Anti-dazzle hardened film and preparation method thereof

Abstract

The invention relates to an anti-dazzle hardened film. The anti-dazzle hardened film is composed of a base film, a thermosetting solvent type priming coat and an anti-dazzle hardened layer. Wherein the thermosetting solvent type bottom coating contains an amino active functional group, particularly a primary amine functional group, the amine value of the thermosetting solvent type bottom coating is in a range of 0.6-1.3 mmol / g, and the molecular weight of the thermosetting solvent type bottom coating is in a range of 50,000-150,000. According to the arrangement mode, the adhesive force between the bottom coating and the base film and the anti-dazzle hardened layer is effectively improved, and particularly, the excellent adhesion effect is achieved through ion combination between amido and polar groups on the surface of the base material. The anti-dazzle hardened layer is made of acrylate resin and other components, and the thickness of the anti-dazzle hardened layer is controlled within the range of 2-6 microns, so that good anti-dazzle performance and wear resistance are achieved. The anti-dazzle hard coating film provided by the invention not only has an excellent anti-dazzle effect, but also has good interlayer adhesive force and weather resistance.

Description

Technical Field

[0001] The present application relates to the technical field of optical films, and in particular to an anti-glare hardened film and a preparation method thereof. Background Art

[0002] In today's rapidly developing display technology field, ensuring the clarity and readability of the display screen has become a crucial technical pursuit. For this reason, the application of anti-glare treatment technology on optical films is particularly important. Among them, anti-glare hardened film technology has occupied a prominent position in the market with its unique dual functions of anti-glare and enhanced hardness.

[0003] The core of anti-glare hardened film technology is to form a carefully designed special coating on the surface of the display panel. This coating can not only effectively reduce the interference of external light on the display image, thereby greatly improving the clarity and readability of the image, but also has excellent hardness and wear resistance. This excellent physical property enables the display panel to resist scratches and wear, greatly extending the service life of the device. Therefore, it is also necessary to improve the anti-glare hardened film to ensure that it better meets the requirements of practical applications.

[0004] Although the prior art discloses a high-water-bond antistatic hardened film stacked by a transparent film, a primer and a high-water-bond antistatic hardened layer, it does not make specific restrictions on the selection of certain key materials. On the other hand, some prior art involves a PMMA substrate layer, and includes a stacking scheme of a first adhesion-promoting primer and an anti-glare layer, but for developers seeking a thermosetting solvent-based amine-based primer scheme, the inspiration it provides is limited. Although the existing technical literature has explored the stacking scheme of the high-water-bond antistatic hardened film, it has not further selected the primer material, and it is impossible to further optimize the adhesion between the film layers. The prior art does not provide clear guidance and inspiration. Summary of the invention

[0005] The purpose of the present application is to provide an anti-glare hardened film, which can achieve better interlayer interface bonding force and enable the anti-glare hardened film to have better adhesion. The anti-glare hardened film of the present application includes a base film, a thermosetting solvent-based primer layer and an anti-glare hardened layer stacked in sequence from bottom to top; The thermosetting solvent-based primer layer contains amine-based reactive functional groups.

[0006] The base film is selected from any one of PET, PMMA, PP, TAC or PC. Preferably, the base film is PMMA.

[0007] In one embodiment, the amine value of the thermosetting solvent-based primer is in the range of 0.6-1.3 mmol / g, and the molecular weight of the thermosetting solvent-based primer is in the range of 50,000-150,000.

[0008] In one embodiment, the amine-reactive functional group is a primary amine functional group.

[0009] In one embodiment, the thickness of the anti-glare hardened layer is in the range of 2-6 μm, the thickness of the thermosetting solvent-based primer layer is in the range of 0.05-3 μm, and the thickness of the base film is in the range of 30-80 μm.

[0010] In one embodiment, the hardening liquid of the anti-glare hardening layer includes acrylic resin, solvent, initiator, particles, dispersant and leveling agent.

[0011] In one embodiment, the acrylic resin includes at least one of polyurethane-modified acrylic resin, polyester-modified acrylic resin, epoxy-modified acrylic resin, and pure acrylic resin.

[0012] In one embodiment, the particles include at least one of aluminum oxide, silicon oxide, titanium dioxide, zirconium dioxide, PMMA, PBMA, and PST.

[0013] In addition, the present application also provides a method for preparing an anti-glare hardened film, comprising providing a base film layer, coating a thermosetting solvent-based primer layer on the base film layer, drying the thermosetting solvent-based primer layer for the first time, coating an anti-glare hardening composition on the dried thermosetting solvent-based primer layer, drying the anti-glare hardening composition for the second time after coating, and UV curing after the second drying. The base film layer is preferably PMMA.

[0014] In one embodiment, the first drying condition is 1-3 minutes at 80-120°C, the second drying condition is 1-3 minutes at 70-110°C, and the UV curing condition is 80 mj / cm 2 -400mj / cm 2 UV irradiation under conditions of .

[0015] Compared with the prior art, the present application has the following beneficial effects: by optimizing the anti-glare hardening layer, the present application can reduce the light reflection on the screen surface and improve the visibility of the screen while ensuring the adhesion of the anti-glare hardening layer. The amine active functional groups in the thermosetting solvent-based primer layer can form a strong chemical bond with the base film and the anti-glare hardening layer to ensure the adhesion between the anti-glare hardening layer and the base film. The strong adhesion not only improves the durability of the film, but also avoids the problem of falling off or peeling during use. Through the precise control of the thickness of the anti-glare hardening layer and the primer layer, the anti-glare hardening film of the present application can achieve a lighter and thinner design while ensuring performance, meeting the demand for lightness and thinness of modern display devices. The preparation method of the present application is simple, flexible, and easy to mass produce. At the same time, by adjusting the preparation parameters, anti-glare hardening films with different performances and specifications can be prepared to meet the needs of different application scenarios. It has good environmental adaptability and can maintain stable performance under various environmental conditions to ensure that the display effect of the screen is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the anti-glare hardening film in the embodiment of the present application; Figure 2 This is a flow chart of the preparation method of the PMMA anti-glare hardened film of the present application.

[0017] Explanation of reference numerals: 100, base film; 200, thermosetting solvent-based primer layer; 300, anti-glare hardening layer. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0019] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] With the rapid development of modern display technology, the requirements for screen display effects are also increasing. Anti-glare performance is one of the important indicators to measure screen quality. PMMA anti-glare hardened film and anti-glare hardened film are key technologies to improve screen anti-glare performance and have become a hot topic in current technical research. The anti-glare hardened layer in the anti-glare hardened film needs to have strong adhesion to ensure that the anti-glare performance is good. Please refer to Figure 1 , Figure 1 : is a schematic diagram of the structure of the anti-glare hardening film in the embodiment of the present application. In order to solve these technical difficulties, the present application provides an anti-glare hardening film, including a base film, a thermosetting solvent-based primer and an anti-glare hardening layer stacked in sequence from bottom to top. The thermosetting solvent-based primer contains an amine active functional group. The amine active functional group can be an active functional group such as -NH2, =NH or -NCO. Due to the high polarity and ionicity of the amine group, if there are polar groups such as carboxyl or carbonyl on the surface of the object to be attached, the amine group can be ionically bonded with these functional groups, thereby improving the adhesion between the base film and the anti-glare hardening layer.

[0022] The base film is selected from any one of PET, PMMA, PP, TAC or PC, and preferably, the base film is PMMA. Due to the low surface energy and few surface active groups of PMMA substrate, the adhesion of ordinary hardening liquid is poor. By adding a thermosetting solvent-based primer layer in the technical solution of this application, the adhesion between the substrate and the anti-glare hardening layer can be effectively improved, especially on PMMA substrate, it has a better technical effect.

[0023] The amine value of the thermosetting solvent-based primer is in the range of 0.6-1.3mmol / g. When the amine value is lower than 0.6mmol / g, the amount of active hydrogen in the primer may be insufficient, resulting in insufficient adhesion of the AG anti-glare layer. When the amine value is higher than 1.3mmol / g, the excessive active hydrogen in the primer will cause the contact surface to react too quickly when the AG anti-glare layer is coated and baked, affecting the uniformity of the product appearance. The molecular weight of the thermosetting solvent-based primer is in the range of 50,000-150,000. When the molecular weight is low, the crosslinking degree of the primer itself is insufficient, and it is relatively easy to cause interlayer damage when subjected to strong external forces. When the molecular weight is high, it is easy to cause appearance defects of the primer, and the wetting ability and reactivity to the substrate become low.

[0024] In a preferred technical solution, the amine-based active photo-energy group in the thermosetting solvent-based primer is a prepolymer containing a primary amine-NH2 active functional group. The nitrogen atom of the primary amine group has a smaller steric hindrance than the nitrogen atom in other amine groups (tertiary amines), which is more conducive to its attachment to other substances. By selecting the range of amine hydrogen equivalent, amine equivalent and molecular weight in the thermosetting solvent-based primer, the adhesion effect can be further optimized.

[0025] Due to the possibility of covalent bonding with the functional groups on the surfaces of the attached objects, it is possible to exhibit excellent adhesion to various substrates. When the AG anti-glare layer is coated for the second time, some of the remaining active amine functional groups are cross-linked with the -COOH or -OH in the AG layer, so that the AG layer and the base coating layer achieve excellent adhesion.

[0026] Specifically, the thickness of the anti-glare hardened layer is in the range of 2-6 μm, the thickness of the thermosetting solvent-based primer layer is in the range of 0.05-3 μm, and the thickness of the transparent base film is in the range of 30-80 μm. The thickness of the anti-glare hardened layer is precisely controlled within the range of 2-6 μm, which not only ensures sufficient anti-glare effect, but also avoids the decrease in light transmittance and increase in cost caused by excessive thickness. As a key part of the film material, the control of the thickness of the anti-glare hardened layer has an important influence on the performance of the entire film material. The appropriate thickness can ensure good light transmittance and visual effects while maintaining sufficient anti-glare performance. The thickness of the thermosetting solvent-based primer layer is controlled within the range of 0.05-3 μm. This range setting ensures that the primer layer can give full play to its functions of enhancing adhesion and transition. Too thin a primer layer may lead to insufficient adhesion, while too thick a primer layer may affect the transparency and performance of the overall film material. The thickness of the base film is selected within the range of 30-80μm, which takes into account both the supporting role of the base film and the lightness and cost-effectiveness of the overall membrane material. This technical effect helps to achieve a lightweight design of the membrane material while maintaining sufficient strength and stability to meet the needs of various application scenarios.

[0027] Specifically, the hardening liquid of the anti-glare hardening layer includes acrylate resin, solvent, initiator, particles, dispersant and leveling agent. Acrylate resin, as the main component of the anti-glare hardening layer, provides excellent weather resistance and wear resistance, ensuring that the film material maintains good performance during long-term use. The selection of solvent takes into account the compatibility and volatility with the resin to ensure that the coating is easy to apply during the construction process and can form a uniform, non-porous hardened layer after drying. The addition of initiator is used to promote the polymerization reaction of the resin, so that the coating forms a stable network structure during the curing process, and improves the hardness and wear resistance of the coating. The selection of particles is used to achieve an anti-glare effect. By controlling the type, size and distribution of the particles, the anti-glare performance and light transmittance of the coating can be adjusted.

[0028] Specifically, the acrylic resin includes at least one of polyurethane modified acrylic resin, polyester modified acrylic resin, epoxy modified acrylic resin, and pure acrylic resin. Polyurethane modified acrylic resin is known for its excellent wear resistance and impact resistance, and is suitable for applications with high durability requirements. Polyester modified acrylic resin is an ideal choice for outdoor and high temperature environments due to its good flexibility and weather resistance. The performance of the anti-glare hardening layer can be customized and optimized according to the requirements of different application scenarios. Preferably, the acrylic resin is a hydroxyl or carboxyl acrylic resin, which can further improve the adhesion to the primer.

[0029] Specifically, the solvent includes at least one of esters, ketones, ethers, alcohols or benzenes. The diversified solvent selection is intended to achieve good compatibility between the solvent and the acrylic resin and other additives, while ensuring that the coating is easy to apply during the construction process and forms a uniform, non-porous hardened layer after drying.

[0030] Specifically, the particles include at least one of aluminum oxide, silicon oxide, titanium dioxide, zirconium dioxide, PMMA, PBMA, and PST. By selecting particles with high refractive index, such as titanium dioxide and zirconium dioxide, it is possible to effectively reduce direct reflection of light, reduce glare, and improve screen visibility. The addition of high hardness particles significantly improves the wear resistance of the coating, allowing it to withstand friction and scratches in daily use and extend its service life. By selecting particles of different types and proportions, the performance of the coating, such as anti-glare effect, wear resistance, transparency, etc., can be customized according to specific needs and application scenarios to meet the needs of different users.

[0031] Specifically, the dispersant includes at least one of anionic wetting dispersants, cationic wetting dispersants, nonionic wetting dispersants, amphoteric wetting dispersants, electrically neutral wetting dispersants, polymeric super dispersants, and controlled free radical super dispersants. In the process of preparing the anti-glare hardening layer, in order to ensure the uniform dispersion of particles in the coating, the selection of dispersants is particularly critical. These dispersants each have a unique dispersion mechanism and advantages, can effectively improve the dispersibility of particles in the coating, prevent particle agglomeration and precipitation, and ensure the uniformity and stability of the coating.

[0032] Specifically, the leveling agent is selected from silicone leveling agents and acrylic leveling agents. With its unique siloxane structure, silicone leveling agents form a thin film on the surface of the coating, effectively reducing surface tension, allowing the coating to flow evenly during the drying process to form a smooth and flat surface. At the same time, silicone leveling agents also have good weather resistance and chemical stability, which can ensure that the coating maintains excellent performance during long-term use. Acrylic leveling agents, with their good compatibility with acrylic resins and excellent wetting properties, play a good leveling role in the coating, can quickly wet the coating surface, reduce surface tension, allow the coating to flow evenly during the drying process, and reduce surface defects.

[0033] In addition, the present application also provides a method for preparing an anti-glare hardened film, including providing a base film layer, coating a thermosetting solvent-based primer layer on the transparent base film layer, drying the thermosetting solvent-based primer layer for the first time, coating an anti-glare hardening composition on the dried thermosetting solvent-based primer layer, drying for the second time after coating the anti-glare hardening composition, and UV curing after the second drying. First, a high-quality base film layer is provided as the basic structure of the entire hardened film, and a layer of thermosetting solvent-based primer layer is uniformly coated on the transparent base film layer to ensure good bonding between the primer layer and the base film layer, as well as the uniformity and density of the primer layer. Then, the coated thermosetting solvent-based primer layer is subjected to a first drying treatment. The purpose of this step is to remove the solvent in the coating, preliminarily cure the primer layer, and prepare for the subsequent coating of the anti-glare hardening composition. After the primer layer is completely dried, an anti-glare hardening composition is coated on its surface. This composition contains multiple components such as acrylic resin, particles, dispersants, and leveling agents, aiming to achieve excellent anti-glare effects and coating performance. After the coating is completed, the anti-glare hardening composition is subjected to a second drying treatment. This step further removes the solvent in the coating and allows the components in the coating to fuse together to form a uniform hardened layer. Finally, the hardened layer is treated with UV curing. Through ultraviolet irradiation, the photosensitizer in the coating undergoes a chemical reaction, prompting the coating to cure rapidly to form a strong and durable anti-glare hardened film. The UV curing technology not only has high curing efficiency, but can also be completed at room temperature, avoiding thermal damage to the substrate.

[0034] Specifically, the first drying condition is 1-3 minutes at 80-120°C, the second drying condition is 1-3 minutes at 70-110°C, and the UV curing condition is 80 mj / cm 2 -400mj / cm 2By setting precise drying temperature and time, we can ensure that the solvent in the coating is effectively removed while avoiding damage to the base film layer. UV curing technology ensures that the coating is cured under uniform light, avoiding the problems of uneven coating or local overheating that may be caused by traditional heating curing. This makes the coating more uniform and consistent. Since UV curing technology can complete the curing process in a shorter time, it can improve production efficiency. Specific embodiments In embodiment 1, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 3 μm, the thickness of the thermosetting solvent-based primer layer is 2 μm, the thickness of the transparent base film is 40 μm, the amine value of the thermosetting solvent-based primer layer is 0.6 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 50,000.

[0036] In the second embodiment, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 3 μm, the thickness of the thermosetting solvent-based primer layer is 2 μm, the thickness of the transparent base film is 40 μm, the amine value of the thermosetting solvent-based primer layer is 1.3 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 150,000.

[0037] Example three, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 3μm, the thickness of the thermosetting solvent-based primer layer is 2μm, the thickness of the transparent base film is 40μm, the amine value of the thermosetting solvent-based primer layer is 1.3mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 50,000.

[0038] Example 4: The PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film. An anti-glare hardened layer is formed on the thermosetting solvent-based primer layer. The thickness of the anti-glare hardened layer is 3 μm, the thickness of the thermosetting solvent-based primer layer is 2 μm, and the thickness of the transparent base film is 40 μm. The amine value of the thermosetting solvent-based primer layer is 1 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 100,000.

[0039] Example 5, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 2μm, the thickness of the thermosetting solvent-based primer layer is 0.05μm, the thickness of the transparent base film is 30μm, the amine value of the thermosetting solvent-based primer layer is 0.6mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 50,000.

[0040] Example 6, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 6μm, the thickness of the thermosetting solvent-based primer layer is 3μm, the thickness of the transparent base film is 80μm, the amine value of the thermosetting solvent-based primer layer is 0.6mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 50,000.

[0041] Example 7, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 4 μm, the thickness of the thermosetting solvent-based primer layer is 1.5 μm, the thickness of the transparent base film is 50 μm, the amine value of the thermosetting solvent-based primer layer is 0.6 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 50,000.

[0042] In comparative example 1, the PMMA anti-glare hardened film only includes a PMMA base film and an anti-glare hardened layer formed on the PMMA base film, the thickness of the anti-glare hardened layer is 3 μm, and the thickness of the transparent base film is 40 μm.

[0043] In comparative example 2, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 4 μm, the thickness of the thermosetting solvent-based primer layer is 1.5 μm, the thickness of the transparent base film is 50 μm, the amine value of the thermosetting solvent-based primer layer is 0.3 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 20,000.

[0044] Comparative Example 3: The PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film. An anti-glare hardened layer is formed on the thermosetting solvent-based primer layer. The thickness of the anti-glare hardened layer is 4 μm, the thickness of the thermosetting solvent-based primer layer is 1.5 μm, and the thickness of the transparent base film is 50 μm. The amine value of the thermosetting solvent-based primer layer is 1.5 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 200,000.

[0045] Comparative Example 4, the PMMA anti-glare hardened film includes a PMMA base film and a thermosetting solvent-based primer layer formed on the PMMA base film, an anti-glare hardened layer is formed on the thermosetting solvent-based primer layer, the thickness of the anti-glare hardened layer is 4 μm, the thickness of the thermosetting solvent-based primer layer is 5 μm, the thickness of the transparent base film is 50 μm, the amine value of the thermosetting solvent-based primer layer is 0.6 mmol / g, and the molecular weight of the thermosetting solvent-based primer layer is 50,000.

[0046] The test results of the relevant embodiments are as follows: Table 1 Statistical table of test results of embodiments and comparative examples Example Light transmittance hardness Anti-glare performance Appearance Coating Adhesion Embodiment 1 92.4% 3H √ √ 5B Embodiment 2 91.3% 3H √ √ 5B Embodiment 3 91.8% 3H √ √ 5B Embodiment 4 91.0% 3H √ √ 5B Embodiment 5 92.5% 3H √ √ 5B Embodiment 6 90.8% 3H √ √ 5B Embodiment 7 92.5% 3H √ √ 5B Comparative Example 1 92.6% 3H √ √ 3B Comparative Example 2 91.2% 3H √ √ 4B Comparative Example 3 82.1% 3H √ X 5B Comparative Example 4 91.1% 3H √ √ 4B Through the above examples and comparative examples, it can be found that in the examples with thermosetting solvent-based primer, the anti-glare hardened layer in the PMMA anti-glare hardened film has higher adhesion. In comparative example 1, there is no primer, and the anti-glare hardened film is easier to fall off; in comparative example 2, the amine value of the thermosetting solvent primer is low, and the adhesion is slightly poor; in comparative example 3, the amine value of the thermosetting solvent primer is high, the product appearance is poor, and the transmittance is low; and in comparative example 4, since the thickness of the thermosetting solvent-based primer is greater than 3μm, the adhesion of the anti-glare hardened layer is reduced compared with examples 1 to 7.

[0047] From the foregoing, it can be seen that this application specifically proposes a high-performance PMMA anti-glare hardened film in response to the high requirements for screen display effects in modern display technology. It adopts a three-layer structure design of a base film, a thermosetting solvent-based primer layer and an anti-glare hardened layer stacked from bottom to top, aiming to provide excellent anti-glare performance while ensuring good adhesion between layers.

[0048] The thermosetting solvent-based primer is the key innovation of this application. The amine active functional groups it contains, especially primary amine functional groups, have higher adhesion and reactivity compared with existing technologies. By controlling the amine value within the range of 0.6-1.3mmol / g and the molecular weight within the range of 50,000-150,000, this application not only ensures the stability and coating properties of the primer, but also further improves its bonding with the base film and the anti-glare hardening layer. In particular, the -NH2 active functional groups in the primer are ionically bonded with the polar groups (such as carboxyl and carbonyl) on the surface of the substrate, enhancing the overall adhesion effect.

[0049] As another important component of the present application, the anti-glare hardened layer has a thickness controlled within the range of 2-6 μm and is composed of multiple components such as acrylic resin, solvent, initiator, particles, dispersant and leveling agent. By selecting and optimizing these components, the anti-glare hardened layer not only has excellent anti-glare performance, but also has good wear resistance and weather resistance. In summary, the PMMA anti-glare hardened film provided by the present application has excellent anti-glare performance, strong interlayer adhesion, good wear resistance and weather resistance, and a flexible and changeable preparation process. By introducing a thermosetting solvent-based base coating and a carefully designed anti-glare hardened layer, the present application provides a high-performance PMMA anti-glare hardened film solution.

[0050] The above is only a specific implementation of the present application, and any other improvements made based on the concept of the present application are deemed to be within the protection scope of the present application.

Claims

1. An anti-glare hardened film, characterized in that: The invention comprises a base film, a thermosetting solvent-based primer layer and an anti-glare hardening layer which are sequentially stacked from bottom to top; The thermosetting solvent-based primer layer contains amine-based reactive functional groups.

2. The anti-glare hardened film according to claim 1, characterized in that: The base film is selected from any one of PET, PMMA, PP, TAC or PC. Preferably, the base film is PMMA.

3. The anti-glare hardened film according to claim 1, characterized in that: The amine value of the thermosetting solvent-based primer is in the range of 0.6-1.3 mmol / g, and the molecular weight of the thermosetting solvent-based primer is in the range of 50,000-150,000.

4. The anti-glare hardened film according to claim 1, characterized in that: The amine active functional group is a primary amine functional group.

5. The anti-glare hardened film according to claim 1, characterized in that: The thickness of the anti-glare hardening layer is in the range of 2-6 μm, the thickness of the thermosetting solvent-based primer layer is in the range of 0.05-3 μm, and the thickness of the base film is in the range of 30-80 μm.

6. The anti-glare hardened film according to claim 1, characterized in that: The hardening liquid of the anti-glare hardening layer comprises acrylic resin, solvent, initiator, particles, dispersant and leveling agent.

7. The anti-glare hardened film according to claim 6, characterized in that: The acrylic resin includes at least one of polyurethane-modified acrylic resin, polyester-modified acrylic resin, epoxy-modified acrylic resin, and pure acrylic resin.

8. The anti-glare hardened film according to claim 6, characterized in that: The particles include at least one of aluminum oxide, silicon oxide, titanium dioxide, zirconium dioxide, PMMA, PBMA, and PST.

9. A method for preparing an anti-glare hardened film, characterized in that: The method includes providing a base film layer, coating a thermosetting solvent-based primer layer on the base film layer, drying the thermosetting solvent-based primer layer for the first time, coating an anti-glare hardening composition on the dried thermosetting solvent-based primer layer, drying the anti-glare hardening composition for the second time after coating, and performing ultraviolet curing after the second drying.

10. The anti-glare hardened film according to claim 9, characterized in that: The first drying condition is 1-3 minutes at 80-120°C, the second drying condition is 1-3 minutes at 70-110°C, and the UV curing condition is 80 mj / cm 2 -400mj / cm 2 UV irradiation under conditions of .

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