Preparation method and application of organic silicon foam with stable super-hydrophobic surface layer
By preparing the skinless silicon foam and hydrophobic modification, the existing organic silicon ultra -hydrophobic materials cannot be met at the same time in terms of solid, green environmental protection and lightweight, and realize the formation of stable ultra -hydrophobic surface layers. Suitable for anti -pollution and ice -proof fields.
Patent Information
- Application Number
- CN202411272234.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-01-24
AI Technical Summary
There are problems that existing silicone superhydrophobic materials cannot meet simultaneously in terms of firmness, greenness and lightweight.
By preparing an epidermal silicon foam, the hydrophobic modifier solution is infiltrated into the foam foam structure for chemical reactions, combined with cleaning and sulfide treatment, forming a solid ultra -hydrophobic surface layer.
The stable ultra -hydrophobic surface layer of organic silicon foam is realized, and the hydrophobicity and durability of the material are improved. At the same time, it maintains the characteristics of green environmental protection and lightweight. It is suitable for anti -dirt -proof and ice -proof fields.
Smart Images
Figure CN119350706A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of organosilicon foam materials, and in particular to a method for preparing an organosilicon foam with a stable super-hydrophobic surface layer and application thereof. Background Art
[0002] Wettability is an important property of solid surface, which is generally characterized by the contact angle between the droplet and the solid surface. When the contact angle between the water droplet and the solid surface is greater than 150°, the solid surface is called a super-hydrophobic surface. Super-hydrophobic surfaces are widely used in daily life, national defense, industry and agriculture due to their unique surface properties, such as self-cleaning, anti-fouling, anti-corrosion, and anti-icing, thus arousing great interest. Inspired by the super-hydrophobic surface in nature, more and more artificial super-hydrophobic surfaces are prepared by simulating bionic structures and modifying hydrophobic surfaces. The preparation methods include template method, sol-gel method, electrospinning method, chemical deposition method, etc. Most of the methods start from the construction of surface micro-nano rough structure and the modification of low surface energy materials. The super-hydrophobic surfaces reported at present are mostly prepared by modifying silica nanoparticles of different sizes, and there are also super-hydrophobic surfaces prepared by composite nanoparticles of one-dimensional fiber morphology materials, including organic fibers, plant fibers, carbon fibers, etc.
[0003] Although a large number of achievements have been made in the research on the preparation of super-hydrophobic surfaces, most of the existing methods for preparing super-hydrophobic surfaces have the disadvantages of relatively complex preparation processes, high costs, and poor adhesion to substrates, which have become one of the obstacles to the practical application of super-hydrophobic materials. In addition, most of the super-hydrophobic perfluorinated and polyfluoroalkyl compound modifiers currently used cause multiple adverse effects on human health. It is worth noting that silicone is preferentially used to prepare super-hydrophobic materials because of its inherent hydrophobicity and strong processing ability. In the preparation of super-hydrophobic materials, silicone can be dehydrated and condensed to form micro / nano structures due to its inherent hydrophobicity, and the surface energy of the material surface can be reduced. The super-hydrophobic layer of silicone substrate has the characteristics of simple and fast reaction, high temperature resistance, UV resistance, and anti-aging. Although silicone super-hydrophobic materials have the disadvantage of relatively low mechanical stability, they can be improved by the reasonable design of material structure. On the other hand, benefiting from the rapid development of new energy vehicles, 5G communications, electronic appliances, photovoltaic industries and other fields, the demand for silicone materials has shown a steady growth trend. Especially driven by the country's "dual carbon" goals, the silicone industry, as a new green chemical material, has a more vigorous market demand due to its environmental protection and energy-saving characteristics.
[0004] Based on the above analysis, a method for preparing a silicone foam with a simple, environmentally friendly and stable super-hydrophobic surface is provided, which is of great significance for green applications in the fields of anti-fouling and anti-icing. Summary of the invention
[0005] The embodiments of the present application provide a silicone foam with a stable super-hydrophobic surface layer to solve the problem in the related art that the existing silicone materials cannot simultaneously meet the requirements of super-hydrophobic firmness, green environmental protection, and light weight.
[0006] In a first aspect, the present application provides a stable super-hydrophobic surface silicone foam, in which a polished skinless one-stage vulcanized silicone foam is infiltrated by a hydrophobic modifier solution into the foam pore structure to produce a chemical reaction, and is completely formed after cleaning and two-stage vulcanization.
[0007] In some embodiments, a section of vulcanized silicone foam skin is polished with sandpaper to expose the internal pore structure, showing a distinct micro-nano hierarchical structure.
[0008] In some embodiments, the silicone foam includes component A and component B, wherein component A includes the following raw materials in parts by mass: 5-30 parts of vinyl silicone oil, 20-60 parts of 107 hydroxy silicone oil, 1-20 parts of low-viscosity hydroxy silicone oil, 1-35 parts of fumed silica, and 0.01-5 parts of platinum catalyst. Component B includes the following raw materials in parts by mass: 5-35 parts of vinyl silicone oil, 10-60 parts of 107 hydroxy silicone oil, 1-20 parts of hydrogenated silicone oil, 1-35 parts of fumed silica, and 0.1-1 parts of inhibitor (alkynol). The mass ratio of component A to component B is 1:1.
[0009] In the second aspect, the present invention also provides a method for preparing the above-mentioned stable super-hydrophobic silicone foam, which is characterized in that it includes the following steps: laminating the AB two-component silica gel mixture with a fluorine release film and then rolling out a sheet, then putting the sheet into an oven for a first-stage vulcanization foaming under heating conditions of 50-100°C for 5-30 minutes, then polishing with 300-mesh sandpaper, soaking in a hydrophobic modifier solution (solute to solvent ratio 1:10-1:50) for about 1h-24h, and then cleaning and two-stage vulcanization (vulcanization temperature 180-210°C, vulcanization time 1-5h) to obtain a stable silicone foam with a super-hydrophobic surface.
[0010] In some embodiments, the skinless silicone foam is prepared by the following process: Preparation of component A: Vinyl silicone oil, 107 hydroxy silicone oil, low-viscosity hydroxy silicone oil, fumed silica, and platinum catalyst are compounded and mixed evenly with a high-speed disperser to obtain component A; Preparation of component B: Vinyl silicone oil, 107 hydroxy silicone oil, hydrogen silicone oil, fumed silica and inhibitor are compounded and mixed evenly with a high-speed disperser to obtain component B; Mixing: Mix component A and component B in a mass ratio of 1:1; Calendering sheet: Spread the AB two-component rubber material evenly on the fluorine release film, cover it with another release film, use double rollers to calender the sheet, put it into the oven to heat and foam for a period of time, and you will get a section of vulcanized silicone foam.
[0011] In some embodiments, the viscosity of the component A is 10,000-50,000 cps, and the viscosity of the component B is 10,000-50,000 cps.
[0012] In some embodiments, the baking temperature of a section of vulcanized silicone foam is 50-100° C., and the vulcanization time is 5-30 min.
[0013] In some embodiments, the sandpaper used for polishing the skinless silicone foam has a mesh size of 100, 200, 300, or 500, preferably 300.
[0014] In some embodiments, the hydrophobic modifier is prepared by compounding a modifier and a solvent. The modifier is selected from a mixture of one or more of octadecyltrichlorosilane, hexadecyltrichlorosilane, dodecyltrichlorosilane, propyltrichlorosilane, octadecyltrimethoxysilane, hexadecyltrimethoxysilane, dodecyltrimethoxysilane and propyltrimethoxysilane. The solvent is mainly a mixture of one or more of ethyl acetate, N,N-dimethylformamide, ethanol and water.
[0015] In some embodiments, the immersion time in the hydrophobic modifier is 1 h to 24 h.
[0016] In some embodiments, the second stage vulcanization temperature is 180-210° C., and the vulcanization time is 1-5 hours.
[0017] In some embodiments, the mass fraction ratio of the modifier to the solvent in the hydrophobic modifier solution is 1:10-1:50.
[0018] In a third aspect, the present invention also provides the application of the above-mentioned stable super-hydrophobic silicone foam in the fields of anti-fouling and anti-icing.
[0019] The present application can prepare silicone foam sheets by calendering in batches, and polishing can reveal a hierarchical micro-nano rough structure. Combined with the treatment of hydrophobic modifiers, the hydrophobicity of the foam can be effectively improved, thereby exhibiting excellent super-hydrophobic properties. Its green, environmentally friendly and simple preparation process realizes silicone foam with a strong super-hydrophobic surface, which is expected to be applied in the fields of self-cleaning anti-fouling and anti-icing.
[0020] The beneficial effects of the technical solution provided by this application include: 1. The present application can prepare silicone foam sheets by calendering in batches, and polishing to reveal a hierarchical micro-nano rough structure. Combined with the treatment of a hydrophobic modifier, the hydrophobicity of the foam is effectively improved, giving the silicone material super-hydrophobic and lightweight properties. Its green, environmentally friendly and simple preparation process realizes the preparation of silicone foam with a solid super-hydrophobic surface layer, showing excellent super-hydrophobic properties.
[0021] 2. The silicone foam provided in this application has the advantages of silicone materials such as high and low temperature resistance and aging resistance, retains the light weight characteristics of the foaming material, and has a density of 0.25-0.5g / cm 3 , which solves the defects of self-cleaning and anti-icing capabilities of traditional silicone foam, and is suitable for self-cleaning, anti-fouling and anti-icing fields. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 This is a method for preparing a silicone foam with a stable super-hydrophobic surface layer and its application in Example 1 of the present application.
[0024] Specific implementation method In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0025] The embodiments of the present application provide a silicone foam with a stable super-hydrophobic surface layer to solve the problem in the related art that existing silicone super-hydrophobic materials cannot simultaneously meet the requirements of firmness, environmental protection, and lightness.
[0026] The present application provides a method for preparing a silicone foam with a stable super-hydrophobic surface layer, comprising the following steps: Preparation of component A: by weight, 5-30 parts of vinyl silicone oil, 20-60 parts of 107 hydroxy silicone oil, 1-20 parts of low-viscosity hydroxy silicone oil, 1-35 parts of fumed silica, and 0.1-5 parts of platinum catalyst are mixed uniformly to obtain component A; Preparation of component B: by weight, 5-35 parts of vinyl silicone oil, 10-60 parts of 107 hydroxy silicone oil, 1-20 parts of hydrogenated silicone oil, 1-35 parts of fumed silica, and 0.1-1 parts of inhibitor are mixed uniformly to obtain component B; Preparation of silicone foam: Mix component A and component B in a mass fraction of 1:1, pour the two-component silicone mixture on a fluorine release film, press it into a sheet after bonding, and then put the sheet into an oven for a first-stage vulcanization foaming at 50-100°C for 5-30 minutes, then polish it with 300-mesh sandpaper, soak it in a hydrophobic modifier solution (solute to solvent ratio 1:10-1:50) for about 1h-24h, and then wash and perform a second-stage vulcanization (vulcanization temperature 180-210°C, vulcanization time 1-5h) to obtain a stable silicone foam with a super-hydrophobic surface.
[0027] The preparation method of a silicone foam with a stable super-hydrophobic surface layer provided by the present application and its application are described in detail below in combination with embodiments and comparative examples.
[0028] Example 1: Preparation of component A: By mass, 15 parts of 5000cps vinyl silicone oil, 50 parts of 20000cps 107 hydroxy silicone oil, 10 parts of 50cps hydroxy silicone oil (hydroxyl content 4%), 25 parts of fumed silica, and 0.1 parts of platinum catalyst were mixed uniformly to obtain component A with a viscosity of 30000cps; Preparation of component B: by mass, 10 parts of 2000cps vinyl silicone oil, 60 parts of 20000cps 107 hydroxy silicone oil, 15 parts of hydrogenated silicone oil (hydrogen content 1%), 15 parts of fumed silica, and 1 part of inhibitor were mixed evenly to obtain component B with a viscosity of 20000cps; Preparation of silicone foam with super-hydrophobic surface: Mix component A and component B in a mass fraction of 1:1, pour the two-component silicone mixture on a fluorine release film, press it into a sheet after bonding, and then put the sheet into an oven for a first-stage vulcanization and foaming at 80°C for 5 minutes, then polish it with 300-mesh sandpaper, and soak it in a hydrophobic modifier solution for 1 hour, wherein the ratio of solute to solvent in the hydrophobic modifier is 1:20, and the solvent is water. Then, it is cleaned with ethanol and subjected to a second-stage vulcanization at a vulcanization temperature of 180°C and a vulcanization time of 1 hour to obtain a silicone foam with a stable surface super-hydrophobic.
[0029] Embodiment 2: The only difference between Example 2 and Example 1 is that the immersion time in the modifying liquid is changed from 1 hour to 6 hours.
[0030] Embodiment 3: The only difference between Example 3 and Example 1 is that the immersion time in the modification liquid is changed from 1 hour to 12 hours.
[0031] Embodiment 4: The only difference between Example 4 and Example 1 is that the immersion time in the modifying liquid is changed from 1 hour to 24 hours.
[0032] Embodiment 5: The difference between Example 5 and Example 1 is that the vulcanization time is changed from 5 min to 10 min.
[0033] Embodiment 6: The difference between Example 6 and Example 2 is that the vulcanization time is changed from 5 min to 10 min.
[0034] Embodiment 7: The difference between Example 7 and Example 3 is that the vulcanization time is changed from 5 min to 10 min.
[0035] Embodiment 8: The only difference between Example 8 and Example 4 is that the vulcanization time is changed from 5 min to 10 min.
[0036] Embodiment 9: The only difference between Example 9 and Example 1 is that the vulcanization time is changed from 5 min to 15 min.
[0037] Embodiment 10: The only difference between Example 10 and Example 2 is that the vulcanization time is changed from 5 min to 15 min.
[0038] Embodiment 11: The only difference between Example 11 and Example 3 is that the vulcanization time is changed from 5 min to 15 min.
[0039] Embodiment 12: The only difference between Example 12 and Example 4 is that the vulcanization time is changed from 5 min to 15 min.
[0040] Embodiment 13: The only difference between Example 13 and Example 1 is that the vulcanization time is changed from 5 min to 30 min.
[0041] Embodiment 14: The only difference between Example 14 and Example 2 is that the vulcanization time is changed from 5 min to 30 min.
[0042] Embodiment 15: The only difference between Example 15 and Example 3 is that the vulcanization time is changed from 5 min to 30 min.
[0043] Embodiment 16: The only difference between Example 16 and Example 4 is that the vulcanization time is changed from 5 min to 30 min.
[0044] Comparative Example 1: Preparation of component A: By mass, 20 parts of 5000cps vinyl silicone oil, 52 parts of 20000cps 107 hydroxy silicone oil, 8 parts of 50cps hydroxy silicone oil (hydroxyl content 4%), 20 parts of fumed silica, and 0.1 parts of platinum catalyst were mixed uniformly to obtain component A with a viscosity of 15000cps; Preparation of component B: by mass, 25 parts of 5000cps vinyl silicone oil, 40 parts of 20000cps 107 hydroxy silicone oil, 20 parts of hydrogenated silicone oil (hydrogen content 1%), 15 parts of fumed silica, and 1 part of inhibitor were mixed evenly to obtain component B with a viscosity of 18000cps; Preparation of silicone foam with super-hydrophobic surface: Mix component A and component B in a mass fraction of 1:1, pour the two-component silicone mixture on a fluorine release film, press it into a sheet after bonding, and then put the sheet into an oven for a first-stage vulcanization and foaming at 80°C for 15 minutes, then polish it with 300-mesh sandpaper, and soak it in a hydrophobic modifier solution for 12 hours, wherein the ratio of solute to solvent in the hydrophobic modifier is 1:20, and the solvent is water. Then, it is cleaned with ethanol and subjected to a second-stage vulcanization at a vulcanization temperature of 180°C and a vulcanization time of 1 hour to obtain a silicone foam with a stable surface super-hydrophobic.
[0045] Comparative Example 2: Preparation of component A: By mass, 10 parts of 5000cps vinyl silicone oil, 50 parts of 20000cps 107 hydroxy silicone oil, 15 parts of 50cps hydroxy silicone oil (hydroxyl content 4%), 25 parts of fumed silica, and 0.1 parts of platinum catalyst were mixed uniformly to obtain component A with a viscosity of 43000cps; Preparation of component B: by weight, 15 parts of 5000cps vinyl silicone oil, 45 parts of 20000cps 107 hydroxy silicone oil, 10 parts of hydrogenated silicone oil (hydrogen content 1%), 30 parts of fumed silica, and 1 part of inhibitor were mixed evenly to obtain component B with a viscosity of 48000cps; Preparation of silicone foam with super-hydrophobic surface: Mix component A and component B in a mass fraction of 1:1, pour the two-component silicone mixture on a fluorine release film, press it into a sheet after bonding, and then put the sheet into an oven for a first-stage vulcanization and foaming at 80°C for 15 minutes, then polish it with 300-mesh sandpaper, and soak it in a hydrophobic modifier solution for 12 hours, wherein the ratio of solute to solvent in the hydrophobic modifier is 1:20, and the solvent is water. Then, it is cleaned with ethanol and subjected to a second-stage vulcanization at a vulcanization temperature of 180°C and a vulcanization time of 1 hour to obtain a silicone foam with a stable surface super-hydrophobic.
[0046] Comparative Example 3: The only difference between Comparative Example 3 and Example 9 is that the treatment time of the modified soaking liquid is changed from 1 h to 0 h.
[0047] Comparative Example 4: Comparative Example 4 differs from Example 11 only in that the temperature of one stage of vulcanization is changed from 80°C to 50°C.
[0048] Comparative Example 5: The only difference between Comparative Example 5 and Comparative Example 11 is that the temperature of one stage of vulcanization is changed from 80°C to 100°C.
[0049] Table 1: Performance test results of epidermal super-hydrophobic silicone foams prepared in Examples 1-16 and Comparative Examples 1-5
[0050] As can be seen from Table 1, the density of the silicone foams prepared in Comparative Examples 3, 4, and 5 is similar, but the contact angles are 4>3>5, and the ice adhesion is 4<3<5. The results show that a certain curing temperature and a modified solution treatment are beneficial to improving the hydrophobic properties of the silicone foam. From the results of Examples 1-16, it can be seen that a suitable curing time, a certain curing temperature, and a modified solution treatment time are beneficial to constructing silicone foams with super-hydrophobic skins, which are suitable for anti-icing and inhibiting cracking at low temperatures, and the foams obtained in Examples 5-16 will not break even when bent at -55°C.
[0051] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, without contradiction. It should be noted that in this application, relational terms such as "first" and "second" etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the sentence "comprising one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements. In the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly specified. The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be obvious to those skilled in the art to make various modifications to these embodiments, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.
Claims
1. A stable super-hydrophobic surface silicone foam, characterized in that: After the first-stage vulcanized silicone foam is polished to have no skin, the hydrophobic modifier solution penetrates into the foam pore structure to cause a chemical reaction. The product after the reaction is cleaned and fully formed by the second-stage vulcanization to obtain a stable super-hydrophobic surface silicone foam.
2. The stable super-hydrophobic surface silicone foam according to claim 1, characterized in that: The raw materials of the organic silicone foam include component A and component B; The component A comprises the following raw materials in parts by mass: 5-30 parts of vinyl silicone oil, 20-60 parts of 107 hydroxy silicone oil, 1-20 parts of low-viscosity hydroxy silicone oil, 1-35 parts of fumed silica, and 0.01-5 parts of a platinum catalyst; The B component comprises the following raw materials in parts by mass: 5-35 parts of vinyl silicone oil, 10-60 parts of 107 hydroxy silicone oil, 1-20 parts of hydrogen-containing silicone oil, 1-35 parts of fumed silica, and 0.1-1 parts of an inhibitor.
3. The stable super-hydrophobic surface silicone foam according to claim 1, characterized in that: The hydrophobic modifier solution is prepared by compounding a modifier and a solvent; the modifier is a mixture of one or more selected from octadecyltrichlorosilane, hexadecyltrichlorosilane, dodecyltrichlorosilane, propyltrichlorosilane, octadecyltrimethoxysilane, hexadecyltrimethoxysilane, dodecyltrimethoxysilane and propyltrimethoxysilane; the solvent is a mixture of one or more selected from ethyl acetate, N,N-dimethylformamide, ethanol and water.
4. The method for preparing a stable super-hydrophobic silicone foam according to any one of claims 1 to 3, characterized in that: The following steps are involved: The AB two-component silicone mixture is laminated with a release film and then pressed into a sheet. The sheet is then placed in an oven for one-stage vulcanization and foaming under heating conditions, and then polished with sandpaper to obtain a skinless silicone foam. The skinless silicone foam is then immersed in a hydrophobic modifier solution, followed by cleaning and two-stage vulcanization to obtain a stable silicone foam with a super-hydrophobic surface.
5. The method for preparing a stable super-hydrophobic silicone foam according to claim 4, characterized in that: The skinless silicone foam is prepared by the following process: Preparation of component A: Vinyl silicone oil, 107 hydroxy silicone oil, low-viscosity hydroxy silicone oil, fumed silica, and platinum catalyst are compounded and mixed evenly with a high-speed disperser to obtain component A; Preparation of component B: Vinyl silicone oil, 107 hydroxy silicone oil, hydrogen silicone oil, fumed silica and inhibitor are compounded and mixed evenly with a high-speed disperser to obtain component B; Calendering: Spread the AB two-component rubber material evenly on the fluorine release film, cover it with another release film, use double rollers to calender the sheet, put it in an oven to heat and foam for a period of time, and then you will get a section of vulcanized silicone foam. Polishing: Polishing with sandpaper and blowing with compressed air can obtain the silicone foam without skin.
6. The method for preparing a stable super-hydrophobic silicone foam according to claim 5, characterized in that: The baking temperature of the first stage vulcanized silicone foam is 50-100℃, and the vulcanization time is 5-30min.
7. The method for preparing a stable super-hydrophobic silicone foam according to claim 5, characterized in that: The sandpaper used for polishing the skinless silicone foam may have any one of 100, 200, 300, and 500 meshes, preferably 300 meshes.
8. The method for preparing a stable super-hydrophobic silicone foam according to claim 4, characterized in that: The hydrophobic modifier is prepared by compounding a modifier and a solvent. The modifier is a mixture of one or more of octadecyltrichlorosilane, hexadecyltrichlorosilane, dodecyltrichlorosilane, propyltrichlorosilane, octadecyltrimethoxysilane, hexadecyltrimethoxysilane, dodecyltrimethoxysilane and propyltrimethoxysilane; The solvent is selected from a mixture of one or more of ethyl acetate, N,N-dimethylformamide, ethanol and water; The mass fraction ratio of the modifier to the solvent in the hydrophobic modifier solution is 1:10-1:50; The immersion time in the hydrophobic modifier is 1 hour to 24 hours.
9. The method for preparing a stable super-hydrophobic silicone foam according to claim 4, characterized in that: The second stage vulcanization temperature is 180-210℃, and the vulcanization time is 1-5h.
10. An anti-fouling and / or anti-icing material, characterized in that: The invention comprises the stable super-hydrophobic silicone foam as described in any one of claims 1 to 3 or the stable super-hydrophobic silicone foam prepared by the preparation method as described in any one of claims 4 to 9.