Automobile temperature change decorative film

Abstract

The utility model provides an automobile temperature change decorative film, which relates to the technical field of automobile decorative films and comprises the following functional layers which are sequentially overlapped: an antifouling coating, a wear-resistant coating, a temperature change coating, a PMMA (polymethyl methacrylate) film, a pattern printing ink layer, an adhesive layer and an ABS (acrylonitrile butadiene styrene) layer. The utility model provides an automobile temperature change decorative film, which not only can be printed with patterns, but also has a temperature change effect, can change color along with the change of the temperature in an automobile, not only achieves a decorative effect, but also has a temperature sensing effect, and fully highlights individuation and science and technology feelings.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile decorative films, and more specifically to an automobile temperature-variable decorative film. Background Art

[0002] With the development of society, people's living standards are gradually improving, and the popularity of cars is also expanding. Nowadays, cars are no longer just a means of transportation, but are regarded as a symbol of comfort and personalized decoration. Especially in modern society, people's demand for comfort, personalization and technological sense of car interiors is becoming more and more prominent.

[0003] In order to meet the demand for beautification of car interior decoration, the application of film forming technology in car interior is gradually increasing. This technology is represented by INS (injection molding) and TOM (thermoforming) technology, which can not only realize the decoration of interior parts, but also reduce environmental pollution to a certain extent. However, most of the car interior films on the market are made by traditional printing methods, such as carbon fiber, wood grain, piano black and other patterns, but lack temperature change effect.

[0004] Traditional INS and TOM molded interior films mainly rely on printing different patterns to achieve decorative effects, and do not incorporate temperature change technology. This results in the interior films being unable to provide more functionality while meeting decorative needs. In today's automotive interior decoration market that pursues a sense of technology and personalization, this single-function interior film has gradually become somewhat outdated.

[0005] Therefore, there are limitations in the current market for traditional INS and TOM molded interior films. Although these films can achieve decorative effects, they cannot meet consumers' demand for more functionality. The lack of temperature change effect makes the functionality of interior films insufficient and unable to match the trend of modern car interior decoration. This limitation constitutes a certain obstacle to improving the quality of car interior decoration and attracting consumers' interest. Utility Model Content

[0006] In order to solve the above defects, the utility model provides a car temperature-changing decorative film, comprising the following functional layers stacked in sequence:

[0007] Antifouling coating, wear-resistant coating, temperature-variable coating, PMMA film, pattern printing ink layer, adhesive layer and ABS layer.

[0008] Preferably, in the automotive temperature-changing decorative film, the thickness of each functional layer is:

[0009] Antifouling coating 10nm-20nm;

[0010] Wear-resistant coating 20μm-25μm;

[0011] Temperature-dependent coating 20μm-25μm;

[0012] PMMA film 100μm-125μm;

[0013] Pattern printing ink layer 5μm-10μm;

[0014] Adhesive layer 15μm-25μm;

[0015] ABS layer 0.35μm-0.4mm.

[0016] Preferably, the temperature-changing coating is a coating formed by a composite structure composed of color-changing microcapsules and synthetic resin; wherein the composite structure is a composite structure with the color-changing microcapsules as the core and the synthetic resin as the outer layer.

[0017] Preferably, the PMMA film is a film made of a transparent material.

[0018] Preferably, the antifouling coating is a coating composed of active silane groups and fluorine-modified organic group coatings.

[0019] Preferably, the active silane group and fluorine-modified organic group coating in the antifouling coating is a nanoscale coating.

[0020] Preferably, the pattern printing ink layer is a polyurethane flame retardant oil film.

[0021] Preferably, the adhesive layer is modified polyurethane thermosetting adhesive.

[0022] Preferably, the automotive temperature-changing decorative film further comprises an antibacterial adsorption functional layer disposed between the pattern printing ink layer and the adhesive layer;

[0023] The antibacterial adsorption functional layer comprises nano silver particles and activated carbon material coated on the nano silver particles.

[0024] Preferably, the nano silver particles are particles attached to the surface of the pattern printing ink layer on one side facing the adhesive layer;

[0025] The nano silver particles are in a microscopic round cake-like structure;

[0026] The activated carbon material is coated on the surface of the nano-silver particles, and the activated carbon material includes a first layer of activated carbon disposed on the surface of the microscopic round cake-shaped structure of the nano-silver particles, and a second layer of activated carbon disposed around the microscopic round cake-shaped structure of the nano-silver particles; the first layer of activated carbon and the second layer of activated carbon are connected to coat the nano-silver particles therein;

[0027] The height of the first layered activated carbon and the nano-silver particles is greater than the height of the second layered activated carbon, so that the first layered activated carbon and the second layered activated carbon are arranged in a stepped manner from high to low to form a microscopic defect surface;

[0028] The adhesive layer is coated on the surface of the microscopic defects and fills the pores formed by the stepped arrangement.

[0029] The utility model provides a temperature-changing decorative film for automobiles. It comprises the following functional layers stacked in sequence: antifouling coating, wear-resistant coating, temperature-changing coating, PMMA film, pattern printing ink layer, adhesive layer and ABS layer. The utility model provides a temperature-changing decorative film for automobiles. In addition to being able to print patterns, the temperature-changing decorative film also has a temperature-changing effect and can change color as the temperature in the car changes, achieving both a decorative effect and a temperature-sensing effect, fully highlighting the sense of individuality and technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the cross-sectional structure of the automotive temperature-changing decorative film of the utility model;

[0031] Figure 2 It is a cross-sectional schematic diagram of the temperature-changing layer of the temperature-changing automotive decorative film of the utility model;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the automotive temperature-changing decorative film of the utility model including an antibacterial adsorption functional layer;

[0033] Figure 4 This is a schematic structural diagram of the connection between the nano silver particles and the pattern printing ink layer of the automotive temperature-changing decorative film of the utility model;

[0034] Figure 5 The utility model is a schematic diagram of the cross-sectional connection relationship between the pattern printing ink layer, the antibacterial adsorption functional layer and the adhesive layer in the automotive temperature-changing decorative film.

[0035] Reference numerals:

[0036] 100, automotive temperature-changing decorative film; 1, antifouling coating; 2, wear-resistant coating; 3, temperature-changing coating; 31, color-changing microcapsules; 32, synthetic resin; 4, PMMA film; 5, pattern printing ink layer; 6, antibacterial adsorption functional layer; 61, nanosilver particles; 62, activated carbon material; 621, first layer of activated carbon; 622, second layer of activated carbon; 7, adhesive layer; 8, ABS layer.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] refer to Figure 1The utility model provides a car temperature-changing decorative film 100, comprising the following functional layers 8 stacked in sequence:

[0044] Antifouling coating 1, wear-resistant coating 2, temperature-variable coating 3, PMMA film 4, pattern printing ink layer 5, adhesive layer 7 and ABS layer 8.

[0045] The antifouling coating 1 is a film layer formed on the surface of the entire structure, which has antifouling, water-repellent, and scratch-resistant properties. Its main function is to protect the entire structure from dirt and water, while improving its wear resistance and durability. Placing it in the outermost position helps protect the entire structure and ensure its long-term beauty.

[0046] The wear-resistant coating 2 is used to provide additional wear-resistant protection against scratches and abrasions in daily use. Placing it under the antifouling coating 1 can further enhance the durability of the structure while maintaining the beauty of the surface. It can use polyurethane acrylate UV curing technology to make it highly durable and weather-resistant.

[0047] The above-mentioned temperature-changing coating 3 can change color according to temperature changes. Its role is to increase the sense of technology and personalization of the interior and make the cockpit more colorful. Placing it in the middle of the structure helps to provide a visible change effect in the cockpit.

[0048] As mentioned above, the PMMA film 4 is mainly used as a protective layer, covering the temperature-changing coating 3. It is used to provide good transparency and glossiness, while protecting the temperature-changing coating 3 from mechanical damage and chemical erosion. The existence of this layer can extend the service life of the temperature-changing coating 3, while ensuring the clarity of the color-changing effect.

[0049] The above-mentioned pattern printing ink layer 5 is used for printing patterns and designs to add personalized decoration to the interior. Placing it under the PMMA film 4 allows the pattern to remain clearly visible under the transparent protective layer.

[0050] The adhesive layer 7 is used to fix the entire structure to the surface of the automobile interior. Placing it at the bottom of the structure can ensure that the entire decorative film is firmly adhered to the interior surface and is not easy to fall off or deform.

[0051] As mentioned above, the ABS layer 8, as the bottom support layer of the structure, provides additional strength and stability. It is enough to support the weight and pressure of the entire structure. Placing it on top of the adhesive layer 7 can provide better structural stability and durability.

[0052] Furthermore, in the automotive temperature-changing decorative film 100, the thickness of each functional layer is:

[0053] Antifouling coating 1, 10nm-20nm;

[0054] Wear-resistant coating 2, 20μm-25μm;

[0055] Temperature-variable coating 3, 20μm-25μm;

[0056] PMMA film 4, 100μm-125μm;

[0057] Pattern printing ink layer 5, 5μm-10μm;

[0058] Adhesive layer 7, 15 μm-25 μm;

[0059] ABS layer 8, 0.35 μm-0.4 mm.

[0060] For further reference, Figure 2 The temperature-changing coating 3 is a coating formed by a composite structure composed of color-changing microcapsules 31 and synthetic resin 32; wherein the composite structure is a composite structure with the color-changing microcapsules 31 as the core and the synthetic resin 32 as the outer layer.

[0061] It should be noted that in the present invention, the color-changing microcapsules 31 are encapsulated with synthetic resin 32 to form a composite material. This technology avoids chemical corrosion and physical damage by forming a protective layer, thereby ensuring the stability and durability of the temperature-changing effect.

[0062] There are several potential problems with directly mixing the color-changing microcapsules 31 with PMMA, or preparing a single color-changing microcapsule 31 on the surface of PMMA. Without a protective layer, the particles of the color-changing microcapsules 31 or the temperature-changing powder may be directly exposed to the external environment, including light, heat, oxygen and other chemicals, which may damage the chemical structure of the temperature-changing powder. The effectiveness of the color-changing microcapsules 31 depends on the integrity of their chemical structure. Once damaged, their response performance to temperature may be significantly reduced, causing the temperature-changing effect to fail or become unstable.

[0063] In the present invention, the color-changing microcapsules 31 are coated with synthetic resin 32 to form a composite material. This technology can effectively solve the above problems. By wrapping the color-changing microcapsules 31 in a uniform and chemically stable synthetic resin 32 layer, a coated composite material can be formed. This structure not only protects the color-changing microcapsules 31 from corrosion by external chemicals, but also prevents physical damage such as friction or impact. This protective layer ensures that the color-changing microcapsules 31 can remain stable even in a relatively harsh environment, thereby maintaining the long-term effectiveness and reliability of the temperature change effect.

[0064] Directly mixing the color-changing microcapsules 31 or directly preparing the temperature-changing coating 3 alone may result in unstable effects and reduced quality, while the use of synthetic resin 32 coating technology can significantly improve the stability and functionality of the product, providing a feasible technical path for the commercial application of high-quality temperature-changing materials.

[0065] As mentioned above, the carrier film is a carrier for the PMMA film 4 to be coated on the base film and for subsequent processing (such as printing patterns, compounding, etc.).

[0066] Furthermore, the PMMA film 4 is a film made of transparent material.

[0067] Furthermore, the antifouling coating 1 is a coating formed by coating with active silane groups and fluorine-modified organic group coatings.

[0068] Furthermore, the active silane group and fluorine-modified organic group coating in the antifouling coating 1 are nanoscale coatings.

[0069] The use of a coating composed of active silane groups and fluorine-modified organic group coatings in an antifouling coating 1 has the following purposes, functions and advantages:

[0070] Improved antifouling effect: Active silane groups and fluorine-modified organic groups are commonly used antifouling coating ingredients. They have good hydrophilicity and hydrophobicity, and can form a uniform and dense coating on the surface, effectively preventing the penetration of dirt and moisture, thereby improving the antifouling effect.

[0071] Enhanced durability: Nano-scale coatings have smaller particle sizes, which can better cover the fine bumps and cracks on the surface, enhance the adhesion and durability of the coating, and extend its service life.

[0072] Protect the surface: Reactive silane group and fluorine-modified organic group coatings have excellent corrosion resistance and chemical stability, which can effectively protect the surface from erosion by chemicals and the external environment, and maintain the original state and gloss of the surface.

[0073] Environmental protection: These coatings are generally low-volatile and environmentally friendly, do not contain harmful substances, meet environmental protection standards, and are friendly to human health and the environment.

[0074] Active silane groups are compounds containing active silicon-hydrogen bonds or amino groups, which have good adhesion and adhesion. They are often used in surface treatment to enhance the water resistance, corrosion resistance and adhesion of materials. Fluorine-modified organic group coatings are organic polymers containing fluorine elements. They are hydrophobic and stain-resistant and can form a dense coating to prevent water and dirt from penetrating. Common fluorine-modified organic groups include fluoroalkyl and fluorocarbon groups, which can form low-energy coatings on the surface, reduce surface tension, and make it difficult for dirt to adhere.

[0075] In addition, the coating is a nano-scale coating. The nano-scale coating has a small particle size, which can better fill the tiny pores and bumps on the surface to form a more uniform and dense coating. This uniformity helps prevent dirt and moisture from invading the bottom layer of the coating and improves the anti-fouling effect. The nano-scale coating can better bond with the surface of the substrate and enhance the adhesion of the coating. This excellent adhesion can prevent the coating from peeling and falling off during use and extend the service life of the coating. The nano-scale coating has higher hardness and wear resistance, can effectively resist wear and scratches in daily use, and maintain the original appearance and performance of the coating. The nano-scale coating can form a dense surface structure, reduce the adhesion of microorganisms and dirt, and prevent dirt from firmly adhering to the surface, thereby achieving a better anti-fouling effect. In addition, the nano-scale coating has a smaller particle size, which can reduce the scattering and absorption of light, improve the transparency and gloss of the coating, and make it more beautiful.

[0076] In summary, the nanoscale coating composed of active silane groups and fluorine-modified organic group coating has excellent antifouling effect, durability and environmental protection in the antifouling coating 1, and is an ideal antifouling coating 1 material.

[0077] Furthermore, the pattern printing ink layer 5 is a polyurethane flame retardant oil film.

[0078] As mentioned above, the pattern printing ink layer 5 is made of polyurethane flame retardant ink, which has good adhesion and stretchability, ensuring that the pattern is durable and reliable.

[0079] As mentioned above, polyurethane is an elastomer with excellent wear resistance, weather resistance and chemical corrosion resistance. Using polyurethane as a base material in ink can make the ink have good adhesion and stretchability, which is suitable for printing on the internal structure of the car.

[0080] Polyurethane flame retardant oil film has flame retardant properties, that is, it is not easy to burn under flame or high temperature, or even if it burns, it will automatically extinguish, thereby reducing the occurrence and spread of fire. This property is particularly important in the internal structure of the car, because the car is a confined space. Once a fire occurs, flame retardant materials can reduce the spread of fire and increase escape time.

[0081] Polyurethane flame retardant oil film has good printing properties and can achieve clear and durable pattern printing on different surfaces. This makes it an ideal choice for car interior decoration, adding a sense of personalization and fashion to the interior environment.

[0082] Furthermore, the adhesive layer 7 is a modified polyurethane thermosetting adhesive.

[0083] The adhesive layer 7 is made of modified polyurethane thermosetting adhesive, which has strong bonding strength and excellent high temperature resistance.

[0084] As mentioned above, polyurethane is a polymer with good elasticity and durability. Using polyurethane as a base material in an adhesive can give the adhesive good adhesion and stretchability. The adhesive may be improved in performance or adapted to a specific application environment by adding specific modifiers or chemicals. The modification process may include adjusting viscosity, enhancing adhesion, improving heat resistance, etc. This adhesive is a thermosetting adhesive, which means that it will undergo chemical cross-linking after heating to become hardened and resistant to high temperatures. This property allows the adhesive to cure quickly at a certain temperature after application to form a strong bonding layer. Due to its thermosetting and modified characteristics, modified polyurethane thermosetting adhesives are often used in bonding situations that require high strength and heat resistance, such as the fixing and bonding of automotive interior structures, such as decorative parts, windshields, body panels, etc.

[0085] In summary, modified polyurethane thermosetting adhesive is an adhesive with good adhesion, heat resistance and durability, suitable for fixing and connecting work in automotive interior decoration.

[0086] For further reference, Figure 3 , the automotive temperature-changing decorative film 100 further includes an antibacterial adsorption functional layer 6 disposed between the pattern printing ink layer 5 and the adhesive layer 7;

[0087] The antibacterial adsorption functional layer 6 includes nano silver particles 61 and an activated carbon material 62 coated on the nano silver particles 61 .

[0088] As mentioned above, conventional decorative films only have decorative effects. In the present invention, the automotive temperature-changing decorative film 100 provided has not only the effect of temperature change, but also takes into account that the components or structures in the car will produce certain formaldehyde at high temperatures, and the surface may produce certain bacteria due to the touch of different people, the placement of different items, and loading and unloading. In order to solve the above problems, in the present invention, an antibacterial adsorption functional layer 6 is provided between the pattern printing ink layer 5 and the adhesive layer 7. In addition, the functional layer contains nano-scale nano-silver particles 61 and an activated carbon material 62 coated outside the nano-silver particles 61.

[0089] The antibacterial adsorption functional layer 6 has the following functions and advantages:

[0090] Antibacterial function: The antibacterial adsorption functional layer 6 contains nano silver particles 61 and activated carbon material 62. The nano silver particles 61 have excellent antibacterial properties and can inhibit the growth of bacteria, viruses and fungi, thereby effectively reducing the reproduction of bacteria inside the car and keeping the internal environment clean and hygienic.

[0091] Adsorption function: The activated carbon material 62 has good adsorption performance and can absorb odor, harmful gases and particulate matter in the air, purify the air inside the car, and improve the quality of the car environment. In addition, it can absorb formaldehyde generated by the car structure or parts to which the car temperature-changing decorative film 100 is attached in a high temperature environment.

[0092] Health protection: In the interior of the car, especially in confined spaces, the presence of bacteria and harmful substances may pose a potential threat to the health of passengers. By adding the antibacterial adsorption functional layer 6, the growth of bacteria can be effectively reduced, the air quality in the car can be improved, and the health of passengers can be protected.

[0093] Increase comfort: Thermostatic decorative film is not only a decorative material, but also can improve the comfort of the interior environment. By adding an antibacterial adsorption functional layer 6, it can not only beautify the interior decoration, but also provide passengers with a cleaner, healthier and more comfortable driving space.

[0094] In summary, adding the antibacterial adsorption functional layer 6 to the automotive temperature-changing decorative film 100 can not only improve the hygiene and comfort of the internal environment, but also increase the added value and market competitiveness of the product, which is in line with the modern automotive industry's continuous pursuit of health, environmental protection and comfort.

[0095] For further reference, Figure 4 The nano silver particles 61 are particles attached to the surface of the pattern printing ink layer 5 on one side facing the adhesive layer 7;

[0096] The nano silver particles 61 are in a microscopic round cake-like structure;

[0097] The activated carbon material 62 is coated on the surface of the nano-silver particle 61, and the activated carbon material 62 includes a first layered activated carbon 621 disposed on the surface of the microscopic round cake-shaped structure of the nano-silver particle 61, and a second layered activated carbon 622 disposed around the microscopic round cake-shaped structure of the nano-silver particle 61; the first layered activated carbon 621 and the second layered activated carbon 622 are connected to coat the nano-silver particle 61 therein;

[0098] The height of the first layered activated carbon 621 and the nanosilver particles 61 is greater than the height of the second layered activated carbon 622, so that the first layered activated carbon 621 and the second layered activated carbon 622 are arranged in a stepped manner from high to low to form a microscopic defect surface;

[0099] refer to Figure 5 The adhesive layer 7 is coated on the surface of the microscopic defects and fills the pores formed by the stepped arrangement.

[0100] As mentioned above, the nanosilver particles 61 are attached to the pattern printing ink layer 5 in the direction toward the adhesive layer 7. This configuration helps to ensure the distribution of the nanosilver particles 61 on the surface of the decorative film. The nanosilver particles 61 are in a microscopic round cake-shaped structure. This shape is adopted in the utility model instead of coating the entire coating with nanosilver. This setting can increase the surface area of ​​the nanosilver particles 61 while controlling the cost, increase the possibility of contact with bacteria, and thus enhance the antibacterial effect.

[0101] The nano silver particles 61 are distributed on the surface of the pattern printing ink layer 5 to form a particle matrix with a round cake structure, thereby increasing its antibacterial performance while increasing its surface area due to its shape.

[0102] The activated carbon material 62 includes a first layered activated carbon 621 and a second layered activated carbon 622 .

[0103] The first layered activated carbon 621 is disposed on the surface of the nano-silver particles 61, and can absorb and neutralize harmful gases and odors in the air, thereby improving the air quality in the vehicle.

[0104] The second layered activated carbon 622 surrounds the nano-silver particles 61 and can further adsorb and neutralize harmful substances, thereby ensuring a clean and healthy environment inside the vehicle.

[0105] The use of activated carbon material 62 to cover nano silver particles 61 to form the antibacterial adsorption functional layer 6 has the following effects and advantages:

[0106] Enhanced antibacterial effect: The activated carbon material 62 can increase the surface area of ​​the antibacterial adsorption functional layer 6, increasing the possibility of contact between the nanosilver particles 61 and bacteria. This enhanced contact surface helps to release silver ions more effectively and interact with bacteria, thereby enhancing the antibacterial effect.

[0107] Improve adsorption capacity: Activated carbon material 62 has excellent adsorption performance and can adsorb and neutralize harmful gases, odors and volatile organic compounds (VOCs) in the air, such as formaldehyde. This adsorption effect helps to purify the air inside the car and improve the quality of the in-car environment.

[0108] Reduce silver ion release: The activated carbon material 62 as a coating layer can effectively limit the direct contact of the nanosilver particles 61 and reduce the release rate of silver ions. This helps to stabilize the antibacterial effect and reduce the potential impact of silver ions on the environment.

[0109] Reduced risks: Coating the nanosilver particles 61 can reduce the health and environmental risks that may occur during their use.

[0110] It should be noted that nanosilver is a material with antibacterial, antiviral and antifungal properties, but if debris and particles drift into the air, it may cause some potential harm to the human body, including:

[0111] Respiratory tract irritation: Nanosilver particles 61 may form suspended particles in the air. When people inhale these particles, they may cause respiratory tract irritation, causing symptoms such as coughing, wheezing, or throat discomfort.

[0112] Lung damage: Long-term exposure to high concentrations of nanosilver particles61 may cause damage to the lungs, including inflammation, fibrosis, and tissue damage, thereby increasing the risk of respiratory diseases.

[0113] Cytotoxicity: Nanosilver particles 61 may enter the human body through inhalation and then interact with cells. Studies have shown that high concentrations of nanosilver particles 61 may have toxic effects on cells, causing cell damage and cell death.

[0114] Allergic reaction: Some people may have an allergic reaction to nanosilver particles 61, which manifests as symptoms such as allergic rhinitis, skin itching, and urticaria.

[0115] Potential long-term health effects: Although nanosilver has antimicrobial effects, long-term exposure to high concentrations of nanosilver particles61 may lead to potential long-term health effects such as immune system disorders and nervous system toxicity.

[0116] Therefore, although nanosilver can be used for antibacterial and disinfection at a certain concentration, the release amount of nanosilver particles 61 needs to be carefully controlled during use to avoid potential harm to human health.

[0117] By encapsulating the activated carbon material 62 , the possibility of human body contacting the nano-silver particles 61 can be reduced, thereby reducing potential harmful effects.

[0118] Enhanced stability: The activated carbon material 62 as a protective layer can improve the stability and durability of the antibacterial adsorption functional layer 6. It can reduce the impact of external factors on the nanosilver particles 61 and extend the service life of the antibacterial adsorption functional layer 6.

[0119] In summary, using activated carbon material 62 to cover nanosilver particles 61 to form an antibacterial adsorption functional layer 6 can improve the antibacterial effect and odor adsorption capacity of the decorative film, while reducing the risk of silver ion release, providing more reliable protection for the health and comfort of the interior environment of the car.

[0120] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A car temperature-changing decorative film, characterized in that: It includes the following functional layers stacked in sequence: Antifouling coating, wear-resistant coating, temperature-variable coating, PMMA film, pattern printing ink layer, adhesive layer and ABS layer.

2. The automotive temperature-changing decorative film according to claim 1, characterized in that: In the automotive temperature-changing decorative film, the thickness of each functional layer is: Antifouling coating 10nm-20nm; Wear-resistant coating 20μm-25μm; Temperature-dependent coating 20μm-25μm; PMMA film 100μm-125μm; Pattern printing ink layer 5μm-10μm; Adhesive layer 15μm-25μm; ABS layer 0.35μm-0.4mm.

3. The automotive temperature-changing decorative film according to claim 1, characterized in that: The temperature-changing coating is a coating formed by a composite structure composed of color-changing microcapsules and synthetic resin; wherein the composite structure has the color-changing microcapsules as the core and the synthetic resin as the outer layer.

4. The automotive temperature-changing decorative film according to claim 1, characterized in that: The PMMA film is a film made of transparent material.

5. The automotive temperature-changing decorative film according to claim 1, characterized in that: The pattern printing ink layer is a polyurethane flame retardant oil film.

6. The automotive temperature-changing decorative film according to claim 1, characterized in that: The adhesive layer is modified polyurethane thermosetting adhesive.

7. The automotive temperature-changing decorative film according to claim 1, characterized in that: The automotive temperature-changing decorative film further comprises an antibacterial adsorption functional layer disposed between the pattern printing ink layer and the adhesive layer; The antibacterial adsorption functional layer comprises nano silver particles and activated carbon material coated on the nano silver particles.

8. The automotive temperature-changing decorative film according to claim 7, characterized in that: The nano silver particles are particles attached to the surface of the pattern printing ink layer on one side facing the adhesive layer; The nano silver particles are in a microscopic round cake-like structure; The activated carbon material is coated on the surface of the nano-silver particles, and the activated carbon material includes a first layer of activated carbon disposed on the surface of the microscopic round cake-shaped structure of the nano-silver particles, and a second layer of activated carbon disposed around the microscopic round cake-shaped structure of the nano-silver particles; the first layer of activated carbon and the second layer of activated carbon are connected to coat the nano-silver particles therein; The height of the first layered activated carbon and the nano-silver particles is greater than the height of the second layered activated carbon, so that the first layered activated carbon and the second layered activated carbon are arranged in a stepped manner from high to low to form a microscopic defect surface; The adhesive layer is coated on the surface of the microscopic defects and fills the pores formed by the stepped arrangement.

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