A method for automatically repairing a surface-scratched prism sheet

Abstract

This invention relates to the field of prism sheet technology, specifically to a method for automatically repairing prism sheets with surface scratches. By improving the nanocapsule production process and adopting more economical preparation methods, production costs are reduced, resulting in self-healing prism sheets with lower production costs and better market competitiveness. By finding more suitable material combinations to improve the adhesion and toughness of the nanocapsules, the method avoids the situation where the nanocapsules break and lose their self-healing ability when subjected to large forces. Furthermore, by employing higher precision equipment and technology, as well as more stringent quality control management, the technical difficulty and control precision of the nanocapsule automatic repair technology are increased. This addresses the technical problems of high production costs and insufficient adhesion of existing nanocapsules due to the need for high-precision equipment and technology in their production process.

Description

Technical Field

[0001] This invention relates to the field of prism sheet technology, and in particular to a method for automatically repairing prism sheets with surface scratches. Background Technology

[0002] Automated repair technology is an emerging technology primarily applied in various high-tech fields, such as automobiles, aircraft, and electronic equipment. Among these, the production of optical films is also a significant application area for automated repair technology.

[0003] During the production of traditional optical films, scratches or defects often occur due to external environmental factors and human error. These defects affect the performance and quality of the optical films, reducing the market value of the products. However, automatic repair technology can effectively solve this problem without human intervention, making the production process more efficient, precise, and stable.

[0004] The self-healing technology relies on nanocapsules, which possess a certain degree of elasticity and self-repairing capabilities. When a capsule is subjected to external impact, the repair fluid inside quickly flows to the scratch, filling the gap and performing self-repair. Therefore, incorporating nanocapsules into materials during the production of optical films can achieve this self-healing effect. Furthermore, appropriately adjusting the ratio and mixing method of nanocapsules and materials can also improve the product's performance and durability.

[0005] Currently, self-healing technology has been applied in multiple fields. For example, automakers use self-healing paints in their production processes; these paints have self-repairing capabilities, allowing vehicle surfaces to regain their original appearance. In the field of optics, self-healing technology is applied to products such as eyeglasses, camera lenses, and optical films, improving product quality and performance.

[0006] In summary, auto-repair technology is an emerging technology based on nanocapsules. It is characterized by high efficiency, precision, and stability, and can significantly improve product quality and performance. It has broad application prospects in various fields.

[0007] Currently, the production speed of prism membranes on the market is somewhat constrained by the problem of irreparable scratches. Therefore, introducing self-healing technology will significantly enhance the competitiveness of this product. The key lies in the structural surface design of the incorporated nanocapsules, which need to be uniformly distributed on the membrane surface and able to withstand the extrusion and cutting operations of conventional processing. Furthermore, the filling of the repair fluid after capsule rupture requires precise control, needing good adhesion and self-leveling properties to ensure the quality and stability of the repair effect. Therefore, the production of nanocapsules requires high-precision equipment and technology, resulting in high production costs. In practical applications, it has been found that when nanocapsules encounter significant forces, they rupture and lose their self-healing ability. Therefore, it is necessary to find more suitable materials to give nanocapsules better adhesion and toughness. Summary of the Invention

[0008] The purpose of this invention is to provide a method for automatically repairing prism sheets with surface scratches, which solves the technical problems of high production costs and insufficient adhesion of nanocapsules caused by the need for high-precision equipment and technology in the production process of existing nanocapsules.

[0009] To achieve the above objectives, the present invention provides a method for automatically repairing prism sheets with surface scratches, comprising the following steps:

[0010] Preparation steps: Prepare materials such as polyester film, siloxane, silicone materials, and self-healing fluid. Ensure all materials and equipment are clean and dry.

[0011] S101. Cut the polyester film to the required size, generally 50 micrometers thick, to ensure a smooth surface and uniform thickness.

[0012] S102. Add 0.1 μm and 0.2 μm thick siloxane additional layers to the upper side of the substrate layer and the lower side of the prism layer, respectively, to improve surface smoothness and adhesion.

[0013] S103. Using microencapsulation technology, microcapsules are made between the substrate layer and the upper surface additional layer and a self-healing fluid is injected.

[0014] S104. A 1.5-micron-thick silicone adhesive layer is added between the microcapsule layer and the upper surface additional layer, allowing it to cure naturally and enhancing its strength and stability.

[0015] S105. After completing the microcapsule layer, apply self-healing liquid to the upper surface of the self-healing membrane to allow it to fully penetrate and fill the surface damage, and achieve the self-healing function.

[0016] S106. Clean the self-healing membrane, remove impurities and dirt, and dry and encapsulate it in a dust-free environment;

[0017] S107. Use high-precision testing tools to check the repair effect, and perform visual inspection and instrument testing on its shape, size, position, color, etc. Ensure that the product can be used normally and effectively achieve its self-repair function.

[0018] The specific steps for fabricating the microcapsule layer are as follows: A polymer and solvent are mixed in a 1:3 mass ratio to form a mixture; a crosslinking agent is added to form a gel-like substance; the gel-like substance is dispersed into small particles to obtain polymer particles with specific properties and morphology; the necessary materials and equipment are prepared; the polymer particles are dissolved in a suitable solvent; a dispersant is added and stirred until homogeneous; a polymer solution is obtained; the polymer solution is injected into an electro-sprayer; the operating parameters of the electro-sprayer are adjusted to obtain microcapsules of appropriate size and shape; the size and morphology of the microcapsules are observed to ensure they meet the requirements; temperature-controlled bonding is ensured to guarantee the adhesion between the microcapsules, the substrate layer, and the additional layer; the position is controlled and the liquid is injected; the self-healing liquid is injected into the microcapsule layer to ensure sufficient penetration and uniform distribution of the liquid.

[0019] The polymer used is a polyetherketone polymer, the solvent used is toluene, and the crosslinking agent used is an organic peroxide crosslinking agent, with an addition amount of 0.1% to 5%.

[0020] The method of bonding the microcapsules to the membrane is as follows: prepare the required crosslinking agent or biomimetic material, coat the crosslinking agent or biomimetic material on the surface of the substrate membrane, and evenly lay the microcapsules on it. Adjust the parameters of the crosslinking agent or biomimetic material to control the bonding method and strength between the microcapsules and the substrate membrane, so as to achieve better adhesion and stability.

[0021] The filling step of the self-healing liquid is as follows: preparing capsule particles, mixing the prepared capsule particles with the self-healing liquid, adding an appropriate amount of surfactant and a small amount of molten medical polycaprolactam (PA6) during the mixing process, heating the resulting mixture to a temperature above the melting point, slowly cooling the molten mixture to form solid particles, and using the solid particles of the prepared self-healing liquid to fill the scratches as needed.

[0022] The capsule particles are prepared using an electrospray method or a microfluidic method.

[0023] During the heating process, the mixture needs to be kept at a certain temperature for a period of time to ensure that the self-healing solution inside the capsule particles is fully mixed with PA6.

[0024] This invention discloses a method for automatically repairing prism sheets with surface scratches. By improving the nanocapsule production process and adopting a more economical preparation method, production costs are reduced, resulting in self-repairing prism sheets with lower production costs and better market competitiveness. By finding more suitable material combinations to improve the adhesion and toughness of the nanocapsules, the method avoids the situation where the nanocapsules break and lose their self-repairing ability when subjected to large forces. Furthermore, by employing higher precision equipment and technology, as well as more stringent quality control management, the technical difficulty and control precision of the nanocapsule automatic repair technology are increased. This addresses the technical problems of high production costs and insufficient adhesion of existing nanocapsules, which require high-precision equipment and technology in the production process. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a flowchart illustrating the method for automatically repairing prism sheets with surface scratches according to the first embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the self-healing prism sheet according to the first embodiment of the present invention.

[0028] In the diagram: 101 - Substrate layer, 102 - Upper surface additional layer, 103 - Adhesive layer, 104 - Microcapsule layer, 105 - Lower surface additional layer, 106 - Prism layer Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0030] First embodiment:

[0031] Please see Figure 1 and Figure 2 , Figure 1 This is a flowchart illustrating the method for automatically repairing surface scratches on a prism sheet according to the first embodiment. Figure 2 This is a schematic diagram of the structure of a self-healing prism sheet according to the first embodiment of the present invention. The present invention provides a method for automatically repairing surface scratches on a prism sheet, comprising the following steps:

[0032] Preparation steps: Prepare materials such as polyester film, siloxane, silicone materials, and self-healing fluid. Ensure all materials and equipment are clean and dry.

[0033] S101. Cut the polyester film to the required size, generally 50 micrometers thick, to ensure a smooth surface and uniform thickness.

[0034] S102. Add 0.1 μm and 0.2 μm thick siloxane additional layers to the upper side of the substrate layer and the lower side of the prism layer, respectively, to improve surface smoothness and adhesion.

[0035] S103. Using microencapsulation technology, microcapsules are made between the substrate layer and the upper surface additional layer and a self-healing fluid is injected.

[0036] S104. A 1.5-micron-thick silicone adhesive layer is added between the microcapsule layer and the upper surface additional layer, allowing it to cure naturally and enhancing its strength and stability.

[0037] S105. After completing the microcapsule layer, apply self-healing liquid to the upper surface of the self-healing membrane to allow it to fully penetrate and fill the surface damage, and achieve the self-healing function.

[0038] S106. Clean the self-healing membrane, remove impurities and dirt, and dry and encapsulate it in a dust-free environment;

[0039] S107. Use high-precision testing tools to check the repair effect, and perform visual inspection and instrument testing on its shape, size, position, color, etc. Ensure that the product can be used normally and effectively achieve its self-repair function.

[0040] In this embodiment, the thickness of the substrate layer is generally 50 μm. The purpose of adding the additional layer is to improve surface smoothness and adhesion. The method of adding the additional layer is vacuum evaporation, in which a siloxane solid material is placed in a vacuum chamber and heated by a radiation source such as ultraviolet light or an electron beam, causing it to evaporate and deposit on the surface of the substrate layer to form the additional layer. The adhesive layer can enhance strength and stability. When applying the self-healing liquid to the surface of the self-healing film, care should be taken to maintain the consistency of the coating thickness, and the coating should be allowed to dry on a suspended and rotating platform. During visual inspection and instrument testing, the shape, size, position, and color of the self-healing film need to be checked and tested. After testing, verification is also required. During verification, a series of key performance indicators need to be considered, such as surface uniformity, mechanical stress performance, and self-healing effect, including testing methods such as microscopes, infrared spectrometers, and mechanical performance testers. Only through comprehensive testing and verification can the reliability and stability of the self-healing technology be ensured. After verification, if the self-healing technology is reliable and stable, it can be promoted. If the self-healing technology can be successfully developed and promoted, it will bring important development opportunities and potential to the field of optics. Potential future applications include prism films, optical glass, and lenses, showing considerable potential in improving product quality and reducing maintenance costs. However, it is crucial to carefully adjust and optimize different manufacturing processes, materials, and performance indicators according to actual needs. When testing self-healing films, tests on abrasion resistance, antistatic properties, antireflective properties, and self-healing performance are required.

[0041] The experimental data are as follows:

[0042] Serial Number Item Unit Specifications Test equipment Test Method Test Result 1 Abrasion resistance test μm <0.1μm Taber Wear Tester Before the experiment, the surface roughness was measured as an initial reference value. The diaphragm was placed in the testing instrument, and appropriate wear pressure, wear cycle, and abrasive type were set. Multiple reciprocating wear cycles were performed, and the surface morphology and changes of the diaphragm were observed and recorded after each cycle. After the wear was completed, the surface roughness of the diaphragm was measured again, and the difference from the initial value was compared. OK 2 Antistatic test Ω <10^13Ω Impedance tester Start the impedance tester to begin measurement. Depending on the specific instrument model and interface, select the appropriate measurement mode and press the start test button or perform the corresponding operation. The impedance tester will automatically measure the impedance of the circuit under test and display the measurement results. Observe and record the displayed impedance value, as well as any possible phase difference or other relevant parameters. <10^13Ω 3 Anti-reflection performance test % Light transmittance: ≥95%; Reflectance: ≤2% Spectrometers Prepare the spectral measurement instrument, ensuring calibration and stability. Place films with upper and lower surface additional layers and films without additional layers in the beam path. Measure the light transmittance and reflectance for both cases and plot the spectral curves. Compare the light transmission efficiency at different wavelengths for both cases to evaluate the effect of the additional layers on anti-reflection performance. Light transmittance: 98%; Reflectance: 1.1-2% 4 Self-healing performance experiment Even after self-repair, it can still reach the original performance level. microscope Small scratches, cracks, or damages are created on the membrane, and the self-healing process is observed. The damaged area can be observed using a microscope, and the release and repair time and effectiveness of the self-healing fluid can be recorded. Performance tests, such as optical transmittance tests or mechanical strength tests, can also be used to assess whether the repaired membrane has recovered to its original performance level. OK

[0043] Abrasion resistance testing: The purpose of abrasion resistance testing is to evaluate the resistance of materials or coatings to wear and friction in real-world applications by simulating wear and friction, so as to provide guidance for material selection and product design optimization.

[0044] Antistatic test: <10^13Ω means that the material's resistance is less than 10^13 ohms (Ω), that is, below 10 megaohms. In the field of antistatics, this range is generally considered to be one of the ranges with good antistatic performance. A lower resistance value means that the material or equipment has better conductivity, which can more effectively release static charge to the ground, reduce static electricity accumulation, and prevent electrostatic discharge.

[0045] Anti-reflection performance test: Light transmittance: For films with anti-reflective coatings, light transmittance is typically higher than 95%, meaning that more than 95% of light can pass through the material. Transmittance also varies depending on the wavelength. Reflectance: The reflectance of films with anti-reflective coatings is typically between 0.2% and 2%, meaning that only 0.2% to 2% of light is reflected back. This implies that most light can pass through the material without being reflected back.

[0046] Self-healing performance testing aims to evaluate the self-healing capabilities of materials or equipment and to study their self-healing mechanisms, providing a basis for the optimized development of self-healing materials. This helps to achieve self-repair of materials or equipment, extend their service life, reduce maintenance costs, and promote the application of self-healing materials in various fields.

[0047] The specific steps for fabricating the microcapsule layer are as follows: A polymer and solvent are mixed in a 1:3 mass ratio to form a mixture; a crosslinking agent is added to form a gel-like substance; the gel-like substance is dispersed into small particles to obtain polymer particles with specific properties and morphology; the necessary materials and equipment are prepared; the polymer particles are dissolved in a suitable solvent; a dispersant is added and stirred until homogeneous; the polymer solution is then injected into an electrosprayer; the operating parameters of the electrosprayer are adjusted to obtain microcapsules of appropriate size and shape; the size and morphology of the microcapsules are observed to ensure they meet requirements; temperature-controlled bonding is ensured to guarantee the adhesion between the microcapsules, the substrate layer, and the additional layer; the position is controlled and the liquid is injected; the self-healing solution is injected. To ensure sufficient liquid penetration and uniform distribution within the microcapsule layer, the gel-like substance is dispersed into small particles using mechanical force or other methods, such as spray drying or concentration. To guarantee uniform particle distribution, techniques such as ultrasonic waves can be used to emulsify the polymer particles. Simultaneously, to ensure the capsule particles can withstand the extrusion and cutting operations during conventional processing, polymer materials with good elasticity and toughness must be selected, such as acrylate polymers, carbon fiber reinforced plastics, polyurethane polymers, and polyetherketone polymers. The size of the prepared microcapsules is generally maintained at around 180 μm. If the size and morphology of the prepared microcapsules do not meet the requirements, the operating parameters of the electro-sprayer can be adjusted appropriately before further preparation.

[0048] Secondly, the operating parameters of the electro-sprayer are: voltage 1-3 kV, flow rate 0.1-1 mL / h, and distance 10-20 cm, so that the size and morphology of the obtained microcapsules meet the requirements.

[0049] Secondly, the dispersant is hydroxypropyl methylcellulose (HPMC) with a concentration of 0.5%-2% and a mass of 0.05-0.5g. By adjusting parameters such as the concentration, mass, or molecular weight of the dispersant, a better capsule dispersion effect can be achieved. Dispersants with different molecular weights have different dispersion effects on capsules. It is generally recommended to choose a dispersant with a higher molecular weight and better dispersion effect, usually HPMC with a molecular weight of around 100,000.

[0050] Meanwhile, the polymer used is a polyetherketone polymer, the solvent is toluene, and the crosslinking agent is an organic peroxide crosslinking agent, with an addition amount of 0.1% to 5%, so that the obtained capsule particles can withstand the extrusion and cutting operations in conventional processing.

[0051] Furthermore, the bonding method between the microcapsules and the membrane is as follows: prepare the required crosslinking agent or biomimetic material, coat the crosslinking agent or biomimetic material on the surface of the substrate membrane, and evenly lay the microcapsules on it. Adjust the parameters of the crosslinking agent or biomimetic material to control the bonding method and strength between the microcapsules and the substrate membrane to achieve better adhesion and stability. The preparation of the self-healing prism membrane requires comprehensive consideration of many factors, including the adjustment of capsule particle size and shape, the addition and control of dispersant, the control of capsule number and density, and the bonding method between microcapsules and membrane. It requires continuous experimentation and optimization to obtain the ideal self-healing prism membrane.

[0052] Finally, the filling step of the self-healing solution is as follows: prepare capsule particles, mix the prepared capsule particles with the self-healing solution, add an appropriate amount of surfactant and a small amount of molten medical polycaprolactam (PA6) during the mixing process, heat the resulting mixture to a temperature above its melting point, and slowly cool the molten mixture to form solid particles. The prepared solid particles of the self-healing solution are then used to fill scratches as needed. The capsule particles are prepared using an electrospray method or a microfluidic method. During the heating process, the mixture needs to be kept at a certain temperature for a period of time to ensure that the self-healing solution within the capsule particles is fully mixed with the PA6. During the cooling and solidification process of the molten mixture, the liquid-solid phase transition process can be adjusted by controlling parameters such as the cooling rate and temperature to obtain the desired particle morphology and properties. Simultaneously, care must be taken to avoid excessive temperature gradients during cooling, which could lead to uneven internal structure of the self-healing solution particles or even particle cracking. Therefore, it is necessary to carefully control parameters such as cooling rate and temperature during the preparation process to reduce the influence of temperature gradients and ensure that the prepared self-healing fluid particles have good structure and properties. Through the above filling method, the self-healing fluid inside the capsule particles can be quickly released and fill the scratches rapidly. At the same time, due to the addition of surfactants and other substances, the self-healing fluid has better adhesion and self-leveling properties, enabling it to better repair scratches and maintain a good appearance.

[0053] When using the method for automatically repairing surface scratches on a prism sheet according to this embodiment, first prepare materials such as polyester film, siloxane, silicone material, and self-healing liquid, and check whether they meet the requirements. Ensure that all materials and equipment are clean and dry. Then, cut the polyester film to the required size, generally 50μm thick, ensuring a smooth surface and uniform thickness. Add 0.1μm and 0.2μm thick siloxane additional layers to the upper side of the substrate layer and the lower side of the prism layer, respectively, to improve surface smoothness and adhesion. The method for adding the additional layers is vacuum evaporation. A siloxane solid material is placed in a vacuum chamber and heated by a radiation source such as ultraviolet light or an electron beam, causing it to evaporate and deposit onto the surface of a substrate layer to form an additional layer. This forms a microcapsule layer. Using microencapsulation technology, tiny capsules are created between the substrate layer and the lower surface additional layer, and a self-healing fluid is injected. A 1.5 μm thick silicone adhesive layer is added between the microcapsule layer and the upper surface additional layer, allowing it to cure naturally and enhancing strength and stability. After completing the microcapsule layer, the self-healing fluid is applied to the upper surface of the self-healing membrane, allowing it to fully penetrate and fill surface damage, thus achieving self-repair. During application, care must be taken to maintain a consistent coating thickness. The coating is allowed to dry on a suspended and rotating platform. The self-healing membrane is then cleaned to remove impurities and dirt, and dried and encapsulated in a dust-free environment. High-precision testing tools are used to check the repair effect, and visual inspection and instrumental testing are performed on its shape, size, position, and color. To ensure the product functions properly and effectively achieves its self-healing function, testing and verification of the self-healing technology requires consideration of a series of key performance indicators, such as surface uniformity, mechanical stress performance, and self-healing effect. Testing methods include microscopy, infrared spectroscopy, and mechanical property testing instruments. Only through comprehensive testing and verification can the reliability and stability of the self-healing technology be ensured. The specific preparation steps of the microcapsule layer are as follows: An acrylate polymer capsule material is selected and dissolved in an appropriate solvent. A suitable process for controlling capsule size is established, such as by adjusting parameters like solution concentration and flow rate. Temperature-controlled adhesion is ensured to guarantee the adhesion between the capsule and the substrate layer and the additional layer. Positioning and liquid injection are controlled, injecting the self-healing liquid into the microcapsules, ensuring full penetration and uniform distribution of the liquid.

[0054] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A method for automatically repairing surface scratches on a prism sheet, comprising the following steps: Preparation steps: Prepare polyester film, siloxane, silicone materials, and self-healing fluid; ensure all materials and equipment are clean and dry; S101. Cut the polyester film to the required size, generally 50 micrometers thick, to ensure a smooth surface and uniform thickness. S102. Add 0.1 μm and 0.2 μm thick siloxane additional layers to the upper side of the substrate layer and the lower side of the prism layer, respectively, to improve surface smoothness and adhesion; S103. Using microencapsulation technology, microcapsules are made between the substrate layer and the upper surface additional layer and a self-healing fluid is injected. S104. A 1.5-micron-thick silicone adhesive layer is added between the microcapsule layer and the upper surface additional layer, allowing it to cure naturally and enhancing its strength and stability. S105. After completing the microcapsule layer, apply self-healing liquid to the upper surface of the self-healing membrane to allow it to fully penetrate and fill the surface damage, and achieve the self-healing function. S106. Clean the self-healing membrane, remove impurities and dirt, and dry and encapsulate it in a dust-free environment; S107. Use high-precision testing tools to check the repair effect, and conduct visual inspection and instrument testing on its shape, size, position, and color; ensure that the product can be used normally and effectively achieve its self-repair function; The specific steps for fabricating the microcapsule layer are as follows: A polymer and solvent are mixed in a 1:3 mass ratio to form a mixture. A crosslinking agent is added to form a gel-like substance. The gel-like substance is dispersed into small particles to obtain polymer particles with specific properties and morphology. The necessary materials and equipment are prepared. The polymer particles are dissolved in a suitable solvent. A dispersant is then added and stirred until homogeneous. The resulting polymer solution is injected into an electrosprayer. The operating parameters of the electrosprayer are adjusted to obtain microcapsules of appropriate size and shape. The size and morphology of the microcapsules are observed to ensure they meet the requirements. Temperature-controlled bonding is ensured to guarantee the adhesion between the microcapsules, the substrate layer, and the additional layer. The position is controlled and the liquid is injected into the microcapsule layer, ensuring full penetration and uniform distribution of the liquid. The filling steps of the self-healing liquid are as follows: prepare capsule particles, mix the prepared capsule particles with the self-healing liquid, add an appropriate amount of surfactant and a small amount of molten medical polycaprolactam (PA6) during the mixing process, heat the resulting mixture to a temperature above the melting point, slowly cool the molten mixture to form solid particles, and use the solid particles of the prepared self-healing liquid to fill the scratches as needed.

2. The method for automatically repairing prism sheets with surface scratches as described in claim 1, characterized in that, The polymer used is a polyetherketone polymer, the solvent used is toluene, and the crosslinking agent used is an organic peroxide crosslinking agent, with an addition amount of 0.1% to 5%.

3. The method for automatically repairing prism sheets with surface scratches as described in claim 1, characterized in that, The method of bonding the microcapsules to the membrane is as follows: prepare the required crosslinking agent or biomimetic material, coat the crosslinking agent or biomimetic material on the surface of the substrate membrane, and evenly lay the microcapsules on it. Adjust the parameters of the crosslinking agent or biomimetic material to control the bonding method and strength between the microcapsules and the substrate membrane to achieve better adhesion and stability.

4. The method for automatically repairing prism sheets with surface scratches as described in claim 3, characterized in that, The capsule particles are prepared using an electrospray method or a microfluidic method.

5. The method for automatically repairing prism sheets with surface scratches as described in claim 3, characterized in that, During the heating process, the mixture needs to be kept at a certain temperature for a period of time to ensure that the self-healing solution inside the capsule particles is fully mixed with PA6.

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