CN114752275A - Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates - Google Patents
Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates Download PDFInfo
- Publication number
- CN114752275A CN114752275A CN202210214861.4A CN202210214861A CN114752275A CN 114752275 A CN114752275 A CN 114752275A CN 202210214861 A CN202210214861 A CN 202210214861A CN 114752275 A CN114752275 A CN 114752275A
- Authority
- CN
- China
- Prior art keywords
- coating
- sprayed
- super
- hydrophobic coating
- preparation
- 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
- 238000000576 coating method Methods 0.000 title claims abstract description 88
- 239000011248 coating agent Substances 0.000 title claims abstract description 86
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 60
- 239000000758 substrate Substances 0.000 title claims abstract description 52
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000011787 zinc oxide Substances 0.000 claims abstract description 35
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000725 suspension Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 17
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract description 17
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims abstract description 17
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 17
- 239000010935 stainless steel Substances 0.000 claims abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 229920002799 BoPET Polymers 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims abstract description 13
- 239000000123 paper Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000003822 epoxy resin Substances 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 43
- 239000002245 particle Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 8
- 240000002853 Nelumbo nucifera Species 0.000 claims description 7
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 7
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 6
- 241001465754 Metazoa Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 241001489698 Gerridae Species 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 230000003373 anti-fouling effect Effects 0.000 abstract description 15
- 238000004140 cleaning Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000007788 liquid Substances 0.000 description 13
- 235000016795 Cola Nutrition 0.000 description 5
- 235000011824 Cola pachycarpa Nutrition 0.000 description 5
- 241000209094 Oryza Species 0.000 description 5
- 235000016213 coffee Nutrition 0.000 description 5
- 235000013353 coffee beverage Nutrition 0.000 description 5
- 235000013336 milk Nutrition 0.000 description 5
- 239000008267 milk Substances 0.000 description 5
- 210000004080 milk Anatomy 0.000 description 5
- 244000241796 Christia obcordata Species 0.000 description 4
- 235000015203 fruit juice Nutrition 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 241000931705 Cicada Species 0.000 description 2
- 230000003592 biomimetic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical group [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D7/66—Additives characterised by particle size
- C09D7/68—Particle size between 100-1000 nm
-
- 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
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a preparation method of a bionic super-hydrophobic coating capable of being sprayed on various substrates. The method comprises the steps of firstly, dissolving epoxy resin in ethyl acetate; and then adding micron KH550-ZnO, nano KH550-ZnO, PDMS, epoxy resin curing agent and PDMS curing agent into the solution to prepare a coating suspension, and spraying the coating on the surfaces of glass, PET films, paper, cloth and stainless steel by adopting a spraying mode, thereby preparing the bionic super-hydrophobic coating with the low surface energy micro-nano scale double-layer hierarchical structure, and enabling the surfaces of all substrates to have typical biological super-hydrophobicity and self-cleaning antifouling performance. Compared with the conventional coating, the prepared bionic super-hydrophobic coating has obvious progress.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a preparation method of a bionic super-hydrophobic coating capable of being sprayed on various substrates.
Background
A large number of biological surfaces in the nature form natural and reasonable super-hydrophobic structures through natural selection and evolution for hundreds of millions of years. Can be widely observed in nature, such as lotus leaves, butterfly wings, cicada wings, shark skin surface and the like. The micro-nano scale double-layer hierarchical structure and the low surface energy of the biological surfaces endow the biological surfaces with excellent super-hydrophobicity and self-cleaning antifouling performance. Often the surfaces become contaminated with particles or dust when the material is exposed to an outdoor environment. Therefore, the preparation of the bionic super-hydrophobic antifouling surface with the micro-nano scale double-layer hierarchical structure is very necessary.
At present, a plurality of methods for preparing the super-hydrophobic surface are available, such as an electrochemical deposition method, a sol-gel method, a spinning method, a layer-by-layer self-assembly method, a template method, a laser etching method and the like. However, the method for preparing the superhydrophobic surface often has the problems of complex process, low applicability and difficulty in being widely applied to production practice. Therefore, a method which is simple in process, high in applicability and suitable for large-scale preparation of the super-hydrophobic coating needs to be explored to meet the actual needs.
Disclosure of Invention
The invention aims to provide a preparation method of a bionic super-hydrophobic coating which can be sprayed on various base materials, and aims to solve the problems that the super-hydrophobic coating suitable for glass, PET films, paper, cloth and stainless steel base materials is prepared on various base materials through a simple spraying method, and the hydrophobic property and the self-cleaning antifouling property of the surfaces of various base materials are improved. The method can improve the hydrophobicity and the self-cleaning antifouling property of the surfaces of various substrates, opens up a simple and convenient way for constructing the bionic super-hydrophobic coating with the self-cleaning antifouling property, and has important significance for the development of the coating technology.
The purpose of the invention is realized by the following technical scheme:
a bionic super-hydrophobic coating which can be sprayed on various substrates is prepared by preparing a bionic super-hydrophobic coating with a micro-nano scale double-layer hierarchical structure on the surfaces of glass, PET films, paper, cloth and stainless steel by adopting a spraying method, wherein the formed bionic super-hydrophobic surface is a characteristic imitating the characteristic of a typical biological super-hydrophobic surface, such as the characteristic of a super-hydrophobic microstructure of animals and plants such as lotus leaves, butterfly wings, rice, water stridors and the like, so that the substrates have super-hydrophobicity, self-cleaning and antifouling functions. The method specifically comprises the following steps:
A. dissolving epoxy resin in ethyl acetate, and magnetically stirring for 5 min;
B. adding micron KH550-ZnO and nano KH550-ZnO into the solution prepared in the step A, and performing ultrasonic dispersion for 10 min;
C. firstly adding PDMS into the suspension, then adding EP and PDMS curing agent into the suspension according to a certain proportion, and magnetically stirring the mixed suspension for 30 min;
D. placing the obtained coating suspension into a spray gun, and spraying the coating suspension on the surface of each substrate to form a bionic super-hydrophobic coating with a micro-nano scale double-layer hierarchical structure;
E. and heating and curing the sprayed bionic super-hydrophobic sample at 80 ℃ for 1h to prepare the bionic super-hydrophobic coating with the typical biological super-hydrophobicity micro-nano scale double-layer hierarchical structure.
Further, in step A, 3g of epoxy resin and 12ml of ethyl acetate were added to the coating suspension.
Further, in the step B, the adding amount of the nano KH550-ZnO in the coating is 2.5 g; the KH550-ZnO particle size is 100 nm.
Further, in the step B, the addition amount of the micron KH550-ZnO in the coating is 1 g; the KH550-ZnO particle size is 10 μm.
Further, in step C, the content of PDMS added in the coating is 2 g.
Further, in the step C, EP and PDMS curing agents are added into the coating respectively in the mass ratio of 10:3 to 10: 1.
And step D, spraying the coating from left to right and from top to bottom, controlling the air pressure of an air compressor to be less than 1bar, controlling the angle of the spray gun to be 45, and controlling the distance between the spray gun and the substrate to be 15-25 cm.
And D, respectively using glass, PET (polyethylene terephthalate) film, paper, cloth and stainless steel as the base materials.
And D, in the micro-nano scale double-layer hierarchical structure, a first layer of micron zinc oxide is stacked to form a micron particle structure, and a second layer of the micron zinc oxide double-layer hierarchical structure is nano zinc oxide particles wrapped by an outer layer of the micron zinc oxide.
Further, in step E, the typical biological super-hydrophobic micro-nano scale double-layer hierarchical structure comprises a micro-nano scale double-layer hierarchical structure on the surfaces of animals and plants such as lotus leaf, rice leaf and water strider leg.
Compared with the prior art, the invention has the beneficial effects that:
the invention imitates the super-hydrophobic microstructure characteristics of animals and plants such as lotus leaves, butterfly wings, rice, cicada wings, water striders and the like, adopts a simple spraying method to prepare a bionic super-hydrophobic coating with a micro-nano scale double-layer hierarchical structure on the surfaces of glass, PET films, paper, cloth and stainless steel, and the contact angle of the coating is more than 150 degrees, so that the super-hydrophobic state is achieved, the substrate has super-hydrophobic property, self-cleaning antifouling function and wider application; the prepared bionic super-hydrophobic coating can be well combined with a matrix, and the self-cleaning antifouling performance of the surface is realized under the working condition of use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is an SEM image of a stainless steel surface sprayed coating, wherein panel a is an SEM image of a stainless steel surface sprayed coating at 2000 times magnification; FIG. b is an SEM image of a stainless steel surface sprayed coating at 5000 times magnification;
FIG. 2a is a schematic diagram of the contact angle of the sprayed coating on the glass substrate to water and the liquid repellency to various common liquids (water, coffee, fruit juice, milk, cola, and sprite);
FIG. 2b is a schematic representation of the contact angle of a sprayed coating on a PET film substrate, the liquid repellency of various common liquids (water, coffee, fruit juice, milk, cola, and sprite) and the contact angle of the sprayed coating on the PET film substrate;
FIG. 2c is a schematic representation of the spray coating on a paper substrate showing contact angle to water and liquid repellency to various common liquids (water, coffee, juice, milk, cola, sprite);
FIG. 2d is a schematic representation of the contact angle of the spray coating on a cloth substrate with respect to water, and the liquid repellency of various common liquids (water, coffee, juice, milk, cola, and sprite);
fig. 2e is a schematic representation of the contact angle of the spray coating on a stainless steel substrate, the water repellency of the spray coating on a stainless steel substrate, and the liquid repellency of various common liquids (water, coffee, fruit juice, milk, cola, and sprite).
FIG. 3a is a schematic diagram of a self-cleaning and anti-fouling process of quartz sand by a coating sprayed on the surface of glass;
fig. 3b is a schematic view of the self-cleaning antifouling process of the coating sprayed on the glass surface to soil.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The invention relates to a preparation method of a bionic super-hydrophobic coating which can be sprayed on various substrates, which is characterized in that natural biological materials are used as a design model, the characteristics of animal and plant super-hydrophobic microstructures such as lotus leaves, butterfly wings, rice, water striders and the like are simulated, and a spraying method is adopted to prepare the bionic super-hydrophobic coating with a micro-nano scale double-layer hierarchical structure on the surfaces of glass, PET films, paper, cloth and stainless steel, so that the super-hydrophobicity and the self-cleaning antifouling function of the surfaces of various substrates are improved.
The invention relates to a method for designing a super-hydrophobic bionic surface by using glass, a PET film, paper, cloth and a stainless steel substrate, and a method for preparing the bionic super-hydrophobic surface on various substrates, which comprises the following steps:
1. dissolving epoxy resin in ethyl acetate, and magnetically stirring for 5 min;
2. adding KH550-ZnO (micrometer) and KH550-ZnO (nanometer) into the solution, and ultrasonically dispersing for 10 min;
3. firstly adding PDMS into the suspension, then adding EP and PDMS curing agent into the suspension according to a certain proportion, and magnetically stirring the mixed suspension for 30 min;
4. the obtained coating suspension liquid is placed in a spray gun and sprayed on the surface of each substrate;
5. and heating and curing the sprayed bionic super-hydrophobic sample at 80 ℃ for 1 h.
Due to the bionic micro-nano scale double-layer hierarchical structure and low surface energy of the surface of the sprayed coating, the surface of the coating has typical biological super-hydrophobicity.
The coating suspension was added with 3g of epoxy resin and 12ml of ethyl acetate.
The addition amount of KH550-ZnO (nanometer) in the coating is 2.5 g. The KH550-ZnO particle size is 100 nm.
The addition amount of KH550-ZnO (micron) in the coating is 1 g. The KH550-ZnO particle size is 10 μm.
The content of PDMS added in the coating is 2g, and the function of PDMS is to reduce the surface energy of the coating.
EP and PDMS curing agents are added into the coating respectively according to the mass ratio of 10:3 to 10: 1.
The method of the spraying process is to spray the coating from left to right and from top to bottom. The air pressure of the air compressor is controlled below 1bar, and the angle of the spray gun is 45 degrees. The distance between the spray gun and the substrate is 15-25 cm.
Forming a micro-nano scale double-layer hierarchical structure:
the first layer of micron zinc oxide is stacked to form a micron particle structure, and the second layer of micron zinc oxide is nano zinc oxide particles wrapped by the outer layer of micron zinc oxide, so that a micron-nano double-layer hierarchical structure is formed on a glass, PET film, paper, cloth and stainless steel substrate.
The typical biological super-hydrophobic surface characteristics comprise a micro-nano scale double-layer hierarchical structure on the surfaces of animals and plants such as lotus leaves, rice leaves and water striders.
Example 1
A preparation method of a bionic super-hydrophobic coating which can be sprayed on various substrates (glass, PET film, paper, cloth and stainless steel) comprises the following steps:
1. revealing the microstructure and distribution characteristic rule of a typical biological hydrophobic surface 2, spraying a coating: adding 3g of epoxy resin into 12ml of ethyl acetate, and magnetically stirring for 5 min; adding nano KH550-ZnO (2.5g) and micro KH550-ZnO (1g) into the suspension, and ultrasonically dispersing for 10 min; adding EP and PDMS curing agents with the PDMS content of 2g and the mass ratio of 10:3 and 10:1 respectively into the suspension, and magnetically stirring for 30 min; the obtained suspension is sprayed with a coating from left to right and from top to bottom; the air pressure of the air compressor is controlled to be below 1bar, and the angle of the spray gun is 45 degrees; the distance between the spray gun and the substrate is 15-25 cm. Micron-sized particle structures formed by stacking micron zinc oxide and nano zinc oxide particles wrapped by the outer layers of the micron zinc oxide form micro-nano-sized double-layer hierarchical structures on various matrixes.
3. Heating and curing: the prepared super-hydrophobic coating is heated for 1h at 80 ℃, so that the surface of each substrate with a micro-nano double-layer hierarchical structure has typical biological super-hydrophobicity and self-cleaning antifouling performance.
As shown in fig. 2, the biomimetic superhydrophobic coatings sprayed on various substrates retained excellent superhydrophobic and liquid repellent properties for various common liquids. As shown in fig. 2a, a bionic super-hydrophobic coating is sprayed on a glass substrate, and the water contact angle of the sprayed coating on the glass substrate is 157.5 degrees; as shown in fig. 2b, the bionic super-hydrophobic coating is sprayed on the PET film substrate, and the water contact angle of the sprayed coating on the PET film substrate is 154.8 °; as shown in fig. 2c, a bionic super-hydrophobic coating is sprayed on the paper substrate, and the water contact angle of the sprayed coating on the paper substrate is 151.8 degrees; as shown in fig. 2d, the bionic super-hydrophobic coating is sprayed on the cloth substrate, and the water contact angle of the sprayed coating on the cloth substrate is 155.6 degrees; as shown in fig. 2e, the biomimetic super-hydrophobic coating is sprayed on the stainless steel substrate, and the water contact angle of the sprayed coating on the stainless steel substrate is 162.4 °. FIG. 3 shows the self-cleaning antifouling property of the bionic super-hydrophobic coating sprayed on the glass substrate, and it can be seen that when water drops slide off the coating, gravel and soil can be rapidly cleaned, indicating that the prepared bionic super-hydrophobic coating has excellent self-cleaning antifouling property.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A preparation method of a bionic super-hydrophobic coating which can be sprayed on various substrates is characterized by comprising the following steps: the method comprises the following steps:
A. dissolving epoxy resin in ethyl acetate, and magnetically stirring for 5 min;
B. adding micron KH550-ZnO and nano KH550-ZnO into the solution prepared in the step A, and performing ultrasonic dispersion for 10 min;
C. firstly adding PDMS into the suspension, then adding EP and PDMS curing agent into the suspension according to a certain proportion, and magnetically stirring the mixed suspension for 30 min;
D. placing the obtained coating suspension into a spray gun, and spraying the coating suspension on the surface of each substrate to form a bionic super-hydrophobic coating with a micro-nano scale double-layer hierarchical structure;
E. and heating and curing the sprayed bionic super-hydrophobic sample at 80 ℃ for 1h to prepare the bionic super-hydrophobic coating with the typical biological super-hydrophobicity micro-nano scale double-layer hierarchical structure.
2. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: step A, 3g of epoxy resin and 12ml of ethyl acetate were added to the coating suspension.
3. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: step B, the adding amount of the nano KH550-ZnO in the coating is 2.5 g; the KH550-ZnO particle size is 100 nm.
4. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: step B, adding 1g of micron KH550-ZnO in the coating; the KH550-ZnO particle size is 10 μm.
5. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: and step C, adding 2g of PDMS into the coating.
6. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: and step C, adding EP and PDMS curing agents into the coating according to the mass ratio of 10:3 and 10:1 respectively.
7. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: and D, spraying the coating from left to right and from top to bottom, controlling the air pressure of an air compressor to be less than 1bar, controlling the angle of a spray gun to be 45, and controlling the distance between the spray gun and the substrate to be 15-25 cm.
8. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: and D, respectively using glass, a PET film, paper, cloth and stainless steel as the base materials.
9. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: and D, in the micro-nano scale double-layer hierarchical structure, a first layer of micro-zinc oxide is stacked to form a micro-scale particle structure, and a second layer of the micro-nano scale double-layer hierarchical structure is nano-zinc oxide particles wrapped by an outer layer of the micro-zinc oxide.
10. The preparation method of the bionic super-hydrophobic coating capable of being sprayed on various substrates according to claim 1, is characterized in that: and E, the typical biological super-hydrophobic micro-nano scale double-layer hierarchical structure comprises a micro-nano scale double-layer hierarchical structure on the surfaces of animals and plants such as lotus leaves, rice leaves and water striders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214861.4A CN114752275A (en) | 2022-03-07 | 2022-03-07 | Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214861.4A CN114752275A (en) | 2022-03-07 | 2022-03-07 | Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114752275A true CN114752275A (en) | 2022-07-15 |
Family
ID=82325314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210214861.4A Pending CN114752275A (en) | 2022-03-07 | 2022-03-07 | Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114752275A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340808A (en) * | 2022-08-18 | 2022-11-15 | 西咸新区壹德工程有限公司 | Preparation method of durable super-hydrophobic anticorrosive coating |
| CN115445895A (en) * | 2022-09-22 | 2022-12-09 | 上海大学 | Super-hydrophobic material based on bionic micro-nano structure and preparation method and application thereof |
| CN115651534A (en) * | 2022-11-14 | 2023-01-31 | 云南大学 | Super-hydrophobic coating, self-cleaning coating, and preparation method and application thereof |
| CN115787306A (en) * | 2022-11-29 | 2023-03-14 | 西安交通大学 | Preparation method of high-robustness super-hydrophobic anti-icing fabric |
| CN116640508A (en) * | 2023-05-08 | 2023-08-25 | 泰州市创新电子有限公司 | Construction graphene bionic super-hydrophobic coating and manufacturing process thereof |
| CN116875091A (en) * | 2023-07-12 | 2023-10-13 | 东方绿色能源(河北)有限公司华中分公司 | Stainless steel matrix surface super-hydrophobic film and preparation method thereof |
| CN117483212A (en) * | 2024-01-02 | 2024-02-02 | 中国科学院海洋研究所 | Preparation method of micro-nano composite high-stability super-amphiphobic metal anti-corrosion material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419450A (en) * | 2015-11-30 | 2016-03-23 | 东南大学 | Highly-wear-resistant super-hydrophobic composite coating and preparation method thereof |
| CN106883650A (en) * | 2017-04-21 | 2017-06-23 | 黑龙江凯恩琪新材料科技有限公司 | It is a kind of can the lasting super-hydrophobic coat of freezing preparation method |
| 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 |
| CN113201239A (en) * | 2021-04-30 | 2021-08-03 | 江苏理工学院 | Preparation method of biological adhesion-resistant super-hydrophobic suspension |
| CN113980576A (en) * | 2021-12-02 | 2022-01-28 | 大连理工大学 | Preparation method of anti-icing durable super-hydrophobic coating |
-
2022
- 2022-03-07 CN CN202210214861.4A patent/CN114752275A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419450A (en) * | 2015-11-30 | 2016-03-23 | 东南大学 | Highly-wear-resistant super-hydrophobic composite coating and preparation method thereof |
| CN106883650A (en) * | 2017-04-21 | 2017-06-23 | 黑龙江凯恩琪新材料科技有限公司 | It is a kind of can the lasting super-hydrophobic coat of freezing preparation method |
| 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 |
| CN113201239A (en) * | 2021-04-30 | 2021-08-03 | 江苏理工学院 | Preparation method of biological adhesion-resistant super-hydrophobic suspension |
| CN113980576A (en) * | 2021-12-02 | 2022-01-28 | 大连理工大学 | Preparation method of anti-icing durable super-hydrophobic coating |
Non-Patent Citations (2)
| Title |
|---|
| 张立德: "《超微粉体制备与应用技术》", 30 April 2001, 中国石化出版社 * |
| 杨洪兴 等, 中国铁道出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340808A (en) * | 2022-08-18 | 2022-11-15 | 西咸新区壹德工程有限公司 | Preparation method of durable super-hydrophobic anticorrosive coating |
| CN115445895A (en) * | 2022-09-22 | 2022-12-09 | 上海大学 | Super-hydrophobic material based on bionic micro-nano structure and preparation method and application thereof |
| CN115651534A (en) * | 2022-11-14 | 2023-01-31 | 云南大学 | Super-hydrophobic coating, self-cleaning coating, and preparation method and application thereof |
| CN115787306A (en) * | 2022-11-29 | 2023-03-14 | 西安交通大学 | Preparation method of high-robustness super-hydrophobic anti-icing fabric |
| CN116640508A (en) * | 2023-05-08 | 2023-08-25 | 泰州市创新电子有限公司 | Construction graphene bionic super-hydrophobic coating and manufacturing process thereof |
| CN116875091A (en) * | 2023-07-12 | 2023-10-13 | 东方绿色能源(河北)有限公司华中分公司 | Stainless steel matrix surface super-hydrophobic film and preparation method thereof |
| CN117483212A (en) * | 2024-01-02 | 2024-02-02 | 中国科学院海洋研究所 | Preparation method of micro-nano composite high-stability super-amphiphobic metal anti-corrosion material |
| CN117483212B (en) * | 2024-01-02 | 2024-03-19 | 中国科学院海洋研究所 | Preparation method of micro-nano composite high-stability super-amphiphobic metal anti-corrosion material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114752275A (en) | Preparation method of bionic super-hydrophobic coating capable of being sprayed on various substrates | |
| Xu et al. | Chemical fabrication strategies for achieving bioinspired superhydrophobic surfaces with micro and nanostructures: A review | |
| Moghadam et al. | Multifunctional superhydrophobic surfaces | |
| CN106587075B (en) | The preparation method of super-hydrophobic silica particle and super-hydrophobic coat | |
| Yu et al. | Facile preparation of durable superhydrophobic coating with self-cleaning property | |
| Foorginezhad et al. | Fabrication of stable fluorine-free superhydrophobic fabrics for anti-adhesion and self-cleaning properties | |
| CN111299104B (en) | Super-hydrophobic composite coating and preparation method thereof | |
| Xiao et al. | Novel robust superhydrophobic coating with self-cleaning properties in air and oil based on rare earth metal oxide | |
| Zhang et al. | A facile method to fabricate superhydrophobic cotton fabrics | |
| US20220325108A1 (en) | Superhydrophobic Coating, Method for Preparing Same and Use Thereof | |
| CN109370418A (en) | A kind of super hydrophobic coating, coating and its preparation method and application | |
| CN110499073B (en) | Method for preparing super-hydrophobic coating by modifying nano-cellulose and nano-particles serving as raw materials in aqueous solution through fluorine-free modifier | |
| CN104910656B (en) | A kind of method that super-hydrophobic silica powder and super-hydrophobic coat are prepared with compound silicon source | |
| CN114773997A (en) | Preparation method of super-hydrophobic and oleophobic coating | |
| CN107868533A (en) | A kind of method of super hydrophobic coating and its making durability super-hydrophobic coat | |
| Liu et al. | Facile creation of bio-inspired superhydrophobic Ce-based metallic glass surfaces | |
| CN112409859B (en) | Preparation method of large-area super-hydrophobic coating with adjustable liquid adhesion | |
| Xu et al. | Superhydrophobic cotton fabrics prepared by one-step water-based sol–gel coating | |
| CN106633158A (en) | Preparation method of superhydrophobic coating with favorable binding force with polyolefins | |
| CN112175520A (en) | Preparation method and application of super-hydrophobic, transparent and durable coating | |
| Zhang et al. | Facile preparation of robust superamphiphobic coatings on complex substrates via nonsolvent-induced phase separation | |
| Yang et al. | Superhydrophobic coating derived from the spontaneous orientation of janus particles | |
| Zhao et al. | One-pot fabrication of fluoride-silica@ silica raspberry-like nanoparticles for superhydrophobic coating | |
| CN114749350B (en) | Preparation method of antibacterial super-hydrophobic bionic surface on stainless steel substrate | |
| Ren et al. | Biomass-based superhydrophobic coating with tunable colors and excellent robustness |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220715 |
|
| RJ01 | Rejection of invention patent application after publication |