CN110355075B - Super-amphiphobic impeller and preparation method and application thereof - Google Patents
Super-amphiphobic impeller and preparation method and application thereof Download PDFInfo
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- CN110355075B CN110355075B CN201810251529.9A CN201810251529A CN110355075B CN 110355075 B CN110355075 B CN 110355075B CN 201810251529 A CN201810251529 A CN 201810251529A CN 110355075 B CN110355075 B CN 110355075B
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- 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
- B05D3/10—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 other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- 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
-
- 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
- B05D7/24—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 for applying particular liquids or other fluent materials
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- 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
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
Abstract
The invention provides a super-amphiphobic impeller and a preparation method and application thereof, wherein the preparation method comprises the following steps: (1) etching the impeller in a weak alkali aqueous solution; (2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of fluoro alkoxy silane, and performing surface modification to obtain the super-amphiphobic impeller. The preparation method provided by the invention is simple and easy to implement, and the impeller obtained by the invention has excellent oleophobic and hydrophobic characteristics by combining alkali etching and surface modification by using the fluoro alkoxy silane.
Description
Technical Field
The invention belongs to the field of material modification, and relates to a super-amphiphobic impeller and a preparation method and application thereof.
Background
The kitchen ventilator, it is a kitchen electrical apparatus to purify the kitchen environment, it is installed above kitchen range or side, can exhaust the waste material that the kitchen range burns and the oil fume harmful to human body produced in the course of cooking rapidly, discharge to the outdoor, reduce the pollution, purify the air, and have the safety guarantee function of anti-virus explosion-proof, the inner wall of bellows and blade of the common kitchen ventilator generally are difficult to wash the place, the accumulated oil stain of day and month is accumulated on the impeller, influence deoiling, smooth and easy to exhaust; and the impeller is fully glued with greasy dirt oil water mixture, can aggravate the running load of motor, and the dirt that adheres on the blade is inhomogeneous, can cause motor operation rotation balance variation, will finally lead to the life-span of motor to reduce, and smoke exhaust effect is not good, and the noise is big problem moreover. And the severe oil stain not only influences the mood of a user, but also influences the use efficiency of the range hood, and daily oil dripping and leaking are harmful to the diet health of family members. But the oil stain of the range hood is time-consuming and labor-consuming to clean, and especially the internal impeller is difficult to clean; most of antifouling coatings applied in the field of household appliances are polytetrafluoroethylene and applied to cooking pots, but oil stains of the range hood are a mixture of high-temperature oil vapor and water vapor, and the effect of a common coating is poor.
At present, before the metal surface is generally subjected to hydrophobic and oleophobic modification by fluorination treatment, the metal surface is generally etched by using an acid solution, and in the preparation of a bionic super-amphiphobic surface of X52 pipeline steel, the surface modification of X52 pipeline steel by using the combination of sand blasting texturing, acid etching and fluorination treatment is reported to obtain a hydrophobic surface; however, when the metal reacts in an acidic environment, the reaction is severe, the shape and the microscopic scale are not easy to control, a concave structure with a larger size is easy to appear on the microscopic shape, the surface area of the microstructure is increased, and the subsequent surface modification time is too long. CN107779848A discloses a method for preparing a super-hydrophobic and oleophobic surface on the surface of a steel substrate through a displacement reaction, wherein the preparation method comprises the steps of firstly removing oil, primarily cleaning, then polishing into a micron-sized rough surface, further cleaning, and then utilizing CuSO 4 Leaving a micron-sized rough surface on the surface of the base material through the replacement reaction of Fe; then, the steel substrate sample is immersed in the ethanol solution of myristic acid, and a super-hydrophobic surface with a contact angle of more than 150 degrees can be obtained. CN107675151A discloses a super-amphiphobic modification method for a rough aluminum/aluminum alloy surface, wherein the super-amphiphobic surface can be obtained by quickly dipping and washing an aluminum or aluminum alloy surface with certain roughness in a fluorinated organic phosphonic acid solution, although the surface modification is quick, the method is only applied to aluminum products with certain roughness, and the application range is narrow.
The impeller blades of the range hood are the concentrated places where oil smoke is attached, the special structure of the impeller makes the antifouling treatment of the impeller complicated, and small gaps of the impeller are difficult to be considered, so that a method needs to be developed for carrying out oil stain prevention and waterproof treatment on the impeller.
Disclosure of Invention
The invention aims to provide a super-amphiphobic impeller and a preparation method and application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the invention provides a preparation method of a super-amphiphobic impeller, which comprises the following steps:
(1) etching the impeller in a weak alkali aqueous solution, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of fluoro alkoxy silane, and performing surface modification to obtain the super-amphiphobic impeller.
In the invention, the weak base solution is used for etching to replace the traditional acid solution etching, so that the defects of violent acid etching reaction and difficult control of microscopic morphology and scale are avoided, and the weak base solution is used for etching, so that the etching pit is shallow and the sectional area is small, thereby reducing the surface modification time in the subsequent process and reducing the consumption of the fluoro alkoxy silane. The impeller after the alkali etching is subjected to surface modification in an ethanol solution of the fluoro-alkoxy silane, and after the fluoro-alkoxy silane is hydrolyzed, the fluoro-alkoxy silane reacts with a metal substrate and simultaneously has reactions such as cross-linking, polycondensation and the like among molecules, so that the fluoro-alkoxy silane can form a macromolecular membrane with low surface energy on the metal surface, and the impeller has corresponding hydrophobic and oleophobic capabilities; the combination of weak base etching and surface modification by using fluoro alkoxy silane can greatly reduce the surface modification time and obtain the impeller with good hydrophobic and oleophobic capabilities.
Preferably, the weak base aqueous solution in step (1) is an ammonium hydroxide aqueous solution.
Preferably, the concentration of ammonium hydroxide in the aqueous ammonium hydroxide solution is 0.02 to 0.06mol/L, e.g., 0.03mol/L, 0.04mol/L, 0.05mol/L, and the like.
In the invention, the ammonium hydroxide is ammonia water, when the concentration of the ammonium hydroxide is 0.02-0.06mol/L, the etching effect on the impeller is the best, when the concentration is less than 0.02mol/L, the etching effect is insufficient, further the subsequent surface modification effect is poor, and when the concentration is higher than 0.06mol/L, although the influence on the etching effect is not great, the waste of alkali liquor can be caused, and when the concentration is higher, the smell of the ammonium hydroxide aqueous solution is larger, and certain influence on the environment and human body can be caused in the actual production process.
Preferably, the etching time in step (1) is 20-40 hours, such as 22 hours, 25 hours, 28 hours, 30 hours, 32 hours, 35 hours, 38 hours, etc.
Preferably, the temperature of the etching in step (1) is 50-70 deg.C, such as 52 deg.C, 55 deg.C, 58 deg.C, 60 deg.C, 62 deg.C, 65 deg.C, 68 deg.C, etc.
Preferably, the fluoroalkoxysilane of step (2) is heptadecafluorodecyltriethoxysilane.
In the present invention, first, Si- (OR) bonded to a fluoroalkyl chain is added to a prepared fluoroalkoxysilane solution 3 The base is hydrolyzed or alcoholyzed to form silanol, which can be represented by the following reaction formula:
the film forming process is followed, that is, the process of forming a macromolecular film on the metal surface. Because M-OH groups (M represents a metal matrix) exist at the impeller base, and Si-OH is a group with strong polarity, under certain conditions, the two groups can be subjected to condensation of Si-OH and M-OH groups to form a hydrogen bond or a covalent bond, so that the low-surface-energy organic film is formed on the surface of the impeller through adsorption assembly, and the reaction is as follows:
similarly, intermolecular crosslinking and polycondensation also exist among the fluoroalkoxysilane molecules, so that when the fluoroalkoxysilane molecules are attached to the surface of the impeller, the fluoroalkoxysilane molecules are crosslinked with each other, and a macromolecular membrane is formed on the surface of the impeller.
Preferably, the volume concentration of the heptadecafluorodecyltriethoxysilane in the ethanol solution is 1.20-1.50%, such as 1.25%, 1.3%, 1.35%, 1.4%, 1.45%, etc.
When the volume concentration of heptadecafluorodecyltriethoxysilane is less than 1.20%, the reaction rate and the final film-forming property may be lowered, and when the volume concentration is more than 1.50%, the hydrophobic and oleophobic properties may be lowered due to mutual hydrolysis between the formed molecular films.
Preferably, the surface modification time in step (2) is 30-60min, such as 35min, 40min, 45min, 50min, 55min, etc.
Preferably, step (2) further comprises surface modification followed by drying.
Preferably, the drying is performed at 60-100 deg.C (e.g., 65 deg.C, 70 deg.C, 75 deg.C, 80 deg.C, 85 deg.C, 90 deg.C, 95 deg.C, etc.) for 10-20min (e.g., 11min, 12min, 13min, 14min, 15min, 16min, 17min, 18min, 19min, etc.).
Preferably, the processing raw material of the impeller is a steel plate obtained by cold rolling carbon steel.
As the best and preferred technical scheme, the preparation method comprises the following steps:
(1) etching the impeller in 0.02-0.06mol/L ammonium hydroxide aqueous solution at 50-70 ℃ for 20-40 hours, and then washing and drying;
(2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.20-1.50% for 30-60 minutes for surface modification, and drying at 60-100 ℃ for 10-20 minutes to obtain the super-amphiphobic impeller.
In the best optimal scheme, the concentration, the etching temperature and the etching time of the ammonium hydroxide aqueous solution, the concentration of the heptadecafluorodecyltriethoxysilane and the surface modification time are controlled, so that the finally obtained impeller has excellent super-amphiphobic characteristics, the hydrophobic and oleophobic effects are also achieved at the fine gaps of the finally obtained impeller, and the phenomenon that oil stains are accumulated at the fine gaps of the impeller and are difficult to clean is avoided.
Fig. 1 is a flow chart of the preparation method provided by the present invention, and the flow chart includes a schematic view of a microstructure of an impeller subjected to surface modification.
In a second aspect, the present invention provides a super-amphiphobic impeller having heptadecafluorodecyltriethoxysilane grafted to the surface of the super-amphiphobic impeller.
Preferably, the super-amphiphobic impeller is prepared by the preparation method of the first aspect.
In a third aspect, the invention provides a range hood, and the range hood impeller is the super-amphiphobic impeller of the second aspect.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the invention, the traditional acid solution etching is replaced by the weak base aqueous solution etching, so that the defects of violent acid etching reaction and difficulty in controlling the microscopic morphology scale are avoided, and the control of the metal microscopic morphology by the base etching can shorten the later surface modification time and finish the surface modification in a shorter time;
(2) the impeller after alkali etching is subjected to surface modification in an ethanol solution of fluoro-alkoxy silane, and cross-linking and condensation polymerization also exist among molecules while the fluoro-alkoxy silane reacts with a metal substrate, so that the fluoro-alkoxy silane can form a macromolecular membrane with low surface energy on the metal surface, and the impeller has corresponding hydrophobic and oleophobic capabilities;
(3) the preparation method provided by the invention is simple and easy to implement, and the impeller obtained by the invention has excellent oleophobic and hydrophobic characteristics by combining alkali etching and surface modification by using fluoroalkoxysilane, wherein the contact angle to water can reach more than 145 degrees, and the contact angle to edible oil can reach more than 139 degrees.
Drawings
FIG. 1 is a flow chart of a preparation method provided for the present invention.
FIG. 2 is an SEM image of the impeller of example 1 after alkali etching.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
A super-amphiphobic impeller is prepared by the following steps:
(1) etching an impeller in 0.04mol/L ammonium hydroxide aqueous solution at 60 ℃ for 30 hours, and then washing and drying;
(2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.35% for 45 minutes, carrying out surface modification, and drying at 80 ℃ for 15 minutes to obtain the super-amphiphobic impeller.
And (4) performance testing:
observing the microstructure after the alkali etching in the step (1) by utilizing SEM characterization, and referring to a figure 1; as can be seen from the figure, after the etching by the weak base solution, the surface of the substrate material has a flower-like shape, the diameter of the particles of the shape is about 2-5 μm, the micro roughness of the surface of the impeller is greatly increased, a large space is provided for the later modification of the fluoroalkoxysilane, and good conditions are provided for film formation.
Example 2
A super-amphiphobic impeller is prepared by the following steps:
(1) etching an impeller in 0.02mol/L ammonium hydroxide aqueous solution at 50 ℃ for 40 hours, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.20% for 60 minutes, performing surface modification, and drying at 60 ℃ for 20 minutes to obtain the super-amphiphobic impeller.
Example 3
A super-amphiphobic impeller is prepared by the following steps:
(1) etching an impeller in 0.06mol/L ammonium hydroxide aqueous solution at 70 ℃ for 20 hours, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.50% for 30 minutes, performing surface modification, and drying at 100 ℃ for 10 minutes to obtain the super-amphiphobic impeller.
Example 4
A super-amphiphobic impeller is prepared by the following steps:
(1) etching an impeller in 0.03mol/L ammonium hydroxide aqueous solution at 55 ℃ for 35 hours, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.30% for 50 minutes, performing surface modification, and drying at 70 ℃ for 17 minutes to obtain the super-amphiphobic impeller.
Example 5
A super-amphiphobic impeller is prepared by the following steps:
(1) etching an impeller in 0.05mol/L ammonium hydroxide aqueous solution at 65 ℃ for 25 hours, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.40% for 40 minutes, performing surface modification, and drying at 90 ℃ for 12 minutes to obtain the super-amphiphobic impeller.
Example 6
A super-amphiphobic impeller is prepared by the following steps:
(1) etching the impeller in 0.02mol/L ammonium hydroxide aqueous solution at 58 ℃ for 40 hours, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of 1.25% of perfluorooctyl triethoxysilane by volume fraction for 55 minutes, performing surface modification, and drying at 65 ℃ for 19 minutes to obtain the super-amphiphobic impeller.
Example 7
A super-amphiphobic impeller is prepared by the following steps:
(1) etching an impeller in 0.04mol/L ammonium hydroxide aqueous solution at 50 ℃ for 10 hours, and then washing and drying;
(2) and (2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.0% for 60 minutes, performing surface modification, and drying at 95 ℃ for 11 minutes to obtain the super-amphiphobic impeller.
Comparative example 1
The only difference from example 1 is that in this comparative example, the impeller is etched in a 7mol/L hydrochloric acid solution for 1.5h in step (1).
Comparative example 2
The only difference from example 1 is that in this comparative example, step (1) is: the impeller was etched in 1mol/L aqueous sodium hydroxide at 60 ℃ for 1.5 h.
Comparative example 3
The only difference from example 1 is that this comparative example does not perform step (1), but only performs step (2).
Comparative example 4
The only difference from example 1 is that this comparative example does not perform step (2), but only performs step (1).
Performance testing
Performance tests were performed on the impellers provided in examples 1-7 and comparative examples 1-4:
(1) contact angle: the contact angle of the impeller to water and edible oil was measured using a contact angle measuring instrument.
(2) And (3) testing the use condition: the impeller was mounted on a range hood and after 60 days of use, the impeller surface condition was observed, wherein:
1-no oil stain;
2-a small amount of oil stains are arranged at the small gaps;
3-a small amount of oil stains are arranged at the small gaps and on the surfaces of the blades;
4-the surface of the blade has a great amount of oil stains.
The test results are shown in table 1:
TABLE 1
The embodiment shows that the impeller obtained by the invention has excellent hydrophobic and oleophobic performances, and the data of the embodiment shows that the contact angle of the impeller obtained by the invention to water can reach more than 145 degrees, and the contact angle to edible oil can reach more than 139 degrees, when the adopted fluoroalkoxysilane is heptadecafluorodecyltriethoxysilane, the contact angle of the impeller obtained by the invention to water is more than 150 degrees, and the contact angle to edible oil is more than 142 degrees, so that the impeller has excellent oleophobic and hydrophobic effects; by adjusting the concentration of ammonium hydroxide, the reaction conditions such as etching temperature, etching time, surface modification time and the like, the contact angle of the impeller water obtained by the method can reach 159 degrees, and the contact angle of the impeller water to oil can reach 150 degrees; as can be seen from the comparison between the embodiment 1 and the comparative examples 1 to 4, the impeller obtained by the invention has better oleophobic and hydrophobic characteristics only by the cooperation of the weak alkaline aqueous solution etching and the surface modification, and the two characteristics are not good.
The applicant states that the present invention is illustrated by the above embodiments of the super-amphiphobic impeller and the preparation method and application thereof, but the present invention is not limited to the above embodiments, i.e. it does not mean that the present invention must be implemented by the above embodiments. It will be apparent to those skilled in the art that any modification of the present invention, equivalent substitutions of selected materials and additions of auxiliary components, selection of specific modes and the like, which are within the scope and disclosure of the present invention, are contemplated by the present invention.
Claims (3)
1. The preparation method of the super-amphiphobic impeller is characterized by comprising the following steps of:
(1) etching the impeller in 0.02-0.06mol/L ammonium hydroxide aqueous solution at 50-70 ℃ for 20-40 hours, and then washing and drying;
(2) soaking the impeller obtained in the step (1) in an ethanol solution of heptadecafluorodecyltriethoxysilane with the volume fraction of 1.20-1.50% for 30-60 minutes for surface modification, and drying at 60-100 ℃ for 10-20 minutes to obtain the super-amphiphobic impeller;
the impeller is made of a steel plate obtained by cold rolling carbon steel.
2. A super-amphiphobic impeller, characterized in that heptadecafluorodecyltriethoxysilane is grafted on the surface of the super-amphiphobic impeller, and the super-amphiphobic impeller is prepared by the preparation method of claim 1.
3. A range hood, characterized in that the range hood impeller is the super-amphiphobic impeller of claim 2.
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