Hot stamping foil imaging layer coating and preparation method, hot stamping foil and its applications

Abstract

This invention discloses a hot stamping foil imaging layer coating, its preparation method, the hot stamping foil itself, and its applications. The hot stamping foil imaging layer coating provided by this invention comprises the following components in parts by weight: 30-50 parts of fluorosilicone-modified acrylic resin, 10-20 parts of curing agent, 1-3 parts of nanoparticles, 1-3 parts of defoamer, and 45-70 parts of solvent. This invention develops a fluorosilicone-modified acrylic resin with excellent corrosion resistance, which is used in the imaging layer of hot stamping foil. The provided hot stamping foil can be applied to the surface decoration of cosmetics and household appliance casings, giving cosmetics and appliances a beautiful appearance and improving product packaging quality, while also ensuring that the hot stamping surface has excellent corrosion resistance and is not corroded by alkaline detergents.

Description

Technical Field

[0001] This invention relates to the field of hot stamping foil technology, and more specifically, to a hot stamping foil imaging layer coating and preparation method, hot stamping foil and its applications. Background Technology

[0002] Hot stamping foil is a type of hot stamping material made by coating a thin film substrate and then vacuum-depositing a layer of metal foil. It typically consists of five layers of different materials, such as... Figure 1 As shown, the PET base film primarily serves a supporting role, with all other layers attached to it. The release layer isolates the aluminized layer from the base film layer, facilitating foil removal during hot stamping. The imaging layer mainly displays the color of the hot stamping foil; after hot stamping, it covers the surface of the stamped pattern and provides protection. The aluminizing utilizes aluminum's high reflectivity and strong light-reflecting properties, resulting in a metallic sheen reflected from the imaging layer. The adhesive layer acts as a bonding agent, connecting the hot stamping foil to the substrate; however, currently, domestic hot stamping foil and hot stamping films often suffer from poor surface quality and insufficient corrosion resistance.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a hot stamping foil imaging layer coating and preparation method, hot stamping foil and its application.

[0005] The technical problem solved by this invention is achieved by the following technical solution.

[0006] This invention provides a hot stamping foil imaging layer coating, which comprises the following components in parts by weight: 30-50 parts of fluorosilicone modified acrylic resin, 10-20 parts of curing agent, 1-3 parts of nanoparticles, 1-3 parts of defoamer, and 45-70 parts of solvent.

[0007] The present invention also provides a method for preparing the above-mentioned hot stamping foil imaging layer coating, which includes: stirring and dispersing fluorosilicone modified acrylic resin emulsion, curing agent, nano powder and solvent evenly, and then adding defoamer and stirring to obtain hot stamping foil imaging layer coating.

[0008] The present invention also provides a hot stamping foil, which includes a base film layer, a release layer, an imaging layer, an aluminum plating layer and an adhesive layer stacked in sequence. The imaging layer is obtained by coating and curing the above-mentioned imaging layer coating on the side of the release layer away from the base film layer.

[0009] The present invention also provides the application of the above-mentioned hot stamping foil on the surface decoration of plastic parts of cosmetics or electrical appliances.

[0010] The present invention has the following beneficial effects:

[0011] This invention provides a hot stamping foil imaging layer coating, its preparation method, the hot stamping foil itself, and its application. The hot stamping foil imaging layer coating comprises the following components in parts by weight: 30-50 parts of fluorosilicone-modified acrylic resin, 10-20 parts of curing agent, 1-3 parts of nanoparticles, 1-3 parts of defoamer, and 45-70 parts of solvent. This invention provides a corrosion-resistant fluorosilicone-modified acrylic resin, which, when used in the imaging layer of hot stamping foil, provides excellent protection for the underlying aluminum layer, effectively solving the problem of the hot stamping area on household appliance surfaces being susceptible to alkaline detergents. Applying the above-mentioned hot stamping foil to the plastic surface decoration of household appliance casings can significantly improve the corrosion resistance and interlayer adhesion of the hot stamping coating. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural breakdown diagram of hot stamping foil;

[0014] Figure 2 A schematic diagram of the layered structure of the fluorosilicone-modified acrylic resin provided in an embodiment of the present invention;

[0015] Figure 3 A schematic diagram illustrating the manufacturing process of hot stamping foil provided in an embodiment of the present invention;

[0016] Figure 4 This is an exploded view of the hot stamping foil before and after hot stamping, provided in an embodiment of the present invention. The left side is before hot stamping, and the right side is after hot stamping.

[0017] Figure 5 This is an exploded view of the structure of the hot stamping foil before the tape peel test provided in an embodiment of the present invention.

[0018] Figure 6 This is a structural breakdown diagram of the hot stamping foil after a tape peeling test, provided in an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0020] With the improvement of living standards, various household appliances have become daily necessities. Whether it's white goods like air conditioners, refrigerators, and washing machines, or black goods like televisions and stereos, they have all become important components of people's lives. After satisfying consumers' functional needs, in order to capture a larger market share, it's necessary to use certain processes to embellish the interior and exterior of products to achieve a certain decorative effect, thereby satisfying consumers' aesthetic and design requirements. Among these, hot stamping for home appliances has gained favor with home appliance manufacturers due to its advantages of being environmentally friendly, easy to operate, and low-cost.

[0021] The main areas where hot stamping is applied to home appliances generally include the interior trim and door handles of refrigerators, the bezels of televisions, the edge strips of air conditioners, and various appliance logos and functional display patterns. Once the product reaches the consumer, it will inevitably be cleaned periodically, coming into contact with detergents. Considering the special nature of electrical appliances, large amounts of water are generally not used to directly rinse the cleaning areas, resulting in detergent residues remaining on the appliance surface over time. Most detergents on the market are alkaline, requiring the hot-stamped areas to be able to withstand the corrosion of alkaline substances.

[0022] The imaging layer of hot stamping foil not only displays color but also protects the metal layer after hot stamping, as it is applied over the metal layer. Corrosion of hot stamped products essentially occurs when external substances erode the imaging layer, penetrating the metal layer and corroding the aluminum. Therefore, only by ensuring the imaging layer effectively resists external erosion can it effectively protect the metal layer. This requires the imaging layer to have excellent chemical stability and good adhesion to the aluminum to guarantee the product's corrosion resistance. Currently, hot stamping foil used in cosmetics and electrical appliances mainly comes from foreign manufacturers in Japan and Germany. Domestic hot stamping foil films suffer from generally poor surface quality and insufficient corrosion resistance. The purpose of this invention is to develop a corrosion-resistant fluorosilicone-modified acrylic resin. Using this resin in the imaging layer of hot stamping foil can provide excellent protection for the underlying aluminum layer, effectively solving the problem of the hot stamping area on household appliances being susceptible to alkaline detergents.

[0023] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0024] In a first aspect, embodiments of the present invention provide a hot stamping foil imaging layer coating, which comprises the following components in parts by weight: 30-50 parts of fluorosilicone modified acrylic resin, 10-20 parts of curing agent, 1-3 parts of nanoparticles, 1-3 parts of defoamer, and 45-70 parts of solvent.

[0025] This invention provides a hot stamping foil imaging layer coating containing a fluorosilicone-modified acrylic resin emulsion. The acrylic resin, after fluorosilicone modification, exhibits excellent corrosion resistance. This corrosion-resistant fluorosilicone-modified acrylic resin is combined with other additives and used in the imaging layer of the hot stamping foil. The resulting hot stamping foil can be applied to the surface decoration of cosmetics or electrical appliance casings. While giving cosmetics and electrical appliances a beautiful appearance and improving product packaging quality, it also ensures that the hot stamping surface has excellent corrosion resistance and is not corroded by alkaline detergents.

[0026] In an optional embodiment, the curing agent includes an amino resin, the nanoparticles are nano-silica or nano-titanium dioxide, the solvent includes one or both of methyl ethyl ketone and cyclohexanone, and the defoamer is Defom 3500.

[0027] In an optional embodiment, the raw materials for preparing fluorosilicone modified acrylic resin include the following components in parts by weight: 36-54 parts of vinyl monomers, 5-10 parts of organofluorine functional monomers, 5-10 parts of organosilicon functional monomers, 1-3 parts of initiator, and 30-50 parts of diluent.

[0028] This invention provides a fluorosilicone-modified acrylic resin with excellent corrosion resistance, which is used as the imaging layer of hot stamping foil. The developed hot stamping foil can be applied to the plastic surface decoration of home appliance casings, significantly improving the corrosion resistance and interlayer adhesion of the hot stamping coating. This is because the introduction of organofluorine and organosilicon functional monomers into the acrylic resin synthesis route allows fluorine atoms to replace H atoms in the CH bonds, forming stable CF bonds. During film formation, the introduced fluorine groups align on the side chains of the acrylic resin, and the CF bonds gradually migrate to the polymer surface, coating the CC bonds within the acrylic resin and isolating them from the external environment. Simultaneously, the introduced Si-O bonds have higher bond energies than CC and CO bonds, exhibiting greater stability and being less prone to damage. The fluorosilicone-modified acrylic resin, due to its more stable chemical properties and lower surface tension, is less susceptible to corrosion by external contaminants, thus possessing excellent corrosion resistance. Meanwhile, due to the small atomic radius and extremely high electronegativity of fluorine, the electron cloud shifts towards the fluorine atom, resulting in a very high polarity of the CF bond. This allows aluminum to have excellent adhesion to the resin surface, significantly improving the interlayer bonding between the imaging layer and the aluminum layer. Because the chain segments formed by the CF, Si-O, and CC bonds have varying surface tensions, a certain tension gradient exists. Therefore, during film formation, the organofluorine and organosilicon segments with lower surface tension migrate and accumulate on the coating surface. A schematic diagram of the layered structure of the fluorosilicone-modified acrylic resin is shown below. Figure 2As shown, during the high-temperature curing process, the acrylic resin is located inside the coating and adheres to the substrate, while the organic fluorine and organic silicon segments, due to their low surface energy, gradually migrate outward to form a protective layer, encapsulating the acrylic resin inside and isolating it from the outside world. The synergistic effect of the three greatly enhances the corrosion resistance of the imaging layer.

[0029] In optional embodiments, the vinyl monomers include one or more of methyl acrylate, methyl methacrylate, butyl acrylate, ethyl acrylate, ethyl methacrylate, n-octyl acrylate, styrene, and hydroxyethyl methacrylate.

[0030] In optional embodiments, the organosilicon functional monomers include one or more of vinyltrimethoxysilane, methyltriethoxysilane, and trimethoxymethylsilane, and the organofluorine functional monomers include one or more of dodecafluoroheptyl methacrylate, tridecafluorooctyl acrylate, and trifluoroethyl methacrylate.

[0031] In an optional embodiment, the initiator includes one or more of azobisisobutyronitrile or benzoyl peroxide, and the diluent includes one or more of xylene, butyl acetate, and n-propyl acetate.

[0032] In an optional embodiment, the fluorosilicone modified acrylic resin solution is prepared by the following method: heating a portion of the diluent, taking a portion of vinyl monomers, organofluorine functional monomers, and organosilicon functional monomers, stirring evenly, then adding a portion of the diluent and a portion of the initiator and stirring to obtain a first mixture, then mixing the remaining vinyl monomers with the first mixture evenly, adding the initiator dropwise to react and obtain a second mixture, and naturally cooling to room temperature to obtain a fluorosilicone modified acrylic resin emulsion.

[0033] In an optional embodiment, 50-70% of the total amount of diluent is heated to 60-70°C. 30-50% of the total amount of vinyl monomers, organofluorine functional monomers, and organosilicon functional monomers are taken and stirred evenly. Then, 30-50% of the total amount of diluents and 80-90% of the total amount of initiator are added and stirred to obtain a first mixture. The remaining vinyl monomers are then mixed evenly with the first mixture, and the remaining initiator is added dropwise to react and obtain a second mixture. The second mixture is heated to 75-85°C and stirred at a rate of 600-1000 r / min for 1-2 hours. Then, it is allowed to stand and naturally cooled to room temperature to obtain a fluorosilicone modified acrylic resin emulsion.

[0034] Secondly, embodiments of the present invention also provide a method for preparing the above-mentioned hot stamping foil imaging layer coating, which includes: stirring and dispersing fluorosilicone modified acrylic resin, curing agent, nanoparticles and solvent evenly, and then adding defoamer and stirring to obtain the hot stamping foil imaging layer coating.

[0035] Thirdly, embodiments of the present invention also provide a hot stamping foil, which includes a base film layer, a release layer, an imaging layer, an aluminum plating layer, and an adhesive layer stacked sequentially. The imaging layer is obtained by coating and curing the aforementioned imaging layer coating on the side of the release layer opposite to the base film layer. For details on the preparation process of the hot stamping foil, please refer to [link to relevant documentation]. Figure 3 In production, a coating machine is used for coating operations. After each coating layer is completed, it needs to be dried before proceeding to the next process.

[0036] Fourthly, embodiments of the present invention also provide the application of the above-mentioned hot stamping foil on the surface decoration of plastic parts of cosmetics or electrical appliances.

[0037] The hot stamping foil provided in this invention can be used for decorating plastic parts in the cosmetics and home appliance industries. During hot stamping, the hot stamping foil comes into contact with the plastic part, and the adhesive layer provides good adhesion when heated. Figure 4 The image shows the product structure before and after hot stamping. Under certain temperature and pressure, the heat-melting silicone resin release layer and adhesive melt. After the silicone resin melts, its adhesion decreases and it peels off from the base film. At the same time, the adhesive layer bonds the aluminum layer to the hot stamping material. In this way, the imaging layer, which wraps the aluminum layer, is bonded to the surface of the plastic part through the adhesive layer, thus playing a certain decorative role.

[0038] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0039] Example 1: Fluorosilicone-modified acrylic resin with excellent interlayer adhesion and corrosion resistance

[0040] 25 parts xylene were added to a reaction vessel and heated to 70°C with stirring. Then, 6 parts dodecafluoroheptyl methacrylate, 6 parts vinyltrimethoxysilane, 12 parts butyl acrylate, 12 parts methyl methacrylate, and 5 parts hydroxyethyl methacrylate were slowly added to the xylene in sequence and stirred until homogeneous. Then, 15 parts xylene and 3 parts azobisisobutyronitrile were slowly added and stirred for 30 min. Next, 8 parts butyl acrylate, 8 parts methyl methacrylate, and 4 parts styrene were added to the above mixture in sequence, and then 2 parts benzoyl peroxide were added dropwise. The temperature was raised to 80°C and stirred at a rate of 600-1000 r / min for 1-2 h. Then, the mixture was allowed to stand and naturally cooled to room temperature to obtain a fluorosilicone modified acrylic resin emulsion, labeled FS-Me-1.

[0041] Example 2: Fluorosilicone-modified acrylic resin with excellent interlayer adhesion and corrosion resistance

[0042] 12.5 parts of butyl acetate and 12.5 parts of xylene were added to a reaction vessel and heated to 70°C with stirring. Then, 6 parts of dodecafluoroheptyl methacrylate, 6 parts of vinyltrimethoxysilane, 12 parts of butyl acrylate, 12 parts of methyl methacrylate, and 5 parts of hydroxyethyl methacrylate were slowly added to xylene in sequence and stirred until homogeneous. Then, 7.5 parts of butyl acetate, 7.5 parts of xylene, and 3 parts of azobisisobutyronitrile were slowly added and stirred for 30 min. Next, 8 parts of butyl acrylate, 8 parts of methyl methacrylate, and 4 parts of styrene were added to the above mixture in sequence, followed by dropwise addition of 2 parts of benzoyl peroxide. The temperature was raised to 80°C and stirred at a rate of 600-1000 r / min for 1-2 h. Then, the mixture was allowed to stand and naturally cooled to room temperature to obtain a fluorosilicone modified acrylic resin emulsion, labeled FS-Me-2.

[0043] Example 3: Fluorosilicone-modified acrylic resin with excellent interlayer adhesion and corrosion resistance

[0044] 25 parts xylene were added to a reaction vessel and stirred and heated to 70°C. Then, 6 parts tridecylfluorooctyl acrylate, 6 parts vinyltrimethoxysilane, 12 parts butyl acrylate, 12 parts methyl methacrylate, and 5 parts hydroxyethyl methacrylate were slowly added to the xylene in sequence and stirred until homogeneous. Then, 15 parts xylene and 3 parts azobisisobutyronitrile were slowly added and stirred for 30 min. Next, 8 parts butyl acrylate, 8 parts methyl methacrylate, and 4 parts styrene were added to the above mixture in sequence, and then 2 parts benzoyl peroxide were added dropwise. The temperature was raised to 80°C and stirred at a rate of 600-1000 r / min for 1-2 h. Then, the mixture was allowed to stand and naturally cooled to room temperature to obtain a fluorosilicone modified acrylic resin emulsion, labeled FS-Me-3.

[0045] Example 4: Fluorosilicone-modified acrylic resin with excellent interlayer adhesion and corrosion resistance

[0046] 25 parts xylene were added to a reaction vessel and heated to 70°C with stirring. Then, 6 parts tridecafluorooctyl acrylate, 6 parts trimethoxymethylsilane, 12 parts butyl acrylate, 12 parts methyl methacrylate, and 5 parts hydroxyethyl methacrylate were slowly added to the xylene in sequence and stirred until homogeneous. Next, 15 parts xylene and 3 parts azobisisobutyronitrile were slowly added and stirred for 30 min. Then, 8 parts butyl acrylate, 8 parts methyl methacrylate, and 4 parts styrene were added to the above mixture in sequence, followed by 2 parts benzoyl peroxide dropwise. The mixture was heated to 80°C and stirred at a rate of 600-1000 r / min for 1-2 h. After standing, it was allowed to cool naturally to room temperature to obtain a fluorosilicone modified acrylic resin emulsion, labeled FS-Me-4.

[0047] Comparative Example 1

[0048] Similar to the steps in Example 1, except that no organofluorine functional monomers were added, and the amounts of butyl acrylate and methyl methacrylate were increased to 15 parts each, to prepare an organosilicon-modified acrylic resin, labeled NF-Me. The modifying effect of organosilicon functional monomers on acrylic resin was investigated by comparing the performance of the Example and Comparative Example 1.

[0049] Comparative Example 2

[0050] Similar to the steps in Example 1, the only difference was that no organosilicon functional monomers were added, and the amounts of butyl acrylate and methyl methacrylate were increased to 15 parts each, to prepare an organofluorine-modified acrylic resin, labeled NS-Me. The modifying effect of organofluorine functional monomers on acrylic resin was investigated by comparing the performance of the Example and Comparative Example 2.

[0051] Comparative Example 3

[0052] Similar to the steps in Example 1, the only difference was that no organofluorine or organosilicon functional monomers were added, and the amounts of butyl acrylate and methyl methacrylate were increased to 18 parts each, to prepare a common acrylic resin labeled N-FS-Me. The modifying effects of organofluorine and organosilicon functional monomers on the acrylic resin were investigated by comparing the performance of the Example and Comparative Example 3.

[0053] Hot stamping foil was prepared using the formulations described in the above embodiments and comparative examples.

[0054] Coating Preparation: After preparing the resin according to the formulations in the above examples and comparative examples, prepare the imaging layer coating for hot stamping foil according to the formulation. The formulation and preparation method are as follows:

[0055] Add 48 parts of solvent to the reaction vessel, then add 15 parts of the prepared resin emulsion, 5 parts of curing agent, and 2 parts of nanoparticles. Stir and disperse evenly, then add a certain amount of defoamer and continue stirring for 15 minutes to obtain the imaging layer coating.

[0056] Hot stamping foil preparation: Prepare a 19μm PET film, coat it with a release layer of a certain thickness, and then coat it with an imaging layer coating containing the above seven resins of equal thickness. After that, vacuum metallization and adhesive coating are completed to obtain seven kinds of hot stamping foil (except for the different types of imaging layer resins, the coating methods and coating amounts are the same).

[0057] Hot stamping panel preparation: Prepare a PS panel, transfer the coatings of seven different hot stamping foils onto the panel under the same hot stamping environment, and then conduct alkali corrosion resistance test and tape peel test respectively.

[0058] Alkali corrosion resistance test of hot stamping foil

[0059] The hot-stamped panels were immersed in alkaline solutions of different concentrations (sodium hydroxide was used to prepare the alkaline solutions in this experiment), and the corrosion of the hot-stamped coating was observed every 0.5 hours. The results of the sodium hydroxide corrosion resistance test are shown in Table 1 below:

[0060] Table 1

[0061] Imaging resin 0.05% NaOH solution 0.1% NaOH solution 0.2% NaOH solution 0.3% NaOH solution FS-Me-1 24h 24h 16h 12h FS-Me-2 24h 24h 16h 12h FS-Me-3 24h 24h 16h 12h FS-Me-4 24h 24h 16h 12h NF-Me 12h 12h 6h 4h NS-Me 12h 10h 4h 4h N-FS-Me 8h 4h 2h 2h

[0062] Table 1 shows that the addition of both fluorine and silicon functional monomers significantly improves the alkali corrosion resistance of acrylic resins. Adding only fluorine or silicon functional monomers improves corrosion resistance to some extent, but not as much as fluorine-silicone modified acrylic resins. Products without added organosilicon functional monomers or / and organosilicon functional monomers exhibit poor corrosion resistance.

[0063] Hot stamping foil tape peel test

[0064] Industrial-grade 3M 600 tape was used to conduct a 180° adhesion test on the hot stamping panel. The adhesion strength between the imaging layer and the aluminum plating layer was judged based on the number of times the hot stamping panel could withstand tape peeling (the tolerance limit was 10 peelings, with the image layer and aluminum layer delamination being the limit). The tape peeling test method is as follows:

[0065] (1) Apply the tape to the hot stamping coating surface, press firmly, and let it sit for three minutes. See below. Figure 5 ;

[0066] (2) Tear the peeling tape at a 180° angle and observe whether the imaging resin coating has detached from the aluminum layer. See [link to relevant documentation]. Figure 6 .

[0067] The tape peel test results are shown in Table 2 below:

[0068] Table 2

[0069] Imaging resin Tape peeling times FS-Me-1 10 times FS-Me-2 10 times FS-Me-3 10 times FS-Me-4 10 times NF-Me 8 times NS-Me 5 times N-FS-Me 5 times

[0070] According to the test results in Table 2 above, the fluorosilicone modified acrylic resin prepared in Example 1 has excellent adhesion to aluminum as an imaging resin. At the same time, the fluoro-modified acrylic resin also exhibits excellent interlayer adhesion, but the silicone-modified acrylic resin does not significantly improve the interlayer adhesion.

[0071] Comparison of alkali corrosion resistance test results and tape peel test results shows that the fluorosilicone-modified acrylic resin imaging coating prepared in this invention has good chemical stability, can resist the erosion of external alkaline substances, protects the underlying aluminum plating layer from corrosion, and the fluorosilicone-modified acrylic resin also exhibits good adhesion to the aluminum layer. In summary, the fluorosilicone-modified acrylic resin used in the hot stamping foil imaging layer of this invention exhibits good comprehensive performance, and its application in the plastic surface decoration of household appliance casings can greatly improve the corrosion resistance and interlayer adhesion of the hot stamping coating.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hot stamping foil imaging layer coating, characterized in that, The hot stamping foil imaging layer coating comprises the following components in parts by weight: 30-50 parts of fluorosilicone modified acrylic resin, 10-20 parts of curing agent, 1-3 parts of nanoparticles, 1-3 parts of defoamer, and 45-70 parts of solvent. The curing agent includes amino resin, and the nanoparticles are nano-silica or nano-titanium dioxide. The fluorosilicone modified acrylic resin is prepared by the following method: heating a portion of the diluent, taking a portion of vinyl monomers, organofluorine functional monomers, and organosilicon functional monomers, stirring evenly, then adding a portion of the diluent and a portion of the initiator and stirring to obtain a first mixture, then mixing the remaining vinyl monomers with the first mixture evenly, adding the initiator dropwise to react and obtain a second mixture, and naturally cooling to room temperature to obtain a fluorosilicone modified acrylic resin emulsion, wherein: the raw materials for preparing the fluorosilicone modified acrylic resin contain the following components in parts by weight: 36-54 parts of vinyl monomers, 5-10 parts of organofluorine functional monomers, 5-10 parts of organosilicon functional monomers, 1-3 parts of initiator and 30-50 parts of diluent.

2. The hot stamping foil imaging layer coating according to claim 1, characterized in that, The solvent includes one or both of butanone and cyclohexanone, and the defoamer is Defom 3500.

3. The hot stamping foil imaging layer coating according to claim 1, characterized in that, The vinyl monomers include one or more of methyl acrylate, butyl acrylate, ethyl acrylate, ethyl methacrylate, methyl methacrylate, hydroxyethyl methacrylate, n-octyl acrylate, and styrene.

4. The hot stamping foil imaging layer coating according to claim 1, characterized in that, The organosilicon functional monomers include one or more of vinyltrimethoxysilane, methyltriethoxysilane, and trimethoxymethylsilane, and the organofluorine functional monomers include one or more of dodecafluoroheptyl methacrylate, tridecafluorooctyl acrylate, and trifluoroethyl methacrylate.

5. The hot stamping foil imaging layer coating according to claim 1, characterized in that, The initiator includes one or more of azobisisobutyronitrile and benzoyl peroxide, and the diluent includes one or more of xylene, butyl acetate, and n-propyl acetate.

6. The hot stamping foil imaging layer coating according to claim 1, characterized in that, The fluorosilicone modified acrylic resin is prepared by the following method: 50-70% of the total amount of diluent is heated to 60-70°C, 30-50% of the total amount of vinyl monomers, organofluorine functional monomers, and organosilicon functional monomers are taken and stirred evenly, then 30-50% of the total amount of diluent and 80-90% of the total amount of initiator are added and stirred to obtain a first mixture, then the remaining vinyl monomers are mixed evenly with the first mixture, and the remaining initiator is added dropwise to react and obtain a second mixture, the second mixture is heated to 75-85°C and stirred at a rate of 600-1000 r / min for 1-2 h, then allowed to stand and naturally cool to room temperature to obtain a fluorosilicone modified acrylic resin emulsion.

7. A method for preparing a hot stamping foil imaging layer coating according to any one of claims 1-6, characterized in that, It includes: Fluorosilicone modified acrylic resin, curing agent, nanoparticles and solvent are stirred and dispersed evenly, and then defoamer is added and stirred to obtain hot stamping foil imaging layer coating.

8. A hot stamping foil, characterized in that, The hot stamping foil comprises a base film layer, a release layer, an imaging layer, an aluminum plating layer, and an adhesive layer stacked in sequence. The imaging layer is obtained by applying and curing the imaging layer coating as described in any one of claims 1-6 on the side of the release layer away from the base film layer.

9. The application of hot stamping foil according to claim 8 in the surface decoration of plastic parts for cosmetics or electrical appliances.

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