CN112569637B - Coating capable of switching surface wettability for oil-water separation and preparation method thereof - Google Patents
Coating capable of switching surface wettability for oil-water separation and preparation method thereof Download PDFInfo
- Publication number
- CN112569637B CN112569637B CN202011382755.4A CN202011382755A CN112569637B CN 112569637 B CN112569637 B CN 112569637B CN 202011382755 A CN202011382755 A CN 202011382755A CN 112569637 B CN112569637 B CN 112569637B
- Authority
- CN
- China
- Prior art keywords
- coating
- phase
- oil
- energy chemical
- water separation
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Abstract
The invention relates to the technical field of oil-water separation, in particular to a coating capable of switching surface wettability for oil-water separation and a preparation method thereof. The coating with switchable surface wettability properties comprises a low surface energy chemical phase, a multi-level topological physical phase and an adhesive; the low surface energy chemical phase includes a polar group fluoropolymer and a first solvent; the multi-level topological physical phase comprises inorganic microparticles, inorganic nanoparticles, and a second solvent; the volume ratio of the low surface energy chemical phase to the multilevel topological physical phase is 10: 3 to 10. The preparation method of the coating comprises the steps of mixing, sealing, standing and discharging bubbles of the low-surface-energy chemical phase, the multi-level topological physical phase and the adhesive, uniformly coating the mixture on a metal screen, and naturally drying the metal screen to obtain the coating. The coating prepared by the method has a super-hydrophilic-super-oleophobic surface, has higher oil-water separation efficiency, can be freely switched from the super-hydrophilic-super-oleophobic surface to the super-hydrophobic-super-oleophobic surface after meeting an acidic environment, and has acid substance corrosion resistance.
Description
Technical Field
The invention relates to the technical field of oil-water separation, in particular to a coating capable of switching surface wettability for oil-water separation and a preparation method thereof.
Background
With the rapid development of world industrialization, a large amount of oily wastewater is discharged from industries such as petrochemical industry, food, textile, metal processing and the like, and oil spilling events which frequently occur internationally also pollute coastal lands and marine environments and seriously harm natural environments and human survival. Conventional oil-water separation techniques include gravity separation, centrifugal separation, ultrasonic separation, air-float process, electric field process, coagulation process, chemisorption process, biodegradation process, membrane separation technique, and the like. The membrane separation technology has the advantages of low energy consumption, easy operation, good separation effect and the like, and is widely concerned by researchers.
Hui Liu (Chemical Engineering Journal,2017, DOI:10.1016/j.cej.2017.07.114) sprays polysiloxane/polymethyl methacrylate on a metal screen to form a wear-resistant super-hydrophobic-super-oleophilic surface, which has excellent separation effect on oil-water mixture or emulsion. However, the super-hydrophobic-super-oleophilic surface prepared by the method is easily polluted by oily substances, and when oil and water are separated, the lower-layer high-density water can prevent the upper-layer low-density oil from contacting the separation membrane, so that the oil and water separation efficiency is not ideal. In addition, acidic substances such as inorganic acids and organic acids tend to corrode metal screens, and the effect of oil-water separation is seriously reduced. Compared with a super-hydrophobic-super-oleophylic surface, the super-hydrophilic-super-oleophobic surface with the metal screen as the substrate has higher oil-water separation efficiency.
Therefore, the super-hydrophilic-super-oleophobic coating capable of switching the surface wettability facing the oil-water separation is of great significance.
Disclosure of Invention
In view of the above, there is a need to provide a coating capable of switching surface wettability for oil-water separation, which can be freely switched from superhydrophilic-superoleophobic to superhydrophobic-superoleophobic, thereby inhibiting the permeation corrosion of acidic substances and improving the oil-water separation efficiency, and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coating facing oil-water separation switchable surface wettability properties comprises a low surface energy chemical phase, a multilevel topological physical phase and an adhesive; the low surface energy chemical phase includes a polar group fluoropolymer and a first solvent; the multi-level topological physical phase comprises inorganic microparticles, inorganic nanoparticles, and a second solvent; the volume ratio of the low surface energy chemical phase to the multilevel topological physical phase is 10: 3 to 10.
Furthermore, in the coating facing the oil-water separation switchable surface wettability, the adhesive is one of a polyvinyl alcohol aqueous solution, a polyvinyl alcohol pyrrolidone aqueous solution, a polyethylene glycol aqueous solution and sodium carboxymethylcellulose; the volume ratio of the adhesive to the total volume of the low surface energy chemical phase and the multi-level topological physical phase is 3% -15%: 1.
preferably, in the coating facing the oil-water separation switchable surface wettability, the solid content of the polar group fluoropolymer in the low surface energy chemical phase is 2-10%.
Preferably, in the coating facing the oil-water separation switchable surface wettability, the solid content of the inorganic micro-particles and inorganic nano-particles in the multi-level topological physical phase is 1-7%.
Preferably, in the coating facing the oil-water separation switchable surface wettability, the solid content of the adhesive is 0.5-4.5%.
Further, in the above coating layer for switching the wettability of the surface facing oil-water separation, the polar group fluoropolymer may be one or two of Zonyl 9361, Zonyl 7910, Zonyl FSA, Zonyl FSE, CamptoneFS-64, Camptone FS-61, FPOSS-COOH and FPOSS-NH.
Further, in the coating facing the wettability of the oil-water separation switchable surface, the first solvent is one of water, ethanol, ethylene glycol and isopropanol.
Further, in the coating facing the oil-water separation switchable surface wettability, the inorganic microparticles are one of silicon dioxide microparticles, titanium dioxide microparticles, zirconium dioxide microparticles and aluminum oxide microparticles; the inorganic nano-particles are one of silicon dioxide nano-particles, titanium dioxide nano-particles, zinc oxide nano-particles and aluminum oxide nano-particles.
Preferably, in the coating facing the wettability of the oil-water separation switchable surface, the size of the inorganic micron particles is 1.5-9 μm.
Preferably, in the coating facing the oil-water separation switchable surface wettability, the size of the inorganic nanoparticles is 10-90 nm.
Further, in the coating layer facing the oil-water separation switchable surface wettability, the second solvent is one of ethanol, isopropanol, dipropylene glycol methyl ether and dipropylene glycol butyl ether.
Further, in the coating facing the wettability of the oil-water separation switchable surface, the mass ratio of the inorganic microparticles to the inorganic nanoparticles is 10: 7 to 20.
A preparation method of a coating facing oil-water separation switchable surface wettability performance comprises the following steps:
(1) uniformly stirring and mixing the polar group fluorine polymer and a first solvent to form a low surface energy chemical phase;
(2) ultrasonically mixing inorganic microparticles, inorganic nanoparticles and a second solvent to form a multi-level topological physical phase;
(3) mixing the formed low surface energy chemical phase with the multi-level topological physical phase, adding an adhesive, sealing, standing and discharging bubbles to form slurry;
(4) and (4) uniformly coating the slurry prepared in the step (3) on a metal screen, and naturally drying to obtain the composite material.
Further, in the preparation method of the coating facing the oil-water separation switchable surface wettability, the sealing and standing time is 1-5 hours.
Further, in the preparation method of the coating facing the oil-water separation switchable surface wettability, the coating mode is one of spray coating, dip coating, spin coating and blade coating.
Further, in the preparation method of the coating facing the oil-water separation switchable surface wettability, the metal screen is one of a stainless steel screen, a titanium screen, a copper screen, an aluminum screen and an iron screen.
Further, in the preparation method of the coating facing the oil-water separation and capable of switching the surface wettability, the mesh size of the metal screen is 120-800 meshes.
The invention has the beneficial effects that:
(1) the coating with switchable surface wettability provided by the invention comprises a low-surface-energy chemical phase based on a polar group fluoropolymer and a multi-level topological physical phase based on inorganic micro-particles/inorganic nano-particles, and the prepared coating has a super hydrophilic-super oleophobic surface and higher oil-water separation efficiency.
(2) The coating with switchable surface wettability can sense environmental acidity, is freely switched from the super-hydrophilic-super-oleophobic surface to the super-hydrophobic-super-oleophobic surface after meeting an acidic environment, inhibits the penetration of acidic substances, and has acid substance corrosion resistance.
(3) The coating with switchable surface wettability provided by the invention has a simple preparation process, can be cured by adopting a natural drying mode, is more convenient and easy to operate compared with processes such as ultraviolet curing, high-temperature curing and the like in the prior art, and utilizes large-area construction.
Drawings
FIG. 1 is an SEM image of a superhydrophilic-superoleophobic surface made according to example 1 of the invention;
FIG. 2 is a diagram showing the contact state of the coating prepared in example 1 with water and oil;
fig. 3 is an elemental analysis spectrum of the screens of example 1 and comparative example 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further clearly and completely described below with reference to the embodiments of the present invention. It should be noted 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
A coating facing switchable surface wettability properties for oil-water separation comprising a low surface energy chemical phase, a multi-level topological physical phase and an adhesion agent; the low surface energy chemical phase includes a polar group fluoropolymer and a first solvent; the multi-level topological physical phase comprises inorganic microparticles, inorganic nanoparticles, and a second solvent; the volume ratio of the low surface energy chemical phase to the multilevel topological physical phase is 10: 4;
wherein, the polar group fluoropolymer is Zonyl 9361, the first solvent is water, and the solid content of the Zonyl 9361 in the low surface energy chemical phase is 3.5%;
wherein the inorganic microparticles are silica microparticles with the particle size of 4 μm, the inorganic nanoparticles are titanium dioxide nanoparticles with the particle size of 20nm, and the mass ratio of the silica microparticles to the titanium dioxide nanoparticles is 10: 13; the second solvent is ethanol; the total solid content of the silicon dioxide microparticles and the titanium dioxide nanoparticles in the multi-level topological physical phase is 3 percent;
wherein the adhesive is polyvinyl alcohol aqueous solution with solid content of 1.3%, and the volume of the adhesive is 5% of the total volume of the low surface energy chemical phase and the multi-level topological physical phase.
The coating facing the oil-water separation switchable surface wettability is prepared by the following method:
(1) mixing Zonyl 9361 with water to form a low surface energy chemical phase;
(2) ultrasonically mixing silicon dioxide micro-particles, titanium dioxide nano-particles and ethanol to form a multi-level topological physical phase;
(3) mixing the formed low surface energy chemical phase with the multi-level topological physical phase, adding a polyvinyl alcohol aqueous solution, sealing and standing for 1h, and discharging bubbles to form slurry;
(4) and (4) uniformly spraying the slurry prepared in the step (3) on a 200-mesh titanium screen, and naturally drying to obtain the titanium-based composite material.
Example 2
A coating facing switchable surface wettability properties for oil-water separation comprising a low surface energy chemical phase, a multi-level topological physical phase and an adhesion agent; the low surface energy chemical phase includes a polar group fluoropolymer and a first solvent; the multi-level topological physical phase comprises inorganic microparticles, inorganic nanoparticles, and a second solvent; the volume ratio of the low surface energy chemical phase to the multilevel topological physical phase is 10: 7;
wherein the polar group fluoropolymer is Capstone FS-64, the first solvent is ethylene glycol, and the solid content of the Capstone FS-64 in the low surface energy chemical phase is 5%;
wherein the inorganic microparticles are silica microparticles of 5 μm, the inorganic nanoparticles are zinc oxide nanoparticles of 30nm, and the mass ratio of the silica microparticles to the zinc oxide nanoparticles is 10: 9; the second solvent is dipropylene glycol butyl ether; the total solid content of the silicon dioxide microparticles and the titanium dioxide nanoparticles in the multi-level topological physical phase is 3%;
wherein the adhesive is polyvinyl alcohol aqueous solution with solid content of 2%, and the volume of the adhesive is 5% of the total volume of the low surface energy chemical phase and the multi-level topological physical phase.
The coating facing the oil-water separation switchable surface wettability is prepared by the following method:
(1) uniformly stirring and mixing Capstone FS-64 and ethylene glycol to form a low-surface-energy chemical phase;
(2) ultrasonically mixing silicon dioxide micron particles, zinc oxide nano particles and dipropylene glycol butyl ether to form a multi-level topological physical phase;
(3) mixing the formed low surface energy chemical phase with the multi-level topological physical phase, adding a polyvinyl alcohol aqueous solution, sealing and standing for 2 hours, and discharging bubbles to form slurry;
(4) and (4) uniformly spraying the slurry prepared in the step (3) on a stainless steel screen with 300 meshes, and naturally drying to obtain the coating.
Example 3
A coating facing oil-water separation switchable surface wettability properties comprises a low surface energy chemical phase, a multilevel topological physical phase and an adhesive; the low surface energy chemical phase comprises a polar group fluoropolymer and a first solvent; the multi-level topological physical phase comprises inorganic microparticles, inorganic nanoparticles, and a second solvent; the volume ratio of the low surface energy chemical phase to the multilevel topological physical phase is 1: 1;
wherein the polar group fluoropolymer is Zonyl FSA, the first solvent is isopropanol, and the solid content of the Zonyl FSA in the low surface energy chemical phase is 10%;
wherein the inorganic micron particles are 9 μm zirconium dioxide micron particles, the inorganic nano particles are 90nm aluminum oxide nano particles, and the mass ratio of the zirconium dioxide micron particles to the aluminum oxide nano particles is 10: 20; the second solvent is isopropanol; the total solid content of the zirconium dioxide micron particles and the aluminum oxide nano particles in the multi-level topological physical phase is 7 percent;
wherein the adhesive is a polyethylene glycol aqueous solution with solid content of 4.5%, and the volume of the adhesive is 10% of the total volume of the two phases of the low surface energy chemical phase and the multilevel topological physical phase.
The coating facing the oil-water separation switchable surface wettability is prepared by the following method:
(1) mixing Zonyl FSA with isopropanol to form a low surface energy chemical phase;
(2) ultrasonically mixing zirconium dioxide micron particles, aluminum oxide nano particles and isopropanol to form a multi-level topological physical phase;
(3) mixing the formed low surface energy chemical phase and the multi-level topological physical phase, adding a polyethylene glycol aqueous solution, sealing and standing for 5 hours, and discharging bubbles to form slurry;
(4) and (4) uniformly spraying the slurry prepared in the step (3) on an iron screen of 800 meshes, and naturally drying to obtain the iron-based composite material.
Comparative example 1
Super-hydrophobic-super-oleophilic coatings prepared by the method described by Hui Liu (Chemical Engineering Journal,2017, DOI: 10.1016/j.cej.2017.07.114).
Comparative example 2
A coating comprising a low surface energy chemical phase, a monolayer-level topological physical phase, and an adhesion agent; the low surface energy chemical phase includes a polar group fluoropolymer and a first solvent; the single-stage topological physical phase comprises inorganic microparticles and a second solvent; the volume ratio of the low surface energy chemical phase to the single-level topological physical phase is 10: 4;
wherein the polar group fluoropolymer is Zonyl 9361, the first solvent is water, and the solid content of Zonyl 9361 in the low surface energy chemical phase is 3.5%;
wherein the inorganic microparticles are silica microparticles of 4 μm; the second solvent is ethanol; the solid content of the silicon dioxide micron particles in the single-layer topological physical phase is 3 percent;
wherein the adhesive is polyvinyl alcohol aqueous solution with solid content of 1.3%, and the volume of the adhesive is 5% of the total volume of the two phases of the low surface energy chemical phase and the single-layer topological physical phase.
The coating is prepared by the following method:
(1) mixing Zonyl 9361 with water to form a low surface energy chemical phase;
(2) ultrasonically mixing the silicon dioxide micron particles and ethanol to form a single-level topological physical phase;
(3) mixing the formed low surface energy chemical phase with the single-layer topological physical phase, adding a polyvinyl alcohol aqueous solution, sealing and standing for 1h, and discharging bubbles to form slurry;
(4) and (4) uniformly spraying the slurry prepared in the step (3) on a 200-mesh titanium screen, and naturally drying to obtain the titanium-based composite material.
Comparative example 3
A coating comprising a low surface energy chemical phase, a monolayer-level topological physical phase, and an adhesion agent; the low surface energy chemical phase includes a polar group fluoropolymer and a first solvent; the single-level topological physical phase comprises inorganic nanoparticles and a second solvent; the volume ratio of the low surface energy chemical phase to the single-level topological physical phase is 10: 4;
wherein the polar group fluoropolymer is Zonyl 9361, the first solvent is water, and the solid content of Zonyl 9361 in the low surface energy chemical phase is 3.5%;
wherein the inorganic nanoparticles are titanium dioxide nanoparticles with the particle size of 20 nm; the second solvent is ethanol; the solid content of the titanium dioxide nanoparticles in the single-layer topological physical phase is 3 percent;
wherein the adhesive is a polyvinyl alcohol aqueous solution with solid content of 1.3%, and the volume of the adhesive is 5% of the total volume of two phases of a low surface energy chemical phase and a single-layer topological physical phase.
The coating is prepared by the following method:
(1) mixing Zonyl 9361 with water to form a low surface energy chemical phase;
(2) ultrasonically mixing titanium dioxide nanoparticles and ethanol to form a single-level topological physical phase;
(3) mixing the formed low surface energy chemical phase with the single-layer topological physical phase, adding a polyvinyl alcohol aqueous solution, sealing and standing for 1h, and discharging bubbles to form slurry;
(4) and (4) uniformly spraying the slurry prepared in the step (3) on a 200-mesh titanium screen, and naturally drying to obtain the titanium-based composite material.
Experimental data
First, surface property test
As shown in fig. 2, the coating prepared in example 1 had a contact angle of 4.7 ° for water and 152.6 ° for oil. In addition, the coating prepared in comparative example 1 had a contact angle of 154.7 ° with respect to water and a contact angle of 7.0 ° with respect to oil. The coating prepared in comparative example 2 had a contact angle of 41.8 ° for water and 120.6 ° for oil. The coating prepared in comparative example 3 had a contact angle of 35.2 ° for water and 129.7 ° for oil. It can be seen that the multi-level topological physical phase comprising inorganic microparticles and inorganic nanoparticles in the present application enables the prepared coating to have higher hydrophilicity and oleophobicity.
Second, testing the oil-water separation efficiency
The oil-water separation efficiency test method comprises the following steps: mixing water, soybean oil and a sodium dodecyl sulfate solution (a water solution with the mass concentration of 0.25%) according to a volume ratio of 8: 1: 1 mechanically stirring and mixing to form an oil-water emulsion; and (3) demulsifying the oil-water emulsion by a screen to complete two-phase separation, counting the volume of the separated water phase mixed oil phase, and calculating the oil-water separation efficiency: v Water (W) /(V Water (W) +V Oil ) In which V is Water (W) And V Oil The volume of the separated water phase and the volume of the intermixed oil phase, respectively.
The coating prepared in example 1 had an oil-water separation efficiency of 98.6%. The coating prepared in comparative example 1 had an oil-water separation efficiency of 75.3%.
Thirdly, switching of surface wetting property
The coatings prepared in example 1 were placed in solutions of different pH with water and oil contact angles as shown in table 1. As can be seen from table 1, when the coating was exposed to an aqueous solution having a pH of about 4.4, the coating had a contact angle of 150.7 ° for water and 155.0 ° for oil. It can be seen that the coating achieves a free switch from a superhydrophilic-superoleophobic surface to a superhydrophobic-superoleophobic surface in an acidic environment at a pH of about 4.4.
TABLE 1 contact angles for solutions of different pH values
| The coating being in an aqueous environmentpH value | Water contact angle | Oil contact angle |
| 7.2 | 4.7° | 152.6° |
| 5.6 | 4.8° | 153.8° |
| 4.7 | 11.2° | 152.3° |
| 4.4 | 150.7° | 155.0° |
| 4.0 | 150.4° | 154.5° |
Fourth, acid corrosion resistance test
The coatings prepared in example 1 and comparative example 1 were placed in an acidic solution with a pH of 4.0 for 36 hours, dried at 75 ℃, left open for 48 hours, and the screens were subjected to elemental analysis tests, respectively, with the elemental analysis spectra shown in fig. 3. Fig. 3a is the screen of example 1 and fig. 3b is the screen of comparative example 1. As can be seen from fig. 3, the elemental analysis spectrum of the screen in example 1 shows no oxygen peak, indicating that the screen in example 1 has no rust, and the elemental analysis spectrum of the screen in comparative example 1 shows an oxygen peak, indicating that the rust of the screen in comparative example 1 is clearly visible.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (3)
1. The preparation method of the coating facing the oil-water separation switchable surface wettability is characterized in that the coating facing the oil-water separation switchable surface wettability comprises a low surface energy chemical phase, a multi-level topological physical phase and an adhesive; the low surface energy chemical phase comprises a polar group fluoropolymer and a first solvent; the multi-level topological physical phase comprises inorganic microparticles, inorganic nanoparticles, and a second solvent; the volume ratio of the low surface energy chemical phase to the multilevel topological physical phase is 10: 3-10; the adhesive is one of polyvinyl alcohol aqueous solution, polyvinyl alcohol pyrrolidone aqueous solution, polyethylene glycol aqueous solution and sodium carboxymethylcellulose; the volume ratio of the adhesive to the total volume of the two phases of the low surface energy chemical phase and the multilevel topological physical phase is 3-15%: 1; the polar group fluorine polymer is one or two of Zonyl 9361, Zonyl 7910, Zonyl FSA, Zonyl FSE, Capscone FS-64, Capscone FS-61, FPOSS-COOH and FPOSS-NH; the first solvent is one of water, ethanol, glycol and isopropanol; the inorganic micron particles are one of silicon dioxide micron particles, titanium dioxide micron particles, zirconium dioxide micron particles and aluminum oxide micron particles; the inorganic nano-particles are one of silicon dioxide nano-particles, titanium dioxide nano-particles, zinc oxide nano-particles and aluminum oxide nano-particles; the second solvent is one of ethanol, isopropanol, dipropylene glycol methyl ether and dipropylene glycol butyl ether; the mass ratio of the inorganic microparticles to the inorganic nanoparticles is 10: 7-20; the size of the inorganic micron particles is 1.5-9 mu m; the size of the inorganic nano particles is 10-90 nm;
the method comprises the following steps:
(1) uniformly stirring and mixing the polar group fluoropolymer and a first solvent to form a low surface energy chemical phase;
(2) ultrasonically mixing inorganic microparticles, inorganic nanoparticles and a second solvent to form a multi-level topological physical phase;
(3) mixing the formed low surface energy chemical phase with the multilevel topological physical phase, adding an adhesive, sealing, standing and discharging bubbles to form slurry;
(4) and (4) uniformly coating the slurry prepared in the step (3) on a metal screen, and naturally drying to obtain the composite material.
2. The preparation method of the coating facing the oil-water separation switchable surface wettability property of claim 1, wherein the sealing standing time is 1-5 h.
3. The method for preparing the coating facing the wettability of the oil-water separation switchable surface, according to claim 1, wherein the coating is one of spray coating, dip coating, spin coating and blade coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011382755.4A CN112569637B (en) | 2020-12-01 | 2020-12-01 | Coating capable of switching surface wettability for oil-water separation and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011382755.4A CN112569637B (en) | 2020-12-01 | 2020-12-01 | Coating capable of switching surface wettability for oil-water separation and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112569637A CN112569637A (en) | 2021-03-30 |
| CN112569637B true CN112569637B (en) | 2022-08-19 |
Family
ID=75126709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011382755.4A Active CN112569637B (en) | 2020-12-01 | 2020-12-01 | Coating capable of switching surface wettability for oil-water separation and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112569637B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521882B (en) * | 2021-07-06 | 2022-04-01 | 哈尔滨工业大学 | Dust-free paper-based flexible water treatment material and preparation method thereof |
| CN114177896B (en) * | 2021-12-15 | 2023-07-21 | 中国石油大学(北京) | Nanometer-micrometer particles with high surface free energy layer and low surface free energy layer, and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107226A (en) * | 2018-08-27 | 2019-01-01 | 大连理工大学 | A kind of metal mesh for oil-water separation preparation method that wetability is controllable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200710093A (en) * | 2005-04-22 | 2007-03-16 | Hybrid Plastics Inc | Biomimetic materials comprising polyhedral oligomeric silsesquioxanes |
| US10928548B2 (en) * | 2017-03-14 | 2021-02-23 | Saudi Arabian Oil Company | Rock type based free water level inversion |
| CN109173345B (en) * | 2018-09-21 | 2019-10-11 | 西安科技大学 | A kind of preparation method and applications of the super-amphiphobic material with pH responsiveness |
| CN109825179B (en) * | 2019-02-01 | 2021-03-02 | 东南大学 | Water-based super-hydrophilic super-oleophobic coating and preparation method and application thereof |
| CN111218208B (en) * | 2020-01-17 | 2021-10-22 | 四川农业大学 | Reversibly switchable super-wettability super-amphiphobic coating and preparation and application thereof |
-
2020
- 2020-12-01 CN CN202011382755.4A patent/CN112569637B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107226A (en) * | 2018-08-27 | 2019-01-01 | 大连理工大学 | A kind of metal mesh for oil-water separation preparation method that wetability is controllable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112569637A (en) | 2021-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112569637B (en) | Coating capable of switching surface wettability for oil-water separation and preparation method thereof | |
| CN105368304B (en) | Anticorrosive paint and preparation method thereof | |
| Xiong et al. | Superhydrophobic honeycomb-like cobalt stearate thin films on aluminum with excellent anti-corrosion properties | |
| Meng et al. | The influence of the chemically bonded interface between fillers and binder on the failure behaviour of an epoxy coating under marine alternating hydrostatic pressure | |
| Wu et al. | Continuous oil–water separation with surface modified sponge for cleanup of oil spills | |
| Eum et al. | Superhydrophobic and superoleophilic nickel foam for oil/water separation | |
| CN107583470A (en) | Super hydrophilic and underwater superoleophobic water-oil separationg film and preparation method thereof | |
| CN104497853A (en) | Preparation method of polydimethylsiloxane (PDMS)/zinc oxide super-hydrophobic composite coating | |
| CN105623475A (en) | Method for preparing self-healing coating based on environment-friendly nanometer container | |
| Peng et al. | Polyvinylidene fluoride (PVDF)/hydrophobic nano-silica (H-SiO 2) coated superhydrophobic porous materials for water/oil separation | |
| CN107964097A (en) | The ternary nano composite material preparation method and application of redox graphene, ferroso-ferric oxide and polyaniline | |
| CN109468645A (en) | A kind of selfreparing corrosion inhibiter of Q235 steel and preparation method thereof | |
| Roshan et al. | One-step fabrication of superhydrophobic nanocomposite with superior anticorrosion performance | |
| Shahriari et al. | Electrophoretic deposition of 3YSZ coating on AZ91D alloy using Al and Ni-P interlayers | |
| Xia et al. | Superhydrophobic DTES-SEP/SiO2@ PDMS coated sponge and stainless steel mesh for efficient oil and water separation | |
| CN111909583A (en) | High-adhesion water-based paint suitable for various substrates and preparation method thereof | |
| CN104958931A (en) | Super-hydrophobic and super-lipophilic net membrane for oil-water separation and preparation method thereof | |
| CN111530126A (en) | Preparation method and application of super-hydrophobic foam iron | |
| Zhu et al. | A robust duplex Cu/PDMS-coated mesh with superhydrophobic surface for applications in cleaning of spilled oil | |
| Liu et al. | Attapulgite-based superhydrophobic coating on aluminum alloy substrate with self-cleaning, anti-corrosion and robustness | |
| Kang et al. | Fabrication of superhydrophobic nano-soil coated surfaces for oil/water separation and metal corrosion protection | |
| CN110029380B (en) | Preparation method of super-hydrophobic zinc-iron composite coating on surface of carbon steel | |
| CN110791785B (en) | Electrodeposition layer-lyophobic-super-slippery triple film with composite anticorrosion function and preparation method and application thereof | |
| CN111450712A (en) | Preparation method of oil-water separation type copper-based net film material | |
| Njoku et al. | Epoxy-based bi-layer self-repairing coating with anti-corrosive functionalities for the protection of A2024 aluminum alloy |
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 |