CN116875091A - Stainless steel matrix surface super-hydrophobic film and preparation method thereof - Google Patents
Stainless steel matrix surface super-hydrophobic film and preparation method thereof Download PDFInfo
- Publication number
- CN116875091A CN116875091A CN202310851410.6A CN202310851410A CN116875091A CN 116875091 A CN116875091 A CN 116875091A CN 202310851410 A CN202310851410 A CN 202310851410A CN 116875091 A CN116875091 A CN 116875091A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- steel substrate
- super
- nano
- hydrophobic film
- 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.)
- Pending
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 86
- 239000010935 stainless steel Substances 0.000 title claims abstract description 86
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 84
- 239000011159 matrix material Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 99
- 239000002245 particle Substances 0.000 claims abstract description 94
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 79
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 44
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 44
- 239000011787 zinc oxide Substances 0.000 claims abstract description 40
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 34
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 34
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000008117 stearic acid Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 74
- 238000005507 spraying Methods 0.000 claims description 39
- 238000005488 sandblasting Methods 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 16
- 238000005498 polishing Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 13
- 235000019441 ethanol Nutrition 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 11
- 239000010963 304 stainless steel Substances 0.000 claims description 10
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000002086 nanomaterial Substances 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- 239000002105 nanoparticle Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- SHXXPRJOPFJRHA-UHFFFAOYSA-K iron(iii) fluoride Chemical compound F[Fe](F)F SHXXPRJOPFJRHA-UHFFFAOYSA-K 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 238000000707 layer-by-layer assembly Methods 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- -1 perfluoro octyl trimethoxy silane ethanol Chemical compound 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a stainless steel matrix surface super-hydrophobic film and a preparation method thereof, belonging to the technical field of hydrophobic materials. The raw material components of the super-hydrophobic film consist of nano silicon dioxide particles with the particle size of 45-55 nm, nano zinc oxide particles with the particle size of 15-25 nm, stearic acid, a curing agent and solvent ethanol; wherein, the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1 (1-2): 1; the mass ratio of the sum of the mass of the nano silicon dioxide particles and the mass of the nano zinc oxide particles to the mass of the curing agent is (10-15): 1, a step of; the ratio of the total mass (g) of the nano silicon dioxide particles and the nano zinc oxide particles to the volume (mL) of the ethanol is (1-1.5): 50; the micro-nano structure of the super-hydrophobic film on the surface of the stainless steel matrix is compact in arrangement, uniform in components, excellent in super-hydrophobic performance, good in stability and weather resistance, simple in preparation process steps and capable of being well adapted to stainless steel matrixes with various shapes.
Description
Technical Field
The invention relates to a stainless steel matrix surface super-hydrophobic film and a preparation method thereof, belonging to the technical field of hydrophobic materials.
Background
In recent years, under the influence of lotus leaf effect, people begin to research the super-hydrophobic surface, and the super-hydrophobic film becomes a hot spot problem for domestic and foreign research. The super-hydrophobic film is mainly characterized in that the contact angle of water on the surface of the film material is more than 150 degrees, and the rolling angle is less than 10 degrees; the liquid is spherical on the super-hydrophobic film, can fall off only by a small inclination angle, is difficult to stay, and can take away surface dust and the like at the same time, so that the self-cleaning effect is achieved; in addition, the super-hydrophobic film has excellent characteristics of water resistance, bacteria resistance, corrosion resistance and the like, and is widely applied to various aspects of society such as marine warships, ships, wires and the like.
The super-hydrophobic film is made on the surface of the stainless steel matrix, which is an important means for metal corrosion prevention. At present, a common dipping method, a spraying method, layer-by-layer assembly, magnetron sputtering, reactive laser etching and the like are used for preparing a super-hydrophobic film on the surface of stainless steel, and the film prepared by the method can reach a super-hydrophobic state, but has the defects of overhigh cost, complex operation, poor film stability, easiness in damage, poor durability and the like, and is difficult to prepare in a large area and put into practical application.
Patent CN110359044B discloses a preparation method of a super-hydrophobic film on the surface of a steel substrate, which comprises the following steps: polishing the steel matrix and degreasing pretreatment, and removing greasy dirt and oxide on the surface of the steel matrix until the surface is smooth; immersing the steel substrate after the treatment in ferric trifluoride solution, and combining chemical etching and electrochemical etching to obtain the surface of the rough steel substrate; soaking the etched steel substrate in stearic acid and perfluoro octyl trimethoxy silane ethanol solution for modification for a period of time, drying at constant temperature, spraying the modified super-hydrophobic nano silicon dioxide solution on the surface of the steel substrate, and performing heat treatment to obtain a super-hydrophobic composite film; the method has complex processing steps and higher cost on the steel matrix, so that development of the stainless steel surface super-hydrophobic film which is simple in preparation process, low in raw material cost, easy to obtain, nontoxic, pollution-free, uniform and compact is needed.
Disclosure of Invention
In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a super-hydrophobic film on the surface of a stainless steel substrate, wherein the super-hydrophobic film has compact micro-nano structure arrangement, uniform components, excellent super-hydrophobic performance, good stability and weather resistance;
the second purpose of the invention is to provide a preparation method of the super-hydrophobic film on the surface of the stainless steel substrate, the method has simple process steps and low cost, the prepared super-hydrophobic film can be well adapted to complex environments, the method is suitable for stainless steel substrates with various shapes, is easy to repair, and can recover the super-hydrophobic state by spraying again after the super-hydrophobic state is damaged, and the operation is simple and convenient.
The aim of the invention is achieved by the following technical scheme.
The raw material components of the super-hydrophobic film are composed of nano silicon dioxide particles, nano zinc oxide particles, stearic acid, a curing agent and solvent ethanol;
wherein the particle size of the nano silicon dioxide particles is 45-55 nm; the particle size of the nano zinc oxide particles is 15-25 nm;
the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1 (1-2) 1;
the mass ratio of the sum of the mass of the nano silicon dioxide particles and the mass of the nano zinc oxide particles to the mass of the curing agent is (10-15): 1, a step of;
the ratio of the total mass (g) of the nano silicon dioxide particles and the nano zinc oxide particles to the volume (mL) of the ethanol is (1-1.5): 50.
preferably, the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1:2:1.
a preparation method of a super-hydrophobic film on the surface of a stainless steel matrix comprises the following steps:
(1) Sand blasting and polishing the surface of the stainless steel matrix until the roughness (Ra) is 3-7 mu m;
(2) Firstly, adding nano silicon dioxide particles into absolute ethyl alcohol, and stirring until the nano silicon dioxide particles are uniformly dispersed; then adding nano zinc oxide particles, and continuing stirring until the nano zinc oxide particles are uniformly dispersed; adding stearic acid, stirring for 10-15 min, adding a curing agent, and stirring for 15-20 min to obtain a suspension;
(3) Spraying the suspension obtained in the step (2) on the surface of the stainless steel substrate cleaned after the sand blasting and polishing in the step (1) by adopting an air spraying method, and forming a super-hydrophobic film on the surface of the stainless steel substrate after drying;
the technological parameters of the air spraying are as follows: the spraying distance is 40 cm-60 cm, the spraying air pressure is 0.2 MPa-0.4 MPa, the spraying times are 1-2 times, and the spraying time is 2 s-3 s each time.
Preferably, the stainless steel substrate is a 304 stainless steel plate.
Preferably, in the step (1), firstly cleaning the stainless steel substrate by using clear water, then performing sand blasting treatment on the surface of the stainless steel substrate by using a sand blaster, blowing out residual sand on the surface of the stainless steel substrate by using compressed air, respectively ultrasonically cleaning a workpiece after sand blasting by using deionized water and absolute ethyl alcohol for 3-5 min, and drying the absolute ethyl alcohol by using hot air to obtain the surface of the stainless steel substrate cleaned after sand blasting and polishing.
Preferably, in the step (1), the surface of the stainless steel substrate is sandblasted until the roughness (Ra) is 5 μm to 7 μm.
Preferably, in the step (3), the process parameters of the air spraying are as follows: the spraying distance is 50 cm-60 cm, and the spraying air pressure is 0.2 MPa-0.3 MPa.
Advantageous effects
(1) The invention provides a super-hydrophobic film on the surface of a stainless steel matrix, which consists of nano silicon dioxide particles, nano zinc oxide particles, stearic acid and a curing agent; the nano zinc oxide particles and the nano silicon dioxide particles can react with hydroxyl groups on the surface of stearic acid, so that the surface energy of the nano particles is reduced, and the film is in a super-hydrophobic state; in addition, the mass ratio of the nano particles to the stearic acid is optimized, and the method is different from the method which is generally considered in the prior art, the dosage of the stearic acid added with the low-surface-energy surfactant is large, the super-hydrophobic modification effect is good, and based on a large number of experiments, the method is found that the film loses the super-hydrophobic property due to the fact that the excessive stearic acid added with the low-surface-energy surfactant is critical to the mass ratio between the stearic acid and the nano particles, and the stearic acid is used as the low-surface-energy surfactant, and the effect is better when the stearic acid is not added more, because the stearic acid is widely grafted on the surfaces of a stainless steel substrate and the micro-nano structure, and part of the micro-nano structure is covered, so that the hydrophobicity is reduced.
(2) The invention provides a super-hydrophobic film on the surface of a stainless steel matrix, which is prepared by modifying two particles of nano silicon dioxide and nano zinc oxide by taking stearic acid as a low-surface-energy active agent; unlike available technology, which uses low surfactant to modify super-hydrophobic nanometer particle, the present invention uses low surfactant stearic acid to modify super-hydrophobic nanometer particle in two different sizes, and during mixing of the nanometer particle, the gap between the large particle and the nanometer particle is filled with small size particle, so as to form fine, compact and homogeneously distributed micro-nano structure.
(3) The invention provides a preparation method of a super-hydrophobic film on the surface of a stainless steel matrix, which adopts a sand blasting mode to polish the stainless steel matrix to ensure that the roughness reaches 3-7 mu m; the sand blasting polishing mode can form uniformly and stably distributed micron-sized roughness surfaces on the stainless steel surface, the uniformly distributed micron-sized roughness surfaces and nano particles form stably and tightly arranged micro-nano structures, the super-hydrophobic performance of the film is improved, and the bonding firmness degree of the super-hydrophobic film and a stainless steel base matrix is improved; the preparation method of the super-hydrophobic film on the surface of the stainless steel matrix has the advantages of simple preparation process, easy repair after the film is damaged, low-cost and easily-obtained experimental materials and excellent practical performance.
(4) The invention provides a preparation method of a super-hydrophobic film on the surface of a stainless steel matrix, wherein in the preparation process of the super-hydrophobic film, nano silicon dioxide particles are firstly added into ethanol, and then nano zinc oxide, stearic acid and a curing agent are sequentially added; compared with the method that two kinds of nano particles are added at the same time, or nano zinc oxide particles are added first and then nano silicon dioxide particles are added, the method can avoid the agglomeration phenomenon and even precipitation phenomenon of the obtained suspension liquid by adding the nano silicon dioxide particles with lighter specific gravity and then the zinc oxide nano particles with heavier specific gravity; the addition sequence can lead the reactants to be dispersed uniformly, and the prepared super-hydrophobic film has uniform components and good stability.
Drawings
FIG. 1 is a schematic diagram showing the static water contact angle of the super-hydrophobic film on the surface of the stainless steel substrate prepared in example 1;
FIG. 2 is a Scanning Electron Microscope (SEM) image of the super-hydrophobic film on the surface of the stainless steel substrate prepared in example 1;
FIG. 3 is a schematic view of the static water contact angle of the super-hydrophobic film on the surface of the stainless steel substrate prepared in example 2;
FIG. 4 is a Scanning Electron Microscope (SEM) image of the super-hydrophobic film on the surface of the stainless steel substrate prepared in example 2;
FIG. 5 is a schematic diagram showing the static water contact angle of the super-hydrophobic film on the surface of the stainless steel substrate prepared in comparative example 1;
fig. 6 is a schematic diagram of static water contact angle of the super-hydrophobic film on the surface of the stainless steel substrate prepared in comparative example 2.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific examples, which are conventional methods unless otherwise indicated, and which are commercially available from the public sources unless otherwise indicated.
In the following comparative examples and examples:
the model of the sand blaster is 9080 common pressure, and Zhengzhou macro-mechanical equipment limited company;
the model of the air spraying spray gun is R2-R, taiwan Baoli;
the curing agent is organosilicon elastomer curing agent, and is SYLGARD TM 184, shanghai Ji base trade Limited;
surface roughness test: testing by adopting a coarser instrument with the model of TR100, and detecting equipment limited company by Beijing Jitaike instrument;
contact angle and roll angle test: the contact angle measuring instrument of the whole inclined platform with the model CA500 is adopted for testing, and the big Dipper precision instrument is available in Guangdong province.
Example 1
The raw material components of the super-hydrophobic film are composed of nano silicon dioxide particles, nano zinc oxide particles, stearic acid, a curing agent and solvent ethanol;
wherein the particle size of the nano silicon dioxide particles is 45-55 nm; the particle size of the nano zinc oxide particles is 15-25 nm;
the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1:1:1;
the mass ratio of the sum of the masses of the nano silicon dioxide particles and the nano zinc oxide particles to the curing agent is 10:1;
the ratio of the total mass (g) of the nano silicon dioxide particles and the nano zinc oxide particles to the volume (mL) of the ethanol is 1:50.
The preparation method of the super-hydrophobic film on the surface of the stainless steel substrate comprises the following specific steps:
(1) Cleaning 304 the stainless steel matrix with clear water to remove oil stains and dust on the surface; then, carrying out sand blasting treatment on the surface of the 304 stainless steel substrate by adopting a sand blaster, and blowing out residual sand on the surface of the 304 stainless steel substrate by adopting compressed air; measuring the surface roughness of the stainless steel matrix subjected to sand blasting treatment by adopting a roughometer, wherein the measured roughness is 5 mu m; respectively and sequentially ultrasonically cleaning the surface of the substrate after sand blasting by using deionized water and absolute ethyl alcohol for 3min, and drying the absolute ethyl alcohol by hot air to obtain the surface of the clean stainless steel substrate after sand blasting and polishing;
(2) Firstly, adding 0.5g of nano silicon dioxide particles into 50mL of absolute ethyl alcohol, and stirring for 3min to obtain ethanol dispersion liquid of nano silicon dioxide; then adding 0.5g of nano zinc oxide particles into the ethanol dispersion liquid of the nano silicon dioxide, and continuously stirring for 3min to obtain a nano particle dispersion liquid; adding 0.5g of stearic acid into the nanoparticle dispersion liquid, stirring for 10min, and finally adding 0.1g of organosilicon elastomer curing agent, and stirring for 15min to obtain suspension liquid;
(3) Spraying the suspension obtained in the step (2) on the surface of the stainless steel substrate subjected to sand blasting, polishing and cleaning in the step (1) by using a spray gun, wherein the spray gun is vertical to the stainless steel substrate, the spraying distance is 50cm, the spraying air pressure is 0.3MPa, the spraying times are 1 time, the spraying time is 2s each time, after the spraying is finished, the 304 stainless steel substrate sprayed with the suspension is placed into a drying oven, and drying is performed at 80 ℃ to form a super-hydrophobic film on the surface of the 304 stainless steel substrate.
The static water contact angle and the rolling angle of the super-hydrophobic film on the surface of the stainless steel substrate prepared in the embodiment 1 are tested, the static water contact angle result is shown in figure 1, the average static water contact angle of the super-hydrophobic film is 157 degrees, the rolling angle is 5 degrees, and excellent super-hydrophobic performance is shown;
the microscopic morphology of the super-hydrophobic film on the surface of the stainless steel substrate prepared in the embodiment 1 is tested, the result of a field emission scanning electron microscope is shown in fig. 2, the thickness of the film is 0.13mm, the surface of the film is of a typical villus structure, nano silicon dioxide particles and nano zinc oxide particles are uniformly dispersed in the film, the condition of overlap joint among the particles is good, and a fine and closely arranged micro-nano structure is formed with the surface of the stainless steel after sand blasting.
The roughness of the super-hydrophobic film on the surface of the stainless steel substrate prepared in example 1 is tested, and the roughness of the super-hydrophobic film is 1.65 μm, which indicates that the micro-nano level roughness structure formed by the preparation method of the super-hydrophobic film on the surface of the stainless steel substrate in this example is large, so that the contact angle of water drops on the surface of the stainless steel substrate can be greatly improved, the sliding angle is reduced, and the super-hydrophobic performance is improved.
Example 2
The raw material components of the super-hydrophobic film are composed of nano silicon dioxide particles, nano zinc oxide particles, stearic acid, a curing agent and solvent ethanol;
wherein the particle size of the nano silicon dioxide particles is 45-55 nm; the particle size of the nano zinc oxide particles is 15-25 nm;
the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1:2:1;
the mass ratio of the sum of the masses of the nano silicon dioxide particles and the nano zinc oxide particles to the curing agent is 15:1;
the ratio of the total mass (g) of the nano-silica particles and nano-zinc oxide particles to the volume (mL) of ethanol is 1.5:50.
The preparation method of the super-hydrophobic film on the surface of the stainless steel substrate comprises the following specific steps:
(1) Cleaning 304 the stainless steel matrix with clear water to remove oil stains and dust on the surface; then, carrying out sand blasting treatment on the surface of the 304 stainless steel substrate by adopting a sand blaster, and blowing out residual sand on the surface of the 304 stainless steel substrate by adopting compressed air; the roughness of the surface of the stainless steel matrix after sand blasting treatment is measured by a roughometer, and the measured roughness is 7 mu m; respectively and sequentially ultrasonically cleaning the surface of the substrate after sand blasting by using deionized water and absolute ethyl alcohol for 3min, and drying the absolute ethyl alcohol by hot air to obtain the surface of the clean stainless steel substrate after sand blasting and polishing;
(2) Firstly, adding 0.5g of nano silicon dioxide particles into 50mL of absolute ethyl alcohol, and stirring for 3min to obtain ethanol dispersion liquid of nano silicon dioxide; then adding 1.0g of nano zinc oxide particles into the ethanol dispersion liquid of the nano silicon dioxide, and continuously stirring for 3min to obtain a nano particle dispersion liquid; adding 0.5g of stearic acid into the nanoparticle dispersion liquid, stirring for 15min, finally adding 0.1g of organosilicon elastomer curing agent, and stirring for 20min to obtain suspension liquid;
(3) Spraying the suspension obtained in the step (2) on the surface of the stainless steel substrate subjected to sand blasting, polishing and cleaning in the step (1) by using a spray gun in one step, wherein the spray gun is vertical to the stainless steel substrate, the spraying distance is 60cm, the spraying air pressure is 0.2MPa, the spraying times are 2 times, the spraying time is 2s each time, after the spraying is finished, the 304 stainless steel substrate sprayed with the suspension is placed into a drying box, and the drying is performed at 80 ℃ to form a super-hydrophobic film on the surface of the 304 stainless steel substrate.
The stainless steel substrate surface super-hydrophobic film prepared in example 2 is tested for static water contact angle and rolling angle, the static water contact angle test result is shown in fig. 3, and the average static water contact angle of the super-hydrophobic film is 160 degrees, the rolling angle is 2 degrees, and excellent super-hydrophobic performance is shown.
The microscopic morphology of the super-hydrophobic film on the surface of the stainless steel substrate prepared in the embodiment 2 is tested, the result of a field emission scanning electron microscope is shown in fig. 4, the thickness of the film is 0.15mm, the surface of the film is of a typical villus structure, nano silicon dioxide particles and nano zinc oxide particles are uniformly dispersed in the film, the condition of overlap joint among the particles is good, and a fine and closely arranged micro-nano structure is formed with the surface of the stainless steel after sand blasting.
The roughness of the super-hydrophobic film on the surface of the stainless steel substrate prepared in example 2 is tested, and the roughness of the super-hydrophobic film is 1.71 μm, which indicates that the micro-nano level roughness structure formed by the preparation method of the super-hydrophobic film on the surface of the stainless steel substrate in this example is large, so that the contact angle of water drops on the surface of the stainless steel substrate can be greatly improved, the sliding angle is reduced, and the super-hydrophobic performance is improved.
Comparative example 1
Comparative example 1 the amount of stearic acid was replaced by "0.5g" to "2g" based on example 1 alone, with the other conditions unchanged.
The static water contact angle results of the film obtained in comparative example 1 are shown in fig. 5, and the average static water contact angle of the film is 142 ° or less than 150 °, which indicates that the film loses the superhydrophobic effect, and indicates that the mass ratio between stearic acid and nanoparticles is critical, stearic acid is used as a low-surface-energy active agent, and the effect is better as the more stearic acid is not added, because stearic acid is widely grafted on the surfaces of the stainless steel substrate and the micro-nano structure, and part of the micro-nano structure is covered, thereby causing the hydrophobicity to be reduced.
Comparative example 2
Comparative example 2 was based on example 1 alone, except that step (1) was omitted, and the other conditions were unchanged.
The water contact angle result of the film obtained in the comparative example 2 is shown in fig. 6, the average static water contact angle of the film is 134 degrees and less than 150 degrees, the film loses the superhydrophobic effect, which indicates that the film is critical to the sand blasting treatment of the stainless steel substrate, the step of sand blasting the stainless steel substrate is omitted, the surface of the film has only a nano structure, the nano structure is not provided, the nano structure is fragile, the film and the substrate are combined in a weak way, and the hydrophobic property is easy to lose effect; in addition, without the microstructure, the microstructure of the film surface cannot form a closely arranged micro-nano structure, and the water contact angle is reduced, so that the superhydrophobic effect is lost.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (8)
1. A stainless steel matrix surface super-hydrophobic film is characterized in that: the raw material components of the super-hydrophobic film consist of nano silicon dioxide particles, nano zinc oxide particles, stearic acid, a curing agent and solvent ethanol;
wherein the particle size of the nano silicon dioxide particles is 45-55 nm; the particle size of the nano zinc oxide particles is 15-25 nm;
the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1 (1-2) 1;
the mass ratio of the sum of the mass of the nano silicon dioxide particles and the mass of the nano zinc oxide particles to the mass of the curing agent is (10-15): 1, a step of;
the ratio of the total mass (g) of the nano silicon dioxide particles and the nano zinc oxide particles to the volume (mL) of the ethanol is (1-1.5): 50.
2. the stainless steel substrate surface superhydrophobic film according to claim 1, wherein: the mass ratio of the nano silicon dioxide particles to the nano zinc oxide particles to the stearic acid is 1:2:1.
3. a method for preparing the super-hydrophobic film on the surface of a stainless steel substrate according to claim 1 or 2, which is characterized in that: the method comprises the following steps:
(1) Sand blasting and polishing the surface of the stainless steel matrix until the roughness is 3-7 mu m;
(2) Firstly, adding nano silicon dioxide particles into absolute ethyl alcohol, and stirring until the nano silicon dioxide particles are uniformly dispersed; then adding nano zinc oxide particles, and continuing stirring until the nano zinc oxide particles are uniformly dispersed; adding stearic acid, stirring for 10-15 min, adding a curing agent, and stirring for 15-20 min to obtain a suspension;
(3) Spraying the suspension onto the surface of the stainless steel substrate cleaned by sand blasting and polishing by adopting an air spraying method, and drying to form a super-hydrophobic film on the surface of the stainless steel substrate;
the technological parameters of the air spraying are as follows: the spraying distance is 40 cm-60 cm, the spraying air pressure is 0.2 MPa-0.4 MPa, the spraying times are 1-2 times, and the spraying time is 2 s-3 s each time.
4. The method for preparing the super-hydrophobic film on the surface of the stainless steel substrate according to claim 3, which is characterized in that: the stainless steel substrate is a 304 stainless steel plate.
5. The method for preparing the super-hydrophobic film on the surface of the stainless steel substrate according to claim 3 or 4, which is characterized in that: in the step (1), firstly cleaning a stainless steel substrate by using clear water, then performing sand blasting treatment on the surface of the stainless steel substrate by using a sand blaster, blowing out residual sand on the surface of the stainless steel substrate by using compressed air, respectively ultrasonically cleaning a workpiece subjected to sand blasting by using deionized water and absolute ethyl alcohol for 3-5 min, and drying the absolute ethyl alcohol by using hot air to obtain the surface of the stainless steel substrate cleaned after sand blasting and polishing.
6. The method for preparing the super-hydrophobic film on the surface of the stainless steel substrate according to claim 3 or 4, which is characterized in that: in the step (1), the surface of the stainless steel substrate is subjected to sand blasting and polishing until the roughness is 5-7 mu m.
7. The method for preparing the super-hydrophobic film on the surface of the stainless steel substrate according to claim 3, which is characterized in that: in the step (3), the technological parameters of the air spraying are as follows: the spraying distance is 50 cm-60 cm, and the spraying air pressure is 0.2 MPa-0.3 MPa.
8. The method for preparing the super-hydrophobic film on the surface of the stainless steel substrate according to claim 4, which is characterized in that: in the step (1), firstly cleaning a stainless steel substrate by using clear water, then performing sand blasting treatment on the surface of the stainless steel substrate by using a sand blaster, blowing out residual sand on the surface of the stainless steel substrate by using compressed air, respectively ultrasonically cleaning a workpiece subjected to sand blasting by using deionized water and absolute ethyl alcohol for 3-5 min, and drying the absolute ethyl alcohol by using hot air to obtain the surface of the stainless steel substrate cleaned after sand blasting and polishing; in the step (1), sand blasting and polishing are carried out on the surface of the stainless steel matrix until the roughness is 5-7 mu m; in the step (3), the technological parameters of the air spraying are as follows: the spraying distance is 50 cm-60 cm, and the spraying air pressure is 0.2 MPa-0.3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310851410.6A CN116875091A (en) | 2023-07-12 | 2023-07-12 | Stainless steel matrix surface super-hydrophobic film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310851410.6A CN116875091A (en) | 2023-07-12 | 2023-07-12 | Stainless steel matrix surface super-hydrophobic film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116875091A true CN116875091A (en) | 2023-10-13 |
Family
ID=88256284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310851410.6A Pending CN116875091A (en) | 2023-07-12 | 2023-07-12 | Stainless steel matrix surface super-hydrophobic film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116875091A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009094106A1 (en) * | 2008-01-22 | 2009-07-30 | Dow Global Technologies Inc. | Hydrophobic coatings |
| CN103191855A (en) * | 2013-04-18 | 2013-07-10 | 天津大学 | Super-hydrophobic composite porous film and preparation method thereof |
| CN106398334A (en) * | 2016-09-09 | 2017-02-15 | 东南大学 | Super-wear-resisting super-hydrophobic coating and preparation method thereof |
| CN107987675A (en) * | 2017-12-15 | 2018-05-04 | 杭州纳微生物化学有限公司 | A kind of wear-resisting super hydrophobic coating composition and its preparation method and application |
| CN110511668A (en) * | 2019-07-09 | 2019-11-29 | 广东工业大学 | A kind of resin tooth super-hydrophobic coat and its manufacturing method, non-corrosive metal (NCM) part |
| CN113429867A (en) * | 2021-06-23 | 2021-09-24 | 南方科技大学 | Micro-nano composite super-hydrophobic wear-resistant coating and preparation method thereof |
| CN114752275A (en) * | 2022-03-07 | 2022-07-15 | 吉林大学 | Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates |
-
2023
- 2023-07-12 CN CN202310851410.6A patent/CN116875091A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009094106A1 (en) * | 2008-01-22 | 2009-07-30 | Dow Global Technologies Inc. | Hydrophobic coatings |
| CN103191855A (en) * | 2013-04-18 | 2013-07-10 | 天津大学 | Super-hydrophobic composite porous film and preparation method thereof |
| CN106398334A (en) * | 2016-09-09 | 2017-02-15 | 东南大学 | Super-wear-resisting super-hydrophobic coating and preparation method thereof |
| CN107987675A (en) * | 2017-12-15 | 2018-05-04 | 杭州纳微生物化学有限公司 | A kind of wear-resisting super hydrophobic coating composition and its preparation method and application |
| CN110511668A (en) * | 2019-07-09 | 2019-11-29 | 广东工业大学 | A kind of resin tooth super-hydrophobic coat and its manufacturing method, non-corrosive metal (NCM) part |
| CN113429867A (en) * | 2021-06-23 | 2021-09-24 | 南方科技大学 | Micro-nano composite super-hydrophobic wear-resistant coating and preparation method thereof |
| CN114752275A (en) * | 2022-03-07 | 2022-07-15 | 吉林大学 | Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates |
Non-Patent Citations (1)
| Title |
|---|
| 舒忠虎等: "基于磁控溅射-氟化改性的新型ZnO/SiO2复合超疏水涂层防冰性能研究", 表面技术, vol. 51, no. 08, 31 August 2022 (2022-08-31), pages 453 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sun et al. | A scalable, self-healing and hot liquid repelling superamphiphobic spray coating with remarkable mechanochemical robustness for real-life applications | |
| Zhuang et al. | Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition | |
| CN113976409A (en) | Preparation method of self-healing super-hydrophobic magnesium alloy anticorrosive coating | |
| CN110133763B (en) | Metal-based broadband antireflection self-cleaning bionic composite film and preparation and application thereof | |
| CN113652125A (en) | Micro-nano structure repair type super-hydrophobic coating and preparation method thereof | |
| Sun et al. | Study on selective laser melting 316L stainless steel parts with superhydrophobic surface | |
| CN106423789B (en) | A kind of durability anti-ice super-hydrophobic coat and preparation method thereof | |
| CN108624925B (en) | Composite preparation method of magnesium alloy surface super-hydrophobic structure | |
| CN113372803A (en) | Anticorrosive anti-icing self-cleaning super-hydrophobic coating and preparation method and application thereof | |
| CN109943163A (en) | A kind of method that PTFE micro-nano granules method quickly prepares super-hydrophobic automatic cleaning surfacing | |
| CN113444409A (en) | Titanium alloy surface PTFE-SiO2Preparation method of super-hydrophobic coating | |
| CN114082624A (en) | Durable super-hydrophobic candle soot coating and preparation method thereof | |
| Liao et al. | Fabrication of superamphiphobic surface on Cu substrate via a novel and facile dip coating method | |
| CN115057629A (en) | Glass with surface easy-to-clean function and preparation method thereof | |
| CN110694875A (en) | Method for obtaining super-hydrophobic surface of stepped layered structure | |
| CN114713479A (en) | Liquid material spraying improvement EP + PDMS/SiO through laser curing2Method for durability of super-hydrophobic coating | |
| CN107858624A (en) | A kind of anti-corrosion Friction-Reducing Coating of carbon fiber-containing and preparation method thereof | |
| CN116875091A (en) | Stainless steel matrix surface super-hydrophobic film and preparation method thereof | |
| CN109136822B (en) | Preparation method of seawater corrosion and abrasion resistant composite coating | |
| CN116179068A (en) | Anti-friction polyurethane super-hydrophobic coating prepared based on organic/inorganic particle composite, coating, method and application | |
| Ge et al. | Durability and corrosion behaviors of superhydrophobic amorphous coatings: a contrastive investigation | |
| CN115625098A (en) | Preparation method of self-cleaning super-hydrophobic surface | |
| CN114602775A (en) | Durable anti-frosting super-hydrophobic coating and preparation method thereof | |
| Zhao et al. | Study of Self-Cleaning and Anticorrosion Superhydrophobic Coating on Cement Mortar Using Milled Coral Waste Powder | |
| Ahmad et al. | Effect of sandblasting, annealing and hydrophobic treatment on the nano-mechanical and corrosion behaviour of n-TiO 2-coated 316L stainless steel |
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 |