Automobile fast curing antifouling coating film with super-hydrophobic performance

Abstract

The invention provides an automobile fast curing antifouling coating film with super-hydrophobic performance, and relates to the field of automobile coating films, the automobile fast curing antifouling coating film comprises a hydrophobic antifouling layer, a position limiting braid layer, a fast curing layer, a first reinforcing structure, a second reinforcing structure, a storage structure, a pressure-sensitive adhesive layer and release paper; the position limiting woven layer is laminated and compounded on the lower surface of the hydrophobic antifouling layer; the rapid curing layer is adhered to the lower surface of the position limiting braid layer; the first reinforcing structure is arranged above the position limiting braid layer; the storage structure is arranged below the hydrophobic antifouling layer; the pressure-sensitive adhesive layer is adhered to the lower surface of the rapid curing layer; the release paper is adhered to the lower surface of the pressure-sensitive adhesive layer; the second reinforcing structure is arranged below the hydrophobic antifouling layer, so that the situation that the curing speed of a coating film deviates when the laminating pressure of the coating film is inconsistent is avoided, and the laminating efficiency is improved; the problem that the laminating pasting efficiency is affected due to deviation of the curing speed of the adhesive caused by uneven pressure is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive film coating, and particularly to a fast-curing anti-fouling film for automobiles with superhydrophobic performance. Background Art

[0002] Automobiles are long-term exposed to complex and changeable external environments and are extremely vulnerable to various stains such as dust, rain, bird droppings, and tree sap. Some stains are corrosive. If they adhere to the car paint surface for a long time, they will cause the car paint to fade and lose its luster. In order to improve the service life of the car paint, a protective film needs to be pasted on the vehicle body.

[0003] For example, CN109852272B discloses an automotive paint protection film. The automotive paint protection film includes a transparent support body. A self-healing layer and a transparent release film are sequentially provided on one optical surface of the transparent support body; an assembly adhesive and a semi-transparent release film are sequentially provided on the other optical surface of the transparent support body. The self-healing layer is formed by coating a self-healing coating solution and then curing it by heating. The components and their weight parts of the self-healing coating solution are: modified polyol resin 30-50, curing agent 10-25, reactive leveling agent 0.5-2.5, metal dryer 0.2-0.5, and organic solvent 25-60. The automotive paint protection film provided by the present invention has durable self-healing property, yellowing resistance, anti-fouling property, and acid and alkali resistance, and can be applied to the field of paint protection on the surface of automobiles.

[0004] However, it is very difficult to ensure uniform fitting pressure on the entire film surface during the process of manually pasting the automotive protective film. Uneven pressure will cause deviation in the curing speed of the adhesive, and it is easy to occur that the edge part of the film cures quickly and the middle part cures slowly, which affects the pasting efficiency of the film. Summary of the Invention

[0005] In view of this, the present invention provides a fast-curing anti-fouling film for automobiles with superhydrophobic performance, which can significantly improve the tensile resistance of the film, making the film not easily break when subjected to external force pulling, improving the service life of the film, improving the protection performance of the car paint, and at the same time being able to adapt to the complex curved surface shape of the vehicle body, not easily appearing wrinkles or fractures, and being able to endow the film with a powerful self-cleaning ability, enabling the water droplets falling on the vehicle body to roll off quickly, and the water droplets can take away the dust and other fine particles adhering to the film surface while rolling. Under the action of the superhydrophobic performance and surface structure of the film, stains such as bird droppings and tree sap are difficult to penetrate and adhere when contacting the film surface, effectively improving the anti-fouling effect of the film, enhancing the bonding strength between the layers of the film, effectively reducing the situation of delamination of the film, being able to quickly cure the fast-curing layer, effectively avoiding the deviation of the film curing speed when the film fitting pressure is inconsistent, ensuring the uniformity of the film curing speed, and improving the pasting efficiency of the film.

[0006] The present invention provides a fast-curing antifouling film for automobiles with superhydrophobic properties, which specifically includes: a hydrophobic antifouling layer, a position-limiting woven layer, a fast-curing layer, a first strengthening structure, a second strengthening structure, a storage structure, a pressure-sensitive adhesive layer, and a release paper; the position-limiting woven layer is laminated and compounded on the lower surface of the hydrophobic antifouling layer; the fast-curing layer is pasted on the lower surface of the position-limiting woven layer; the first strengthening structure is arranged above the position-limiting woven layer; the storage structure is arranged below the hydrophobic antifouling layer; the pressure-sensitive adhesive layer is pasted on the lower surface of the fast-curing layer; the release paper is pasted on the lower surface of the pressure-sensitive adhesive layer; the second strengthening structure is arranged below the hydrophobic antifouling layer.

[0007] Further, the first strengthening structure includes an anti-fracture woven mesh; the anti-fracture woven mesh is arranged in the middle of the hydrophobic antifouling layer, and the anti-fracture woven mesh is woven from aramid fibers.

[0008] Further, the position-limiting woven layer is woven from polyester fibers; the fast-curing layer is made of acrylate resin; the thickness of the hydrophobic antifouling layer is between five and fifteen microns, the thickness of the fast-curing layer is between ten and thirty microns, and the thickness of the pressure-sensitive adhesive layer is between five and ten microns.

[0009] Further, the hydrophobic antifouling layer is made of a superhydrophobic material. Add fluoropolymer and silicone polymer into a reaction kettle, stir evenly at a temperature of fifty to eighty degrees Celsius, and then add nano-silica particles and nano-titanium dioxide particles in sequence, and continue to stir for thirty to sixty minutes to make the particles evenly dispersed in the polymer system to make a superhydrophobic material. The surface of the hydrophobic antifouling layer has a large number of tiny protrusions and depressions.

[0010] Further, the first strengthening structure further includes an arch-shaped connecting groove; there are multiple arch-shaped connecting grooves, and multiple arch-shaped connecting grooves are evenly distributed and opened in the lower part of the hydrophobic antifouling layer.

[0011] Further, the storage structure includes polylactic acid microcapsules; there are multiple polylactic acid microcapsules, and multiple polylactic acid microcapsules are evenly distributed and fixedly connected in the middle of the position-limiting woven layer. The inner sides of multiple polylactic acid microcapsules are respectively filled with acrylate resin or a catalyst.

[0012] Further, the second strengthening structure includes liquid penetration through holes; there are multiple liquid penetration through holes, and multiple liquid penetration through holes are evenly distributed and opened in the middle of the fast-curing layer.

[0013] Further, the second reinforcing structure further includes a limiting connection groove; there are a plurality of the limiting connection grooves, and the plurality of the limiting connection grooves are uniformly distributed and opened on the upper part of the pressure-sensitive adhesive layer.

[0014] Beneficial effects The anti-fracture woven net and the position-limiting woven layer of the present invention can significantly improve the tensile resistance of the film, making the film not easily broken when subjected to external pulling force, increasing the service life of the film, improving the protection performance for vehicle paint, and at the same time being able to adapt to the complex curved surface shape of the vehicle body, not easily showing wrinkles or fractures. The hydrophobic and anti-fouling layer can endow the film with a powerful self-cleaning ability, enabling the water droplets falling on the vehicle body to quickly roll off, and the water droplets can take away the tiny particles such as dust adhering to the surface of the film while rolling. Under the action of the superhydrophobic performance and surface structure of the film, stains such as bird droppings and tree sap are difficult to penetrate and adhere when contacting the surface of the film, effectively improving the anti-fouling effect of the film. The acrylate resin, the liquid penetration through-holes, the limiting connection grooves and the bow-shaped connection grooves will enhance the bonding strength between the layers of the film, effectively reducing the situation of delamination of the film. The rapid curing layer is rapidly cured by the automatically flowing out catalyst, effectively avoiding the deviation of the curing speed of the film when the laminating pressure is inconsistent, ensuring the uniformity of the curing speed of the film, and improving the pasting efficiency of the film. Description of the drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0016] The following drawings in the description only relate to some embodiments of the present invention and do not limit the present invention.

[0017] In the drawings: Figure 1 is the overall structure schematic diagram of the present invention.

[0018] Figure 2 is the cross-sectional structure schematic diagram of the hydrophobic and anti-fouling layer of the present invention.

[0019] Figure 3 is the structure schematic diagram of the position-limiting woven layer of the present invention.

[0020] Figure 4 is the split structure schematic diagram of the hydrophobic and anti-fouling layer and the position-limiting woven layer of the present invention.

[0021] Figure 5 is the split structure schematic diagram of the rapid curing layer, the pressure-sensitive adhesive layer and the release paper of the present invention.

[0022] List of reference numerals 1. Hydrophobic antifouling layer; 101. Anti-fracture woven mesh; 102. Bow-shaped connecting groove; 2. Position-limiting woven layer; 201. Polylactic acid microcapsule; 3. Rapid curing layer; 301. Liquid penetration through-hole; 4. Pressure-sensitive adhesive layer; 401. Position-limiting connecting groove; 5. Release paper. Detailed implementation mode

[0023] Example 1: Please refer to Figures 1 to 4 as shown: The present invention provides an automotive rapid-curing antifouling film with superhydrophobic properties, including a hydrophobic antifouling layer 1, a position-limiting woven layer 2, a rapid curing layer 3, a first strengthening structure, a storage structure, a pressure-sensitive adhesive layer 4, and a release paper 5; the position-limiting woven layer 2 is laminated and compounded on the lower surface of the hydrophobic antifouling layer 1; the rapid curing layer 3 is pasted on the lower surface of the position-limiting woven layer 2; the first strengthening structure is arranged above the position-limiting woven layer 2; the storage structure is arranged below the hydrophobic antifouling layer 1; the pressure-sensitive adhesive layer 4 is pasted on the lower surface of the rapid curing layer 3; the release paper 5 is pasted on the lower surface of the pressure-sensitive adhesive layer 4.

[0024] Among them, the first strengthening structure includes an anti-fracture woven mesh 101; the anti-fracture woven mesh 101 is arranged in the middle of the hydrophobic antifouling layer 1, and the anti-fracture woven mesh 101 is woven from aramid fibers.

[0025] Among them, the position-limiting woven layer 2 is woven from polyester fibers; the rapid curing layer 3 is made of acrylate resin; the thickness of the hydrophobic antifouling layer 1 is between five and fifteen microns, the thickness of the rapid curing layer 3 is between ten and thirty microns, and the thickness of the pressure-sensitive adhesive layer 4 is between five and ten microns.

[0026] Among them, the hydrophobic antifouling layer 1 is made of a superhydrophobic material. Add a fluoropolymer and a silicone polymer into a reaction kettle, stir evenly at a temperature of fifty to eighty degrees Celsius, and then add nano-scale silica particles and nano-scale titanium dioxide particles in sequence, and continue to stir for thirty to sixty minutes to make the particles evenly dispersed in the polymer system to make a superhydrophobic material. The surface of the hydrophobic antifouling layer 1 has a large number of tiny protrusions and depressions.

[0027] Among them, the first strengthening structure further includes a bow-shaped connecting groove 102; there are multiple bow-shaped connecting grooves 102, and multiple bow-shaped connecting grooves 102 are evenly distributed and opened in the lower part of the hydrophobic antifouling layer 1.

[0028] Among them, the storage structure includes polylactic acid microcapsules 201; there are multiple polylactic acid microcapsules 201, and multiple polylactic acid microcapsules 201 are evenly distributed and fixedly connected in the middle of the position-limiting woven layer 2, and the inner sides of the multiple polylactic acid microcapsules 201 are respectively filled with acrylate resin or a catalyst.

[0029] Specific usage and functions of this embodiment: Before pasting, first clean and dry the vehicle body surface to ensure no impurities such as dust and oil stains. Then, starting from one end of the film, slowly uncover the release paper 5 below the pressure-sensitive adhesive layer 4, align the film with the part of the vehicle body to be pasted, and gently paste it on. At the same time, use a squeegee to scrape from the starting end of the paste to the other end to expel the air between the film and the vehicle body, so that the film fits tightly against the vehicle body. After pasting, irradiate the film with an ultraviolet lamp. The ester bonds in the molecular chains of the polylactic acid microcapsules 201 break under the action of the ultraviolet photon energy, causing the polylactic acid microcapsules 201 to rupture. At this time, the acrylate resin or catalyst inside the polylactic acid microcapsules 201 will flow out. Part of the acrylate resin or catalyst will enter the bow-shaped connection groove 102, and the remaining acrylate resin or catalyst will flow to the rapid curing layer 3. The hydrophobic and anti-fouling layer 1 can make the contact angle of water droplets on the film surface greater than 150 degrees, presenting an approximately spherical water droplet shape and thus rolling off quickly. The anti-fracture woven mesh 101 and the position-limiting woven layer 2 can significantly improve the tensile resistance of the film.

[0030] Embodiment Two: As Figures 2 to 5 shown: Based on Embodiment One, it further includes a second strengthening structure; the second strengthening structure is arranged below the hydrophobic and anti-fouling layer 1.

[0031] Among them, the second strengthening structure includes liquid penetration through-holes 301; there are multiple liquid penetration through-holes 301, and the multiple liquid penetration through-holes 301 are evenly distributed and opened in the middle of the rapid curing layer 3.

[0032] Among them, the second strengthening structure further includes limit connection grooves 401; there are multiple limit connection grooves 401, and the multiple limit connection grooves 401 are evenly distributed and opened on the upper part of the pressure-sensitive adhesive layer 4.

[0033] Specific usage and functions of this embodiment: The acrylate resin or catalyst flowing to the rapid curing layer 3 will flow into the limit connection grooves 401 from the liquid penetration through-holes 301, and the catalyst will cause the rapid curing layer 3 and the acrylate resin to cure quickly. The cured rapid curing layer 3 and acrylate resin can make the combination between the layers of the film more tight and stable.

[0034] In this article, the following points need to be noted: 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0035] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. An automotive fast-curing anti-fouling film with superhydrophobic properties, comprising a hydrophobic anti-fouling layer (1), a position-limiting woven layer (2), a fast-curing layer (3), a first strengthening structure, a second strengthening structure, a storage structure, a pressure-sensitive adhesive layer (4) and a release paper (5); the position-limiting woven layer (2) is laminated and compounded on the lower surface of the hydrophobic anti-fouling layer (1); it is characterized in that: The quick-curing layer (3) is pasted on the lower surface of the position-limiting woven layer (2); the first strengthening structure is arranged above the position-limiting woven layer (2); the storage structure is arranged below the hydrophobic and antifouling layer (1); the pressure-sensitive adhesive layer (4) is pasted on the lower surface of the quick-curing layer (3); the release paper (5) is pasted on the lower surface of the pressure-sensitive adhesive layer (4); the second strengthening structure is arranged below the hydrophobic and antifouling layer (1).

2. The superhydrophobic automotive fast-curing antifouling coating film according to claim 1, characterized in that: The first strengthening structure includes an anti-fracture woven mesh (101); the anti-fracture woven mesh (101) is arranged in the middle of the hydrophobic and antifouling layer (1), and the anti-fracture woven mesh (101) is woven from aramid fibers.

3. The fast-curing antifouling coating film with superhydrophobic performance for automobiles according to claim 1, wherein: The position-limiting woven layer (2) is woven from polyester fibers; the quick-curing layer (3) is made of acrylate resin; the thickness of the hydrophobic and antifouling layer (1) is between five and fifteen microns, the thickness of the quick-curing layer (3) is between ten and thirty microns, and the thickness of the pressure-sensitive adhesive layer (4) is between five and ten microns.

4. The superhydrophobic automotive fast-curing anti-fouling coating film according to claim 1, wherein: The hydrophobic and antifouling layer (1) is made of a superhydrophobic material, and the surface of the hydrophobic and antifouling layer (1) has a large number of tiny protrusions and depressions.

5. The superhydrophobic automotive fast-curing anti-fouling coating film according to claim 1, characterized in that: The first strengthening structure further includes bow-shaped connecting grooves (102); a plurality of bow-shaped connecting grooves (102) are provided, and the plurality of bow-shaped connecting grooves (102) are evenly distributed and opened in the lower part of the hydrophobic and antifouling layer (1).

6. The automotive fast-curing anti-fouling coating film with superhydrophobic performance according to claim 1, wherein: The storage structure includes polylactic acid microcapsules (201); a plurality of polylactic acid microcapsules (201) are provided, and the plurality of polylactic acid microcapsules (201) are evenly distributed and fixedly connected in the middle of the position-limiting woven layer (2), and acrylate resin or a catalyst is filled in the inner sides of the plurality of polylactic acid microcapsules (201) respectively.

7. The automotive fast-curing anti-fouling coating film with superhydrophobic performance according to claim 1, wherein: The second strengthening structure includes liquid-permeating through holes (301); a plurality of liquid-permeating through holes (301) are provided, and the plurality of liquid-permeating through holes (301) are evenly distributed and opened in the middle of the quick-curing layer (3).

8. The superhydrophobic automotive fast-curing antifouling coating film according to claim 1, characterized in that: The second strengthening structure further includes limiting connecting grooves (401); a plurality of limiting connecting grooves (401) are provided, and the plurality of limiting connecting grooves (401) are evenly distributed and opened in the upper part of the pressure-sensitive adhesive layer (4).

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