CN117467179A - High-stability shark skin-like super-lubrication antifouling surface structure and preparation method thereof - Google Patents
High-stability shark skin-like super-lubrication antifouling surface structure and preparation method thereof Download PDFInfo
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
Abstract
A high-stability shark skin-like super-lubrication antifouling surface structure and a preparation method thereof belong to the technical field of antifouling surface preparation, and the specific scheme is as follows: the high-stability super-lubrication antifouling surface structure of the shark skin comprises a plurality of shark skin-like micro-grooves, nano particles and lubricating liquid, wherein the nano particles are uniformly dispersed in the plurality of shark skin-like micro-grooves, and the lubricating liquid is injected into the plurality of shark skin-like micro-grooves. The invention designs the micro-groove polymer surface with the shark skin-like structure, and introduces the nano structure into the micro-groove structure by a solvent swelling method to enhance the stability of the lubricating liquid, so that the stability of the lubricating liquid in the prepared SLIS is greatly improved, and after the high-speed centrifugal shearing action, the liquid drops still slide on the SLIS surface easily.
Description
Technical Field
The invention belongs to the technical field of antifouling surface preparation, and particularly relates to a high-stability shark skin-like super-lubrication antifouling surface structure and a preparation method thereof.
Background
In nature, many animals and plants have anti-biofouling functions on their surfaces, such as butterfly wings, fly eyes, lotus leaves, shark skin, shells, etc. Among them, the lubricating liquid injection surface (SLIS) studied by researchers inspired by nepenthes has received a great deal of attention because of its low drop contact angle hysteresis and excellent contamination resistance. The lubrication liquid injection surface (SLIS) can be simply divided into one-dimensional SLIS, two-dimensional SLIS, and three-dimensional SLIS from the viewpoint of the constructed SLIS dimension.
The base structure carrying the lubricating oil in one-dimensional (1D) SLIS is on a molecular scale (only a monolayer or a few monolayers). The lubricating oil (nano-scale thickness) interacts with the molecular monolayer on the surface to stabilize it, or it grafts directly onto the surface. Two preparation methods of one-dimensional (1D) SLIS exist, wherein a monolayer is grafted on a substrate, and a molecular monolayer plays a role in adsorbing lubricating oil, and most of the preparation methods use perfluorocarbon reagents (such as perfluorodecalin and the like) to treat the substrate, for example, perfluorocarbon reagents are used for treatment in the cleaning of medical equipment, interaction between perfluorocarbon modified equipment and injected lubricating oil perfluorodecalin is enhanced, and a stably-existing lubricating oil film can effectively reduce cell adhesion and thrombus formation. The second approach is to graft long chain molecules directly onto the surface, which still have liquid-like characteristics. The SLIS constructed in this manner has attracted considerable attention because of the effective avoidance of lubricating oil loss problems, and the one-dimensional SLIS is prepared by grafting long chains of PDMS onto silicon wafers or other surfaces, or by grafting polymer brushes or perfluoropolymers onto the surfaces, using heat or acid catalysts.
Two-dimensional (2D) SLIS is a device that increases the interaction of the lubricating oil with the surface by capillary action created by micro-nano structures on the surface, and intermolecular forces also contribute to the formation of a stable lubricating oil film on the upper part of the structure, long-range and short-range interactions are both very important for SLIS. The preparation process of the two-dimensional SLIS generally comprises the steps of constructing a coarse substrate, modifying the coarse substrate to improve the binding force between lubricating oil and the substrate, and then injecting the lubricating oil into the coarse structure. Such methods may be applied to a variety of substrate structures, organic or inorganic, rigid or flexible substrates, and the like.
The three-dimensional network structure and the three-dimensional porous structure in the three-dimensional (3D) SLIS are beneficial to capturing and storing lubricating oil. In contrast to two-dimensional SLIS, three-dimensional SLIS can drive storage of lubricant through entropy gained by the swelling state of the polymer. In three-dimensional SLIS, the lubricating oil is filled into a polymer or a three-dimensional network structure having chemical affinity with the lubricating oil, and a smooth lubricating oil film is formed only on the surface. Although the lubricating oil film is unstable only by intermolecular force fixation, a large amount of lubricating oil existing in the three-dimensional structure can timely compensate the loss of the top lubricating oil so as to ensure the stable existence of the excellent SLIS performance. Three-dimensional SLIS is also known as organogel, and its use in many fields has been studied extensively.
Marine organisms attach to ships and marine facilities with great damage, more than 2000 species of marine organisms attach, and often 50-100 species of marine organisms attach, wherein more than half of the marine organisms live in offshore and gulf places, and although the attaching form is complex, the attaching form has a certain rule, namely the fouling process from bacterial films to complete attached organism communities. Taking steel as an example: the actual fouling process in seawater is: (1) After the steel is immersed in seawater, bacteria are attached to the surface of the steel within a few hours and propagate according to geometric bases, and a bacterial film is formed on the surface of the steel; (2) After 10-15 days, forming large corrosion plaque on the surface of the steel, and forming a micro biological mucous membrane composed of bacteria, micro algae (diatom), protozoa, biological spores and the like; (3) Generally, after half a year, spores of large-scale attached organisms parasitize and develop in a micro-biological mucous membrane to form a breeding competition field; (4) After 1 year immersion in seawater, the fouling organisms initially form a complete biological community. The shark skin is composed of tiny rectangular scales, the scales are shield scales, the scales are compactly and orderly arranged and are tooth-shaped, tooth tips tend to the same direction, adjacent scales are overlapped at the edge parts, and the tiny scales and the orderly arranged enable the shark surface to be smoother. The ordered structure of the surface of the shark skin reduces the friction force on the surface, and meanwhile, the shark skin secretes mucus to form a hydrophilic low-surface-energy surface, so that marine organisms are difficult to attach, and microbial colonization is greatly reduced.
Although the anti-fouling properties of the lubricating liquid injected into the surface (SLIS) are excellent, the lubricating liquid on the surface is easily lost under some extreme conditions such as high temperature and high pressure, strong acid and strong alkali conditions, and the anti-fouling properties of the surface are lost.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a high-stability super-lubrication anti-fouling surface structure similar to a shark skin and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the high-stability super-lubrication antifouling surface structure of the shark skin comprises a plurality of shark skin-like micro-grooves, nano particles and lubricating liquid, wherein the nano particles are uniformly dispersed in the plurality of shark skin-like micro-grooves, and the lubricating liquid is injected into the plurality of shark skin-like micro-grooves.
Further, the shark skin-like micro-groove has a height of 30-300 μm and a width of 50-300 μm.
Preferably, the shark skin-like micro-groove has a height of 150 μm and a width of 200 μm.
Further, the plurality of shark skin-like micro-grooves are arranged in parallel.
Further, the lubricating liquid comprises one or more of perfluoropolyether lubricating liquid, fluoro oil, silicone oil and vegetable oil; the nanoparticles comprise SiO 2 One or more of nanoparticles, ferroferric oxide nanoparticles, silver nanoparticles. Preferably, the silicone oil is polydimethylsiloxane, and the vegetable oil comprises olive oil, soybean oil and the like.
The preparation method of the high-stability shark skin-like super-lubrication antifouling surface structure comprises the following steps:
step one, preparing an epoxy resin substrate with a plurality of shark skin-like micro-groove structures;
uniformly dispersing an organic solvent and nano particles by ultrasonic to obtain a dispersion liquid, immersing an epoxy resin substrate into the dispersion liquid for ultrasonic treatment, then cleaning away redundant nano particles, and drying;
and thirdly, injecting lubricating liquid into the product obtained in the second step, standing vertically for about 30min after the lubricating liquid is fully spread on the surface, and removing redundant lubricating liquid, wherein the surface is changed from a plane to a liquid surface with an uneven shark skin-like micro-groove structure, so that the high-stability shark skin-like super-lubricating antifouling surface structure is obtained.
Further, in the first step, the preparation method of the epoxy resin substrate comprises the following steps:
s1, preparing an original template with a shark skin-like micro-groove structure;
s2, fully mixing polydimethylsiloxane with a curing agent I, pouring the mixture on an original template after vacuum degassing treatment, and curing to obtain a PDMS template;
and S3, fully mixing the epoxy resin with a curing agent II, pouring the mixture on the PDMS template after vacuum degassing treatment, and curing to obtain the epoxy resin substrate.
In the second step, the organic solvent is one or more of n-hexane, ethanol, acetone, methanol, dimethylformamide, toluene, dichloromethane, n-heptane, cyclohexane and ethyl acetate.
Further, in S1, a 3D printing technique is used to design and prepare an original template of a shark skin-like micro-groove structure, and fluorosilane is used to modify the surface of the original template.
Further, in S2, the surface of the PDMS template is modified with fluorosilane.
Further, the fluorosilane comprises one or more of 1H, 2H-perfluoro heptadecane trimethyloxysilane, 1H, 2H-perfluoro decyl trichlorosilane, perfluoro hexyl ethyl trimethoxysilane and perfluoro hexyl ethyl triethoxysilane.
Further, in step S3, the epoxy resin includes E44 or E51, the curing agent ii includes polyetheramine or polyamide, and the epoxy resin and the curing agent ii are mixed according to a mass ratio of 1:0.2-1:0.5.
Further, the curing agent I is commercially available and can be used to effect curing of the polydimethylsiloxane.
Further, in the second step, the mass ratio of the organic solvent to the nano particles is 10:1-10:3, and after the organic solvent and the nano particles are mixed, the ultrasonic treatment is carried out for 10-20min until the nano particles are uniformly dispersed in the organic solvent; immersing the epoxy resin substrate in the step one into the dispersion system after ultrasonic treatment, wherein the ultrasonic treatment time is set to be 10-15min, and in addition, because the organic solvent volatilizes in the ultrasonic treatment process, a certain amount of organic solvent is required to be periodically supplemented, the concentration of nano particles in the dispersion system is maintained to be stable, then taking out the sample after ultrasonic treatment, placing the sample in ethanol solution for repeated washing to remove superfluous nano particles on the surface, and then drying the sample in an oven at 100 ℃ for 2-3h.
Compared with the prior art, the invention has the beneficial effects that:
the PDMS is used, so that the cured resin has high flexibility, and the structure can be completely stored because the template method is easy to release the film when the template method is used for reverse molding and copying the shark skin-like structure; 2. the epoxy resin is used as a common coating primer and a building material in daily life, the epoxy resin is used as a substrate, the application scene of the antifouling surface can be increased, in addition, the epoxy resin also has a shape memory effect, and if the shark skin-like structure is deformed or damaged, the appearance can be recovered after heating for a certain time; 3. the effect of carrying out fluorosilane modification on the obtained template is to facilitate demolding and prevent the solidified resin from adhering to the template; 4. the function of the nano particles is to add a layer of nano-scale structure in the micrometer structure, so that the capillary force of the structure to lubricating liquid is increased, and the stability is improved; 5. the invention is based on the combination of the function of the lubricating surface of the nepenthes for capturing insects and the function of the biological pollution resistance of the surface of the shark skin, the nepenthes in fact represent a static antifouling surface, the shark skin represents a dynamic antifouling surface, and the lubricating function of the nepenthes concretely means that the rough structure of the inner wall and the surface of the nepenthes are one layer of lubricating liquid, so that the insects are difficult to attach and climb out and fall into a cavity; the anti-biological pollution performance of the shark skin means that when water flows through the surface of the shark skin structure, a plurality of eddies are formed on the local part of the surface, so that huge shearing force is generated on the local part of the surface, and the shark can remove pollutants adhered to the surface during swimming.
The invention is inspired by two organisms of sharks and nepenthes in nature, and combines the respective characteristics: the ordered structure of the shark skin and the lubricated surface of nepenthes. The shark skin-like lubricating surface not only has excellent antifouling property, the adsorption of bovine serum albumin on the surface is greatly reduced, but also the lubricating liquid has higher stability, and the sliding angle of liquid drops on the surface is not greatly changed after the lubricating liquid is subjected to high-speed centrifugation at 5000 r/min. The shark skin-like high stability lubricating surface has great potential in the marine antifouling field.
Drawings
FIG. 1 is a photograph of nepenthes;
FIG. 2 is a schematic diagram of the structure of a shark skin (a) and a schematic diagram of the structure of a shark skin (b);
FIG. 3 is a schematic illustration of a process for preparing a high stability shark skin-like lubricated antifouling surface structure;
FIG. 4 is a drawing (a) and a cross-sectional view (b) of a three-dimensional laser copolymerization Jiao Xingmao of a shark skin-like microchannel structure;
FIG. 5 is a view (a) and a cross-sectional view (b) of a three-dimensional laser copolymerization Jiao Xingmao of SLIS after injection of lubricating oil;
FIG. 6 (a) shows modification of SiO by solvent swelling 2 SEM pictures of the front shark skin-like micro-groove structure; (b) Modification of SiO using solvent swelling method 2 SEM pictures of the obtained shark skin-like micro-groove structures;
FIG. 7 is a schematic diagram of modification of SiO using solvent swelling 2 The EDS element distribution diagram of the obtained shark skin-like micro-groove structure;
FIG. 8 shows sliding angles of water on SLIS surface and SHS surface after centrifuging at different rotational speeds, SLIS is modified SiO 2 Injection of the post-shark skin-like micro-groove structureThe surface of lubricating oil, SHS is modified SiO 2 The surface of the obtained shark skin-like micro-groove structure without lubricating oil is provided with a groove;
FIG. 9 is unmodified SiO 2 Shark skin-like micro-groove structure and modified SiO directly injected with lubricating oil (a) 2 Then adding the lubricating oil (b) into the structure of the shark skin-like micro groove, and changing the height of the upper surface of the structure of the shark skin-like micro groove and the surface of the lubricating liquid according to the change of the centrifugal rotating speed;
fig. 10 shows graphs of fluorescence adsorption values of bovine serum albumin of different samples, which are sequentially from left to right: A. an epoxy resin-based planar surface; B. a shark skin-like micro-groove structure; C. modification of SiO similar to shark skin micro-groove structure 2 ；D、SLIS。
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and examples, and it is apparent that the described examples are only some, but not all, of the examples of the invention, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
Example 1:
a preparation method of a high-stability shark skin-like super-lubrication antifouling surface structure comprises the following steps:
preparation before the experiment: designing an original template: the 3D printing technology is utilized to design and prepare the surface of the micro-groove structure similar to the shark skin, and the size of the micro-groove is 150 micrometers in height and 200 micrometers in width; cleaning an original template: soaking the prepared original template in ethanol solution, performing ultrasonic treatment for 10-15min, wherein the ultrasonic treatment time is not too long to prevent damage to the microstructure of the surface, taking out the original template after ultrasonic treatment, slightly brushing by using a brush, then drying the original template in an oven at the temperature of about 50 ℃ and not too high, drying for about 6h, and standing the original template at the normal temperature for 12h. Modification of original template: placing the cleaned and dried original template in a vacuum dryer, dripping a few drops of fluorosilane into a culture dish, vacuumizing by a vacuum pump to enable the fluorosilane to volatilize rapidly so as to better graft a layer of fluorosilane on the template, and standing for 12 hours; the original template cannot be in direct contact with the fluorosilane, otherwise the reaction is too violent and damage to the template occurs.
Step one:
(one), mixing Polydimethylsiloxane (PDMS) with a curing agent I according to the following weight ratio of 10:1, vacuum-pumping the prepolymer in a vacuum drying oven for 10min, wherein bubbles in the prepolymer system basically disappear, then injecting the preliminarily degassed prepolymer into a shark skin-like original template (the width of a micro groove is 200 microns and the height is 150 microns) obtained by using a 3D printing technology, vacuum-pumping the template in the vacuum drying oven for 30min-1h, then placing the template in the oven at the temperature of 70 ℃ for 1h, demoulding to copy the micro groove structure of the shark skin-like structure onto PDMS, placing the PDMS template of the shark skin-like structure in a vacuum dryer, placing a culture dish filled with 3-5 drops of fluorosilane into the culture dish, rapidly volatilizing the fluorosilane by vacuum pump to graft a layer of fluorosilane on the template, and standing for one night;
(II) epoxy resin E44 and polyetheramine D230 are mixed according to the formula 1: and (3) fully and uniformly mixing the materials according to the weight ratio of 0.35, then carrying out vacuum degassing treatment in a vacuum drying oven, pumping air once every 5min, pumping air for 30min, wherein bubbles in the prepolymer basically disappear, pouring the epoxy resin prepolymer system after vacuum pumping air into a PDMS template similar to shark skin, pumping air for 2-3h until the bubbles in the prepolymer system basically disappear, placing the prepolymer after vacuum pumping air into an oven, curing at 100 ℃ for 1h, curing at 130 ℃ for 1h, demoulding, and copying the micro-groove structure surface similar to the shark skin onto an epoxy resin substrate.
Step two: n-hexane and hydrophobic SiO 2 The nano particles are prepared according to the following steps of 10:1, then carrying out ultrasonic treatment for 15min, immersing the surface of the epoxy resin substrate type shark skin micro-groove structure in the step one into the dispersion system after ultrasonic treatment, setting the ultrasonic time to be 10min, then taking out an ultrasonic sample, placing the ultrasonic sample into an ethanol solution, repeatedly washing for 3 times, removing superfluous nano particles on the surface, and then drying the nano particles in an oven at 100 ℃ for 2h.
Step three: and (3) injecting a little excessive perfluoropolyether lubricating liquid (GPL-105) into the surface of the shark skin-like micro-groove structure prepared in the second step by using a dropper, inclining the lubricating liquid in different directions to enable the lubricating liquid to fully spread on the surface, vertically placing a sample for 15-20min, and removing the excessive lubricating liquid to obtain the lubricating liquid injection surface (SLIS), namely the high-stability shark skin-like super-lubricating antifouling surface structure.
As can be seen from fig. 4, the three-dimensional laser confocal microscope is used to characterize the surface morphology of the shark skin-like structure copied to the epoxy resin substrate, and a sectional view of the shark skin-like micro-groove structure is obtained, wherein the depth of the micro-groove structure is about 150 micrometers, which indicates that the shark skin-like micro-groove structure is better copied.
As can be seen from fig. 5, the three-dimensional laser confocal microscope is used to characterize the morphology of the shark skin-like micro-groove into which the nano-particles have been introduced and into which the lubricating liquid has been injected, so as to obtain a cross-sectional view of the surface structure of the sample, the depth of the micro-groove structure almost disappears, the interior of the micro-groove structure is filled with the lubricating liquid, and the high-stability shark skin-like super-lubricating antifouling surface structure has been successfully prepared.
As can be seen from fig. 6, the surface morphology of the sample before and after the nano particles are introduced by using the solvent swelling method is characterized by using a field emission scanning electron microscope, and comparison of the two figures shows that a large number of particles exist on the surface of the treated shark skin-like micro-groove, which indicates that the nano particles are successfully introduced on the surface of the shark skin-like micro-groove.
As can be seen from fig. 7, EDS test was performed on the solvent-swollen shark skin-like micro-grooves, resulting in C, O, si element distribution patterns on the sample surface.
As can be seen from FIG. 8, the original shark skin-like micro-groove structure is swelled by solvent and then introduced with nano SiO 2 The surface becomes super-hydrophobic (SHS) and becomes SLIS surface after the lubricating oil is injected again, the ordinate is the sliding angle of 4 microliter water drops on the surface, the abscissa is the centrifugal rotation speed, the result shows that the water drops can not slide on the SHS, the sliding angle of the water drops on the surface is not changed greatly after the SLIS surface is subjected to high-speed centrifugation, and the lubricating effect of the lubricating surface is kept stable.
As can be seen from fig. 9, the lubricating oil is injected into the shark skin-like micro-groove structure before and after the nano particles are introduced, and then the sample is centrifuged at high speed, and the height from the upper surface of the micro-groove structure to the surface of the lubricating liquid is measured by using a three-dimensional laser confocal microscope, wherein a low height indicates a high content of the lubricating liquid, and the result indicates that the lubricating liquid loss speed is reduced after the nano particles are introduced, thus the stability of the lubricating liquid is improved.
The anti-fouling experiment in this example is to measure the relative value of the adsorption amount of Bovine Serum Albumin (BSA) on the surfaces of different samples, respectively immerse the samples in 5mg/ml BSA solution for 12 hours, measure the adsorption amount of BSA on the surfaces, mark the used BSA grafted fluorescent groups, namely incubate with FITC-BSA, flush the incubated samples to remove the non-adhered FITC-BSA on the surfaces, shoot the samples after adjusting the excitation wavelength to 488nm under a laser confocal microscope to obtain fluorescent images, then process the shot images by using imageJ software, finally obtain the average fluorescent intensity value of each sample surface, and compare the average fluorescent intensity value to obtain the difference of the anti-protein adsorption performance of the surfaces of different samples.
As can be seen from fig. 10, according to the test results, the larger the roughness of the sample surface, the more the protein adsorption amount is, the maximum the protein adsorption amount is on the surface of the shark skin-like structure, the super-hydrophobic surface is formed by introducing nano particles on the SHS surface, the protein adsorption amount is greatly reduced, and the adsorption amount on the SLIS surface is further reduced, which indicates that the prepared shark skin-like super-lubrication sample (SLIS) has excellent antifouling performance.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A high stability shark skin super lubrication antifouling surface structure is characterized in that: the nano-particles are uniformly dispersed in the plurality of the shark skin-like micro-grooves, and the lubricating liquid is injected into the plurality of the shark skin-like micro-grooves.
2. A high stability shark skin-like ultra-lubricious anti-fouling surface structure as in claim 1, wherein: the shark skin-like micro-groove has a height of 30-300 μm and a width of 50-300 μm.
3. A high stability shark skin-like ultra-lubricious anti-fouling surface structure as in claim 1, wherein: the plurality of shark skin-like micro-grooves are arranged in parallel.
4. A high stability shark skin-like ultra-lubricious anti-fouling surface structure as in claim 1, wherein: the lubricating liquid comprises one or a combination of more of perfluoropolyether lubricating liquid, fluorine oil, silicone oil and vegetable oil; the nanoparticles comprise SiO 2 One or more of nanoparticles, ferroferric oxide nanoparticles, silver nanoparticles.
5. A method of preparing a high stability shark skin-like ultra-lubricious antifouling surface structure as claimed in any of claims 1 to 4, comprising the steps of:
step one, preparing an epoxy resin substrate with a plurality of shark skin-like micro-groove structures;
uniformly dispersing an organic solvent and nano particles by ultrasonic to obtain a dispersion liquid, immersing an epoxy resin substrate into the dispersion liquid for ultrasonic treatment, then cleaning away redundant nano particles, and drying;
and thirdly, injecting lubricating liquid into the product obtained in the second step, fully spreading the lubricating liquid on the surface, standing the product, and vertically placing the product to remove redundant lubricating liquid to obtain the high-stability shark skin-like super-lubrication antifouling surface structure.
6. The method of manufacturing according to claim 5, wherein: in the first step, the preparation method of the epoxy resin substrate comprises the following steps:
s1, preparing an original template with a shark skin-like micro-groove structure;
s2, fully mixing polydimethylsiloxane with a curing agent I, pouring the mixture on an original template after vacuum degassing treatment, and curing to obtain a PDMS template;
and S3, fully mixing the epoxy resin with a curing agent II, pouring the mixture on the PDMS template after vacuum degassing treatment, and curing to obtain the epoxy resin substrate.
7. The method of manufacturing according to claim 5, wherein: in the second step, the organic solvent is one or a combination of more of n-hexane, ethanol, acetone, methanol, dimethylformamide, toluene, methylene dichloride, n-heptane, cyclohexane and ethyl acetate.
8. The method of manufacturing according to claim 6, wherein: in S1, a 3D printing technology is used for designing and preparing an original template similar to a shark skin micro-groove structure, and fluorosilane is used for modifying the surface of the original template.
9. The method of manufacturing according to claim 6, wherein: in S2, the surface of the PDMS template is modified with fluorosilane.
10. The preparation method according to claim 8 or 9, characterized in that: the fluorosilane comprises one or more of 1H, 2H-perfluoro heptadecane trimethyloxysilane, 1H, 2H-perfluoro decyl trichlorosilane, perfluoro hexyl ethyl trimethoxysilane and perfluoro hexyl ethyl triethoxysilane.
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