CN113214569A - Friction-resistant super-hydrophobic surface and preparation method thereof - Google Patents
Friction-resistant super-hydrophobic surface and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a friction-resistant super-hydrophobic material and a preparation method thereof, belonging to the technical field of super-hydrophobic material preparation. The prepared sample surface is super-hydrophobic, and under the double actions, the super-hydrophobic surface still keeps a good super-hydrophobic state under the actions of some external forces such as scraping by using a needle tip, rubbing by using sand paper or scraping by using a scraper. The preparation method of the friction-resistant super-hydrophobic surface has the advantages of simplicity and convenience, wide application scenes, strong practicability, strong mechanical stability, low cost and the like.
Description
Technical Field
The invention belongs to the technical field of preparation of super-hydrophobic materials, and particularly relates to a friction-resistant super-hydrophobic material and a preparation method thereof.
Background
The super-hydrophobic surface inspired by organisms in the nature has received continuous attention in recent years, the research for preparing the bionic super-hydrophobic surface has been developed for 20 years, and the bionic super-hydrophobic surface is widely applied to the aspects of corrosion prevention, pollution prevention, fog prevention, self cleaning, anti-icing, resistance-reducing microfluid control and the like. At present, the bionic super-hydrophobic surface is obtained by combining a surface micro-nano composite structure with a low surface energy material. Although the hydrophobic coating or the micro-nano structure has a good hydrophobic effect, the hydrophobic coating or the micro-nano structure is easily damaged by external abrasion or scratch, so that the service life of the super-hydrophobic surface is seriously shortened, and the application of the super-hydrophobic surface in a practical scene is limited. At present, the requirement cannot be met by combining a simple micro-nano composite structure with a low surface energy modification method, and in order to improve the friction resistance of the super-hydrophobic surface, a skillful and efficient design idea and a preparation method are needed to accurately realize the friction-resistant super-hydrophobic surface. Based on the analysis, the design idea, the preparation material and the preparation method which meet the conditions are designed and searched, and the application and development prospect of the super-hydrophobic surface is concerned.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a friction-resistant super-hydrophobic surface and a preparation method thereof. The foam nickel is used as a metal frame on the whole surface, and the foam nickel can be used as a metal frame to protect the poured super-hydrophobic material under the action of external force such as friction and the like due to the advantages of mechanical stability, rigidity and the like. The prepared sample surface is super-hydrophobic, and under the double actions, the super-hydrophobic surface still keeps a good super-hydrophobic state under the actions of some external forces such as scraping by using a needle tip, rubbing by using sand paper or scraping by using a scraper. The preparation method of the friction-resistant super-hydrophobic surface has the advantages of simple method, wide application scene, strong practicability, strong mechanical stability, low cost and the like, and is suitable for outdoor severe environment conditions.
The invention is realized by the following technical scheme:
the super-hydrophobic surface resistant to friction comprises a porous foam metal framework 1 and a filling material 2 filled on the surface and in pores of the porous foam metal framework 1, wherein the filling material 2 consists of a super-hydrophobic material 3 and a binder material 4.
Further, the porous foam metal framework 1 is foam nickel, foam copper or foam iron; the thickness of the porous foam metal framework 1 is 1mm-2mm, and the pore diameter is 75ppi-110 ppi.
Further, the super-hydrophobic material 3 is Polydivinylbenzene (PDVB) material; the adhesive 4 is a Polydimethylsiloxane (PDMS) material.
A preparation method of a friction-resistant super-hydrophobic surface comprises the following specific steps:
(1) preparing a porous foam metal framework:
cutting the porous foam metal framework, and sticking the porous foam metal framework on a glass plate by using a 3M adhesive tape for fixing;
(2) and preparing a filling material:
firstly, adding PDVB powder into diluted PDMS in portions, continuously stirring to fully disperse all the powder into PDMS, and then heating and stirring the powder on a heat-radiating table so as to enable n-hexane to volatilize until the whole mixture is in a viscous state to form a filling material;
(3) preparation of friction-resistant superhydrophobic surface:
firstly, pouring the filling material on a prepared porous foam metal framework, then scraping the mixture into the porous foam metal framework by a scraper, repeating the operation, so as to fully fill the filling material in the porous foam metal framework and ensure that no excessive mixture remains on the surface, then curing the sample in an oven, and obtaining the friction-resistant superhydrophobic surface after the curing is finished.
Further, the porous foam metal framework 1 is cut into the size of 20mm to 400mm, the thickness of the porous foam metal framework 1 is 1mm to 2mm, and the pore diameter is 75ppi to 110 ppi.
Further, the PDVB described in step (2) is prepared by the following method:
firstly, 2g to 4g of Divinylbenzene (DVB) is dissolved in 20ml to 40ml of ethyl acetate, and then 0.05g to 0.1g of Azobisisobutyronitrile (AIBN) is added as an initiator; then stirring the solution at room temperature for 4-5 h, and transferring the solution into a reaction kettle after fully stirring; putting the reaction kettle into an oven, heating for 24 hours at the temperature of 100 ℃, then opening a cover of an inner container of the reaction kettle for natural cooling, wherein the cooling and volatilization time is 12-15 hours, so as to obtain a solid material of PDVB, putting the PDVB into a mortar, and grinding into powder, so as to obtain a powdery PDVB material.
Further, the PDMS in the step (2) is specifically prepared by mixing a PDMS precursor and a curing agent in a mass ratio of 10: 1, to form a fluid PDMS.
Further, the PDMS in the step (2) is diluted by n-hexane, and the dilution ratio is that the mass ratio of the PDMS to the n-hexane is 1: 3-1: 5, the purpose is to dilute the PDMS so that the PDMS and PDVB can be better and uniformly mixed.
Further, the mass ratio (m) of PDMS to PDVB in the step (2)PDMS:mPDVB) Is 0.8: 1-1: 2; the PDVB is added for 5-10 times in batches in the step (2); the dosage of each addition is 0.5g to 1 g; the temperature of the hot platform is 40-60 ℃; the stirring speed is 400 r/min-800 r/min.
Further, in the step (3), the curing temperature is 70-90 ℃, and the curing time is 40-60 min; the number of the repeated operations is 2-4 times; the filling amount is 2.5 g-7.5 g.
Compared with the prior art, the invention has the following advantages:
(1) compared with other preparation methods of the super-hydrophobic surface, the preparation method has the advantages of wide application scene, strong practicability, strong mechanical stability, low cost and the like;
(2) compared with other common super-hydrophobic surfaces, the super-hydrophobic surface has the advantages of resistance to abrasion such as needle point scraping, abrasive paper friction or scraper scraping.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic cross-sectional structure diagram of the present invention for preparing a friction-resistant superhydrophobic surface;
FIG. 2 is a schematic diagram of a process for preparing a rub resistant superhydrophobic surface according to the present invention;
FIG. 3 is a super depth of field three-dimensional microscopic view of a rub resistant superhydrophobic surface of the invention;
wherein, (a) is a picture under an objective lens of 10 times, and (b) is a picture under an objective lens of 20 times;
FIG. 4 is a schematic representation of a rub resistant superhydrophobic surface of the invention under needle tip scraping and water droplet rolling after scraping;
wherein (a) is a schematic diagram of a friction-resistant superhydrophobic surface under needle tip scraping; (b) the schematic diagram of the scraped water drops falling off;
FIG. 5 is a schematic representation of a rub resistant superhydrophobic surface of the invention under sandpaper rubbing and a schematic representation of water droplet rolling after rubbing;
wherein (a) is a schematic representation of a rub resistant superhydrophobic surface under sandpaper rubbing; (b) is a schematic diagram of the water drops after friction falling;
fig. 6 is a schematic illustration of a friction resistant superhydrophobic surface of the present invention under a scraper scratch and a schematic illustration of a water droplet rolling after the scratch;
wherein (a) is a schematic diagram of a friction-resistant superhydrophobic surface under a scraper scratch; (b) the water drops after being scraped roll off;
fig. 7 is a contact angle picture of a friction-resistant superhydrophobic surface of the invention before and after needle point scraping, abrasive paper rubbing, and squeegee scraping;
wherein (a) is the contact angle of the superhydrophobic surface prior to testing; (b) the contact angle of the superhydrophobic surface after testing (needle point scraping, abrasive paper rubbing, scraper rubbing).
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:
the super-hydrophobic surface resistant to friction comprises a porous foam metal framework 1 and a filling material 2 filled on the surface and in pores of the porous foam metal framework 1, wherein the filling material 2 consists of a super-hydrophobic material 3 and a binder material 4.
The porous foam metal framework 1 is foam nickel, foam copper or foam iron; the thickness of the porous foam metal framework 1 is 1mm-2mm, and the pore diameter is 75ppi-110 ppi.
The super-hydrophobic material 3 is a PDVB material; the adhesive 4 is a PDMS material.
The porous foam metal framework 1 is a metal functional material which is in a framework-shaped structure and contains a plurality of pores. The super-hydrophobic material 3 in the filling material 2 is a part which plays a main super-hydrophobic role, and the binder 4 plays a role in binding particles of the super-hydrophobic material 3.
Example 1
The embodiment provides a preparation method of a friction-resistant super-hydrophobic surface, which comprises the following steps;
(1) preparing a porous foam metal framework: the used porous foam metal framework is foam nickel, the foam nickel is cut into the size of 100mm x 100mm, and the foam nickel is stuck on a glass plate by using a 3M adhesive tape for fixing;
(2) and preparing a filling material: the filler material used is a mixture of a superhydrophobic material and a binder 4. The super-hydrophobic material used was PDVB powder and the binder used was PDMS. Firstly, 5g of PDVB powder is respectively added into 24g of PDMS diluted by n-hexane (wherein the mass of the PDMS is 4g, the mass of the n-hexane is 20g, and the mass ratio is 1: 5) by 5 times, continuous stirring is carried out to ensure that all the PDVB powder can be fully dispersed into the solution, and then the PDVB powder is placed on a hot table at about 50 ℃ and stirred while being heated, so that the n-hexane can volatilize until the whole mixture is in a viscous state;
the specific preparation step of the PDMS is that a PDMS precursor and a curing agent are fully mixed according to the mass ratio of 3.64g to 0.36g (the mass ratio is 10: 1) respectively to form fluid PDMS, and then 20g of n-hexane is added to dilute the fluid PDMS (the dilution ratio is 1: 3). In addition, PDVB is prepared by the following method: first, 2g of Divinylbenzene (DVB) was dissolved in 20ml of ethyl acetate, and then 0.05g of Azobisisobutyronitrile (AIBN) was added as an initiator; then stirring the solution at room temperature for 4 hours, and transferring the solution into a reaction kettle after fully stirring; putting the reaction kettle into an oven, heating for 24 hours at the temperature of 100 ℃, then opening a cover of an inner container of the reaction kettle, naturally cooling for 12 hours to obtain a solid material of PDVB, putting the PDVB into a mortar, and grinding into powder to obtain the powdery PDVB material.
(3) Preparation of friction-resistant superhydrophobic surface: firstly, filling the filling material into the prepared foam nickel for 3 times, and repeatedly scraping the surface by using a scraper blade to match, so that the filling material is fully filled in the foam nickel, then curing the sample in an oven at the temperature of 85 ℃, and obtaining the friction-resistant super-hydrophobic surface after the curing is finished.
FIG. 2 is a schematic flow chart of a method for preparing a friction-resistant superhydrophobic surface according to the present invention: firstly, fully mixing a super-hydrophobic material and a diluted adhesive, wherein the used diluent is n-hexane, then pouring a filling material into foamed nickel for multiple times, and finally putting a sample into an oven at 85 ℃ for curing for 1 hour.
FIG. 3 is a confocal photograph of a rub resistant superhydrophobic surface in a process of the invention; wherein FIG. 3(a) is a confocal photograph at a magnification of 10, it can be seen that the filling material can be completely filled in the porous foam metal skeleton; fig. 3(b) is a confocal photograph at 20 x magnification showing that the surface of the filler material is relatively rough.
Example 2
The embodiment provides a preparation method of a super-hydrophobic surface resistant to needle point scraping, which comprises the following steps;
(1) preparing a porous foam metal framework: the used porous foam metal framework is foam nickel, the foam nickel is cut into the size of 100mm x 100mm, and the foam nickel is stuck on a glass plate by using a 3M adhesive tape for fixing;
(2) and preparing a filling material: the filler material used is a mixture of a superhydrophobic material and a binder. The super-hydrophobic material used was PDVB powder and the binder used was PDMS. Firstly, 5g of PDVB powder is respectively added into 24g of PDMS diluted by n-hexane (wherein the mass of the PDMS is 4g, the mass of the n-hexane is 20g, and the mass ratio is 1: 5) by 8 times, continuous stirring is carried out to ensure that all the PDVB powder can be fully dispersed into the solution, and then the PDVB powder is placed on a hot table at about 50 ℃ and stirred while being heated, so that the n-hexane can volatilize until the whole mixture is in a viscous state;
the specific preparation step of the PDMS is that a PDMS precursor and a curing agent are fully mixed according to the mass ratio of 3.64g to 0.36g (the mass ratio is 10: 1) respectively to form fluid PDMS, and then 20g of n-hexane is added to dilute the fluid PDMS (the dilution ratio is 1: 3). In addition, PDVB is prepared by the following method: first, 2g of Divinylbenzene (DVB) was dissolved in 20ml of ethyl acetate, and then 0.05g of Azobisisobutyronitrile (AIBN) was added as an initiator; then stirring the solution at room temperature for 4 hours, and transferring the solution into a reaction kettle after fully stirring; putting the reaction kettle into an oven, heating for 24 hours at the temperature of 100 ℃, then opening a cover of an inner container of the reaction kettle, naturally cooling for 12 hours to obtain a solid material of PDVB, putting the PDVB into a mortar, and grinding into powder to obtain the powdery PDVB material.
(3) Preparation of friction-resistant superhydrophobic surface: firstly, filling the filling material into the prepared foam nickel for 3 times, and repeatedly scraping the surface by using a scraper blade to ensure that the filling material is fully filled in the foam nickel, then curing the sample in an oven at the temperature of 80 ℃, and obtaining the friction-resistant super-hydrophobic surface after the curing is finished.
FIG. 4 is a schematic representation of a rub resistant superhydrophobic surface of the invention under needle tip scraping and water droplet rolling after scraping;
wherein fig. 4(a) is a schematic representation of a rub-resistant superhydrophobic surface under needle-tip scraping, using the needle tip of a syringe to scrape back and forth across the sample surface in the direction shown; fig. 4(b) is a schematic diagram of the rolling of the water drops after scraping, and it can be found that the water drops quickly roll off just after dropping on the surface of the sample, and the sample can still keep a super-hydrophobic state after the needle tip scrapes.
Example 3
The embodiment provides a preparation method of a super-hydrophobic surface resistant to abrasive paper friction, which comprises the following steps;
(1) preparing a porous foam metal framework: the used porous foam metal framework is foam nickel, the foam nickel is cut into the size of 100mm x 100mm, and the foam nickel is stuck on a glass plate by using a 3M adhesive tape for fixing;
(2) and preparing a filling material: the filler material used is a mixture of a superhydrophobic material and a binder. The super-hydrophobic material used was PDVB powder and the binder used was PDMS. Firstly, 5g of PDVB powder is respectively added into 22.5g of PDMS diluted by n-hexane (wherein the mass of the PDMS is 4.5g, the mass of the n-hexane is 18g, and the mass ratio is 1: 4) by 5 times, continuous stirring is carried out to ensure that all the PDVB powder can be fully dispersed into a solution, and then the PDVB powder is placed on a hot table at about 50 ℃ and stirred while being heated, so that the n-hexane can volatilize until the whole mixture is in a viscous state;
the specific preparation step of the PDMS is that a PDMS precursor and a curing agent are fully mixed according to the mass ratio of 4.09g to 0.41g (the mass ratio is 10: 1) respectively to form fluid PDMS, and then 18g of n-hexane is added to dilute the fluid PDMS (the dilution ratio is 1: 3). In addition, PDVB is prepared by the following method: first, 2g of Divinylbenzene (DVB) was dissolved in 20ml of ethyl acetate, and then 0.05g of Azobisisobutyronitrile (AIBN) was added as an initiator; then stirring the solution at room temperature for 4 hours, and transferring the solution into a reaction kettle after fully stirring; putting the reaction kettle into an oven, heating for 24 hours at the temperature of 100 ℃, then opening a cover of an inner container of the reaction kettle, naturally cooling for 12 hours to obtain a solid material of PDVB, putting the PDVB into a mortar, and grinding into powder to obtain the powdery PDVB material.
(3) Preparation of friction-resistant superhydrophobic surface: firstly, filling the filling material into the prepared foam nickel for 3 times, and repeatedly scraping the surface by using a scraper blade to ensure that the filling material is fully filled in the foam nickel, then curing the sample in an oven at the temperature of 80 ℃, and obtaining the friction-resistant super-hydrophobic surface after the curing is finished.
FIG. 5 is a schematic representation of a rub resistant superhydrophobic surface of the invention under sandpaper rubbing and a schematic representation of water droplet rolling after rubbing;
wherein FIG. 5(a) is a schematic representation of a rub resistant superhydrophobic surface under sandpaper rubbing, we rubbed back and forth across the sample surface using a 100 mesh sandpaper in the direction shown; fig. 5(b) is a schematic diagram of the rolling of the scraped water drops, and it can be found that the water drops quickly roll off just after dropping on the surface of the sample, and the sample can still keep a super-hydrophobic state after being rubbed by the sandpaper.
Example 4
The embodiment provides a preparation method of a super-hydrophobic surface scraped by a scraper, which comprises the following steps;
(1) preparing a porous foam metal framework: the used porous foam metal framework is foam nickel, the foam nickel is cut into the size of 100mm x 100mm, and the foam nickel is stuck on a glass plate by using a 3M adhesive tape for fixing;
(2) and preparing a filling material: the filler material used is a mixture of a superhydrophobic material and a binder. The super-hydrophobic material used was PDVB powder and the binder used was PDMS. Firstly, 5g of PDVB powder is respectively added into 20g of PDMS diluted by n-hexane (wherein the mass of the PDMS is 5g, the mass of the n-hexane is 15g, and the mass ratio is 1:3) by 5 times, continuous stirring is carried out to ensure that all the PDVB powder can be fully dispersed into the solution, and then the PDVB powder is placed on a hot table at about 50 ℃ and stirred while being heated, so that the n-hexane can volatilize until the whole mixture is in a viscous state;
the specific preparation step of the PDMS is that a PDMS precursor and a curing agent are fully mixed according to the mass ratio of 4.55g to 0.45g (the mass ratio is 10: 1) respectively to form fluid PDMS, and then 15g of n-hexane is added to dilute the fluid PDMS (the dilution ratio is 1: 3). In addition, PDVB is prepared by the following method: first, 2g of Divinylbenzene (DVB) was dissolved in 20ml of ethyl acetate, and then 0.05g of Azobisisobutyronitrile (AIBN) was added as an initiator; then stirring the solution at room temperature for 4 hours, and transferring the solution into a reaction kettle after fully stirring; putting the reaction kettle into an oven, heating for 24 hours at the temperature of 100 ℃, then opening a cover of an inner container of the reaction kettle, naturally cooling for 12 hours to obtain a solid material of PDVB, putting the PDVB into a mortar, and grinding into powder to obtain the powdery PDVB material.
(3) Preparation of friction-resistant superhydrophobic surface: firstly, filling the filling material into the prepared foam nickel for 3 times, and repeatedly scraping the surface by using a scraper blade to ensure that the filling material is fully filled in the foam nickel, then curing the sample in an oven at the temperature of 80 ℃, and obtaining the friction-resistant super-hydrophobic surface after the curing is finished.
Fig. 6 is a schematic illustration of a friction resistant superhydrophobic surface of the present invention under a scraper scratch and a schematic illustration of a water droplet rolling after the scratch;
wherein fig. 6(a) is a schematic view of a friction-resistant superhydrophobic surface under a scraper cut, we use the scraper to rub back and forth across the sample surface in the direction shown in the figure; fig. 6(b) is a schematic diagram of the rolling of the water drops after the scraping, and it can be found that the water drops just drop on the surface of the sample and then quickly roll off, and the sample can still keep a super-hydrophobic state after the scraping.
Fig. 7 is a contact angle picture of a friction-resistant superhydrophobic surface of the invention before and after needle point scraping, abrasive paper rubbing, and squeegee scraping.
Wherein, fig. 7(a) is the contact angle of the superhydrophobic surface before the test, and it can be seen that the contact angle of the sample surface before the sample surface is scratched by a needle tip, a sand paper and a scraper is 152 ° ± 1 °; fig. 7(b) shows that the contact angle of the superhydrophobic surface after the test (through needle point scraping, sand paper rubbing and scraper scraping) is still maintained at 152 ° ± 1 °, and the superhydrophobic surface of the invention has an excellent friction-resistant effect.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The friction-resistant super-hydrophobic surface is characterized by comprising a porous foam metal framework (1) and a filling material (2) filled in the surface and pores of the porous foam metal framework (1), wherein the filling material (2) consists of a super-hydrophobic material (3) and a binder material (4).
2. An abrasion resistant superhydrophobic surface according to claim 1, wherein said porous foam metal skeleton (1) is nickel foam, copper foam or iron foam; the thickness of the porous foam metal framework (1) is 1mm-2mm, and the pore diameter is 75ppi-110 ppi.
3. An abrasion resistant superhydrophobic surface according to claim 1, wherein said superhydrophobic material (3) is polydivinylbenzene PDVB material; the adhesive (4) is a polydimethylsiloxane material.
4. The method for preparing an abrasion-resistant superhydrophobic surface of claim 1, comprising the steps of:
(1) preparing a porous foam metal framework:
cutting the porous foam metal framework, and sticking the porous foam metal framework on a glass plate by using a 3M adhesive tape for fixing;
(2) and preparing a filling material:
firstly, adding PDVB powder into diluted PDMS in portions, continuously stirring to fully disperse all the powder into PDMS, and then heating and stirring the powder on a heat-radiating table so as to enable n-hexane to volatilize until the whole mixture is in a viscous state to form a filling material;
(3) preparation of friction-resistant superhydrophobic surface:
firstly, pouring the filling material on a prepared porous foam metal framework, then scraping the mixture into the porous foam metal framework by a scraper, repeating the operation, so as to fully fill the filling material in the porous foam metal framework and ensure that no excessive mixture remains on the surface, then curing the sample in an oven, and obtaining the friction-resistant superhydrophobic surface after the curing is finished.
5. The method of claim 1, wherein the porous metal foam skeleton 1 is cut to a size of 20mm by 20mm to 400mm by 400mm, the porous metal foam skeleton 1 has a thickness of 1mm to 2mm and a pore size of 75ppi to 110 ppi.
6. The method of claim 1, wherein the PDVB is prepared by the following steps:
firstly, 2g to 4g of divinylbenzene DVB is dissolved in 20ml to 40ml of ethyl acetate, and then 0.05g to 0.1g of azobisisobutyronitrile AIBN is added as an initiator; then stirring the solution at room temperature for 4-5 h, and transferring the solution into a reaction kettle after fully stirring; putting the reaction kettle into an oven, heating for 24 hours at the temperature of 100 ℃, then opening a cover of an inner container of the reaction kettle for natural cooling, wherein the cooling and volatilization time is 12-15 hours, so as to obtain a solid material of PDVB, putting the PDVB into a mortar, and grinding into powder, so as to obtain a powdery PDVB material.
7. The method for preparing an abrasion-resistant superhydrophobic surface according to claim 1, wherein the PDMS in the step (2) is prepared by mixing a PDMS precursor and a curing agent in a mass ratio of 10: 1, to form a fluid PDMS.
8. The method for preparing an abrasion-resistant superhydrophobic surface according to claim 1, wherein the PDMS in the step (2) is diluted by n-hexane in a ratio of 1: 3-1: 5, the purpose is to dilute the PDMS so that the PDMS and PDVB can be better and uniformly mixed.
9. The method of claim 1, wherein the mass ratio (m) of PDMS to PDVB in step (2) isPDMS:mPDVB) Is 0.8: 1-1: 2; the PDVB is added for 5-10 times in batches in the step (2); the dosage of each addition is 0.5g to 1 g; the temperature of the hot platform is 40-60 ℃; the stirring speed is 400 r/min-800 r/min.
10. The method for preparing an abrasion-resistant superhydrophobic surface according to claim 1, wherein in the step (3), the curing temperature is 70-90 ℃ and the curing time is 40-60 min; the number of the repeated operations is 2-4 times; the filling amount is 2.5 g-7.5 g.
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| CN115895024A (en) * | 2022-10-17 | 2023-04-04 | 华南农业大学 | Magnetic super-hydrophobic oleophylic sponge with photo-thermal effect and preparation method and application thereof |
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| CN115895024A (en) * | 2022-10-17 | 2023-04-04 | 华南农业大学 | Magnetic super-hydrophobic oleophylic sponge with photo-thermal effect and preparation method and application thereof |
| CN115895024B (en) * | 2022-10-17 | 2024-04-05 | 华南农业大学 | Magnetic super-hydrophobic oleophylic sponge with photo-thermal effect and preparation method and application thereof |
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