High-stability super-hydrophobic micron tubular rough structure

Abstract

The utility model provides a high-stability super-hydrophobic micron tubular rough structure, and belongs to the technical field of super-hydrophobic materials. The super-hydrophobic micron tubular rough structure comprises a base; the super-sparse coarse structure comprises a plurality of tubular structures arranged on the base, and a hollow inner cavity is formed in the side, away from the base, of each tubular structure; the tubular structure is a super-hydrophobic tubular structure or a non-super-hydrophobic tubular structure, and when the tubular structure is the non-super-hydrophobic tubular structure, a super-hydrophobic layer is arranged on the surface of the tubular structure. The tubular structure is arranged to be the hollow structure, when the super-hydrophobic rough structure has hydrophobic or oleophobic performance, the hollow structure is beneficial to improving water or oil puncture resistance and water or oil abrasion resistance, and then the water (oil) pressure resistance, water (oil) impact resistance and water (oil) abrasion resistance of the micron tubular rough structure are improved; and therefore, the self-cleaning anti-fouling anti-icing anti-drag drag reducer has better use benefits and longer service life in the aspects of self-cleaning, anti-fouling, anti-corrosion, anti-icing and anti-drag.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of super-hydrophobic materials, and particularly relates to a high-stability super-hydrophobic microporous tubular rough structure. BACKGROUND

[0002] Ceramics, metals, organic polymers and other materials are widely used in life. Since most of them have inherent hydrophilicity (oleophilicity), the materials are prone to contamination, corrosion, icing and ice covering, thereby reducing the use efficiency of the materials and shortening the service life of the materials.

[0003] With the application of laser etching technology and 3D printing technology in the field of hydrophobic rough structure design, the currently designed hydrophobic (oleophobic) structures include grid-shaped, mushroom-shaped array, lotus-leaf-imitated papillary structure, etc.

[0004] Furthermore, the hydrophobic (oleophobic) property of the rough structure can be effectively improved by constructing super-hydrophobic functional groups on the surface of the rough structure or by coating a super-hydrophobic material on the surface of the rough structure. However, the hydrophobic (oleophobic) functional layer is prone to be punctured by water (oil) and abraded by water (oil) pressure during use, so that the hydrophobic (oleophobic) effect of the super-hydrophobic functional layer is gradually lost after a certain period of use, which greatly affects the use efficiency of the rough structure. CONTENT OF THE INVENTION

[0005] The present disclosure aims to at least solve one of the technical problems existing in the prior art, and provides a high-stability super-hydrophobic microporous tubular rough structure.

[0006] The present disclosure provides a high-stability super-hydrophobic microporous tubular rough structure, comprising a base;

[0007] The super-hydrophobic rough structure comprises a plurality of tubular structures arranged on the base, and the tubular structures have hollow cavities on the side away from the base;

[0008] The tubular structures are super-hydrophobic tubular structures or non-super-hydrophobic tubular structures, and a super-hydrophobic layer is arranged on the surface of the tubular structures when the tubular structures are non-super-hydrophobic tubular structures.

[0009] Optionally, when the tubular structures are super-hydrophobic tubular structures, the super-hydrophobic tubular structures are hydrophobic tubular structures, oleophobic tubular structures or dual-super-hydrophobic tubular structures.

[0010] Optionally, when the tubular structures are non-super-hydrophobic tubular structures, a hydrophobic layer, an oleophobic layer or a dual-super-hydrophobic layer is arranged on the surface of the tubular structures.

[0011] Optionally, the hydrophobic layer is a hydrophobic coating layer or a hydrophobic functional group layer.

[0012] Optionally, the plurality of tubular structures are arranged in an array or in a non-array arrangement.

[0013] Optionally, the inner diameter length of the tubular structure is 5-100 μm.

[0014] Optionally, the height of the tubular structure is 1-10 times of the inner diameter.

[0015] Optionally, the inner diameter of the hollow inner cavity is 10-90% of the inner diameter of the tubular structure.

[0016] Optionally, the base comprises a plurality of support portions, and each of the support portions is provided with one of the tubular structures, and the cross-sectional area of the tubular structure is 5%-60% of the cross-sectional area of the support portion.

[0017] Optionally, the cross section of the tubular structure is in the shape of a circular ring, a ring-shaped polygon, an outer circular inner polygon, or an inner circular outer polygon.

[0018] The present disclosure provides a high-stable super-hydrophobic micrometer tubular rough structure, comprising: a base; a super-hydrophobic rough structure comprising a plurality of tubular structures arranged on the base, the tubular structure having a hollow inner cavity on the side away from the base; the tubular structure is a super-hydrophobic tubular structure or a non-super-hydrophobic tubular structure, and when the tubular structure is a non-super-hydrophobic tubular structure, a super-hydrophobic layer is arranged on the surface of the tubular structure. By arranging the tubular structure as a hollow structure, when the super-hydrophobic rough structure has hydrophobic or oleophobic properties, the hollow structure helps to improve the water or oil puncture and water or oil abrasion resistance, thereby improving the water (oil) pressure resistance, water (oil) impact resistance, and water (oil) abrasion resistance of the micrometer tubular rough structure, and making it have better use efficiency and service life in terms of self-cleaning, anti-fouling, anti-corrosion, anti-icing, and drag reduction. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of a high-stable super-hydrophobic micrometer tubular rough structure according to an embodiment of the present disclosure;

[0020] Figure 2 FIG. 2 is a structural schematic diagram of a super-hydrophobic micrometer tubular rough structure according to an embodiment of the present disclosure;

[0021] Figure 3 FIG. 3 is a structural schematic diagram of a super-hydrophobic micrometer tubular rough structure according to an embodiment of the present disclosure;

[0022] Figure 4 FIG. 4 is a structural schematic diagram of a super-hydrophobic micrometer tubular rough structure according to an embodiment of the present disclosure;

[0023] Figure 5 FIG. 5 is a structural schematic diagram of a super-hydrophobic micrometer tubular rough structure according to an embodiment of the present disclosure;

[0024] Figure 6 FIG. 6 is a structural schematic diagram of a super-hydrophobic micrometer tubular rough structure according to an embodiment of the present disclosure.

[0025] Figure 7 Structure diagram of the super-hydrophobic micrometer tubular rough structure of Example 6 of the present disclosure;

[0026] Figure 8 Structure diagram of the super-hydrophobic micrometer tubular rough structure of Comparative Example 1 of the present disclosure;

[0027] Figure 9 Structure diagram of the super-hydrophobic micrometer tubular rough structure of Comparative Example 2 of the present disclosure;

[0028] Figure 10 Structure diagram of the super-hydrophobic micrometer tubular rough structure of Comparative Example 3 of the present disclosure. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present disclosure.

[0030] In some descriptions of the present disclosure, the terms "comprising" or "including" and the like do not limit the mentioned shapes, numbers, steps, actions, operations, components, elements and / or their groups, nor exclude the presence or addition of one or more other different shapes, numbers, steps, actions, operations, components, elements and / or their groups.

[0031] In some descriptions of the present disclosure, the terms "mounting", "connecting", "connecting" or "fixing" and the like are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect through intermediate media, can be the internal communication of two elements or the interaction relationship between two elements.

[0032] In some descriptions of the present disclosure, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to represent the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] As Figures 1 to 7As shown, the present disclosure proposes a high-stability super-hydrophobic microporous tubular rough structure 100, comprising: a base 110 and a super-hydrophobic rough structure; wherein the super-hydrophobic rough structure comprises a plurality of tubular structures 120 arranged on the base, and the side of the tubular structure 120 away from the base 110 has a hollow inner cavity 121; and the tubular structure 120 can be a super-hydrophobic tubular structure or a non-super-hydrophobic tubular structure, and when the tubular structure 120 is a non-super-hydrophobic tubular structure, a super-hydrophobic layer is arranged on the surface of the tubular structure 120. That is, when the tubular structure is a super-hydrophobic tubular structure, the super-hydrophobic tubular structure forms a super-hydrophobic rough structure, and when the tubular structure is a non-super-hydrophobic tubular structure, the non-super-hydrophobic tubular structure and the super-hydrophobic layer on the surface thereof form a super-hydrophobic rough structure.

[0034] In the present embodiment, by arranging the side of the tubular structure away from the low resistance as a hollow structure, when the super-hydrophobic rough structure has hydrophobic and / or oleophobic properties, the hollow structure helps to improve the water or oil puncture and water or oil wear resistance, thereby improving the water (oil) pressure resistance, water (oil) impact resistance, and water (oil) wear resistance of the microporous tubular rough structure, and making it have better use efficiency and service life in terms of self-cleaning, anti-fouling, anti-corrosion, anti-icing / icing, and drag reduction.

[0035] It should be noted that the super-hydrophobic microporous tubular rough structure of the present embodiment can realize super-hydrophobicity, super-oleophobicity, or super-hydrophobic and super-oleophobic properties, and no specific limitation is made thereon, and it can be set according to actual needs. Based on the super-hydrophobic rough structure, the water (oil) puncture and water (oil) wear resistance can be improved.

[0036] In some preferred embodiments, the super-hydrophobic tubular structure is a hydrophobic tubular structure, an oleophobic tubular structure, or a dual-super-hydrophobic tubular structure. That is, the tubular structure can be formed of a hydrophobic material, an oleophobic material, or a dual-super-hydrophobic material, so that the tubular structure itself has hydrophobicity, oleophobicity, or dual-super-hydrophobic properties, and can be specifically set according to actual needs.

[0037] It should be noted that the super-hydrophobic tubular structure of the present embodiment can be formed of a hydrophobic, oleophobic, or dual-super-hydrophobic metal material, a high polymer material, an inorganic non-metal (ceramic) material, a metal matrix composite material, a high polymer matrix composite material, a ceramic matrix composite material, etc.

[0038] It should be understood that when the tubular structure is a non-super-hydrophobic tubular structure, a hydrophobic layer, an oleophobic layer, or a dual-super-hydrophobic layer needs to be arranged on the surface of the tubular structure, so that the super-hydrophobic rough structure has hydrophobicity, oleophobicity, or dual-super-hydrophobic properties, and has better water puncture and water wear resistance.

[0039] In some preferred embodiments, the hydrophobic layer is a hydrophobic coating layer or a hydrophobic functional group layer. That is, a hydrophobic coating can be coated on the surface of the tubular structure to form a hydrophobic coating layer, or a hydrophobic functional group can be constructed on the surface of the tubular structure to form a hydrophobic functional group layer, thereby reducing the surface energy of the rough structure.

[0040] In some other preferred embodiments, the oleophobic layer is an oleophobic coating layer or an oleophobic functional group layer.

[0041] In some other preferred embodiments, the amphiphobic layer is a hydrophobic and oleophobic coating layer.

[0042] It should be further noted that the present embodiment does not make specific limitations on the arrangement of the plurality of tubular structures, and the plurality of tubular structures can be arranged in an array or non-array, as long as the rough structure is formed by arranging the plurality of tubular structures on the base. The plurality of tubular structures can be arranged at equal intervals or at unequal intervals, and the super-hydrophobic microporous tubular rough structure is formed by the plurality of tubular structures with hollow cavities, thereby effectively improving the hydrophobicity, oleophobicity or amphiphobicity of the material.

[0043] It should be further noted that the present embodiment does not make specific limitations on the shape of the tubular structure, which can be circular, polygonal or the like. Similarly, the hollow cavity can also be circular, polygonal or the like, and the shape of the hollow cavity and the tubular structure can be the same or different.

[0044] In some preferred embodiments, when the tubular structure and the hollow cavity are circular, the cross section is a circular ring; or when the tubular structure and the hollow cavity are polygonal (for example, quadrilateral, pentagon, hexagon or the like), the cross section is a corresponding ring-shaped polygon; or when the tubular structure is circular and the hollow cavity is polygonal, the cross section is an outer circle and an inner polygon; or when the tubular structure is polygonal and the hollow cavity is circular, the cross section is an inner circle and an outer polygon.

[0045] In some other preferred embodiments, the inner diameter of the tubular structure is 5-100 μm. It should be noted that the inner diameter referred to herein refers to the radial length of the cross section of the tubular structure. For example, when the tubular structure is circular, the inner diameter thereof should be the diameter of the cross section, i.e., the length of the diameter is 5-100 μm. For another example, when the tubular structure is polygonal, the inner diameter thereof should be the maximum radial length of the cross section, i.e., the maximum radial length is 5-100 μm. Specifically, when the tubular structure is a regular quadrilateral, the inner diameter thereof is the maximum radial length of the quadrilateral, i.e., the length of the diagonal; and when the tubular structure is a regular hexagon, the inner diameter thereof is the maximum radial length of the hexagon, i.e., the length of the line connecting two opposite vertices.

[0046] In some preferred embodiments, the hollow inner cavity 121 has an inner diameter of 10-90% of the inner diameter of the tubular structure 120, for example, when the inner diameter of the tubular structure is 5-100 μm, the inner diameter of the hollow inner cavity can be preferably 0.5-90 μm. That is, the length of the inner diameter of the hollow inner cavity accounts for 10-90% of the total length of the inner diameter of the tubular structure.

[0047] In some preferred embodiments, the height of the tubular structure is 1-10 times of its inner diameter. For example, when the inner diameter of the tubular structure is 5-100 μm, its height is preferably 5-1000 μm.

[0048] It should be understood that when a plurality of tubular structures are arranged on the base, the base should correspondingly include a plurality of support portions, each support portion corresponding to each tubular structure one by one, and each support portion is provided with one tubular structure, and the cross-sectional area of the tubular structure is 5%-60% of the cross-sectional area of each support portion.

[0049] It should still be noted that the material of the base of the present embodiment can be the same as or different from the material of the tubular structure, for example, one of metal material, polymer material, inorganic non-metal (ceramic) material, metal matrix composite material, polymer matrix composite material, ceramic matrix composite material, etc.

[0050] It should still be noted that the super-hydrophobic micrometer tubular rough structure of the present embodiment can be sequentially constructed from bottom to top by laser etching technology and 3D printing technology to build the base and the micrometer tubular rough structure, and by selecting the material of the tubular rough structure, the micrometer tubular rough structure can be hydrophobic, oleophobic, or hydrophobic and oleophobic.

[0051] Compared with ordinary rough structures, the micrometer tubular rough structure of the present disclosure has better water puncture and water wear resistance, effectively improves the compression resistance, impact resistance and wear resistance of the micrometer rough structure, and can improve the water (oil) puncture resistance, water (oil) pressure resistance and water (oil) wear resistance of the super-hydrophobic (oleophobic) functional layer on the surface of ceramic, metal, organic polymer and other materials, so as to have better use efficiency and service life in self-cleaning, anti-fouling, anti-corrosion, anti-icing, and drag reduction.

[0052] The super-hydrophobic micrometer tubular rough structure with high stability will be further described below in combination with specific embodiments:

[0053] Embodiment 1

[0054] As Figure 1 and Figure 2As shown, the highly stable ultra-hydrophobic micro-tube rough structure 100 includes: a base 110 and an ultra-hydrophobic rough structure; wherein, the ultra-hydrophobic rough structure includes a plurality of tubular structures 120 arranged in an array on the base, and each tubular structure 120 has a hollow inner cavity 121 on the side opposite to the base 110; wherein, the tubular structure 120 is a superhydrophobic tubular structure, that is, the tubular structure is formed of a hydrophobic material and has superhydrophobic properties, and its cross-section is annular, forming an annular tubular rough structure, that is, both the tubular structure and the hollow inner cavity are circular.

[0055] As shown in Table 1, the inner diameters of the hollow cavity and the tubular structure are 3.000 μm and 6.340 μm, respectively. The height of the tubular structure is 20 μm, and its cross-sectional area accounts for 50% of the cross-sectional area of ​​the base support. Based on this structure, the water droplet penetration depth is 0.0018530 μm, and the maximum surface stress is 10.696 MPa.

[0056] As shown in Table 1, the inner diameters of the hollow cavity and the tubular structure are 2.324 μm and 4.911 μm, respectively. The height of the tubular structure is 20 μm, and its cross-sectional area accounts for 30% of the cross-sectional area of ​​the base support. Based on this structure, the water droplet penetration depth is 0.0032334 μm, and the maximum surface stress is 18.538 MPa.

[0057] Example 2

[0058] like Figure 3 As shown, the highly stable ultra-hydrophobic micro-tube rough structure 100 includes: a base 110 and an ultra-hydrophobic rough structure; wherein, the ultra-hydrophobic rough structure includes a plurality of tubular structures 120 arranged in an array on the base, and each tubular structure 120 has a hollow inner cavity 121 on the side opposite to the base 110; wherein, the tubular structure 120 is a superhydrophobic tubular structure, that is, the tubular structure is formed of a hydrophobic material and has superhydrophobic properties, and its cross-section is an annular quadrilateral, forming a loop-shaped tubular rough structure, that is, the annular structure and the hollow inner cavity are quadrilaterals.

[0059] As shown in Table 1, the inner diameters of the hollow cavity and the tubular structure are 4.950 μm and 14.850 μm, respectively. The height of the tubular structure is 20 μm, and the cross-sectional area of ​​the tubular structure accounts for 50% of the cross-sectional area of ​​the base support. Based on this structure, the water droplet penetration depth is 0.0016882 μm, and the maximum surface stress is 13.913 MPa.

[0060] In which, as shown in Table 1, the inner diameter of the hollow cavity and the inner diameter of the tubular structure are 3.834 μm and 11.502 μm respectively, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 30% of the cross-sectional area of the base support. Based on this structure, the water droplet penetration depth is 0.0033749 μm, and the maximum surface stress is 26.243 MPa.

[0061] Example 3

[0062] As shown in Figure 4 , the high-stability super-hydrophobic microporous tubular rough structure 100 comprises a base 110 and a super-hydrophobic rough structure; wherein the super-hydrophobic rough structure comprises a plurality of arrayed tubular structures 120 arranged on the base, and the tubular structure 120 has a hollow cavity 121 on the side away from the base 110; wherein the tubular structure 120 is a super-hydrophobic tubular structure, i.e., the tubular structure is formed of a hydrophobic material and has super-hydrophobic properties, and the cross-section of the tubular structure is a ring-shaped hexagon, i.e., the ring structure and the hollow cavity are hexagonal.

[0063] Example 4

[0064] As shown in Figure 5 , the high-stability super-hydrophobic microporous tubular rough structure 100 comprises a base 110 and a super-hydrophobic rough structure; wherein the super-hydrophobic rough structure comprises a plurality of arrayed tubular structures 120 arranged on the base, and the tubular structure 120 has a hollow cavity 121 on the side away from the base 110; wherein the tubular structure 120 is a super-hydrophobic tubular structure, i.e., the tubular structure is formed of a hydrophobic material and has super-hydrophobic properties, and the cross-section of the tubular structure is a ring-shaped hexagon, i.e., the ring structure and the hollow cavity are hexagonal.

[0065] It should be noted that the above-mentioned examples 1-4 are all taken as examples of the tubular structure as a super-hydrophobic tubular structure, of course, the tubular structure can also be a super-oil-repellent tubular structure, and the tubular structure can also be a super-hydrophobic and super-oil-repellent tubular structure, the structure is the same, only the material is different, which will not be listed one by one here.

[0066] Example 5

[0067] As shown in Figure 6As shown, a highly stable ultrahydrophobic micro-tube roughened structure 100 includes a base 110 and an ultrahydrophobic roughened structure. The ultrahydrophobic roughened structure includes multiple tubular structures 120 arranged in an array on the base and a hydrophobic layer 130 disposed on the surface of the tubular structures. Each tubular structure 120 has a hollow inner cavity 121 on the side opposite to the base 110. The tubular structure 120 is a non-superhydrophobic tubular structure, meaning it is formed of a non-hydrophobic material and has a cross-section of a ring-shaped quadrilateral; that is, both the ring-shaped structure and the hollow inner cavity are quadrilaterals. Furthermore, the hydrophobic layer 130 is a hydrophobic functional group layer, meaning hydrophobic functional groups are constructed on the surface of the tubular structure to form a hydrophobic functional group layer.

[0068] Example 6

[0069] like Figure 7 As shown, the highly stable ultrahydrophobic micro-tubular roughened structure 100 includes a base 110 and an ultrahydrophobic roughened structure. The ultrahydrophobic roughened structure includes a plurality of tubular structures 120 arranged in an array on the base and a hydrophobic layer 130 disposed on the tubular structures. Each tubular structure 120 has a hollow inner cavity 121 on the side opposite to the base 110. The tubular structure 120 is a non-ultrahydrophobic tubular structure, meaning it is formed of a non-hydrophobic material and has a cross-section of a ring-shaped quadrilateral; that is, both the ring-shaped structure and the hollow inner cavity are quadrilaterals. Furthermore, the hydrophobic layer 130 is a hydrophobic coating layer, meaning a hydrophobic coating is applied to the surface of the tubular structure to form a hydrophobic coating layer.

[0070] It should be noted that the above embodiments 5-6 are all illustrated with the example of a non-superhydrophobic tubular structure and a hydrophobic superhydrophobic layer. Of course, the tubular structure can also be a non-superoleophobic tubular structure and an oleophobic superhydrophobic layer. Furthermore, the tubular structure can also be a non-superhydrophobic and oleophobic tubular structure and a hydrophobic and oleophobic superhydrophobic layer. The structure is the same, only the materials are different, and they will not be listed one by one here.

[0071] Comparative Example 1

[0072] like Figure 8 As shown, the superhydrophobic micro-tubular rough structure 100 includes: a base 110 and a superhydrophobic rough structure; wherein, the superhydrophobic rough structure includes a plurality of tubular structures 120 arranged in an array on the base. The tubular structure 120 is a superhydrophobic tubular structure, that is, the tubular structure is formed of a hydrophobic material and has superhydrophobic properties. Its cross-section is circular, forming a cylindrical tubular rough structure.

[0073] As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa.

[0074] As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa.

[0075] Comparative Example 2

[0076] As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa. Figure 9 As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa.

[0077] As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa.

[0078] As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa.

[0079] Comparative Example 3

[0080] As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa. Figure 10 As shown in Table 1, the cross-sectional diameter of the tubular structure is 5.585 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support portion. Based on this structure, the water droplet penetration depth is 0.0023046 μm, and the maximum surface stress is 18.907 MPa.

[0081] In the structure, as shown in Table 1, the cross-sectional side length of the tubular structure is 9.900 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 50% of the cross-sectional area of the base support part. Based on the structure, the water droplet penetration depth is 0.0019637 μm, and the maximum surface stress is 33.688 MPa.

[0082] In the structure, as shown in Table 1, the cross-sectional side length of the tubular structure is 7.668 μm, the height of the tubular structure is 20 μm, and the cross-sectional area of the tubular structure accounts for 30% of the cross-sectional area of the base support part. Based on the structure, the water droplet penetration depth is 0.0036835 μm, and the maximum surface stress is 62.951 MPa.

[0083] Table 1: Tubular structure parameters and super-hydrophobic performance results of each example and comparative example

[0084]

[0085] In summary, according to the results of Examples 1-2 and Comparative Examples 1-3, it can be seen that when the tubular structure is provided with a hollow inner cavity, the hydrophobicity of the tubular structure is improved. When the inner diameter length of the tubular structure is close, compared with the solid tubular structure, the water droplet penetration depth of the rough structure with a hollow inner cavity is significantly reduced, and the maximum surface stress of the tubular structure with a hollow inner cavity is also significantly reduced, which indicates that the tubular rough structure has better water pressure resistance, water puncture resistance and water abrasion resistance than other conventional rough structures.

[0086] It can be understood that the above embodiments are only exemplary embodiments adopted for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Various modifications and improvements can be made by those of ordinary skill in the art without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also considered to be within the protection scope of the present disclosure.

Claims

1. A highly stable super-hydrophobic micrometer tubular rough structure, characterized in that, The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure.

2. The highly stable superomniphobic micrometer-tubular rough structure according to claim 1, characterized in that, The application relates to a super-hydrophobic and super-oleophobic rough structure.

3. The highly stable superamphiphobic micrometer tubular rough structure according to claim 1, characterized in that, The application relates to a super-hydrophobic and super-oleophobic rough structure.

4. The highly stable superamphiphobic micrometer tubular rough structure according to claim 3, characterized in that, The application relates to a super-hydrophobic and super-oleophobic rough structure.

5. The highly stable superamphiphobic micrometer-tubular rough structure according to claim 1, wherein The application relates to a super-hydrophobic and super-oleophobic rough structure.

6. The highly stable superamphiphobic micrometer-tubular rough structure according to claim 1, wherein The application relates to a super-hydrophobic and super-oleophobic rough structure.

7. The highly stable superamphiphobic micrometer tubular rough structure according to claim 6, characterized in that, The application relates to a super-hydrophobic and super-oleophobic rough structure.

8. The highly stable superamphiphobic micrometer tubular rough structure according to claim 6, wherein, The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough structure. The application relates to a super-hydrophobic and super-oleophobic rough

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