CN115029746B - SLIPS surface coating applicable to various metal substrates, and preparation method and application thereof - Google Patents
SLIPS surface coating applicable to various metal substrates, and preparation method and application thereof Download PDFInfo
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- CN115029746B CN115029746B CN202210875259.5A CN202210875259A CN115029746B CN 115029746 B CN115029746 B CN 115029746B CN 202210875259 A CN202210875259 A CN 202210875259A CN 115029746 B CN115029746 B CN 115029746B
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- 238000000576 coating method Methods 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 title claims abstract description 68
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 title claims abstract description 41
- 239000000758 substrate Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 39
- 230000001050 lubricating effect Effects 0.000 claims abstract description 30
- 230000003075 superhydrophobic effect Effects 0.000 claims abstract description 28
- 238000012986 modification Methods 0.000 claims abstract description 26
- 230000004048 modification Effects 0.000 claims abstract description 26
- 238000004070 electrodeposition Methods 0.000 claims abstract description 14
- 239000010687 lubricating oil Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 112
- 229910052759 nickel Inorganic materials 0.000 claims description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 47
- 229910052802 copper Inorganic materials 0.000 claims description 47
- 239000010949 copper Substances 0.000 claims description 47
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 46
- 238000009713 electroplating Methods 0.000 claims description 38
- 238000007747 plating Methods 0.000 claims description 37
- 239000011780 sodium chloride Substances 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 14
- 229920002545 silicone oil Polymers 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 10
- 239000008139 complexing agent Substances 0.000 claims description 8
- 239000002608 ionic liquid Substances 0.000 claims description 8
- 150000002815 nickel Chemical class 0.000 claims description 8
- 239000010702 perfluoropolyether Substances 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004327 boric acid Substances 0.000 claims description 7
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims description 7
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 7
- QTRSWYWKHYAKEO-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(1,1,2,2,2-pentafluoroethoxy)silane Chemical compound FC(F)(F)C(F)(F)O[Si](OC(F)(F)C(F)(F)F)(OC(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F QTRSWYWKHYAKEO-UHFFFAOYSA-N 0.000 claims description 6
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 claims description 5
- DGSDBJMBHCQYGN-UHFFFAOYSA-M sodium;2-ethylhexyl sulfate Chemical compound [Na+].CCCCC(CC)COS([O-])(=O)=O DGSDBJMBHCQYGN-UHFFFAOYSA-M 0.000 claims description 5
- VBGGLSWSRVDWHB-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(trifluoromethoxy)silane Chemical compound FC(F)(F)O[Si](OC(F)(F)F)(OC(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F VBGGLSWSRVDWHB-UHFFFAOYSA-N 0.000 claims description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 4
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000003607 modifier Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- 229910021538 borax Inorganic materials 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 claims description 2
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 230000003115 biocidal effect Effects 0.000 abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 7
- 238000005498 polishing Methods 0.000 description 7
- 239000002202 Polyethylene glycol Substances 0.000 description 6
- 229910000365 copper sulfate Inorganic materials 0.000 description 6
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 6
- 238000005238 degreasing Methods 0.000 description 6
- 229920001223 polyethylene glycol Polymers 0.000 description 6
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 150000001879 copper Chemical class 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011664 nicotinic acid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- -1 polyoxyethylene sodium sulfate Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
Abstract
The invention provides a SLIPS surface coating suitable for various metal substrates, a preparation method and application thereof, wherein the preparation method comprises the following steps: s1, performing electrodeposition on the surface of a metal substrate by using a hydrogen bubble template method to obtain a porous coating; s2, performing super-hydrophobic modification on the porous coating obtained in the step S1 to obtain a hydrophobic layer; s3, pouring lubricating oil into the hydrophobic layer obtained in the step S2 to form a lubricating layer, and finally obtaining the SLIPS surface coating which consists of the hydrophobic layer and the lubricating layer and is applicable to various metal substrates. The coating obtained by the invention has smooth characteristic and self-repairing property, and can be used in the fields of corrosion resistance, pollution resistance, antibiosis and the like.
Description
Technical Field
The invention belongs to the technical field of bionic super-slip coatings, and particularly relates to a SLIPS surface coating suitable for various metal substrates, and a preparation method and application thereof.
Background
The bionic super-slip coating has gained great attention in the fields of corrosion resistance, pollution resistance, ice resistance, drag reduction and the like due to the unique performance. The construction of the bionic super-slip coating generally comprises three steps: (1) porous structure construction; (2) superhydrophobic modification; (3) The filling amount and stable maintenance of the lubricating medium are directly determined by the construction of the porous structure, which is the most critical factor in the filling of lubricating oil. The porous structure is constructed in various ways, such as anodic oxidation, chemical etching, hydrothermal treatment, etc., but the current methods have certain limitations and can only be aimed at specific metal substrates.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a SLIPS surface coating suitable for various metal substrates, a preparation method and application thereof, and the obtained coating has smooth characteristics and self-repairing performance and can be used in the fields of corrosion resistance, pollution resistance, bacteria resistance and the like.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for preparing a SLIPS surface coating suitable for use on a variety of metal substrates, comprising the steps of:
s1, performing electrodeposition on the surface of a metal substrate by using a hydrogen bubble template method to obtain a porous coating;
s2, performing super-hydrophobic modification on the porous coating obtained in the step S1 to obtain a hydrophobic layer;
s3, pouring lubricating oil into the hydrophobic layer obtained in the step S2 to form a lubricating layer, and finally obtaining the SLIPS surface coating which consists of the hydrophobic layer and the lubricating layer and is applicable to various metal substrates.
Further, the porous plating layer is a porous nickel plating layer or a porous copper plating layer, and the pore diameter of pores in the porous plating layer is 5-150 microns.
Further, the porous nickel plating layer of the invention is prepared by the following steps: and (3) performing electrodeposition in a porous nickel electroplating solution by taking nickel as an anode and a metal substrate as a cathode, wherein the temperature is 30-60 ℃, the pH value of the porous nickel electroplating solution is 3-5, the current density is 1-200A/dm < 2 >, and the time is 20-3600 s, so as to obtain the porous nickel plating layer.
Further, the porous nickel plating solution of the present invention is prepared by the steps of: dissolving nickel salt, sodium chloride, a complexing agent and a surfactant in pure water at room temperature, and magnetically stirring until the nickel salt, the sodium chloride and the complexing agent are uniformly mixed to obtain a porous nickel electroplating solution, wherein the concentration of the nickel salt in the porous nickel electroplating solution is 0.05-5 mol/L, the concentration of the sodium chloride is 0.1-2 mol/L, the concentration of the complexing agent is 10-50 g/L, and the concentration of the surfactant is 0.05-0.2 g/L; the nickel salt is one or more of nickel chloride, nickel sulfate and nickel sulfamate, the complexing agent is one or more of citric acid, boric acid, sodium borate, potassium pyrophosphate and sodium pyrophosphate, and the surfactant is one or more of sodium 2-ethylhexyl sulfate, sodium dodecyl sulfate and alkylphenol ethoxylate sodium sulfate.
Further, the porous copper plating layer of the present invention is made by the steps of: and (3) electrodepositing the phosphorus copper serving as an anode and a metal substrate serving as a cathode in a porous copper electroplating solution at the temperature of 30-60 ℃, wherein the pH value of the porous copper electroplating solution is 3-5, the current density is 5-300A/dm < 2 >, and the time is 20-3600 s, so as to obtain the porous copper plating layer.
Further, the porous copper plating solution of the present invention is prepared by the steps of: dissolving copper salt, acid and additives in pure water at room temperature, and magnetically stirring until the copper salt, the acid and the additives are uniformly mixed to obtain a porous copper electroplating solution, wherein the concentration of the copper salt in the porous copper electroplating solution is 0.1-5 mol/L, the concentration of the acid is 0.1-3 mol/L, and the concentration of the additives is 30-1000 mg/L; the copper salt is one or two of copper sulfate and copper chloride, the acid is one or two of sulfuric acid and hydrochloric acid, and the additive is one or two of sodium chloride and polyethylene glycol.
Further, the metal substrate of the present invention is made of copper, nickel, stainless steel or titanium.
Further, the step S2 of the present invention is: soaking the porous coating obtained in the step S1 in a super-hydrophobic modification solution for 20-40 minutes, taking out, placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of a super-hydrophobic modifier and a solvent in a volume ratio of 1:49-99, the super-hydrophobic modifier is one or more of stearic acid, perfluoro decyl trimethoxy silane and perfluoro decyl triethoxy silane, and the solvent is ethanol; the step S3 is as follows: and (2) dripping lubricating oil into the hydrophobic layer obtained in the step (S2) to enable the lubricating oil to be fully poured into the pores of the porous coating to form a lubricating layer, then placing the lubricating layer at an angle of 45 ℃ for 1 hour to discharge excessive lubricating oil, and finally obtaining the SLIPS surface coating which consists of the hydrophobic layer and the lubricating layer and is applicable to various metal substrates, wherein the lubricating oil is one or more of perfluoropolyether, dimethyl silicone oil and ionic liquid.
Compared with the prior art, the invention has the following beneficial effects:
the invention firstly utilizes a hydrogen bubble template method to construct a porous coating on a metal substrate by electrodeposition, then sequentially carries out super-hydrophobic modification and lubricating liquid filling, and the hydrogen bubble template method can form the porous coating with a porous structure and a larger specific surface area through cathodic hydrogen evolution reaction, so that the porous coating has stronger binding force with the metal substrate, is suitable for various metal substrates, and the porous structure can effectively increase the filling amount of lubricating oil, so that the obtained coating has smooth characteristics and self-repairing performance, and can be used in the fields of drag reduction, corrosion resistance, pollution prevention, antibiosis and the like.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an SEM topography of the SLIPS surface coating prepared in example 1 of the present invention;
FIG. 2 is a schematic diagram showing the contact angle of the hydrophobic layer obtained in step S2 in example 1 of the present invention;
fig. 3 is a schematic diagram showing the contact angle of the lubricating layer obtained in step S3 in example 1 of the present invention.
Detailed Description
The invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed embodiment.
Example 1: the SLIPS surface coating was prepared as follows:
s1, the metal base material is pure copper, and is used as the material after degreasing, rust removal and polishingAnd (3) carrying out electrodeposition in a porous nickel electroplating solution by taking nickel as an anode, wherein the temperature is 50 ℃, the pH value of the porous nickel electroplating solution is 4.5, and the current density is 5A/dm 2 The time is 1200s, and the porous nickel plating layer is obtained; the porous nickel plating solution is prepared by the following steps: dissolving nickel sulfate, sodium chloride, boric acid and sodium dodecyl sulfate in pure water at room temperature, and magnetically stirring until the mixture is uniformly mixed to obtain a porous nickel plating solution, wherein the concentration of nickel sulfate in the porous nickel plating solution is 0.5mol/L, the concentration of sodium chloride is 0.5mol/L, the concentration of boric acid is 35g/L, and the concentration of sodium dodecyl sulfate is 0.1g/L;
s2, soaking the porous nickel coating obtained in the step S1 in a super-hydrophobic modification solution for 30 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of perfluorodecyl triethoxysilane and ethanol in a volume ratio of 1:99;
s3, dripping 1000 mu L of perfluoropolyether into the hydrophobic layer obtained in the step S2, fully pouring the perfluoropolyether into the pores of the porous nickel coating to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the redundant perfluoropolyether, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
Example 2: the SLIPS surface coating was prepared as follows:
s1, a metal substrate is 316L stainless steel, oil removal, rust removal and polishing are carried out on the metal substrate to be used as a cathode, nickel is used as an anode to carry out electrodeposition in a porous nickel electroplating solution, the temperature is 50 ℃, the pH value of the porous nickel electroplating solution is 4.5, and the current density is 10A/dm 2 The time is 1200s, and the porous nickel plating layer is obtained; the porous nickel plating solution is prepared by the following steps: dissolving nickel chloride, sodium chloride, boric acid and sodium dodecyl sulfate in pure water at room temperature, and magnetically stirring until the nickel chloride, the sodium chloride, the boric acid and the sodium dodecyl sulfate are uniformly mixed to obtain a porous nickel plating solution, wherein the concentration of nickel sulfate in the porous nickel plating solution is 0.5mol/L, the concentration of sodium chloride is 1mol/L, the concentration of boric acid is 35g/L, and the concentration of sodium dodecyl sulfate is 0.1g/L;
s2, soaking the porous nickel coating obtained in the step S1 in a super-hydrophobic modification solution for 30 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of perfluorodecyl triethoxysilane and ethanol in a volume ratio of 1:49;
s3, dripping 1000 mu L of dimethyl silicone oil into the hydrophobic layer obtained in the step S2, fully pouring the dimethyl silicone oil into the pores of the porous nickel plating layer to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the excessive dimethyl silicone oil, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
Example 3: the SLIPS surface coating was prepared as follows:
s1, using pure copper as a metal substrate, degreasing, derusting and polishing the pure copper as a cathode, and using phosphorus copper as an anode to carry out electrodeposition in a porous copper electroplating solution, wherein the temperature is 50 ℃, the pH value of the porous copper electroplating solution is 4.5, and the current density is 5A/dm 2 The time is 1200s, and the porous copper plating layer is obtained; the porous copper electroplating solution is prepared by the following steps: dissolving copper sulfate, sulfuric acid and sodium chloride in pure water at room temperature, and magnetically stirring until the copper sulfate, sulfuric acid and sodium chloride are uniformly mixed to obtain a porous copper electroplating solution, wherein the concentration of the copper sulfate in the porous copper electroplating solution is 0.5mol/L, the concentration of the sulfuric acid is 1mol/L, and the concentration of the sodium chloride is 500mg/L;
s2, soaking the porous copper coating obtained in the step S1 in a super-hydrophobic modification solution for 30 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of stearic acid and ethanol in a volume ratio of 1:99;
s3, dripping 1000 mu L of dimethyl silicone oil into the hydrophobic layer obtained in the step S2, fully pouring the dimethyl silicone oil into the pores of the porous copper plating layer to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the excessive dimethyl silicone oil, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
Example 4: the SLIPS surface coating was prepared as follows:
s1, a metal substrate is 316L stainless steel, oil removal, rust removal and polishing are carried out on the metal substrate to be used as a cathode, phosphorus copper is used as an anode to carry out electrodeposition in a porous copper electroplating solution, the temperature is 50 ℃, the pH value of the porous copper electroplating solution is 4.5, and the current density is 5A/dm 2 The time is 1200s, and the porous copper plating layer is obtained; the porous copper electroplating solution is prepared by the following steps: copper sulfate, sulfuric acid, and the like at room temperature,Dissolving polyethylene glycol in pure water, magnetically stirring until the mixture is uniformly mixed to obtain a porous copper electroplating solution, wherein the concentration of copper sulfate in the porous copper electroplating solution is 0.5mol/L, the concentration of sulfuric acid is 1mol/L, and the concentration of polyethylene glycol is 100mg/L;
s2, soaking the porous copper coating obtained in the step S1 in a super-hydrophobic modification solution for 30 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of stearic acid and ethanol in a volume ratio of 1:49;
s3, dripping 1000 mu L of dimethyl silicone oil into the hydrophobic layer obtained in the step S2, fully pouring the dimethyl silicone oil into the pores of the porous copper plating layer to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the excessive dimethyl silicone oil, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
By characterizing the morphology and wettability of the coatings formed in examples 2-4 in the manner of example 1, similar characterization results as in example 1 were obtained. In conclusion, the method overcomes the limitations of the existing coating construction method, is suitable for various metal substrates, and the obtained coating has smooth characteristics and self-repairing performance, and can be used in the fields of drag reduction, corrosion resistance, pollution prevention, antibiosis and the like.
Example 5: the SLIPS surface coating was prepared as follows:
s1, using pure copper as a metal substrate, degreasing, derusting and polishing the pure copper as a cathode, and using nickel as an anode to carry out electrodeposition in a porous nickel electroplating solution, wherein the temperature is 30 ℃, the pH value of the porous nickel electroplating solution is 3, and the current density is 200A/dm 2 The time is 20s, and the porous nickel plating layer is obtained; the porous nickel plating solution is prepared by the following steps: dissolving nickel sulfamate, sodium chloride, citric acid and 2-ethylhexyl sodium sulfate in pure water at room temperature, and magnetically stirring until the nickel sulfamate, the sodium chloride and the 2-ethylhexyl sodium sulfate are uniformly mixed to obtain a porous nickel plating solution, wherein the concentration of the nickel sulfamate in the porous nickel plating solution is 5mol/L, the concentration of the sodium chloride is 2mol/L, the concentration of the citric acid is 10g/L, and the concentration of the 2-ethylhexyl sodium sulfate is 0.05g/L;
s2, soaking the porous nickel coating obtained in the step S1 in a super-hydrophobic modification solution for 20 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of perfluorodecyl trimethoxy silane and ethanol in a volume ratio of 1:59;
s3, dripping 1000 mu L of the ionic liquid into the hydrophobic layer obtained in the step S2, fully pouring the ionic liquid into the pores of the porous nickel plating layer to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the redundant ionic liquid, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
Example 6: the SLIPS surface coating was prepared as follows:
s1, taking titanium as a metal substrate, degreasing, derusting and polishing the metal substrate as a cathode, taking nickel as an anode, and performing electrodeposition in a porous nickel electroplating solution, wherein the temperature is 60 ℃, the pH value of the porous nickel electroplating solution is 5, and the current density is 1A/dm 2 Obtaining the porous nickel coating after 3600 s; the porous nickel plating solution is prepared by the following steps: dissolving nickel sulfate, sodium chloride, sodium pyrophosphate and alkylphenol polyoxyethylene sodium sulfate in pure water at room temperature, magnetically stirring until the mixture is uniform to obtain a porous nickel plating solution, wherein the concentration of nickel sulfate in the porous nickel plating solution is 0.05mol/L, the concentration of sodium chloride is 0.1mol/L, the concentration of sodium pyrophosphate is 50g/L, and the concentration of alkylphenol polyoxyethylene sodium sulfate is 0.2g/L;
s2, soaking the porous nickel coating obtained in the step S1 in a super-hydrophobic modification solution for 40 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of perfluorodecyl triethoxysilane and ethanol in a volume ratio of 1:79;
s3, dripping 1000 mu L of dimethyl silicone oil into the hydrophobic layer obtained in the step S2, fully pouring the dimethyl silicone oil into the pores of the porous nickel plating layer to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the excessive dimethyl silicone oil, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
Example 7: the SLIPS surface coating was prepared as follows:
s1, taking nickel as a metal substrate, degreasing, derusting and polishing the metal substrate as a cathode, taking phosphorus copper as an anode, and carrying out electrodeposition in a porous copper electroplating solution, wherein the temperature is 30 ℃, the pH value of the porous copper electroplating solution is 3, and carrying out electrodepositionThe flow density was 300A/dm 2 The time is 20s, and the porous copper plating layer is obtained; the porous copper electroplating solution is prepared by the following steps: dissolving copper chloride, hydrochloric acid and sodium chloride in pure water at room temperature, and magnetically stirring until the copper chloride, the hydrochloric acid and the sodium chloride are uniformly mixed to obtain a porous copper electroplating solution, wherein the concentration of the copper chloride in the porous copper electroplating solution is 0.1mol/L, the concentration of the hydrochloric acid is 0.1mol/L, and the concentration of the sodium chloride is 30mg/L;
s2, soaking the porous copper coating obtained in the step S1 in a super-hydrophobic modification solution for 20 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of perfluorodecyl trimethoxy silane and ethanol in a volume ratio of 1:79;
s3, dripping 1000 mu L of perfluoropolyether into the hydrophobic layer obtained in the step S2, fully pouring the perfluoropolyether into the pores of the porous copper coating to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the redundant perfluoropolyether, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
Example 8: the SLIPS surface coating was prepared as follows:
s1, taking titanium as a metal substrate, degreasing, derusting and polishing the metal substrate as a cathode, taking phosphorus copper as an anode, and carrying out electrodeposition in a porous copper electroplating solution, wherein the temperature is 60 ℃, the pH value of the porous copper electroplating solution is 5, and the current density is 150A/dm 2 Obtaining the porous copper coating after 3600 s; the porous copper electroplating solution is prepared by the following steps: dissolving copper chloride, hydrochloric acid and polyethylene glycol in pure water at room temperature, and magnetically stirring until the copper chloride, the hydrochloric acid and the polyethylene glycol are uniformly mixed to obtain a porous copper electroplating solution, wherein the concentration of the copper chloride in the porous copper electroplating solution is 5mol/L, the concentration of the hydrochloric acid is 3mol/L, and the concentration of the polyethylene glycol is 1000mg/L;
s2, soaking the porous copper coating obtained in the step S1 in a super-hydrophobic modification solution for 40 minutes, taking out, and then placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the super-hydrophobic modification solution consists of perfluorodecyl triethoxysilane and ethanol in a volume ratio of 1:59;
s3, dripping 1000 mu L of the ionic liquid into the hydrophobic layer obtained in the step S2, fully pouring the ionic liquid into the pores of the porous copper plating layer to form a lubricating layer, and then standing at an angle of 45 degrees for 1 hour to discharge the redundant ionic liquid, thereby finally obtaining the SLIPS surface coating consisting of the hydrophobic layer and the lubricating layer.
While the invention has been described with reference to an illustrative embodiment, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A method for preparing a SLIPS surface coating for a plurality of metal substrates, comprising the steps of:
s1, performing electrodeposition on the surface of a metal substrate by using a hydrogen bubble template method to obtain a porous coating, wherein the porous coating is a porous nickel coating, and the aperture of a pore is 5-150 microns;
s2, performing super-hydrophobic modification on the porous coating obtained in the step S1 to obtain a hydrophobic layer;
s3, pouring lubricating oil into the hydrophobic layer obtained in the step S2 to form a lubricating layer, and finally obtaining SLIPS surface coating which consists of the hydrophobic layer and the lubricating layer and is applicable to various metal substrates;
the preparation method of the porous nickel coating comprises the following steps: using nickel as anode and metal base material as cathode, and making electrodeposition in porous nickel electroplating solution at 30-60 deg.C and current density of 1-200A/dm 2 The time is 20-3600 s, the pH value of the porous nickel plating solution is 3-5, and the porous nickel plating solution contains 0.05-5 mol/L nickel salt, 0.1-2 mol/L sodium chloride, 10-50 g/L complexing agent and 0.05-0.2 g/L surfactant.
2. The method of preparing a SLIPS surface coating for a variety of metal substrates according to claim 1, wherein the porous nickel plating solution is prepared by the steps of: dissolving nickel salt, sodium chloride, a complexing agent and a surfactant in pure water at room temperature, and magnetically stirring until the nickel salt, the sodium chloride, the complexing agent and the surfactant are uniformly mixed to obtain a porous nickel electroplating solution; wherein the nickel salt is one or more of nickel chloride, nickel sulfate and nickel sulfamate, the complexing agent is one or more of citric acid, boric acid, sodium borate, potassium pyrophosphate and sodium pyrophosphate, and the surfactant is one or more of sodium 2-ethylhexyl sulfate, sodium dodecyl sulfate and alkylphenol ethoxylate sodium sulfate.
3. A method of preparing a SLIPS surface coating for a variety of metal substrates according to claim 1, wherein the metal substrate is made of copper, nickel, stainless steel or titanium.
4. The method for preparing a SLIPS surface coating for various metal substrates according to claim 1, wherein the step S2 is: soaking the porous coating obtained in the step S1 in the superhydrophobic modification solution for 20-40 minutes, taking out, placing in a baking oven at 120 ℃ for 60 minutes to obtain a hydrophobic layer, wherein the superhydrophobic modification solution comprises the following components in volume ratio of 1: the super-hydrophobic modifier of (49-99) is composed of one or more of stearic acid, perfluorodecyl trimethoxy silane and perfluorodecyl triethoxy silane and a solvent which is ethanol;
the step S3 is as follows: and (2) dripping lubricating oil into the hydrophobic layer obtained in the step (S2) to enable the lubricating oil to be fully poured into the pores of the porous coating to form a lubricating layer, then placing the lubricating layer at an angle of 45 ℃ for 1 hour to discharge excessive lubricating oil, and finally obtaining the SLIPS surface coating, wherein the lubricating oil is one or more of perfluoropolyether, dimethyl silicone oil and ionic liquid.
5. The SLIPS surface coating which is obtained by the preparation method and is applicable to various metal substrates.
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