CN112095092A - Method for preparing high-performance super-hydrophobic stainless steel by utilizing nano layered double hydroxide and prepared high-performance super-hydrophobic stainless steel - Google Patents
Method for preparing high-performance super-hydrophobic stainless steel by utilizing nano layered double hydroxide and prepared high-performance super-hydrophobic stainless steel Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/04—Pretreatment of the material to be coated
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1295—Process of deposition of the inorganic material with after-treatment of the deposited inorganic material
Abstract
The invention discloses a method for preparing high-performance super-hydrophobic stainless steel by utilizing nano layered double hydroxides and the prepared high-performance super-hydrophobic stainless steel. The method comprises the following steps: polishing and degreasing the stainless steel base material; soaking the treated stainless steel in HF acid for chemical etching, taking out, cleaning with deionized water, and drying: placing the micron-sized coarse structure obtained by chemical etching in LDHs prefabricated liquid, heating for hydrothermal treatment, taking out, cleaning with deionized water, and drying; and then placing the micro-nano LDHs coarse structure obtained by the two-step treatment in a myristic acid ethanol solution for soaking, heating and drying to obtain the super-hydrophobic surface with the water contact angle as high as 166 degrees on the stainless steel surface. The method of the invention applies LDHs to the preparation of the stainless steel super-hydrophobic surface for the first time, the preparation process is green and environment-friendly, the operation is simple, and the prepared film has high stable super-hydrophobic and self-cleaning composite performance and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of super-hydrophobic materials, and relates to a method for preparing high-performance super-hydrophobic stainless steel by using nano layered double hydroxides and the prepared high-performance super-hydrophobic stainless steel.
Background
Due to the unique wetting property, the super-hydrophobic material has wide application prospects in various fields, such as surface antifouling, anticorrosion, antifogging, anti-icing, oil-water separation, fluid drag reduction and the like.
At present, scientists prepare a series of artificially synthesized super-hydrophobic materials by imitating the lotus leaf structure in nature; for a metal material, due to the hydrophilic characteristic, two steps of micro-nano structure construction and low surface energy substance modification are needed for constructing a super-hydrophobic surface on the surface of the metal material.
At present, methods for constructing a micro-nano structure on a metal surface mainly comprise chemical etching, a sol-gel method, a laser method and the like. However, the sol-gel method, the laser method, and the like have respective limitations, such as complicated preparation process, strict preparation conditions, or expensive processing equipment, and the like, so that the superhydrophobic surface is difficult to realize large-scale application in practical production. Chemical etching is widely used to treat solid surface to roughen the solid surface and increase the surface roughness because of its simplicity and rapidity. However, chemical etching methods tend to give uneven surface topography, resulting in variability in performance (Li C, Ma R, Du A, et al. one-step surface of bipolar coating on silver plated Steel with excellent surface roughness resistance, Journal of Alloys and Compounds,2019,786:272-283.Li L, Breedveld V, Hess D W.creation of hydrophilic Stable Steel surface by Acid Treatments and Hydropholic Film Deposition, acids Applied Materials & Interfaces,2012,4(9): 4549).
Layered Double Hydroxides (LDHs) are the research hotspots in recent years, and weak bonding and strong bonding effects such as electrostatic attraction, hydrogen bonds, covalent bonds and the like exist in and between layers of the Layered Double Hydroxides (LDHs), so that the layered double hydroxides have certain thermal stability; meanwhile, the controllability (ion exchange capacity) of the material can obviously improve the corrosion resistance of the material and the self-healing capacity after high-temperature dehydration. At present, no experimental study exists for preparing the high-performance stainless steel super-hydrophobic surface by combining LDHs and stainless steel.
At present, the surface hydrophobic modified substance is mainly a macromolecular group single-layer film, and the surface energy is arranged according to the following sequence: -CH2>–CH3>–CF2>–CF2H>–CF3There are silanes, alkanoic acids, siloxanes, and the like. At present, most of the fluorine-containing silanes are used for modification, and for example, trichloro- (1H, 2H) -perfluorooctyl silane used in patent CN110625208A has a good modification effect, but the fluorine-containing silane has the defects of high price and high toxicity.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a method for preparing high-performance super-hydrophobic stainless steel by utilizing nano layered double hydroxides and the prepared high-performance super-hydrophobic stainless steel.
The invention aims to provide a brand-new preparation method for obtaining a high-performance super-hydrophobic stainless steel surface by adopting nano double hydroxide; the surface prepared by the method is continuous and uniform in appearance and excellent in hydrophobic property; the method has the advantages of simple process, no need of special equipment and no toxic substances, and greatly reduces the preparation cost of the super-hydrophobic stainless steel surface.
The purpose of the invention is realized by at least one of the following technical solutions.
The invention provides a method for preparing a high-performance super-hydrophobic stainless steel surface by using nano layered double hydroxides, which comprises the following steps:
(1) substrate pretreatment: polishing a stainless steel substrate, washing with distilled water, removing oil, soaking in an ethanol solution for ultrasonic cleaning treatment, and drying to obtain a pretreated stainless steel substrate;
(2) chemical etching: soaking the pretreated stainless steel substrate in the step (1) in hydrofluoric acid, performing chemical etching, taking out, cleaning with deionized water, and drying to obtain a stainless steel substrate with a micron-sized coarse structure;
(3) hydrothermal treatment: soaking the stainless steel substrate with the micron-scale coarse structure in the step (2) in LDHs prefabricated liquid, heating in a reaction kettle for hydrothermal treatment to obtain the stainless steel substrate with the micro-nano LDHs coarse structure;
(4) and (4) soaking the stainless steel substrate with the micro-nano LDHs coarse structure in the step (3) in an ethanol solution of myristic acid, performing modification treatment on a low-surface-energy substance, and drying to obtain the stainless steel substrate with the high-performance super-hydrophobic surface.
Further, the grinding in the step (1) is to grind the stainless steel substrate by sequentially using sand paper with the sand grain size of 180# -2000 #; the sand paper is water-resistant SiC sand paper.
Preferably, the stainless steel substrate in the step (1) has the size of 10mm × 10mm × 2 mm.
Preferably, the degreasing in step (1) comprises: and soaking the stainless steel substrate in propanol for oil removal treatment, wherein the oil removal treatment time is 5-10 min.
Preferably, the stainless steel substrate in step (1) is a 304 stainless steel substrate.
Further, the ethanol solution in the step (1) has a volume percentage concentration of 50% -95%; the time of ultrasonic cleaning treatment is 5-15 min.
Further, the mass percentage concentration of the hydrofluoric acid in the step (2) is 40-50%; the chemical etching temperature is 25-70 ℃, and the chemical etching time is 30-90 min.
Preferably, the hydrofluoric acid in the step (2) has a concentration of 40 wt%.
Preferably, the chemical etching temperature in the step (2) is 70 ℃.
Further, the drying temperature in the step (2) is 50-80 ℃, and the drying time is 15-30 min.
Further, the LDHs prefabricated liquid in the step (3) is Ni (NO)3)2·6H2O、Fe(NO3)3·9H2O、NH4F and urea; in the LDHs preformulation, Ni (NO)3)2·6H2The concentration of O is 0.03-0.05mmol/L, Fe (NO)3)3·9H2O concentration of 0.03-0.05mmol/L, NH4The concentration of F is 0.06-0.1mmol/L, and the concentration of urea is 0.15-0.3 mmol/L.
Preferably, the volume of the LDHs prefabricated liquid in the step (3) is 60ml, and the LDHs prefabricated liquid contains 2mmol of Ni (NO)3)2·6H2O，2mmol Fe(NO3)3·9H2O，4mmol NH4F and 10mmol of urea.
Further, the temperature of the hydrothermal treatment in the step (3) is 120-140 ℃, and the time of the hydrothermal treatment is 4-10 h.
Preferably, the temperature of the hydrothermal treatment in step (3) is 120 ℃.
Further, the ethanol solution of myristic acid in the step (4) has a concentration of 5 vol.% to 10 vol.%; the time for the modification treatment of the low surface energy substance is 6-10 h.
Preferably, the ethanol solution of myristic acid in step (4) has a concentration of 5 vol.%.
Further, the drying temperature in the step (4) is 100-.
Preferably, the drying time in the step (4) is 1 h.
The invention provides stainless steel with a high-performance super-hydrophobic surface, which is prepared by the preparation method.
The method provided by the invention is a method for preparing the super-hydrophobic stainless steel surface by adopting a chemical etching method and a hydrothermal method.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) according to the preparation method provided by the invention, LDHs and stainless steel are combined for the first time in the construction of the super-hydrophobic structure, so that the stainless steel super-hydrophobic surface with excellent hydrophobicity is prepared; meanwhile, the LDHs have certain thermal stability and high-temperature memory effect, and an idea is provided for realizing high stability and self-healing of the stainless steel super-hydrophobic surface.
(2) The preparation method provided by the invention combines the micron structure formed by chemical etching with the nano LDHs formed by a hydrothermal method, and solves the problems of rough and uneven surface structure caused by uneven chemical etching.
(3) According to the preparation method provided by the invention, the surface energy is reduced by using the non-fluorine-containing alkanoic acid, and the preparation process and the obtained super-hydrophobic surface are environment-friendly.
(4) The raw materials used for preparing the super-hydrophobic stainless steel surface are cheap and easy to obtain, the preparation process is simple, the production efficiency is high, and the method is suitable for industrial batch and large-area production.
Drawings
FIG. 1a is a low power SEM image of a super-hydrophobic surface of stainless steel prepared in example 1 of the present invention;
FIG. 1b is a high power SEM image of a stainless steel superhydrophobic surface made according to example 1 of the present invention;
FIG. 1c is a contact angle test chart (166 ℃) of a stainless steel superhydrophobic surface prepared in example 1 of the present invention;
FIG. 1d is a rolling angle test chart (2 °) of the stainless steel superhydrophobic surface prepared in example 1 of the present invention;
FIG. 2a is a low power SEM image of a stainless steel superhydrophobic surface made according to example 2 of the present invention;
FIG. 2b is a high power SEM image of a stainless steel superhydrophobic surface made according to example 2 of the present invention;
FIG. 2c is a contact angle test chart (160 ℃) of the stainless steel superhydrophobic surface prepared in example 2 of the present invention;
FIG. 2d is a rolling angle test chart (5 °) of the stainless steel superhydrophobic surface prepared in example 2 of the present invention;
FIG. 3a is a low power SEM image of a super-hydrophobic surface of stainless steel prepared in example 3 of the present invention;
FIG. 3b is a contact angle test chart (116 ℃) of a stainless steel hydrophobic surface prepared in example 3 of the present invention;
FIG. 4a is a polarization curve of a superhydrophobic surface of stainless steel prepared in example 1 of the present invention;
FIG. 4b is a polarization curve of the superhydrophobic surface of the stainless steel prepared in example 2 of the present invention.
Detailed Description
The following examples are presented to further illustrate the practice of the invention, but the practice and protection of the invention is not limited thereto. It is noted that the processes described below, if not specifically described in detail, are all realizable or understandable by those skilled in the art with reference to the prior art. The reagents or apparatus used are not indicated to the manufacturer, and are considered to be conventional products available by commercial purchase.
Example 1
A304 stainless steel substrate was cut into a specimen having a size of 10mm by 2 mm. Sequentially polishing the test sample by using water-resistant SiC sand paper with the sand granularity of 180 to 2000#, washing by using distilled water, removing oil in acetone for 5min, ultrasonically cleaning by using an ethanol solution (the volume percentage concentration is 95%) for 10min, and drying to obtain a treated stainless steel test sample; soaking the treated stainless steel sample in 10ml of 40 wt.% HF acid, soaking at 70 ℃ for 1h, taking out, washing with deionized water and ethanol, and drying to obtain a micron-sized coarse structure; then, the stainless steel sample with the micron-sized coarse structure is placed in a prepared 60ml of LDHs prefabricated solution (containing 2mmol of Ni (NO)3)2·6H2O，2mmol Fe(NO3)3·9H2O，4mmol NH4F and 10mmol of urea) at 120 ℃ for 6h, taking out, washing with deionized water and ethanol, and drying to obtain micro-nano LDHs coarse structures; and finally, placing the stainless steel sample with the micro-nano LDHs structure in a prepared 5 vol.% myristic acid ethanol solution, soaking for 6h at normal temperature, taking out, cleaning with deionized water and ethanol, and heating and drying for 1h at 100 ℃, so that a film with the composite functions of super hydrophobicity, self cleaning and excellent corrosion resistance is prepared on the surface of the stainless steel sample. Fig. 1 shows SEM morphology and contact angle results of the stainless steel superhydrophobic surface prepared in this example, as can be seen from fig. 1a and 1b, the micro-scale structure obtained by chemical etching has an obvious fluctuation, the micro-scale structure is uniformly covered by a nano LDHs flower-like structure after hydrothermal treatment, and meanwhile, the water contact angle of the tested surface is as high as 166 ° (fig. 1c), and the rolling angle is as low as 2 ° (fig. 1d), and the self-cleaning capability is excellent in the self-cleaning test of the sample surface covered with plant ash. Fig. 4a is a polarization curve of the super-hydrophobic surface of the stainless steel prepared in this embodiment, the self-etching current is greatly reduced, and the self-etching potential is greatly increased.
Example 2
A304 stainless steel substrate was cut into a specimen having a size of 10mm by 2 mm. Sequentially polishing the sample with water-resistant SiC sand paper with the sand granularity of 180-2000 #, washing with distilled water, removing oil in acetone for 5min, and adding ethanol solution (with volume percentage concentration of 50%) into the sampleCarrying out ultrasonic cleaning for 10min and then drying to obtain a treated stainless steel sample; placing the stainless steel sample to be treated in 10ml of 40 wt.% HF acid, soaking at 25 ℃ for 30min, taking out, washing with deionized water and ethanol, and drying to obtain a micron-sized coarse structure; then, the stainless steel sample with the micron-sized coarse structure is placed in a prepared 60ml of LDHs prefabricated solution (containing 3mmol of Ni (NO)3)2·6H2O，3mmol Fe(NO3)3·9H2O，6mmol NH4F and 15mmol of urea) at 120 ℃ for 10h, taking out, washing with deionized water and ethanol, and drying to obtain micro-nano LDHs coarse structures; finally, placing a stainless steel sample with a micro-nano LDHs coarse structure in a prepared 5 vol.% myristic acid ethanol solution, soaking for 10h at normal temperature, taking out, cleaning with deionized water and ethanol, and heating and drying at 100 ℃ for 1h, namely, preparing a super-hydrophobic and self-cleaning composite functional film layer on the surface of the stainless steel sample, wherein fig. 2 shows the SEM appearance and contact angle results of the super-hydrophobic surface of the stainless steel prepared in the embodiment, as can be seen from fig. 2a and fig. 2b, the micron-sized structure obtained by chemical etching has obvious fluctuation, the micron-sized structure is uniformly covered by a nano LDHs flower-shaped structure with larger size after hydrothermal treatment, the surface contact angle is up to 160 degrees (fig. 2c) after testing, the rolling angle is as low as 2 degrees (fig. 2d), and the stainless steel sample surface has excellent self-cleaning capability in a self-cleaning test in which plant; fig. 4b is a polarization curve of the super-hydrophobic surface of the stainless steel prepared in this embodiment, in which the self-etching current is greatly reduced and the self-etching potential is greatly increased.
Example 3
A304 stainless steel substrate was cut into a specimen having a size of 10mm by 2 mm. Sequentially polishing the test sample by using water-resistant SiC sand paper with the sand granularity of 180 to 2000#, washing the test sample by using distilled water, removing oil in acetone for 5min, ultrasonically cleaning the test sample by using an ethanol solution (the volume percentage concentration is 95%) for 10min, and drying the test sample to obtain a treated stainless steel test sample; placing the stainless steel sample to be treated in 10ml of 40 wt.% HF acid, soaking at 70 ℃ for 20min, taking out, washing with deionized water and ethanol, and drying to obtain a micron-sized coarse structure; then placing the stainless steel sample with the micron-scale coarse structureIn a prepared 60ml of LDHs prefabricated solution (containing 2mmol of Ni (NO)3)2·6H2O，2mmol Fe(NO3)3·9H2O，4mmol NH4F and 10mmol of urea) at 120 ℃ for 1h, taking out, washing with deionized water and ethanol, and drying to find that a nano LDHs coarse structure is not obtained; finally, the stainless steel sample with the microstructure is placed in a prepared 5 vol.% myristic acid ethanol solution, soaked for 10 hours at normal temperature, taken out, washed with deionized water and ethanol, and heated and dried for 1 hour at 100 ℃, and the obtained film layer is hydrophobic, wherein fig. 3a shows the micro morphology of the surface obtained in the embodiment, and the contact angle reaches 116 degrees through testing (fig. 3 b).
The above examples are only preferred embodiments of the present invention, which are intended to be illustrative and not limiting, and those skilled in the art should understand that they can make various changes, substitutions and alterations without departing from the spirit and scope of the invention.
Claims (10)
1. A method for preparing a high-performance super-hydrophobic stainless steel surface by utilizing nano layered double hydroxides is characterized by comprising the following steps:
(1) polishing, washing and deoiling a stainless steel substrate, soaking the stainless steel substrate in an ethanol solution for ultrasonic cleaning treatment, and drying to obtain a pretreated stainless steel substrate;
(2) soaking the pretreated stainless steel substrate in the step (1) in hydrofluoric acid, carrying out chemical etching, taking out, cleaning and drying to obtain a stainless steel substrate with a micron-sized coarse structure;
(3) soaking the stainless steel substrate with the micron-sized coarse structure in the step (2) in LDHs prefabricated liquid, heating and carrying out hydrothermal treatment to obtain the stainless steel substrate with the micro-nano LDHs coarse structure;
(4) and (4) soaking the stainless steel substrate with the micro-nano LDHs coarse structure in the step (3) in an ethanol solution of myristic acid, performing modification treatment on a low-surface-energy substance, and drying to obtain the stainless steel substrate with the high-performance super-hydrophobic surface.
2. The method for preparing a high-performance superhydrophobic stainless steel surface using nano-layered double hydroxide as claimed in claim 1, wherein the polishing in step (1) is sequentially polishing the stainless steel substrate using sand paper having a sand size of 180# -2000 #; the sand paper is water-resistant SiC sand paper.
3. The method for preparing the high-performance super-hydrophobic stainless steel surface by utilizing the nano-layered double hydroxide according to claim 1, wherein the ethanol solution in the step (1) has a volume percentage concentration of 50% -95%; the time of ultrasonic cleaning treatment is 5-15 min.
4. The method for preparing the high-performance super-hydrophobic stainless steel surface by utilizing the nano-layered double hydroxide according to claim 1, wherein the hydrofluoric acid in the step (2) has a concentration of 40-50% by mass; the chemical etching temperature is 25-70 ℃, and the chemical etching time is 30-90 min.
5. The method for preparing the high-performance super-hydrophobic stainless steel surface by using the nano-layered double hydroxide according to claim 1, wherein the drying temperature in the step (2) is 50-80 ℃, and the drying time is 15-30 min.
6. The method for preparing high-performance super-hydrophobic stainless steel surface by using nano-layered double hydroxide as claimed in claim 1, wherein the LDHs pre-prepared solution of step (3) is Ni (NO)3)2·6H2O、Fe(NO3)3·9H2O、NH4F and urea; in the LDHs preformulation, Ni (NO)3)2·6H2The concentration of O is 0.03-0.05mmol/L, Fe (NO)3)3·9H2O concentration of 0.03-0.05mmol/L, NH4The concentration of F is 0.06-0.1mmol/L, and the concentration of urea is 0.15-0.3 mmol/L.
7. The method for preparing the high-performance super-hydrophobic stainless steel surface by using the nano-layered double hydroxide according to claim 1, wherein the temperature of the hydrothermal treatment in the step (3) is 120-140 ℃, and the time of the hydrothermal treatment is 4-10 h.
8. The method for preparing high-performance super-hydrophobic stainless steel surface by using nano-layered double hydroxide according to claim 1, wherein the ethanol solution of myristic acid in the step (4) has a concentration of 5-10 vol%; the time for the modification treatment of the low surface energy substance is 6-10 h.
9. The method for preparing high-performance super-hydrophobic stainless steel surface by using nano-layered double hydroxide as claimed in claim 1, wherein the drying temperature in step (4) is 100-150 ℃, and the drying time is 1-3 h.
10. A stainless steel having a high-performance superhydrophobic surface prepared by the preparation method of any one of claims 1-9.
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| CN114082225A (en) * | 2021-11-12 | 2022-02-25 | 中国石油大学(华东) | Fluorine-free super-hydrophobic oil-water separation net material with self-repairing function and preparation method thereof |
| CN115041025A (en) * | 2022-06-10 | 2022-09-13 | 宁夏大学 | Multifunctional switchable wettability oil-water separation net film, and preparation method and application thereof |
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| 谢岩: ""基于水滑石涂层不锈钢网制备特殊浸润膜及性能研究"", 《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技1辑》 * |
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| CN113073322A (en) * | 2021-03-29 | 2021-07-06 | 中国科学院宁波材料技术与工程研究所 | Magnesium alloy surface corrosion-resistant super-hydrophobic film layer and preparation method and application thereof |
| CN114082225A (en) * | 2021-11-12 | 2022-02-25 | 中国石油大学(华东) | Fluorine-free super-hydrophobic oil-water separation net material with self-repairing function and preparation method thereof |
| CN115041025A (en) * | 2022-06-10 | 2022-09-13 | 宁夏大学 | Multifunctional switchable wettability oil-water separation net film, and preparation method and application thereof |
| CN115041025B (en) * | 2022-06-10 | 2023-03-10 | 宁夏大学 | Multifunctional switchable wettability oil-water separation net film, and preparation method and application thereof |
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