Wear-resistant super-hydrophobic material and preparation method thereof

Abstract

The invention discloses a wear-resistant super-hydrophobic material and a preparation method thereof, the wear-resistant super-hydrophobic material comprises a substrate layer, a waterproof glue layer, a super-hydrophobic porous cotton layer and a porous gridding cloth layer which are sequentially arranged from bottom to top, and the super-hydrophobic porous cotton layer is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton. The preparation method comprises the step of sequentially preparing the waterproof glue layer, the super-hydrophobic porous cotton layer and the porous gridding cloth layer on the substrate layer. The surface contact angle of the wear-resistant super-hydrophobic material is larger than 150 degrees, and the wear-resistant super-hydrophobic material keeps super-hydrophobicity after being rubbed by 800-mesh abrasive paper for 1300-2000 times, keeps super-hydrophobicity after being rubbed by glass for 700-1000 times, keeps super-hydrophobicity after being rubbed by an eraser for 800-1500 times, and keeps super-hydrophobicity after being rubbed by the eraser for 800-1500 times. The wear-resistant super-hydrophobic material has excellent super-hydrophobicity, and the surface wear resistance of the super-hydrophobic material can be greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of super hydrophobic materials and relates to a wear-resistant super hydrophobic material and a preparation method thereof. Background Art

[0002] Inspired by the lotus effect, super-hydrophobic surface materials with a contact angle with water greater than 150° have attracted widespread attention. On the surface of super-hydrophobic materials, it is difficult for water droplets or droplets with water as a solvent to stay or adhere stably. As long as the surface of the material is slightly tilted or under the action of a small external force, the droplets will quickly roll off the super-hydrophobic surface, taking away dust and other pollutants on the surface. Studies have shown that super-hydrophobic materials have excellent self-cleaning, waterproof, anti-pollution, anti-adhesion, anti-corrosion, anti-freezing and fluid drag reduction properties, and have extremely broad application prospects in various industries such as glass, construction, ships, cars, airplanes, clothes, shoes and hats, electronic products, packaging, agriculture, national defense, military industry and daily life.

[0003] However, a large number of experimental studies have shown that the wear resistance of the currently reported super-hydrophobic surfaces cannot meet the needs of practical applications. After the surface of most super-hydrophobic materials rubs against external substances 300-500 times, the hydrophobicity of the surface decreases significantly, and the super-hydrophobicity is lost. The poor wear resistance has caused the super-hydrophobic materials to fail to be applied on a large scale. This is because the preparation of super-hydrophobic surfaces usually requires the construction of certain micro-nano structures on the surface of the material. The micro-nano structures are exposed to the outside and are easily destroyed when they are scratched or rubbed by the outside world, resulting in the loss of super-hydrophobicity. Therefore, research and development of super-hydrophobic materials with strong wear resistance has become an international problem. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a wear-resistant superhydrophobic material having excellent superhydrophobicity and capable of greatly improving the wear resistance of the surface of the superhydrophobic material and a preparation method thereof.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0006] A wear-resistant super-hydrophobic material comprises a base layer, a waterproof adhesive layer, a super-hydrophobic porous cotton layer and a porous mesh cloth layer which are sequentially arranged from bottom to top; the super-hydrophobic porous cotton layer is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

[0007] The above-mentioned wear-resistant super-hydrophobic material, preferably, has a surface contact angle greater than 150°, the wear-resistant super-hydrophobic material maintains super-hydrophobicity after being rubbed 1300 to 2000 times with 800-mesh sandpaper, the wear-resistant super-hydrophobic material maintains super-hydrophobicity after being rubbed 700 to 1000 times with glass, the pressure borne by the glass surface is 2MPa to 10MPa, and the wear-resistant super-hydrophobic material maintains super-hydrophobicity after being rubbed 800 to 1500 times with an eraser.

[0008] The wear-resistant super-hydrophobic material is preferably prepared by spraying a mixture of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol on the porous cotton, wherein the porous cotton includes one of porous polyethylene cotton, porous natural fiber cotton and porous polyester cotton. The super-hydrophobic coating particles extend into the holes of the porous mesh cloth layer 4 and are exposed to the air.

[0009] The above-mentioned wear-resistant super-hydrophobic material is preferably such that the mass ratio of the nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 0.1-2:0.1-1:0.1-0.5:100, and the particle size of the nano-silicon dioxide is 10nm-500nm.

[0010] The above-mentioned wear-resistant super-hydrophobic material, preferably, the porous mesh cloth layer is composed of porous mesh cloth, the thickness of the porous mesh cloth layer is 0.01mm~1mm, the pore size of the porous mesh cloth is 0.01mm~1mm, and the distance between adjacent holes in the porous mesh cloth is less than 0.1mm.

[0011] The above-mentioned wear-resistant super-hydrophobic material, preferably, the porous mesh cloth includes one of a porous polyethylene mesh cloth and a porous polypropylene mesh cloth, and the hole shape of the porous mesh cloth includes a circular shape or a honeycomb shape.

[0012] The above-mentioned wear-resistant super-hydrophobic material, preferably, the base layer is composed of a base, and the base includes one of glass, ceramics, plastics, paper, cloth and metal; the waterproof adhesive layer is composed of waterproof adhesive, and the waterproof adhesive includes one of waterproof silicone, waterproof polyurethane adhesive and waterproof acrylic adhesive.

[0013] As a general technical concept, the present invention also provides a method for preparing the above-mentioned wear-resistant super-hydrophobic material, comprising the following steps:

[0014] S1, coating the waterproof adhesive on the base layer to obtain a waterproof adhesive layer;

[0015] S2, pasting the porous cotton on the waterproof adhesive layer, standing, then mixing and stirring nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol to obtain a nanoparticle dispersion solution, spraying the nanoparticle dispersion solution on the porous cotton, and after drying, obtaining a super-hydrophobic porous cotton layer;

[0016] S3. Cover the super-hydrophobic porous cotton layer with a porous mesh cloth, heat and pressurize at a temperature of 90°C to 150°C and a pressure of 2MPa to 10MPa, so that the porous mesh cloth is attached to the surface of the super-hydrophobic porous cotton layer to form a porous mesh cloth layer, and obtain a wear-resistant super-hydrophobic material.

[0017] The method for preparing the above-mentioned wear-resistant super-hydrophobic material is preferably such that in step S2, the spraying pressure is 1MPa to 10MPa, the spraying time is 0.1s to 10s, the spraying distance is 10cm to 80cm, and the particle size of the nanoparticles in the nanoparticle dispersion solution is 10nm to 100nm.

[0018] In the above-mentioned method for preparing the wear-resistant superhydrophobic material, preferably, in step S2, the standing temperature is room temperature, the standing time is 10 min to 30 min, the stirring time is 10 min to 30 min, the drying temperature is 80 to 100° C., and the drying time is 1 h to 5 h.

[0019] In the above-mentioned method for preparing the wear-resistant super-hydrophobic material, preferably, in step S3, the pressurizing time is 0.1s to 10s.

[0020] In the present invention, the thickness of the super-hydrophobic porous cotton layer, the waterproof adhesive layer, and the base layer is not limited and can be determined according to actual needs.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) in the wear-resistant super-hydrophobic material of the present invention, a layer of porous mesh cloth is provided on the surface of super-hydrophobic porous cotton layer (i.e., micro-nano structure super-hydrophobic surface), and the porous mesh cloth covers the upper layer of super-hydrophobic porous cotton, and when friction is produced with external substances, the external substances mainly rub with the porous mesh cloth layer of the most superficial layer, and the sharp substances directly rub against the super-hydrophobic porous cotton layer when the super-hydrophobic material surface is effectively reduced to be subjected to friction, thereby improving the surface wear resistance of the super-hydrophobic material; meanwhile, the holes of the porous mesh cloth expose the super-hydrophobic coating (or super-hydrophobic coating particles) of the super-hydrophobic porous cotton to the air, effectively ensuring the super-hydrophobicity of the material surface. By the protection of the porous mesh cloth, the micro-nano structure on the surface of the super-hydrophobic material is protected from direct friction or scratching from the outside world, but its excellent super-hydrophobicity can be maintained, thereby greatly improving the wear resistance of the surface of the super-hydrophobic material, showing a huge industrial application prospect. The wear-resistant super-hydrophobic material of the invention has excellent surface wear resistance, and still maintains super-hydrophobicity after being rubbed 1300 to 2000 times with 800-mesh sandpaper, still maintains super-hydrophobicity after being rubbed 700 to 1000 times with glass (the pressure borne on the glass surface is 2-10 MPa), and still maintains super-hydrophobicity after being rubbed 800 to 1500 times with an eraser.

[0023] (2) The preparation method of the wear-resistant super-hydrophobic material of the present invention has the advantages of being environmentally friendly, low-cost, simple and controllable process, and easy to realize industrial application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the cross-sectional structure of the wear-resistant super-hydrophobic material in Examples 1 to 5 of the present invention.

[0025] Figure 2 This is a surface contact angle test diagram of the wear-resistant super-hydrophobic material prepared in Example 1 of the present invention.

[0026] Figure 3 This is a surface contact angle test diagram of the wear-resistant super-hydrophobic material prepared in Example 2 of the present invention.

[0027] Figure 4 This is a surface contact angle test diagram of the wear-resistant super-hydrophobic material prepared in Example 3 of the present invention.

[0028] Figure 5 This is a surface contact angle test diagram of the wear-resistant super-hydrophobic material prepared in Example 4 of the present invention.

[0029] Figure 6 This is a surface contact angle test diagram of the wear-resistant super-hydrophobic material prepared in Example 5 of the present invention.

[0030] Legend:

[0031] 1. Base layer; 2. Waterproof adhesive layer; 3. Super hydrophobic porous cotton layer; 4. Porous mesh cloth layer. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby. The materials and instruments used in the following embodiments are all commercially available.

[0033] Example 1

[0034] A wear-resistant super-hydrophobic material of the present invention, such as Figure 1 As shown, it includes a base layer 1, a waterproof adhesive layer 2, a super-hydrophobic porous cotton layer 3 and a porous mesh cloth layer 4 which are arranged in sequence from bottom to top. The super-hydrophobic porous cotton layer 3 is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

[0035] In this embodiment, the super-hydrophobic coating is prepared by mixing nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and spraying the mixture on porous cotton, wherein the porous cotton is porous polyethylene cotton. The super-hydrophobic coating particles can extend into the holes of the porous mesh cloth layer 4 and be exposed to the air.

[0036] In this embodiment, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 0.1:0.1:0.1:100, and the particle size of nano-silicon dioxide is 10 nm.

[0037] In this embodiment, the porous mesh cloth layer 4 is composed of a porous mesh cloth, the thickness of the porous mesh cloth layer 4 is 1 mm, the aperture of the porous mesh cloth is 0.01 mm, the mesh holes of the porous mesh cloth are closely arranged, and the distance between adjacent holes is 0.08 mm.

[0038] In this embodiment, the porous mesh cloth is a porous polyethylene mesh cloth, and the holes are round holes.

[0039] In this embodiment, the base layer 1 is composed of a base, which is glass. The waterproof adhesive layer 2 is composed of a waterproof adhesive, which is waterproof silica gel.

[0040] In the present embodiment, the surface contact angle of the wear-resistant super-hydrophobic material is 156°, the contact angle of the wear-resistant super-hydrophobic material after rubbing 2000 times with 800 mesh sandpaper is 151°, the contact angle of the wear-resistant super-hydrophobic material after rubbing its surface 1000 times with glass (the pressure carried by the glass surface is 2MPa) is 153°, and the contact angle of the wear-resistant super-hydrophobic material after rubbing 1500 times with an eraser is 150°.

[0041] A method for preparing the wear-resistant super-hydrophobic material of the present embodiment comprises the following steps:

[0042] S1, coating the waterproof adhesive on the base layer 1 to obtain the waterproof adhesive layer 2;

[0043] S2, paste the porous cotton on the waterproof adhesive layer 2, let it stand at room temperature for 10 minutes, so that the porous cotton is tightly bonded to the waterproof adhesive layer 2, and then mix nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and stir for 10 minutes, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 0.1:0.1:0.1:100, and obtain a nanoparticle dispersion solution, the particle size of the nanoparticles in the nanoparticle dispersion solution is 10nm~100nm, and the nanoparticle dispersion solution is sprayed on the porous cotton, the spraying pressure is 8MPa, the spraying time is 0.2s, and the spraying distance is 60cm. After drying at 80℃ for 5 hours, super-hydrophobicity is obtained on the surface of the porous cotton, and a super-hydrophobic porous cotton layer 3 is obtained;

[0044] S3, covering the super-hydrophobic porous cotton layer 3 with a porous mesh cloth, heating and pressurizing for 0.1s at a temperature of 90°C and a pressure of 10MPa, so that the porous mesh cloth is attached to the surface of the super-hydrophobic porous cotton layer 3 to form a porous mesh cloth layer 4, and obtain a wear-resistant super-hydrophobic material. Figure 2 As shown in the figure, the surface contact angle of the wear-resistant super-hydrophobic material reaches 156°, the contact angle is 151° after rubbing 2000 times with 800 mesh sandpaper, the contact angle after rubbing 1000 times with glass (the pressure on the glass surface is 2MPa) on its surface is 153°, and the contact angle after rubbing 1500 times with an eraser is 150°.

[0045] Example 2

[0046] A wear-resistant super-hydrophobic material of the present invention, such as Figure 1 As shown, it includes a base layer 1, a waterproof adhesive layer 2, a super-hydrophobic porous cotton layer 3 and a porous mesh cloth layer 4 which are arranged in sequence from bottom to top. The super-hydrophobic porous cotton layer 3 is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

[0047] In this embodiment, the super-hydrophobic coating is prepared by mixing nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and spraying the mixture on porous cotton, which is porous natural fiber cotton. The super-hydrophobic coating particles can extend into the holes of the porous mesh cloth layer 4 and be exposed to the air.

[0048] In this embodiment, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 2:1:0.5:100, and the particle size of nano-silicon dioxide is 500 nm.

[0049] In this embodiment, the porous mesh cloth layer 4 is composed of a porous mesh cloth, the thickness of the porous mesh cloth layer 4 is 0.01 mm, the aperture of the porous mesh cloth is 1 mm, the mesh holes of the porous mesh cloth are closely arranged, and the distance between adjacent holes is 0.05 mm.

[0050] In this embodiment, the porous mesh cloth is a porous polyethylene mesh cloth, and the holes are honeycomb holes.

[0051] In this embodiment, the base layer 1 is composed of a base material, which is paper. The waterproof adhesive layer 2 is composed of a waterproof adhesive, which is a waterproof polyurethane adhesive.

[0052] In the present embodiment, the surface contact angle of the wear-resistant super-hydrophobic material is 159°, the contact angle of the wear-resistant super-hydrophobic material after rubbing 1600 times with 800 mesh sandpaper is 155°, the contact angle of the wear-resistant super-hydrophobic material after rubbing its surface 800 times with glass (the pressure carried on the glass surface is 5MPa) is 156°, and the contact angle of the wear-resistant super-hydrophobic material after rubbing 1200 times with an eraser is 155°.

[0053] A method for preparing the wear-resistant super-hydrophobic material of the present embodiment comprises the following steps:

[0054] S1, coating the waterproof adhesive on the base layer 1 to obtain the waterproof adhesive layer 2;

[0055] S2, paste the porous cotton on the waterproof adhesive layer 2, let it stand at room temperature for 30 minutes, so that the porous cotton is tightly bonded to the waterproof adhesive layer 2, and then mix nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and stir for 30 minutes, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 2:1:0.5:100, and obtain a nanoparticle dispersion solution, the particle size of the nanoparticles in the nanoparticle dispersion solution is 10nm~100nm, and the nanoparticle dispersion solution is sprayed on the porous cotton, the spraying pressure is 10MPa, the spraying time is 0.2s, and the spraying distance is 80cm. After drying at 100℃ for 1 hour, super-hydrophobicity is obtained on the surface of the porous cotton, and a super-hydrophobic porous cotton layer 3 is obtained;

[0056] S3, covering the super-hydrophobic porous cotton layer 3 with a porous mesh cloth, heating and pressurizing for 2s at a temperature of 110°C and a pressure of 2MPa, so that the porous mesh cloth is attached to the surface of the super-hydrophobic porous cotton layer 3 to form a porous mesh cloth layer 4, and obtain a wear-resistant super-hydrophobic material. Figure 3 As shown in the figure, the surface contact angle of the wear-resistant super-hydrophobic material reaches 159°, the contact angle is 155° after rubbing 1600 times with 800-mesh sandpaper, the contact angle after 800 times of rubbing with glass (the pressure on the glass surface is 5 MPa) on its surface is 156°, and the contact angle after rubbing 1200 times with an eraser is 155°.

[0057] Example 3

[0058] A wear-resistant super-hydrophobic material of the present invention, such as Figure 1As shown, it includes a base layer 1, a waterproof adhesive layer 2, a super-hydrophobic porous cotton layer 3 and a porous mesh cloth layer 4 which are arranged in sequence from bottom to top. The super-hydrophobic porous cotton layer 3 is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

[0059] In this embodiment, the super-hydrophobic coating is prepared by mixing nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and spraying the mixture on porous cotton, wherein the porous cotton is porous polyester cotton. The super-hydrophobic coating particles can extend into the holes of the porous mesh cloth layer 4 and be exposed to the air.

[0060] In this embodiment, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 1:0.5:0.5:100, and the particle size of nano-silicon dioxide is 100 nm.

[0061] In this embodiment, the porous mesh cloth layer 4 is composed of a porous mesh cloth, the thickness of the porous mesh cloth layer 4 is 0.05 mm, the aperture of the porous mesh cloth is 0.5 mm, the mesh holes of the porous mesh cloth are closely arranged, and the distance between adjacent holes is 0.02 mm.

[0062] In this embodiment, the porous mesh cloth is a porous polypropylene mesh cloth, and the holes are round holes.

[0063] In this embodiment, the base layer 1 is composed of a base material, which is polyester plastic. The waterproof adhesive layer 2 is composed of a waterproof adhesive, which is a waterproof acrylic adhesive.

[0064] In the present embodiment, the surface contact angle of the wear-resistant super-hydrophobic material is 157°, the contact angle of the wear-resistant super-hydrophobic material after rubbing 1300 times with 800 mesh sandpaper is 153°, the contact angle of the wear-resistant super-hydrophobic material after rubbing its surface 900 times with glass (the pressure carried on the glass surface is 4MPa) is 153°, and the contact angle of the wear-resistant super-hydrophobic material after rubbing 1000 times with an eraser is 152°.

[0065] A method for preparing the wear-resistant super-hydrophobic material of the present embodiment comprises the following steps:

[0066] S1, coating the waterproof adhesive on the base layer 1 to obtain the waterproof adhesive layer 2;

[0067] S2, paste the porous cotton on the waterproof adhesive layer 2, let it stand at room temperature for 20 minutes, so that the porous cotton is tightly bonded to the waterproof adhesive layer 2, and then mix nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and stir for 20 minutes, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 1:0.5:0.5:100, and obtain a nanoparticle dispersion solution, the particle size of the nanoparticles in the nanoparticle dispersion solution is 10nm~100nm, and the nanoparticle dispersion solution is sprayed on the porous cotton, the spraying pressure is 5MPa, the spraying time is 3s, and the spraying distance is 60cm. After drying at 90℃ for 3 hours, super-hydrophobicity is obtained on the surface of the porous cotton, and a super-hydrophobic porous cotton layer 3 is obtained;

[0068] S3, covering the super-hydrophobic porous cotton layer 3 with a porous mesh cloth, heating and pressurizing for 1 second at a temperature of 100°C and a pressure of 3MPa, so that the porous mesh cloth is attached to the surface of the super-hydrophobic porous cotton layer 3 to form a porous mesh cloth layer 4, and obtain a wear-resistant super-hydrophobic material. Figure 4 As shown in the figure, the surface contact angle of the wear-resistant super-hydrophobic material reaches 157°, and the contact angle is 153° after rubbing 1300 times with 800-mesh sandpaper; the contact angle after rubbing 900 times with glass (the pressure on the glass surface is 4 MPa) on its surface is 153°, and the contact angle after rubbing 1000 times with an eraser is 152°.

[0069] Example 4

[0070] A wear-resistant super-hydrophobic material of the present invention, such as Figure 1 As shown, it includes a base layer 1, a waterproof adhesive layer 2, a super-hydrophobic porous cotton layer 3 and a porous mesh cloth layer 4 which are arranged in sequence from bottom to top. The super-hydrophobic porous cotton layer 3 is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

[0071] In this embodiment, the super-hydrophobic coating is prepared by mixing nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and spraying the mixture on porous cotton, wherein the porous cotton is porous polyethylene cotton. The super-hydrophobic coating particles can extend into the holes of the porous mesh cloth layer 4 and be exposed to the air.

[0072] In this embodiment, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 1.5:0.6:0.3:100, and the particle size of nano-silicon dioxide is 50 nm.

[0073] In this embodiment, the porous mesh cloth layer 4 is composed of a porous mesh cloth, the thickness of the porous mesh cloth layer 4 is 0.02 mm, the aperture of the porous mesh cloth is 0.8 mm, the mesh holes of the porous mesh cloth are closely arranged, and the distance between adjacent holes is 0.03 mm.

[0074] In this embodiment, the porous mesh cloth is a porous polypropylene mesh cloth, and the holes are round holes.

[0075] In this embodiment, the base layer 1 is composed of a base material, which is a natural fiber cloth. The waterproof adhesive layer 2 is composed of a waterproof adhesive, which is a waterproof acrylic adhesive.

[0076] In the present embodiment, the surface contact angle of the wear-resistant super-hydrophobic material is 155°, the contact angle of the wear-resistant super-hydrophobic material after rubbing 1800 times with 800 mesh sandpaper is 152°, the contact angle of the wear-resistant super-hydrophobic material after rubbing its surface 900 times with glass (the pressure carried by the glass surface is 3MPa) is 152°, and the contact angle of the wear-resistant super-hydrophobic material after rubbing 900 times with an eraser is 152°.

[0077] A method for preparing the wear-resistant super-hydrophobic material of the present embodiment comprises the following steps:

[0078] S1, coating the waterproof adhesive on the base layer 1 to obtain the waterproof adhesive layer 2;

[0079] S2, paste the porous cotton on the waterproof adhesive layer 2, let it stand at room temperature for 15 minutes, so that the porous cotton is tightly bonded to the waterproof adhesive layer 2, and then mix nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and stir for 15 minutes, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 1.5:0.6:0.3:100, and obtain a nanoparticle dispersion solution, the particle size of the nanoparticles in the nanoparticle dispersion solution is 10nm~100nm, and the nanoparticle dispersion solution is sprayed on the porous cotton, the spraying pressure is 6MPa, the spraying time is 5s, and the spraying distance is 50cm. After drying at 90℃ for 4 hours, super-hydrophobicity is obtained on the surface of the porous cotton, and a super-hydrophobic porous cotton layer 3 is obtained;

[0080] S3, covering the super-hydrophobic porous cotton layer 3 with a porous mesh cloth, heating and pressurizing for 2s at a temperature of 100°C and a pressure of 5MPa, so that the porous mesh cloth is attached to the surface of the super-hydrophobic porous cotton layer 3 to form a porous mesh cloth layer 4, and obtain a wear-resistant super-hydrophobic material. Figure 5 As shown in the figure, the surface contact angle of the wear-resistant super-hydrophobic material reaches 155°, the contact angle is 152° after rubbing 1800 times with 800-mesh sandpaper, the contact angle after rubbing 900 times with glass (the pressure on the glass surface is 3 MPa) on its surface is 152°, and the contact angle after rubbing 900 times with an eraser is 152°.

[0081] Example 5

[0082] A wear-resistant super-hydrophobic material of the present invention, such as Figure 1As shown, it includes a base layer 1, a waterproof adhesive layer 2, a super-hydrophobic porous cotton layer 3 and a porous mesh cloth layer 4 which are arranged in sequence from bottom to top. The super-hydrophobic porous cotton layer 3 is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

[0083] In this embodiment, the super-hydrophobic coating is prepared by mixing nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and spraying the mixture on porous cotton, wherein the porous cotton is porous polyethylene cotton. The super-hydrophobic coating particles can extend into the holes of the porous mesh cloth layer 4 and be exposed to the air.

[0084] In this embodiment, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 1:0.8:0.2:100, and the particle size of nano-silicon dioxide is 90 nm.

[0085] In this embodiment, the porous mesh cloth layer 4 is composed of a porous mesh cloth, the thickness of the porous mesh cloth layer 4 is 0.05 mm, the aperture of the porous mesh cloth is 0.05 mm, the mesh holes of the porous mesh cloth are closely arranged, and the distance between adjacent holes is 0.01 mm.

[0086] In this embodiment, the porous mesh cloth is a porous polyethylene mesh cloth, and the holes are honeycomb holes.

[0087] In this embodiment, the base layer 1 is composed of a base, which is ceramic. The waterproof adhesive layer 2 is composed of a waterproof adhesive, which is waterproof silica gel.

[0088] In the present embodiment, the surface contact angle of the wear-resistant super-hydrophobic material is 153°, the contact angle of the wear-resistant super-hydrophobic material after rubbing 1500 times with 800 mesh sandpaper is 153°, the contact angle of the wear-resistant super-hydrophobic material after rubbing its surface with glass (the pressure carried by the glass surface is 10MPa) for 700 times is 151°, and the contact angle of the wear-resistant super-hydrophobic material after rubbing 800 times with an eraser is 150°.

[0089] A method for preparing the wear-resistant super-hydrophobic material of the present embodiment comprises the following steps:

[0090] S1, coating the waterproof adhesive on the base layer 1 to obtain the waterproof adhesive layer 2;

[0091] S2, paste the porous cotton on the waterproof adhesive layer 2, let it stand at room temperature for 25 minutes, so that the porous cotton is tightly bonded to the waterproof adhesive layer 2, and then mix nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and stir for 20 minutes, the mass ratio of nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 1:0.8:0.2:100, and obtain a nanoparticle dispersion solution, the particle size of the nanoparticles in the nanoparticle dispersion solution is 10nm~100nm, and the nanoparticle dispersion solution is sprayed on the porous cotton, the spraying pressure is 3MPa, the spraying time is 8s, and the spraying distance is 60cm. After drying at 90℃ for 5 hours, super-hydrophobicity is obtained on the surface of the porous cotton, and a super-hydrophobic porous cotton layer 3 is obtained;

[0092] S3, covering the super-hydrophobic porous cotton layer 3 with a porous mesh cloth, heating and pressurizing for 3s at a temperature of 100°C and a pressure of 8MPa, so that the porous mesh cloth is attached to the surface of the super-hydrophobic porous cotton layer 3 to form a porous mesh cloth layer 4, and obtain a wear-resistant super-hydrophobic material. Figure 6 As shown, the surface contact angle of the wear-resistant super-hydrophobic material reaches 153°. After rubbing with 800-mesh sandpaper for 1500 times, the contact angle is 153°. After rubbing with glass (the pressure on the glass surface is 10 MPa) on its surface for 700 times, the contact angle is 151°. After rubbing with an eraser for 800 times, the contact angle is 150°.

[0093] Comparative Example 1

[0094] A super-hydrophobic material and preparation method thereof, substantially the same as Example 1, difference only in that: porous mesh cloth layer 4 is not covered on super-hydrophobic porous cotton layer 3. The surface contact angle of the super-hydrophobic material of this comparative example is 158 °, and the contact angle drops to 143 ° after rubbing 150 times with 800 mesh sandpaper, and drops to 128 ° after rubbing 500 times with 800 mesh sandpaper, and drops to 135 ° after rubbing 200 times with glass (the pressure carried by glass surface is 3MPa), and drops to 131 ° after rubbing 300 times with eraser. Experimental result shows, embodiment 1 has stronger wear resistance than comparative example 1.

[0095] Comparative Example 2

[0096] A super-hydrophobic material and preparation method thereof, substantially the same as Example 2, difference only in that: the super-hydrophobic porous cotton layer 3 is not provided with porous mesh cloth layer 4. The surface contact angle of the super-hydrophobic material of this comparative example is 159 °, and the contact angle drops to 145 ° after rubbing 150 times with 800 mesh sandpaper, drops to 122 ° after rubbing 500 times with 800 mesh sandpaper, drops to 132 ° after rubbing 200 times with glass (the pressure carried by the glass surface is 5MPa), and drops to 123 ° after rubbing 300 times with eraser. Experimental result shows, embodiment 2 has stronger wear resistance than comparative example 2.

[0097] Comparative Example 3

[0098] A super-hydrophobic material and preparation method thereof, substantially the same as Example 3, difference only in that: porous mesh cloth layer 4 is not arranged on super-hydrophobic porous cotton layer 3.The surface contact angle of the super-hydrophobic material of this comparative example is 158 °, and the contact angle drops to 139 ° after rubbing 150 times with 800 mesh sandpaper, and drops to 108 ° after rubbing 500 times with 800 mesh sandpaper, and drops to 115 ° after rubbing 200 times with glass (the pressure carried by glass surface is 4MPa), and drops to 116 ° after rubbing 300 times with eraser.Experimental result shows, embodiment 3 has stronger wear resistance than comparative example 3.

[0099] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention, still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A wear-resistant super-hydrophobic material, characterized in that: The wear-resistant super-hydrophobic material comprises a base layer (1), a waterproof adhesive layer (2), a super-hydrophobic porous cotton layer (3) and a porous mesh cloth layer (4) which are arranged in sequence from bottom to top, and the super-hydrophobic porous cotton layer (3) is composed of porous cotton and a super-hydrophobic coating arranged on the porous cotton.

2. The wear-resistant super-hydrophobic material according to claim 1, characterized in that: The surface contact angle of the wear-resistant super-hydrophobic material is greater than 150°, the wear-resistant super-hydrophobic material maintains super-hydrophobicity after being rubbed with 800-mesh sandpaper for 1300 to 2000 times, the wear-resistant super-hydrophobic material maintains super-hydrophobicity after being rubbed with glass for 700 to 1000 times, the pressure borne by the glass surface is 2MPa to 10MPa, and the wear-resistant super-hydrophobic material maintains super-hydrophobicity after being rubbed with an eraser for 800 to 1500 times.

3. The wear-resistant super-hydrophobic material according to claim 1 or 2, characterized in that: The super hydrophobic coating is prepared by mixing nano silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol and then spraying the mixture on the porous cotton. The porous cotton includes one of porous polyethylene cotton, porous natural fiber cotton and porous polyester cotton.

4. The wear-resistant super-hydrophobic material according to claim 3, characterized in that: The mass ratio of the nano silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol is 0.1-2:0.1-1:0.1-0.5:100, and the particle size of the nano silicon dioxide is 10nm-500nm.

5. The wear-resistant super-hydrophobic material according to claim 1 or 2, characterized in that: The porous mesh cloth layer (4) is composed of a porous mesh cloth, the thickness of the porous mesh cloth layer (4) is 0.01 mm to 1 mm, the pore size of the porous mesh cloth is 0.01 mm to 1 mm, and the distance between adjacent holes in the porous mesh cloth is less than 0.1 mm.

6. The wear-resistant super-hydrophobic material according to claim 5, characterized in that: The porous mesh cloth includes one of a porous polyethylene mesh cloth and a porous polypropylene mesh cloth, and the hole shape of the porous mesh cloth includes a circular shape or a honeycomb shape.

7. The wear-resistant super-hydrophobic material according to claim 1 or 2, characterized in that: The base layer (1) is composed of a base, and the base includes one of glass, ceramics, plastic, paper, cloth and metal; the waterproof adhesive layer (2) is composed of waterproof adhesive, and the waterproof adhesive includes one of waterproof silica gel, waterproof polyurethane adhesive and waterproof acrylic adhesive.

8. A method for preparing a wear-resistant super-hydrophobic material as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, coating the waterproof adhesive on the base layer (1) to obtain a waterproof adhesive layer (2); S2, pasting the porous cotton on the waterproof adhesive layer (2), leaving it to stand, then mixing and stirring nano-silicon dioxide, stearic acid, dimethyl silicone oil and anhydrous ethanol to obtain a nanoparticle dispersion solution, spraying the nanoparticle dispersion solution on the porous cotton, and after drying, obtaining a super-hydrophobic porous cotton layer (3); S3. Cover the super-hydrophobic porous cotton layer (3) with a porous mesh cloth, and heat and pressurize the super-hydrophobic porous cotton layer (3) at a temperature of 90° C. to 150° C. and a pressure of 2 MPa to 10 MPa, so that the porous mesh cloth adheres to the surface of the super-hydrophobic porous cotton layer (3) to form a porous mesh cloth layer (4), thereby obtaining a wear-resistant super-hydrophobic material.

9. The method for preparing the wear-resistant super-hydrophobic material according to claim 8, characterized in that: In step S2, the spraying pressure is 1 MPa to 10 MPa, the spraying time is 0.1 s to 10 s, the spraying distance is 10 cm to 80 cm, and the particle size of the nanoparticles in the nanoparticle dispersion solution is 10 nm to 100 nm.

10. The method for preparing the wear-resistant super-hydrophobic material according to claim 8 or 9, characterized in that: In step S2, the standing temperature is room temperature, the standing time is 10 min to 30 min, the stirring time is 10 min to 30 min, the drying temperature is 80 to 100° C., and the drying time is 1 h to 5 h; In step S3, the pressurization time is 0.1s to 10s.

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