Circularly polarized eye protection AB glue

Abstract

This invention provides a circular polarizing eye-protecting AB adhesive, relating to the field of adhesive production technology. This circular polarizing eye-protecting AB adhesive is prepared by mixing and stirring component A and component B. Component A consists of the following raw materials: epoxy resin composite; modified epoxy acrylate prepolymer; cholesteric liquid crystal-epoxy hybrid microspheres; fluorescent dye; anti-aging agent; and acid-free optical grade additives. Component B consists of the following raw materials: amine curing agent; dihedral naphthalenedicarboximide derivative containing amine groups; aminosilane coupling agent; polyetheramine accelerator; and triphenyl phosphite anti-yellowing agent. This invention can be widely applied to the protection and optical optimization of various screens such as smartphones, tablets, automotive displays, and wearable devices, and has significant practical value and industrialization prospects.

Description

Technical Field

[0001] This invention relates to the field of adhesive production technology, and more specifically, to a circular polarizing eye-protecting AB adhesive. Background Technology

[0002] With the widespread use of smartphones, tablets, in-vehicle displays, and wearable devices, consumers' demands for screen display quality and eye health protection are increasing. Prolonged use of electronic screens can lead to eye strain, dry eye syndrome, and even blue light-induced retinal damage. As a result, various eye protection products have emerged on the market, such as blue light blocking films, anti-glare films, and polarizing films. However, existing technologies still have several shortcomings: On the one hand, to meet the requirements of high contrast and low reflection, current mainstream OLED screens emit mostly linearly polarized light. The light vector vibration direction of linearly polarized light is unidirectional, which can easily cause ciliary muscle tension and exacerbate visual fatigue when viewed for a long time. Although some products have used quarter-wave plates to convert linearly polarized light into circularly polarized light, traditional wave plates are independent film layer structures, which are thick, have complex bonding processes, and are difficult to integrate with AB adhesive layers.

[0003] On the other hand, most existing blue light blocking films use absorptive dyes or reflective optical films. The former is prone to reduced eye protection due to dye migration, while the latter may cause color shift or decreased light transmittance. In addition, existing AB adhesives are mainly used for structural bonding or touch module bonding. Their formulation design focuses on mechanical properties, curing speed, and weather resistance, and rarely takes into account multiple optical functions such as circular polarization conversion, harmful blue light blocking, antistatic properties, and curing status monitoring.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In view of this, the present invention provides a circular polarizing eye-protecting AB adhesive to solve the aforementioned problems.

[0006] To solve the above problems, the specific technical solution adopted by the present invention is as follows: According to one aspect of the present invention, a circular polarizing eye protection AB adhesive is provided, which is formed by mixing and stirring component A and component B; Component A consists of the following parts by weight of raw materials: 75-100 parts of epoxy resin composite; 10-15 parts of modified epoxy acrylate prepolymer; 8-15 parts of cholesteric phase liquid crystal-epoxy hybrid microspheres; 0.5-1 part fluorescent dye; Anti-aging agent 1.2-2.5 parts; 0.7-2.1 parts of acid-free optical grade additives; Component B consists of the following parts by weight of raw materials: 70-100 parts of amine curing agent; 0.5-2 parts of an amino-containing dihedral naphthalenedicarboximide derivative; 1-3 parts of aminosilane coupling agent; 3-5 parts of polyetheramine accelerator; Triphenyl phosphite anti-yellowing agent 2.5-6 parts.

[0007] Preferably, the epoxy resin composite is composed of the following raw materials in parts by weight: 30-40 parts of bisphenol A epoxy resin, 20-25 parts of aliphatic epoxy resin, and 25-35 parts of polyurethane modified epoxy resin.

[0008] Preferably, the modified epoxy acrylate prepolymer is a hydroxyl-modified bisphenol A type epoxy acrylate with a number average molecular weight of 2000-5000.

[0009] Preferably, the cholesteric liquid crystal-epoxy hybrid microspheres have a core-shell structure and a particle size of 100-300 nm; the core layer of the cholesteric liquid crystal-epoxy hybrid microspheres is cholesteric liquid crystal, and the shell layer is epoxy-modified acrylate polymer.

[0010] Preferably, the fluorescent dye is a reactive blue light selective absorption dye, used to selectively absorb harmful high-energy blue light in the 415-455nm wavelength band.

[0011] Preferably, the anti-aging agent is composed of the following raw materials in parts by weight: 0.5-1 part of benzotriazole UV absorber, 0.5-1 part of hindered amine light stabilizer, and 0.2-0.5 part of sulfone nitroxide free radical.

[0012] Preferably, the acid-free optical grade additive is composed of the following raw materials in parts by weight: 0.3-0.8 parts of polythiophene conductive polymer nanowires, 0.3-0.8 parts of polyacrylate leveling agent, and 0.1-0.5 parts of a type I urea-formaldehyde resin stabilizer.

[0013] Preferably, 70-100 parts of the amine curing agent are composed of the following parts by weight of raw materials: 40-50 parts of polyether amine curing agent, 20-30 parts of alicyclic amine curing agent, and 10-20 parts of methyltetrahydrophthalic anhydride.

[0014] Preferably, the amine-containing diaxial naphthalene dicarboximide derivative is a diaxial naphthalene dicarboximide compound with two active primary amine groups at the end.

[0015] According to another aspect of the present invention, a method for preparing circularly polarized eye-protecting AB adhesive is provided, the method comprising the following steps: S1. Add the epoxy resin composite to the reactor and stir until it is uniform and transparent. Then add the modified epoxy acrylate prepolymer and continue stirring to obtain the matrix resin of component A. S2. Add cholesteric liquid crystal-epoxy hybrid microspheres to the matrix resin of component A, and disperse by stirring to obtain microsphere dispersion resin; S3. Fluorescent dye, anti-aging agent, and acid-free optical grade additive are added sequentially to the microsphere dispersion resin. The mixture is stirred and mixed to obtain a mixture. The mixture is then transferred to a vacuum degassing tank for degassing treatment, discharged, and sealed for storage to obtain component A. S4. Under the protection of dry nitrogen, add polyetheramine curing agent, alicyclic amine curing agent and methyltetrahydrophthalic anhydride into the reaction vessel and mix by stirring to obtain a premixed curing agent; S5. Add the amine-containing dihedral naphthalimide derivative, amine silane coupling agent, polyetheramine accelerator, and triphenyl phosphite anti-yellowing agent to the premixed curing agent in sequence, and obtain the functionalized curing mixture by stirring. S6. Cool the functionalized curing mixture to room temperature, remove moisture by adding molecular sieves, filter and seal for storage to obtain component B. S7. Mix component A and component B according to the preset mass ratio, and form a mixture by stirring and vacuum degassing. Apply the mixture to the preset substrate and cure it to obtain circular polarizing eye protection AB glue.

[0016] The beneficial effects of this invention are as follows: This invention utilizes the synergistic effect of multiple innovative technologies, such as cholesteric liquid crystal microspheres to achieve circular polarization conversion, reactive fluorescent dyes to actively block harmful blue light, a ternary anti-aging system to ensure long-term stability, and dihedral naphthalimide to achieve curing monitoring, to successfully prepare a circular polarizing eye-protecting AB adhesive that is eye-protecting, highly transparent, strongly adhesive, weather-resistant, and process-friendly. It can be widely used for the protection and optical optimization of various screens such as smartphones, tablets, automotive displays, and wearable devices, and has significant practical value and industrialization prospects. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a flowchart illustrating the preparation process of a circular polarizing eye-protecting AB adhesive according to an embodiment of the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0019] According to an embodiment of the present invention, a circular polarizing eye-protecting AB adhesive is provided.

[0020] The present invention will now be further described in conjunction with specific embodiments. According to one embodiment of the present invention, a circular polarizing eye protection AB adhesive is provided, which is formed by mixing and stirring component A and component B. Component A consists of the following parts by weight of raw materials: 75-100 parts of epoxy resin composite; 10-15 parts of modified epoxy acrylate prepolymer; 8-15 parts of cholesteric phase liquid crystal-epoxy hybrid microspheres; 0.5-1 part fluorescent dye; Anti-aging agent 1.2-2.5 parts; 0.7-2.1 parts of acid-free optical grade additives; Component B consists of the following parts by weight of raw materials: 70-100 parts of amine curing agent; 0.5-2 parts of an amino-containing dihedral naphthalenedicarboximide derivative; 1-3 parts of aminosilane coupling agent; 3-5 parts of polyetheramine accelerator; Triphenyl phosphite anti-yellowing agent 2.5-6 parts.

[0021] As a preferred embodiment, the epoxy resin composite is composed of the following raw materials in parts by weight: 30-40 parts of bisphenol A epoxy resin, 20-25 parts of aliphatic epoxy resin, and 25-35 parts of polyurethane modified epoxy resin.

[0022] Specifically, the epoxy value of bisphenol A epoxy resin is set at 0.45~0.52 eq / 100g.

[0023] As a preferred embodiment, the modified epoxy acrylate prepolymer is a hydroxyl-modified bisphenol A type epoxy acrylate with a number average molecular weight of 2000-5000.

[0024] In a preferred embodiment, the cholesteric liquid crystal-epoxy hybrid microspheres have a core-shell structure and a particle size of 100-300 nm; the core layer of the cholesteric liquid crystal-epoxy hybrid microspheres is cholesteric liquid crystal, and the shell layer is epoxy-modified acrylate polymer.

[0025] As a preferred embodiment, the fluorescent dye is a reactive blue light selective absorption dye, used to selectively absorb harmful high-energy blue light in the 415-455nm wavelength band.

[0026] As a preferred embodiment, the anti-aging agent is composed of the following raw materials in parts by weight: 0.5-1 parts of benzotriazole UV absorber, 0.5-1 parts of hindered amine light stabilizer, and 0.2-0.5 parts of sulfone nitroxide free radical.

[0027] As a preferred embodiment, the acid-free optical grade additive is composed of the following raw materials in parts by weight: 0.3-0.8 parts of polythiophene conductive polymer nanowires, 0.3-0.8 parts of polyacrylate leveling agent, and 0.1-0.5 parts of a type I urea-formaldehyde resin stabilizer.

[0028] In a preferred embodiment, 70-100 parts of the amine curing agent are composed of the following parts by weight of raw materials: 40-50 parts of polyether amine curing agent, 20-30 parts of alicyclic amine curing agent, and 10-20 parts of methyltetrahydrophthalic anhydride.

[0029] As a preferred embodiment, the amine-containing diaxial naphthalene dicarboximide derivative is a diaxial naphthalene dicarboximide compound with two active primary amine groups at the end.

[0030] like Figure 1 As shown, according to another embodiment of the present invention, a method for preparing circular polarizing eye-protecting AB adhesive is provided, the method comprising the following steps: S1. Add the epoxy resin composite to the reactor and stir until it is uniform and transparent. Then add the modified epoxy acrylate prepolymer and continue stirring to obtain the matrix resin of component A. S2. Add cholesteric liquid crystal-epoxy hybrid microspheres to the matrix resin of component A, and disperse by stirring to obtain microsphere dispersion resin; S3. Fluorescent dye, anti-aging agent, and acid-free optical grade additive are added sequentially to the microsphere dispersion resin. The mixture is stirred and mixed to obtain a mixture. The mixture is then transferred to a vacuum degassing tank for degassing treatment, discharged, and sealed for storage to obtain component A. S4. Under the protection of dry nitrogen, add polyetheramine curing agent, alicyclic amine curing agent and methyltetrahydrophthalic anhydride into the reaction vessel and mix by stirring to obtain a premixed curing agent; S5. Add the amine-containing dihedral naphthalimide derivative, amine silane coupling agent, polyetheramine accelerator, and triphenyl phosphite anti-yellowing agent to the premixed curing agent in sequence, and obtain the functionalized curing mixture by stirring. S6. Cool the functionalized curing mixture to room temperature, remove moisture by adding molecular sieves, filter and seal for storage to obtain component B. S7. Mix component A and component B according to the preset mass ratio, and form a mixture by stirring and vacuum degassing. Apply the mixture to the preset substrate and cure it to obtain circular polarizing eye protection AB glue.

[0031] To better illustrate the technical effects of the present invention, the following different embodiments, comparative examples, and experiments are provided: Example 1

[0032] The circular polarizing eye-protecting AB adhesive of this embodiment 1 is made by mixing and stirring component A and component B in a mass ratio of 1:0.3; Component A consists of the following raw materials in parts by weight: 75g epoxy resin composite; 10g modified epoxy acrylate prepolymer; 8g cholesteric liquid crystal-epoxy hybrid microspheres; 0.5g reactive blue light selective absorption dye; 1.2g anti-aging agent; and 0.7g acid-free optical grade additives. The epoxy resin composite is composed of the following raw materials in parts by weight: 30g of bisphenol A epoxy resin, 20g of aliphatic epoxy resin, and 25g of polyurethane modified epoxy resin. The anti-aging agent is composed of the following raw materials in parts by weight: 0.5g of benzotriazole UV absorber, 0.5g of hindered amine light stabilizer, and 0.2g of sulfone nitroxide free radicals; The acid-free optical grade additive is composed of the following raw materials in parts by weight: 0.3 g of polythiophene conductive polymer nanowires, 0.3 g of polyacrylate leveling agent, and 0.1 g of urea-formaldehyde resin stabilizer; Component B consists of the following raw materials in parts by weight: 70g amine curing agent; 0.5g amine-containing dihedral naphthalenedicarboximide derivative; 1g amine silane coupling agent; 3g polyether amine accelerator; 2.5g triphenyl phosphite anti-yellowing agent; The amine curing agent is composed of the following raw materials in parts by weight: 40g of polyether amine curing agent, 20g of alicyclic amine curing agent, and 10g of methyltetrahydrophthalic anhydride. The preparation method of the circular polarizing eye-protecting AB adhesive in Example 1 includes the following steps: S1. Under an environment of 23±2℃ and relative humidity ≤40%, the epoxy resin composite is added to a reactor with nitrogen protection and temperature control system according to the mass fraction. The temperature is raised to 60℃ and stirred at a low speed of 400r / min until it is uniform and transparent. Then, the modified epoxy acrylate prepolymer is added and stirred for 35min until it is completely miscible to obtain the matrix resin of component A. S2. Reduce the temperature of the reaction vessel system to 40℃, add cholesteric liquid crystal-epoxy hybrid microspheres to the matrix resin of component A under nitrogen protection, and stir at a low speed of 500r / min for 50min until the cholesteric liquid crystal-epoxy hybrid microspheres are uniformly monodispersed, without agglomeration or shell breakage, to obtain microsphere dispersion resin. S3. Add reactive blue light selective absorption dye, anti-aging agent, and acid-free optical grade additive to the microsphere dispersion resin in sequence. Maintain 60℃ and disperse at 1000r / min for 25min until the system is uniform and there are no visible particles. Then cool down to 40℃ and degas under vacuum controlled at ≤-0.095MPa for 35min. After discharge, filter through a 0.45μm optical grade filter membrane, and store in a nitrogen-filled, light-proof, and sealed container to obtain component A. S4. Under dry nitrogen protection and in a light-proof environment at 30°C, add polyetheramine curing agent, alicyclic amine curing agent, and methyltetrahydrophthalic anhydride to a sealed reactor according to the mass fractions, and stir at a low speed of 250 r / min for 10 min until uniform to obtain a premixed curing agent. S5. Add the amine-containing dihedral naphthalimide derivative, amine silane coupling agent, polyetheramine accelerator, and triphenyl phosphite anti-yellowing agent to the premixed curing agent in sequence, and stir at a medium speed of 600 r / min for 35 min until clear and transparent to obtain a functionalized curing mixture. S6. Cool the functionalized curing mixture to room temperature, and then dehydrate it through activated 3A molecular sieve. After filtration through a 0.22μm optical grade filter membrane, store it under nitrogen-filled positive pressure to obtain component B. S7. Weigh and mix component A and component B at a mass ratio of 1:0.3. Stir at 400 r / min for 8 min under a vacuum of ≤-0.095 MPa until completely homogeneous and simultaneously degas to obtain a mixed colloid. Coat the mixed colloid onto the surface of a tempered glass substrate with a coating thickness of 50 μm. Use a stepped curing process: first pre-cur at room temperature of 30℃ for 18 min, then cure at medium temperature of 65℃ for 25 min, and finally cure at 80℃ for 12 min. After curing, the circular polarizing eye protection AB adhesive of this embodiment is obtained. Example 2

[0033] The circular polarizing eye-protecting AB adhesive of this embodiment is made by mixing and stirring component A and component B in a mass ratio of 1:0.3; Component A consists of the following raw materials in parts by weight: 87.5g epoxy resin composite; 12.5g modified epoxy acrylate prepolymer; 11.5g cholesteric liquid crystal-epoxy hybrid microspheres; 0.75g reactive blue light selective absorption dye; 1.85g anti-aging agent; and 1.4g acid-free optical grade additives. The epoxy resin composite is composed of the following raw materials in parts by weight: 35g of bisphenol A epoxy resin, 22.5g of aliphatic epoxy resin, and 30g of polyurethane modified epoxy resin. The anti-aging agent is composed of the following raw materials in parts by weight: 0.75g of benzotriazole UV absorber, 0.75g of hindered amine light stabilizer, and 0.35g of sulfone nitroxide free radicals; The acid-free optical grade additive is composed of the following raw materials in parts by weight: 0.55g of polythiophene conductive polymer nanowires, 0.55g of polyacrylate leveling agent, and 0.3g of urea-formaldehyde resin stabilizer; Component B consists of the following raw materials in parts by weight: 85 g of amine curing agent; 1.25 g of amine-containing dihedral naphthalenedicarboximide derivative; 2 g of amine silane coupling agent; 4 g of polyether amine accelerator; and 4.25 g of triphenyl phosphite anti-yellowing agent. The amine curing agent is composed of the following raw materials in parts by weight: 45g of polyether amine curing agent, 25g of alicyclic amine curing agent, and 15g of methyltetrahydrophthalic anhydride. The preparation method of the circular polarizing eye protection AB glue in Example 2 is completely consistent with that in Example 1. Example 3

[0034] The circular polarizing eye-protecting AB adhesive of this embodiment 3 is made by mixing and stirring component A and component B in a mass ratio of 1:0.3; Component A consists of the following raw materials in parts by weight: 100 g epoxy resin composite; 15 g modified epoxy acrylate prepolymer; 15 g cholesteric liquid crystal-epoxy hybrid microspheres; 1 g reactive blue light selective absorption dye; 2.5 g anti-aging agent; 2.1 g acid-free optical grade additives; The epoxy resin composite is composed of the following raw materials in parts by weight: 40g of bisphenol A epoxy resin, 25g of aliphatic epoxy resin, and 35g of polyurethane modified epoxy resin. The anti-aging agent is composed of the following raw materials in parts by weight: 1g of benzotriazole UV absorber, 1g of hindered amine light stabilizer, and 0.5g of sulfone nitroxide free radicals; The acid-free optical grade additive is composed of the following raw materials in parts by weight: 0.8g of polythiophene conductive polymer nanowires, 0.8g of polyacrylate leveling agent, and 0.5g of urea-formaldehyde resin stabilizer; Component B consists of the following raw materials in parts by weight: 100g amine curing agent; 2g amine-containing dihedral naphthalenedicarboximide derivative; 3g amine silane coupling agent; 5g polyether amine accelerator; 6g triphenyl phosphite anti-yellowing agent; The amine curing agent is composed of the following raw materials in parts by weight: 50g of polyether amine curing agent, 30g of alicyclic amine curing agent, and 20g of methyltetrahydrophthalic anhydride. The preparation method of the circular polarizing eye protection AB glue in Example 3 is completely the same as that in Example 1.

[0035] Comparative Example This comparative example of circular polarizing eye-protecting AB glue is made by mixing and stirring component A and component B in a mass ratio of 1:0.3. The AB glue in this comparative example is made by mixing and stirring component A and component B at a mass ratio of 1:0.3. Component A consists of the following raw materials in parts by weight: 87.5g epoxy resin composite; 12.5g modified epoxy acrylate prepolymer; 0.75g reactive blue light selective absorption dye; 1.85g anti-aging agent; and 1.4g acid-free optical grade additives. Component B consists of the following raw materials in parts by weight: 85g of amine curing agent; 1.25g of amine-containing dihedral naphthalenedicarboximide derivative; 2g of amine silane coupling agent; 4g of polyether amine accelerator; and 4.25g of triphenyl phosphite anti-yellowing agent. The amine curing agent is composed of the following raw materials in parts by weight: 45g of polyether amine curing agent, 25g of alicyclic amine curing agent, and 15g of methyltetrahydrophthalic anhydride. The preparation method of the circularly polarized eye-protecting AB glue in this comparative example is completely consistent with the steps in Example 2.

[0036] The AB adhesives obtained in Examples 1, 2, 3 and the comparative example were coated onto standard optical testing tempered glass substrates and ABS plastic substrates using the same process. After curing, standard test samples were prepared. Five parallel samples were prepared for each group of samples, and the average value of the test results was taken. The experimental results are shown in Table 1. The optical eye protection performance test includes: using an ellipsometry to test the average circular polarization conversion efficiency of the entire visible light band from 400 to 700 nm; using an ultraviolet-visible spectrophotometer to test the average blue light blocking rate of the band from 415 to 455 nm; testing the transmittance at a wavelength of 550 nm according to GB / T2410-2008; and testing the haze value of the sample according to GB / T2410-2008.

[0037] Mechanical bonding performance tests include: testing the tensile shear strength of ABS plastic substrates according to GB / T7124-2008; and testing the peel strength of PET optical films according to GB / T2792-2014.

[0038] Long-term reliability testing includes: placing the sample in a dual 85 humidity and heat test chamber (85℃, 85%RH) for 1000 hours and testing the change in yellowing index ΔYI; and testing the retention rate of circular polarization conversion efficiency after the sample is subjected to 500 cycles of cold and heat from -40℃ to 120℃.

[0039] Table 1. Experimental results of Examples 1, 2, 3 and Comparative Example 1

[0040] Specifically, in terms of eye protection performance, Examples 1-3 all achieved excellent circularly polarized light conversion effects. Among them, Example 2, with its intermediate ratio, exhibited the best performance, achieving an average circularly polarized light conversion efficiency of 98.5% across the entire wavelength band. This efficiently converts linearly polarized light from the screen into circularly polarized light close to natural light, thus achieving the eye protection goal of this invention. Comparative Example 1, lacking the core functional component cholesteric liquid crystal-epoxy hybrid microspheres, had no circularly polarized light conversion capability and therefore lacked the core eye protection function of this invention. Simultaneously, Examples 1-3 maintained a high transmittance of ≥93% and a low haze of ≤0.8%, achieving a balance between eye protection and optical display performance, without image blurring or color shift issues. Regarding basic adhesion performance, the shear strength and peel strength of Examples 1-3 met the industry standards for optical adhesives used in displays, showing no significant difference from Comparative Example 1. This indicates that the core functional component added in this invention did not negatively impact the basic adhesion performance of the adhesive layer, achieving a synergistic effect between optical function and adhesion performance. In terms of long-term reliability, after 1000 hours of double 85 damp heat test, the yellowing ΔYI of Examples 1-3 was ≤1.5, and the circular polarization conversion efficiency retention rate was ≥95% after 500 cycles of cold and heat. This shows that the formulation system of the present invention can effectively protect the core functional components and ensure the long-term stability of the eye protection function.

[0041] In summary, by utilizing the above-mentioned technical solutions of this invention, this invention achieves a synergistic effect of multiple innovative technologies, including cholesteric liquid crystal microspheres for circular polarization conversion, reactive fluorescent dyes for active blocking of harmful blue light, a ternary anti-aging system for ensuring long-term stability, and dihedral naphthalimide for curing monitoring. This results in the successful preparation of a circularly polarized eye-protecting AB adhesive that is eye-friendly, highly transparent, strongly adhesive, weather-resistant, and process-friendly. It can be widely used for the protection and optical optimization of various screens such as smartphones, tablets, automotive displays, and wearable devices, demonstrating significant practical value and industrialization prospects.

[0042] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. 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 circular polarizing eye-protecting AB adhesive, characterized in that, This circular polarizing eye-protecting AB adhesive is made by mixing and stirring component A and component B; Component A consists of the following parts by weight of raw materials: 75-100 parts of epoxy resin composite; 10-15 parts of modified epoxy acrylate prepolymer; 8-15 parts of cholesteric phase liquid crystal-epoxy hybrid microspheres; 0.5-1 part fluorescent dye; Anti-aging agent 1.2-2.5 parts; 0.7-2.1 parts of acid-free optical grade additives; Component B consists of the following parts by weight of raw materials: 70-100 parts of amine curing agent; 0.5-2 parts of an amino-containing dihedral naphthalenedicarboximide derivative; 1-3 parts of aminosilane coupling agent; 3-5 parts of polyetheramine accelerator; Triphenyl phosphite anti-yellowing agent 2.5-6 parts.

2. The circular polarizing eye-protecting AB adhesive according to claim 1, characterized in that, The epoxy resin composite is composed of the following raw materials in parts by weight: 30-40 parts of bisphenol A epoxy resin, 20-25 parts of aliphatic epoxy resin, and 25-35 parts of polyurethane modified epoxy resin.

3. The circular polarizing eye-protecting AB adhesive according to claim 2, characterized in that, The modified epoxy acrylate prepolymer is a hydroxyl-modified bisphenol A type epoxy acrylate with a number average molecular weight of 2000-5000.

4. The circular polarizing eye-protecting AB adhesive according to claim 1, characterized in that, The cholesteric liquid crystal-epoxy hybrid microspheres have a core-shell structure and a particle size of 100-300 nm. The core layer of the cholesteric liquid crystal-epoxy hybrid microspheres is cholesteric liquid crystal, and the shell layer is epoxy-modified acrylate polymer.

5. The circular polarizing eye-protecting AB adhesive according to claim 1, characterized in that, The fluorescent dye is a reactive blue light selective absorption dye, used to selectively absorb harmful high-energy blue light in the 415-455nm wavelength band.

6. The circular polarizing eye-protecting AB adhesive according to claim 1, characterized in that, The anti-aging agent is composed of the following raw materials in parts by weight: 0.5-1 parts of benzotriazole UV absorber, 0.5-1 parts of hindered amine light stabilizer, and 0.2-0.5 parts of sulfone nitroxide free radical.

7. The circular polarizing eye-protecting AB adhesive according to claim 2, characterized in that, The acid-free optical grade additive is composed of the following raw materials in parts by weight: 0.3-0.8 parts of polythiophene conductive polymer nanowires, 0.3-0.8 parts of polyacrylate leveling agent, and 0.1-0.5 parts of a type I urea-formaldehyde resin stabilizer.

8. The circular polarizing eye-protecting AB adhesive according to claim 5, characterized in that, The amine curing agent, in 70-100 parts by weight, is composed of the following raw materials in parts by weight: 40-50 parts of polyether amine curing agent, 20-30 parts of alicyclic amine curing agent, and 10-20 parts of methyltetrahydrophthalic anhydride.

9. The circular polarizing eye-protecting AB adhesive according to claim 8, characterized in that, The amine-containing diaxial naphthalene dicarboximide derivative is a diaxial naphthalene dicarboximide compound with two active primary amine groups at the end.

10. A method for preparing a circularly polarized eye-protecting AB adhesive, used to achieve the preparation of the circularly polarized eye-protecting AB adhesive as described in claims 1-9, characterized in that, The preparation method includes the following steps: S1. Add the epoxy resin composite to the reactor and stir until it is uniform and transparent. Then add the modified epoxy acrylate prepolymer and continue stirring to obtain the matrix resin of component A. S2. Add cholesteric liquid crystal-epoxy hybrid microspheres to the matrix resin of component A, and disperse by stirring to obtain microsphere dispersion resin; S3. Fluorescent dye, anti-aging agent, and acid-free optical grade additive are added sequentially to the microsphere dispersion resin. The mixture is stirred and mixed to obtain a mixture. The mixture is then transferred to a vacuum degassing tank for degassing treatment, discharged, and sealed for storage to obtain component A. S4. Under the protection of dry nitrogen, add polyetheramine curing agent, alicyclic amine curing agent and methyltetrahydrophthalic anhydride into the reaction vessel and mix by stirring to obtain a premixed curing agent; S5. Add the amine-containing dihedral naphthalimide derivative, amine silane coupling agent, polyetheramine accelerator, and triphenyl phosphite anti-yellowing agent to the premixed curing agent in sequence, and obtain the functionalized curing mixture by stirring. S6. Cool the functionalized curing mixture to room temperature, remove moisture by adding molecular sieves, filter and seal for storage to obtain component B. S7. Mix component A and component B according to the preset mass ratio, and form a mixture by stirring and vacuum degassing. Apply the mixture to the preset substrate and cure it to obtain circular polarizing eye protection AB glue.

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