to obtain, has low price and low requirement on the environment, does not need expensive equipment and effectively saves the cost.
(2) The integrated structure of the super-hydrophobic coating and the flexible substrate effectively avoids the peeling phenomenon of the super-hydrophobic coating under the stress action caused by the unmatched rigidity between the super-hydrophobic coating and the flexible substrate, and provides a reliable method for preparing the flexible super-hydrophobic coating.
(3) The durability of the super-hydrophobic coating is improved, and the flexible porous super-hydrophobic film is suitable for outdoor environment, and has the characteristics of effective self-cleaning, bending resistance, pressure resistance, corrosion resistance and sun and rain resistance. On the other hand, the flexibility of the film is enhanced by the crosslinking of the flexible polymer chain segment in the film, and the hole structure constructed by the surface elastomer can effectively realize the bouncing effect of large liquid drops on the surface of the film, thereby establishing wider industrial application of the super-hydrophobic film material.
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 drawings without creative efforts.
FIG. 1 is a graph of the rolling effect of a water drop on a flexible superhydrophobic film;
FIG. 2 is a scanning electron micrograph of the flexible superhydrophobic film prepared in example 1;
FIG. 3 is a partial magnified view of the flexible superhydrophobic film prepared in example 1 under a scanning electron microscope;
FIG. 4 is a cross-sectional electron microscope image of a porous coating in the flexible superhydrophobic film prepared in example 1;
FIG. 5 is a contact angle of the flexible superhydrophobic film prepared in example 2 after being soaked in acid, alkali and salt solution for 72 h;
fig. 6 is a weather resistance test of the flexible superhydrophobic film prepared in example 3.
Detailed Description
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 represent only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
A flexible porous super-hydrophobic film and a preparation method thereof comprise the following steps: adding 200mg of polyester (DuPont 5526) into 200mL of tetrahydrofuran, and magnetically stirring for 2h at the stirring temperature of 25 ℃ to obtain a thermoplastic elastomer suspension; emulsifying and shearing the thermoplastic elastomer suspension, wherein the speed of an emulsifying shearing machine is 5000rpm, the shearing time is 8min, a milky dispersion liquid is obtained, and magnetic stirring is continuously carried out to form a thermoplastic elastomer gel liquid in a stable gluing state; and (2) injecting 20mL of thermoplastic elastomer gel liquid into a 60mL Buchner funnel paved with qualitative filter paper, performing suction filtration under the pressure of 0.098Mpa for 1min to form a uniform gel layer, drying the gel layer until the solvent is completely volatilized, wherein the drying temperature is 25 ℃ and the RH is 50% to prepare the flexible super-hydrophobic film, forming a porous super-hydrophobic coating structure on the surface of the flexible super-hydrophobic film facing the air (as shown in figures 2 and 3), and avoiding the problem of peeling of the super-hydrophobic surface due to the integrated structure of the super-hydrophobic surface and the flexible substrate, wherein the thickness of the flexible super-hydrophobic film is 60 mu m (as shown in figure 4).
And (3) determining the super-hydrophobic flexibility of the flexible super-hydrophobic film:
the water contact angles before and after the film surface was subjected to the bending treatment were measured and recorded by an optical contact angle measuring instrument (OCA 20). As shown in fig. 1, the initial contact angle of the film reaches 155.6 degrees, the rolling angle is less than 5 degrees, and water drops can roll back and forth on the surface of the film; after bending, the contact angle of a water drop on the surface of the film is 154.8 degrees, the rolling angle is less than 5 degrees, and the film still shows good super-hydrophobic performance. Test results show that the film still shows good super-hydrophobic performance after being bent and twisted for many times.
Example 2
A flexible porous super-hydrophobic film and a preparation method thereof comprise the following steps: adding 300mg of polyester (DuPont 5526) into 200mL of tetrahydrofuran, and magnetically stirring for 3h at room temperature, wherein the stirring temperature is 30 ℃ to obtain a thermoplastic elastomer suspension; emulsifying and shearing the thermoplastic elastomer suspension, wherein the speed of an emulsifying shearing machine is 8000rpm, and the shearing time is 5min to obtain milky dispersion, and continuing to magnetically stir for 4h to form a thermoplastic elastomer gel liquid in a stable gluing state; and (2) injecting 30mL of thermoplastic elastomer gel liquid into a 60mL Buchner funnel paved with qualitative filter paper, performing suction filtration for 2min under the pressure of 0.1Mpa to form a uniform gel layer, drying the gel layer until the solvent is completely volatilized, wherein the drying temperature is 30 ℃, and the RH is 70% to prepare the flexible super-hydrophobic film, wherein the surface of the flexible super-hydrophobic film facing the air forms a porous super-hydrophobic coating structure, and the thickness of the flexible super-hydrophobic film is 70 microns.
And (3) measuring the corrosion resistance of the flexible super-hydrophobic film:
respectively preparing 1mol/L acid, alkali and salt solutions by adopting HCl, NaOH and NaCl, respectively dipping the flexible super-hydrophobic film into the solutions, taking out the flexible super-hydrophobic film after 72 hours of separation, washing the flexible super-hydrophobic film by water, completely drying the flexible super-hydrophobic film, and measuring the water contact angle of the flexible super-hydrophobic film. FIG. 5 shows that after the film is soaked in the solution for 72h, the contact angle of the surface of the film is tested, and the contact angle is reduced, but the good super-hydrophobic performance is still performed. The contact angles of the coating after being soaked in acid, alkali and salt solution for 72h are respectively 151.5 degrees, 152.2 degrees and 150.6 degrees, and the test result shows that the coating has good corrosion resistance.
Example 3
A flexible porous super-hydrophobic film and a preparation method thereof comprise the following steps: adding 200mg of polyester (DuPont 5526) into 200mL of tetrahydrofuran, and magnetically stirring at 25 ℃ for 2.5h at room temperature to obtain a thermoplastic elastomer suspension; emulsifying and shearing the thermoplastic elastomer suspension, wherein the shearing time of an emulsifying shearing machine (ESR-500) is 10min at the speed of 3000rpm to obtain milky dispersion, and continuously stirring for 3h to form thermoplastic elastomer gel liquid in a stable gluing state; and (2) pouring 20mL of thermoplastic elastomer gel liquid into a 60mL Buchner funnel paved with qualitative filter paper for suction filtration, wherein the suction filtration pressure is 0.02Mpa, the suction filtration time is 2min, forming a uniform gel layer, drying the gel layer until the solvent is completely volatilized, the drying temperature is 25 ℃, and the RH is 50%, so that the flexible super-hydrophobic film is prepared, a porous super-hydrophobic coating structure is formed on one surface of the flexible super-hydrophobic film facing the air, and the thickness of the flexible super-hydrophobic film is 80 microns.
Testing the weather resistance of the flexible super-hydrophobic film:
a heat-resistant solarization climate tester (YG611L) is adopted to carry out light irradiation on the flexible film for 5min, rain is carried out for 1min, and the water contact angle of the flexible super-hydrophobic film is tested, as shown in figure 6, the test result shows that the contact angle of the surface of the film can still be kept above 150 degrees after the film is irradiated by sunlight, and the coating has good weather resistance.
Example 4
A flexible porous super-hydrophobic film and a preparation method thereof comprise the following steps: adding 100mg of polyester (DuPont 5526) into 200mL of tetrahydrofuran, and magnetically stirring for 2h at room temperature, wherein the stirring temperature is 20 ℃ to obtain a thermoplastic elastomer suspension; emulsifying and shearing the thermoplastic elastomer suspension, wherein the shearing time is 10min at the speed of an emulsifying shearing machine (ESR-500) of 500rpm to obtain milky dispersion, and continuously stirring for 3h to form thermoplastic elastomer gel liquid in a stable gluing state; and (2) injecting 20mL of thermoplastic elastomer gel liquid into a 60mL Buchner funnel paved with qualitative filter paper for suction filtration, wherein the suction filtration pressure is 0.1Mpa, the suction filtration time is 1min, forming a uniform gel layer, drying the gel layer until the solvent is completely volatilized, the drying temperature is 20 ℃, and the RH is 90%, so that the flexible super-hydrophobic film is prepared, and the porous super-hydrophobic coating structure is formed on the surface of the flexible super-hydrophobic film facing the air, and the thickness of the flexible super-hydrophobic film is 20 micrometers.
Example 5
A flexible porous super-hydrophobic film and a preparation method thereof comprise the following steps: adding 400mg of polyester (DuPont 5526) into 100mL of tetrahydrofuran, and magnetically stirring for 4 hours at room temperature, wherein the stirring temperature is 60 ℃ to prepare a thermoplastic elastomer suspension; emulsifying and shearing the thermoplastic elastomer suspension, wherein the shearing time of an emulsifying shearing machine (ESR-500) is 10min at the speed of 8000rpm to obtain milky dispersion, and continuously stirring for 3h to form thermoplastic elastomer gel liquid in a stable gluing state; and (2) pouring 40mL of thermoplastic elastomer gel liquid into a 60mL Buchner funnel paved with qualitative filter paper for suction filtration, wherein the suction filtration pressure is 0.02Mpa, the suction filtration time is 3min, forming a uniform gel layer, drying the gel layer until the solvent is completely volatilized, the drying temperature is 100 ℃, and the RH is 20%, so that the flexible super-hydrophobic film is prepared, a porous super-hydrophobic coating structure is formed on one surface of the flexible super-hydrophobic film facing the air, and the thickness of the flexible super-hydrophobic film is 500 micrometers.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A preparation method of a flexible porous super-hydrophobic film is characterized by comprising the following steps:
(1) adding a high molecular polymer into a polar solvent, and stirring and dissolving to prepare a suspension;
(2) emulsifying and shearing the suspension prepared in the step (1) to obtain gel liquid;
(3) and (3) carrying out suction filtration on the gel liquid prepared in the step (2) by using filter paper, forming a uniform gel layer on the filter paper, and drying the gel layer to form the flexible porous super-hydrophobic film.
2. The method for preparing the flexible porous super-hydrophobic film according to claim 1, wherein the method comprises the following steps: the high molecular polymer in the step (1) is polyester; the polar solvent is tetrahydrofuran.
3. The method for preparing the flexible porous super-hydrophobic film according to claim 2, wherein the method comprises the following steps: in the step (1), the stirring temperature is 20-60 ℃, and the stirring time is 2-4 h.
4. The method for preparing the flexible porous super-hydrophobic film according to claim 1, wherein the method comprises the following steps: the emulsifying and shearing speed in the step (2) is 500-8000 rpm, and the shearing time is 5-10 min.
5. The method for preparing the flexible porous super-hydrophobic film according to claim 4, wherein the method comprises the following steps: the concentration of the gel liquid in the step (2) is 0.5-4 mg/mL, and the viscosity is 30000-50000 mpa & s.
6. The method for preparing the flexible porous super-hydrophobic film according to claim 1, wherein the method comprises the following steps: and (4) in the step (3), the suction filtration pressure is 0.02-0.1 MPa, and the suction filtration time is 1-3 min.
7. The method for preparing the flexible porous super-hydrophobic film according to claim 6, wherein the method comprises the following steps: the thickness of the flexible super-hydrophobic film in the step (3) is 20-500 mu m.
8. The method for preparing a flexible porous superhydrophobic film according to any one of claims 1-7, wherein: in the step (3), the drying temperature is 20-100 ℃, and the relative humidity is 20-90%.
9. The method for preparing the flexible porous super-hydrophobic film according to claim 8, wherein: in the step (3), the drying temperature is 20-50 ℃, and the relative humidity is 50-90%.
10. A flexible porous super-hydrophobic film, characterized in that: the flexible porous superhydrophobic film made from claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332064.6A CN114874592B (en) | 2022-03-30 | 2022-03-30 | Flexible porous super-hydrophobic film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332064.6A CN114874592B (en) | 2022-03-30 | 2022-03-30 | Flexible porous super-hydrophobic film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114874592A true CN114874592A (en) | 2022-08-09 |
| CN114874592B CN114874592B (en) | 2023-11-03 |
Family
ID=82670482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210332064.6A Active CN114874592B (en) | 2022-03-30 | 2022-03-30 | Flexible porous super-hydrophobic film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114874592B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3428478A (en) * | 1964-06-12 | 1969-02-18 | American Cyanamid Co | Hydrophobic organic film coated with a polyol-polymethylolamidogen condensate and process for preparation of said film |
| JP2001064433A (en) * | 1999-08-31 | 2001-03-13 | Dainippon Ink & Chem Inc | Production of polyester porous film |
| CN102115543A (en) * | 2010-12-28 | 2011-07-06 | 中国纺织科学研究院 | Method for preparing high-hydrophobic polyester |
| CN102408578A (en) * | 2011-09-22 | 2012-04-11 | 福建师范大学 | Preparation method for super hydrophobic biodegradable compound film and product thereof |
| CN105085953A (en) * | 2015-08-25 | 2015-11-25 | 郑州大学 | Method for preparing polylactic acid super-hydrophobic membranes by aid of phase separation process |
| CN107090087A (en) * | 2017-05-12 | 2017-08-25 | 郑州大学 | The method that microphase-separated method prepares the controllable PLA based superhydrophobic thin films of adhesion is aided in using solventnonsolvent |
| CN110026093A (en) * | 2019-04-27 | 2019-07-19 | 浙江理工大学 | A kind of PET-SiO2The preparation method of super-hydrophobic film |
| CN110483924A (en) * | 2019-08-21 | 2019-11-22 | 陕西科技大学 | A kind of super-hydrophobic automatic cleaning radiation cooling film and preparation method thereof |
| CN111320773A (en) * | 2020-03-31 | 2020-06-23 | 陕西科技大学 | Preparation method of self-supporting flexible conductive super-hydrophobic film |
| CN113980308A (en) * | 2021-11-02 | 2022-01-28 | 青岛科技大学 | Method for preparing high-crystallinity polylactic acid film |
-
2022
- 2022-03-30 CN CN202210332064.6A patent/CN114874592B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3428478A (en) * | 1964-06-12 | 1969-02-18 | American Cyanamid Co | Hydrophobic organic film coated with a polyol-polymethylolamidogen condensate and process for preparation of said film |
| JP2001064433A (en) * | 1999-08-31 | 2001-03-13 | Dainippon Ink & Chem Inc | Production of polyester porous film |
| CN102115543A (en) * | 2010-12-28 | 2011-07-06 | 中国纺织科学研究院 | Method for preparing high-hydrophobic polyester |
| CN102408578A (en) * | 2011-09-22 | 2012-04-11 | 福建师范大学 | Preparation method for super hydrophobic biodegradable compound film and product thereof |
| CN105085953A (en) * | 2015-08-25 | 2015-11-25 | 郑州大学 | Method for preparing polylactic acid super-hydrophobic membranes by aid of phase separation process |
| CN107090087A (en) * | 2017-05-12 | 2017-08-25 | 郑州大学 | The method that microphase-separated method prepares the controllable PLA based superhydrophobic thin films of adhesion is aided in using solventnonsolvent |
| CN110026093A (en) * | 2019-04-27 | 2019-07-19 | 浙江理工大学 | A kind of PET-SiO2The preparation method of super-hydrophobic film |
| CN110483924A (en) * | 2019-08-21 | 2019-11-22 | 陕西科技大学 | A kind of super-hydrophobic automatic cleaning radiation cooling film and preparation method thereof |
| CN111320773A (en) * | 2020-03-31 | 2020-06-23 | 陕西科技大学 | Preparation method of self-supporting flexible conductive super-hydrophobic film |
| CN113980308A (en) * | 2021-11-02 | 2022-01-28 | 青岛科技大学 | Method for preparing high-crystallinity polylactic acid film |
Non-Patent Citations (4)
| Title |
|---|
| YAFANG CHANG等: "Nonsolvent-assisted fabrication of multi-scaled polylactide as superhydrophobic surfaces", 《SOFT MATTER》, pages 2766 - 2772 * |
| YA-RU DING等: "Fabrication of superhydrophobic conductive film at air water interface for flexible and wearable sensors", 《CHEMICAL ENGINEERING JOURNAL》, pages 126489 * |
| 吴单;王婷兰;王婧琳;姚远;唐颂超;: "一种基于立构复合及自组装方法构筑的耐受性疏水表面", 应用化学, no. 06, pages 19 - 27 * |
| 孔繁荣;陈玉环;潘莉莎;徐鼐;庞素娟;林强;: "可降解聚氨酯疏水薄膜的制备及性能研究", 中国塑料, no. 06, pages 75 - 79 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114874592B (en) | 2023-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cohen et al. | Superhydrophobic coatings and their durability | |
| Gao et al. | Mechanical stability, corrosion resistance of superhydrophobic steel and repairable durability of its slippery surface | |
| CN106893454B (en) | preparation method of sprayable and durable super-amphiphobic coating | |
| Chen et al. | Creating robust superamphiphobic coatings for both hard and soft materials | |
| Sharma et al. | A review on challenges, recent progress and applications of silica nanoparticles based superhydrophobic coatings | |
| CN102808357A (en) | Super-hydrophobic paper and production method thereof | |
| Zhou et al. | Fabrication of superhydrophilic and underwater superoleophobic membranes for fast and effective oil/water separation with excellent durability | |
| Sahoo et al. | PDMS/camphor soot composite coating: towards a self-healing and a self-cleaning superhydrophobic surface | |
| CN108641421B (en) | Preparation method of graphene-based self-repairing super-hydrophobic coating | |
| CN107497301A (en) | A kind of dual bionical method for constructing membrane distillation super-hydrophobic film | |
| Ye et al. | Achieving hierarchical structure with superhydrophobicity and enhanced anti-corrosion via electrochemical etching and chemical vapor deposition | |
| CN104148266B (en) | Automatically cleaning polymer film or coating and preparation method thereof | |
| WO2018226652A1 (en) | Superhydrophobic coatings | |
| CN110627376A (en) | Nano SiO2Super-hydrophobic coating, preparation process and application | |
| Zhang et al. | A mechanically and chemically stable superhydrophobic coating for preventing marine atmospheric corrosion | |
| CN115772348B (en) | Full-bio-based super-hydrophilic/underwater super-oleophobic coating and preparation method thereof | |
| Ge et al. | Formation and properties of superhydrophobic Al coatings on steel | |
| CN113773437A (en) | Fluorine-containing methacrylate polymer, self-cleaning coating, preparation method and application | |
| CN114874592A (en) | Flexible porous super-hydrophobic film and preparation method thereof | |
| AU2020102847A4 (en) | Preparation Method of Drag-reducing Copper Surface | |
| CN111114040B (en) | Solvent steam driven type super-hydrophobic film and preparation method thereof | |
| Li et al. | Preparation and properties of a superhydrophobic surface on the printed circuit board (PCB) | |
| Li et al. | Spontaneous wrinkling of layer-by-layer assembled polyelectrolyte films for humidity-responsive superhydrophobicity | |
| Wu et al. | Green synthesis of mechanical robust superhydrophobic CNT@ PU coatings with high flexibility for extensive applications | |
| Sun et al. | A mechanically robust superhydrophobic corrosion resistant coating with self-healing capability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |