Anti-fog vehicle body sticker

Abstract

The utility model discloses an anti-fog vehicle body sticker which comprises a base material layer, one side of the base material layer is coated with an anti-fog layer, the side, away from the anti-fog layer, of the base material layer is coated with a polyacrylate bonding layer, and the side, away from the base material layer, of the polyacrylate bonding layer is provided with a bottom layer. The anti-fog layer is an acrylic acid grafted chitosan coating; the acrylic acid grafted chitosan coating is also filled with boron nitride nanospheres and silicon dioxide nanospheres. The vehicle body sticker disclosed by the utility model has excellent anti-fog performance.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body stickers, in particular to an anti-fog vehicle body sticker. Background Art

[0002] Car body stickers are high-performance films that are attached to the surface of car paint to decorate the car body and protect the original paint. Existing car body stickers are mainly composed of three parts: a functional layer, an adhesive layer, and a backing paper. The functional layer mainly gives the car body stickers light transmission, waterproof, flame retardant, self-repairing and other properties. However, for car body stickers on the market, in the cold winter or rainy season, due to the temperature difference between the inside and outside of the car, dew will condense on the car body stickers, reducing the light transmittance of the car body stickers, thereby posing a safety hazard to driving. Therefore, the development of a car body sticker with excellent anti-fog function is an urgent problem to be solved in this field. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide an anti-fog vehicle body sticker with excellent anti-fog performance.

[0004] The anti-fog vehicle body sticker according to the utility model comprises a substrate layer, one side of the substrate layer is coated with an anti-fog layer, the side of the substrate layer away from the anti-fog layer is coated with a polyacrylate adhesive layer, and the side of the polyacrylate adhesive layer away from the substrate layer is provided with a bottom layer;

[0005] The anti-fog layer is an acrylic acid grafted chitosan coating.

[0006] Preferably, the acrylic acid grafted chitosan coating is also filled with boron nitride nanospheres and silicon dioxide nanospheres.

[0007] Preferably, a silicon dioxide array layer is deposited on a side of the anti-fog layer away from the substrate layer, and the top of the silicon dioxide array layer is distributed in a cone-shaped array.

[0008] Preferably, the thickness of the silicon dioxide array layer is 1-5 μm; the height of the cone array is 0.1-0.5 times the thickness of the silicon dioxide array layer, and the spacing between adjacent cones is 0.1-0.3 μm.

[0009] Preferably, the anti-fog layer has a thickness of 40-80 μm.

[0010] Preferably, the substrate layer has a thickness of 50-150 μm.

[0011] Preferably, the thickness of the polyacrylate adhesive layer is 20-40 μm.

[0012] The beneficial effects of the utility model are:

[0013] The utility model uses acrylic acid grafted chitosan coating as the main raw material of the anti-fog layer, which not only has excellent anti-fog performance, but also has certain antibacterial performance, thereby improving the service life of the car body sticker; in addition, the boron nitride nanospheres and silicon dioxide nanospheres filled in the anti-fog layer can also improve the wear resistance of the car body sticker; the silicon dioxide array layer provided in the utility model is a fluorosilane-modified silicon dioxide nanoparticle layer, and the top is distributed in a conical array, which can prevent the penetration of droplets, reduce the contact area and interface adhesion between the car body sticker and water, thereby achieving a good anti-fog effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of the anti-fog vehicle body sticker.

[0015] In the figure: 1-anti-fog layer, 11-acrylic acid grafted chitosan coating, 12-boron nitride nanospheres, 13-silicon dioxide nanospheres, 2-substrate layer, 3-polyacrylate adhesive layer, 4-bottom layer, 5-silicon dioxide array layer. DETAILED DESCRIPTION

[0016] Example 1

[0017] Reference Figure 1 The anti-fog vehicle body sticker proposed by the utility model includes a substrate layer 2, an anti-fog layer 1 is coated on one side of the substrate layer 2, a polyacrylate adhesive layer 3 is coated on the side of the substrate layer 2 away from the anti-fog layer 1, and a bottom layer 4 is arranged on the side of the polyacrylate adhesive layer 3 away from the substrate layer 2.

[0018] Wherein: the anti-fog layer 1 is an acrylic grafted chitosan coating 11, which has acrylic grafted chitosan as the main functional component and has an anti-fog effect. The coating also includes components such as organic solvents, surfactants, leveling agents and anti-aging agents, and these components can be made using existing technologies.

[0019] The thickness of the antifog layer 1 is 40-80 μm, preferably 60 μm; the thickness of the substrate layer is 50-150 μm, preferably 100 μm; the thickness of the polyacrylate adhesive layer 3 is 20-40 μm, preferably 30 μm.

[0020] The utility model uses acrylic acid grafted chitosan coating as the main raw material of the anti-fog layer, which not only has excellent anti-fog performance, but also has certain antibacterial performance, thereby prolonging the service life of the vehicle body sticker.

[0021] Example 2

[0022] Reference Figure 1 In order to improve the wear resistance of the vehicle body sticker, based on the technical solution of Example 1, the acrylic grafted chitosan coating 11 is further filled with boron nitride nanospheres 12 and silicon dioxide nanospheres 13.

[0023] Example 3

[0024] Reference Figure 1 In order to further improve the anti-fog performance of the vehicle body sticker, based on the technical solutions of Example 1 or 2, a silicon dioxide array layer 5 is further deposited on the side of the anti-fog layer 1 away from the substrate layer 2, and the top of the silicon dioxide array layer 5 is distributed in a conical array.

[0025] Wherein: the thickness of the silicon dioxide array layer 5 is 1-5 μm, preferably 3 μm; the height of the cone array is 0.1-0.5 times the thickness of the silicon dioxide array layer 5, preferably 0.3 times; the spacing between adjacent cones is 0.1-0.3 μm, preferably 0.2 μm.

[0026] The silicon dioxide array layer provided in the utility model is a silicon dioxide nanoparticle layer modified by fluorosilane, and the top is distributed in a cone array, which can prevent the penetration of droplets, reduce the contact area and interface adhesion between the car body sticker and water, and thus achieve a good anti-fog effect.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Anti-fog vehicle body sticker, characterized by: It comprises a substrate layer (2), one side of the substrate layer (2) is coated with an anti-fog layer (1), the side of the substrate layer (2) away from the anti-fog layer (1) is coated with a polyacrylate adhesive layer (3), and the side of the polyacrylate adhesive layer (3) away from the substrate layer (2) is provided with a bottom layer (4); The anti-fog layer (1) is an acrylic acid grafted chitosan coating (11).

2. The anti-fog vehicle body sticker according to claim 1, characterized in that: The acrylic acid grafted chitosan coating (11) is also filled with boron nitride nanospheres (12) and silicon dioxide nanospheres (13).

3. The anti-fog vehicle body sticker according to claim 1, characterized in that: A silicon dioxide array layer (5) is also deposited on the side of the anti-fog layer (1) away from the substrate layer (2), and the top of the silicon dioxide array layer (5) is distributed in a conical array.

4. The anti-fog vehicle body sticker according to claim 3, characterized in that: The thickness of the silicon dioxide array layer (5) is 1-5 μm; the height of the cone array is 0.1-0.5 times the thickness of the silicon dioxide array layer (5), and the spacing between adjacent cones is 0.1-0.3 μm.

5. The anti-fog vehicle body sticker according to claim 1, characterized in that: The thickness of the anti-fog layer (1) is 40-80 μm.

6. The anti-fog vehicle sticker according to claim 1, characterized in that: The thickness of the substrate layer (2) is 50-150 μm.

7. The anti-fog vehicle body sticker according to claim 1, characterized in that: The thickness of the polyacrylate adhesive layer (3) is 20-40 μm.

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