Self-cleaning anti-skid sole combining bionic microstructure design and super-hydrophobic coating
By combining biomimetic microstructure design with a superhydrophobic coating, the self-cleaning and non-slip sole uses V-shaped drainage grooves and sharkskin-scale-like raised arrays to solve the problems of decreased anti-slip performance of traditional soles in wet environments and the need for manual intervention in cleaning. It achieves dynamic drainage and self-removal of dirt, thus improving the user experience.
Patent Information
- Application Number
- CN202520510398.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-22
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-03-22
AI Technical Summary
Traditional shoe soles lose their anti-slip performance in wet environments. Existing hydrophobic coatings lack synergistic design with the sole tread pattern, resulting in performance degradation after long-term wear and tear. Furthermore, cleaning requires manual intervention, leading to a poor user experience.
Combining biomimetic microstructure design with superhydrophobic coating, a V-shaped flow-guiding groove array and a shark-skin scale protrusion array are used to enhance drainage performance through fine microstructure design, and a superhydrophobic layer is formed on the surface to achieve dynamic drainage and self-removal of dirt.
It achieves long-lasting anti-slip and self-cleaning properties on the soles in wet environments, with significant dynamic drainage, reducing water film residue and improving user experience.
Smart Images
Figure CN223653324U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the sole technical field especially relates to a self -cleaning antiskid sole of combining bionic microstructure design and super hydrophobic coating. BACKGROUND
[0002] Traditional sole antiskid design is mostly dependent on macroscopic lines (such as wave shape, sawtooth shape), but in humid, muddy environment, it is easy to cause antiskid failure due to water retention or dirt retention. Although the existing hydrophobic coating technology (such as fluorocarbon resin spraying) can reduce water stain adhesion, the coating and sole lines lack collaborative design, and the performance decreases obviously after long-term wear. In addition, the sole cleaning needs manual intervention, and the user experience is poor. Based on this, the utility model provides a self -cleaning antiskid sole of combining bionic microstructure design and super hydrophobic coating, which realizes dynamic drainage, dirt self -shedding and long -term antiskid through the synergistic effect of bionic microstructure super hydrophobic coating, and makes up for the deficiency of prior art. SUMMARY
[0003] The utility model aims at providing a self -cleaning antiskid sole of combining bionic microstructure design and super hydrophobic coating, to solve the above -mentioned problems.
[0004] To solve the above technical problem, the utility model adopts the following technical scheme:
[0005] The utility model discloses a self -cleaning antiskid sole of combining bionic microstructure design and super hydrophobic coating, including the wear -resistant layer that prevents skidding, the buffer shock -absorbing layer and the connecting adaptation layer that set gradually from outside to inside, the wear -resistant layer that prevents skidding is integrally formed with the V -shaped flow guide groove array and the sharkskin scale convex array of interval distribution on the outer surface, the V -shaped flow guide groove array and the sharkskin scale convex array parallel distribution, the wear -resistant layer that prevents skidding includes gradually from outside to inside the super hydrophobic layer, the intermediate reinforcing layer, the plasma processing layer,
[0006] The V-shaped flow guide groove array is composed of a plurality of first connected V-shaped flow guide grooves, and the angle between adjacent V-shaped flow guide grooves is 30°.
[0007] The sharkskin scale convex array is composed of a plurality of equidistantly distributed sharkskin scale convexes, and the bottom surface of the sharkskin scale convex is provided with a radial microgroove.
[0008] Further, the connecting adaptation layer is provided with a protective skirt around.
[0009] Further, the roughness Ra of the inner side wall of the V-shaped flow guide groove is 0.2-0.5 μm.
[0010] Further, the depth of the radial microgroove is 50 μm.
[0011] Further, the V-shaped flow guide groove has a depth of 1.2-1.5 mm and a width of 0.8-1.2 mm.
[0012] Further, the interval between adjacent V-shaped flow guide grooves is 3-4 mm.
[0013] Further, the shark-skin-slice-imitating protrusion is a semispherical protrusion with a diameter of 0.5 mm and a height of 0.3 mm.
[0014] Further, the interval between adjacent shark-skin-slice-imitating protrusions is 1.5±0.2 mm.
[0015] Further, the super-hydrophobic layer has a static contact angle of ≥155° and a rolling angle of ≤5°.
[0016] Compared with the prior art, the self-cleaning and anti-skid shoe sole with the bionic microstructure design and the super-hydrophobic coating has the beneficial technical effects that:
[0017] The self-cleaning and anti-skid shoe sole with the bionic microstructure design and the super-hydrophobic coating of the utility model enhances the drainage performance of the shoe sole through fine microstructure design. When the shoe sole contacts the ground and is extruded, the water flow in the V-shaped flow guide groove is quickly guided away along the direction of the V shape. This design not only accelerates the water flow speed but also effectively reduces the residual water film on the shoe sole. In addition, the staggered arrangement of adjacent V-shaped flow guide grooves and the nanoscale roughness of the inner wall increase the turbulent disturbance of the water flow, which helps to break the continuity of the water film and further promotes drainage. The shark-skin-slice-imitating protrusions and the radial microgroove structures on the surfaces of the shark-skin-slice-imitating protrusions distributed in the gap area between the V-shaped flow guide grooves further accelerate the drainage process and reduce the water retention on the surface of the shoe sole by breaking the continuity of the water film. The super-hydrophobic layer greatly reduces the contact area with the surface of the shoe sole, thereby reducing the adhesion. In summary, the self-cleaning and anti-skid shoe sole with the bionic microstructure design and the super-hydrophobic coating realizes dynamic drainage, self-shedding of dirt and long-term anti-skid through the synergistic effect of the bionic microstructure super-hydrophobic coating. BRIEF DESCRIPTION OF DRAWINGS
[0018] The utility model will be further described below in combination with the drawings.
[0019] Figure 1 It is the sectional view of the self-cleaning and anti-skid shoe sole with the bionic microstructure design and the super-hydrophobic coating of the utility model.
[0020] Figure 2 It is the bottom view of the self-cleaning and anti-skid shoe sole with the bionic microstructure design and the super-hydrophobic coating of the utility model.
[0021] Figure 3 It is the distribution structure diagram of the V-shaped flow guide groove and the shark-skin-slice-imitating protrusion.
[0022] Figure 4 A cross-sectional view of the V-shaped flow guide groove;
[0023] Figure 5 A cross-sectional view of the protruding scales resembling shark skin;
[0024] Figure 6 This is a cross-sectional view of the anti-slip and wear-resistant layer;
[0025] Figure 7 This is a schematic diagram of the static contact angle of a water droplet on the sole surface of a shoe.
[0026] Figure 8 A schematic diagram showing the rolling angle of a water droplet on the sole surface;
[0027] Explanation of reference numerals in the attached diagram: 1. Anti-slip and wear-resistant layer; 2. Cushioning and shock-absorbing layer; 3. Connecting and fitting layer; 4. V-shaped flow guide groove; 5. Shark skin scale protrusions;
[0028] 101. Superhydrophobic layer; 102. Intermediate reinforcement layer; 103. Plasma-treated layer;
[0029] 501. Radial microgrooves. Detailed Implementation
[0030] like Figures 1-8 As shown, a self-cleaning, anti-slip shoe sole combining biomimetic microstructure design and a superhydrophobic coating includes, from the outside to the inside, an anti-slip and abrasion-resistant layer 1, a cushioning and shock-absorbing layer 2, and a connecting and fitting layer 3. The anti-slip and abrasion-resistant layer 1 is made by mixing high-hardness neoprene rubber (Shore hardness 80-85) with abrasion-resistant particles with a particle size of 0.5-1mm in a 9:1 ratio, manufactured through a compression molding process, resulting in a uniform distribution of the abrasion-resistant particles. The cushioning and shock-absorbing layer 2 is made using a physical foaming process to produce foamed rubber, with internal air bubble diameters controlled to 1-3mm. This structure can efficiently absorb the impact force on the feet during walking, reducing pressure on the knees and spine. The connecting and fitting layer 3 uses a viscosity index of 8-9 N / cm². 2 The soft natural rubber material serves to create a tight and stable connection with the upper and replaceable sole components, ensuring the stability of the entire shoe structure.
[0031] The connecting and fitting layer 3 is provided with a protective skirt around its perimeter, which is about 3-5mm high and made of elastic rubber. The protective skirt has a Shore hardness of 60-65. When subjected to a 5-6N lateral impact force, it can effectively buffer and protect the internal structure of the sole. That is, on the one hand, it can prevent damage to the sole caused by lateral collisions during walking, and on the other hand, when the shoe is subjected to a certain degree of compression, the elastic skirt can deform appropriately to play a buffering role.
[0032] like Figure 2 , 3As shown, the outer surface of the anti-skid wear-resistant layer 1 is integrally formed with a V-shaped flow guide groove array and a sharkskin-like scale protrusion array distributed at intervals, and the V-shaped flow guide groove array and the sharkskin-like scale protrusion array are distributed in parallel. The V-shaped flow guide groove array is composed of a plurality of first connected V-shaped flow guide grooves 4, and the angle between adjacent V-shaped flow guide grooves 4 is 30°. This design is based on bionics (such as the surface grooves of lotus leaves) and the directional flow theory in fluid mechanics (referring to the theoretical system of guiding fluid 'liquid or gas' to flow in a specific direction through material surface design, structure optimization or external force regulation). The roughness Ra of the inner wall of the V-shaped flow guide groove 4 is 0.2-0.5 μm, which is a nanoscale roughness, further enhancing the capillary drainage effect. The depth of the V-shaped flow guide groove 4 is 1.2-1.5 mm, the width is 0.8-1.2 mm, and the distance between adjacent V-shaped flow guide grooves 4 is 3-4 mm.
[0033] The sharkskin-like scale protrusion array is composed of a plurality of equidistantly distributed sharkskin-like scale protrusions 5, and the bottom surface of the sharkskin-like scale protrusion 5 is provided with a radial micro groove 501. The depth of the radial micro groove 501 is 50 μm (such as Figure 5 As shown, through water flow continuity test, the water film continuity damage degree can reach more than 80%, and the drainage is accelerated. The sharkskin-like scale protrusion 5 is a semispherical protrusion, the diameter is 0.5 mm, the height is 0.3 mm, and the distance between adjacent sharkskin-like scale protrusions 5 is 1.5±0.2 mm.
[0034] The sharkskin-like scale protrusion array is strictly distributed in the gap area of the V-shaped flow guide groove array, and the distance is equal to the width of the groove, forming a groove-protrusion alternating topological structure, realizing the multi-functional collaborative optimization of friction, heat transfer and fluid. In summary, the core of the V-shaped flow guide groove array design is to enhance the drainage performance of the shoe sole through fine microstructure design, mainly reflected in:
[0035] 1) Dynamic drainage: when the shoe sole is in contact with the ground and is extruded, the water flow in the V-shaped flow guide groove 4 will be quickly guided away along the V-shaped direction. This design not only speeds up the water flow, but also effectively reduces the water film residue on the shoe sole.
[0036] 2) Turbulent disturbance: the staggered arrangement of adjacent V-shaped flow guide grooves 4 and the nanoscale roughness of the inner wall increase the turbulent disturbance of the water flow when passing through, which helps to destroy the continuity of the water film and further promotes drainage.
[0037] 3) Combined protrusion structure: the sharkskin-like scale protrusion 5 and the radial micro groove 501 structure on its surface distributed in the gap area of the V-shaped flow guide groove 4 further accelerate the drainage process by destroying the continuity of the water film and reducing the water retention on the surface of the shoe sole.
[0038] AsFigure 6 As shown, the anti-skid wear-resistant layer 1 comprises, from the outside to the inside, a super-hydrophobic layer 101, an intermediate reinforcing layer 102, and a plasma treatment layer 103. The process treatment process is as follows: first, the surface of the shoe sole is subjected to plasma treatment for 15-20 minutes to form active groups, enhance the adhesion of the coating, and form the plasma treatment layer 103; then, an epoxy resin-based coating containing silica nanoparticles (particle size 30-40 nm) is sprayed to a thickness of 50-60 μm, filling the microstructure gap and improving wear resistance, thereby constituting the intermediate reinforcing layer 102; finally, a fluorocarbon polymer film is generated on the surface by chemical vapor deposition (CVD) method, with a thickness of 1.5 μm, a static contact angle of ≥155°, and a rolling angle of ≤5°, thereby achieving super-hydrophobic effect and forming the super-hydrophobic layer 101.
[0039] When the static contact angle is greater than 150°, the material is considered to have super-hydrophobic properties. In the present utility model (as shown in Figure 7 ), the fluorocarbon polymer film generated on the surface of the shoe sole by chemical vapor deposition (CVD) method achieves a static contact angle of ≥155°, which means that when the water droplet contacts the surface of the shoe sole, it will form a nearly spherical droplet, greatly reducing the contact area with the surface of the shoe sole and thus reducing the adhesion.
[0040] The smaller the rolling angle, the easier the droplet rolls on the inclined surface when the rolling angle is ≤5°. In the present utility model (as shown in Figure 8 ), the rolling angle is controlled at 4°, which means that even if the shoe sole is slightly inclined, the water droplet can quickly roll off and will not be left behind.
[0041] The above-described embodiments are only to describe the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various modifications and improvements to the technical solutions of the present utility model made by those skilled in the art shall fall within the protection scope determined by the claims of the present utility model.
Claims
1. A self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating, characterized in that: It includes an anti-slip and wear-resistant layer (1), a buffer and shock-absorbing layer (2), and a connecting and fitting layer (3) arranged sequentially from the outside to the inside; the outer surface of the anti-slip and wear-resistant layer (1) is integrally formed with an array of V-shaped flow-guiding grooves and an array of shark skin scale protrusions distributed at intervals, and the array of V-shaped flow-guiding grooves and the array of shark skin scale protrusions are distributed in parallel; the anti-slip and wear-resistant layer (1) includes a superhydrophobic layer (101), an intermediate reinforcing layer (102), and a plasma treatment layer (103) arranged sequentially from the outside to the inside; The V-shaped flow guide groove array is composed of a number of V-shaped flow guide grooves (4) connected end to end, and the angle between adjacent V-shaped flow guide grooves (4) is 30°; The sharkskin scale protrusion array consists of several equally spaced sharkskin scale protrusions (5), and the bottom surface of the sharkskin scale protrusions (5) is provided with radial microgrooves (501).
2. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The connecting adapter layer (3) is provided with protective skirts around its perimeter.
3. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The roughness Ra of the inner wall of the shaped flow guide groove (4) is 0.2-0.5μm.
4. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The depth of the radial microgrooves (501) is 50 μm.
5. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The depth of the V-shaped flow guide groove (4) is 1.2-1.5mm and the width is 0.8-1.2mm.
6. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The spacing between adjacent V-shaped flow guide grooves (4) is 3-4 mm.
7. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The sharkskin-like scale protrusion (5) is a hemispherical protrusion with a diameter of 0.5 mm and a height of 0.3 mm.
8. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The distance between adjacent sharkskin scale protrusions (5) is 1.5 ± 0.2 mm.
9. The self-cleaning, non-slip shoe sole combining biomimetic microstructure design and superhydrophobic coating as described in claim 1, characterized in that: The superhydrophobic layer (101) has a static contact angle ≥155° and a roll-off angle ≤5°.