Preparation method of polymer material anti-blue light diffusion product

Abstract

The invention discloses a preparation method of a polymer material anti-blue light diffusion product, which is characterized in that a specific anti-blue light material is added in the preparation process of a polymer material, so that the transmittance of the polymer material to blue light is reduced, and the intensity of the blue light is reduced; the preparation method comprises the following steps: firstly, preparing an inorganic material base particle anti-blue light agent by adopting an inorganic material base particle homogeneous coating process, mixing inorganic material base particles with a dispersion medium, a dispersing agent and a colorless blue light absorbent, and then adding into an ultrahigh-pressure high-speed impact homogenizer to obtain an inorganic material base particle dispersion liquid; adding an anti-settling agent into the inorganic material basic particle dispersion liquid to obtain an inorganic material basic particle anti-settling dispersion liquid; and then adding a coating agent to obtain the blue light inhibitor of inorganic material basic particles coated by using the coating agent as a carrier, and then adding the polymer raw material, the inorganic material-coated basic particle anti-blue light agent and the light diffusion agent into mixing and stirring equipment according to a certain proportion, and uniformly mixing.

Description

Technical Field

[0001] The invention relates to the technical field of optoelectronic materials, and in particular to a method for preparing a polymer material anti-blue light diffusion product. Background Art

[0002] With the widespread use of electronic products, people's demand for polymer anti-blue light materials is growing. Since blue light exists in large quantities in LED lights, LCD screens, computer monitors, mobile phones, and digital products, the screens or lights of these electronic products will emit a large amount of irregular short-wave blue light. Long-term exposure to excessive blue light may cause visual fatigue, dry eyes, transient dry eye syndrome, and even macular degeneration. By applying anti-blue light technology, the amount of blue light radiation can be reduced, reducing the potential risks to visual health. The damage of blue light radiation to the eyes has become an important public concern.

[0003] Blue light refers to high-energy visible light with a wavelength range of approximately 400-500nm. Theoretically, particles with a particle size much smaller than the wavelength of blue light, that is, particles with a particle size range of 50-500nm, usually show strong scattering characteristics, which can effectively scatter blue light and play a role in blocking blue light. Adding particulate materials with a particle size range of 50-500nm to polymer optical materials will form effective anti-blue light products. However, traditional anti-blue light materials often have problems such as high blue light transmittance and poor light transmittance because the particle size of the inorganic material base particles cannot reach the required anti-blue light particle size and the inorganic material base particles agglomerate in the polymer and cannot be dispersed. These problems cannot meet users' requirements for high-quality anti-blue light materials.

[0004] To this end, we propose a method for preparing a polymer material anti-blue light diffusion product to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a method for preparing a polymer material anti-blue light light diffusion product. The method adds specific anti-blue light materials during the preparation of the polymer material, so that the blue light is scattered when the illumination light passes through the transparent polymer material, thereby reducing its transmittance to blue light and thus reducing the intensity of blue light, thereby improving the transmittance of other visible light and achieving uniform scattering of light through light diffusion technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for preparing a polymer material anti-blue light diffusion product, comprising at least one of the following steps:

[0007] 1. Use the inorganic material basic particle homogeneous coating process to prepare the coated inorganic material basic particle anti-blue light agent:

[0008] Step 1, mixing inorganic material basic particles with a dispersion medium, a dispersant, and a colorless blue light absorber, immersing for 1-4 hours, and then adding an ultra-high pressure high-speed impact homogenizer for a processing time of 2-6 hours to obtain an inorganic material basic particle dispersion liquid, wherein the particle size ranges from 50 to 500 nm;

[0009] Step 2, adding an anti-settling agent to the inorganic material basic particle dispersion, stirring in a high-speed stirrer for 0.5-2 hours to obtain an inorganic material basic particle anti-settling dispersion;

[0010] Step 3, add a coating agent, mix it with the inorganic material base particle anti-settling dispersion, the mixing ratio is 1:2-5, and then heat to 60-100°C and stir to evaporate, so that the solid content of the inorganic material base particle anti-settling dispersion and the coating agent are concentrated to 1:0.5-3; obtain an anti-blue light agent of the inorganic material base particles coated with the coating agent as a carrier, and the coating process controls the particle size and particle dispersion of the anti-blue light material particles in the coating agent;

[0011] 2. Using an anti-blue light agent coated with inorganic material base particles to prepare a polymer material anti-blue light diffusion product includes at least one of the following steps:

[0012] Step 1, selecting polymer raw materials, coated inorganic material base particles, blue light protection agents, light diffusers and other auxiliary additives;

[0013] Step 2: Add the polymer raw material, the blue light protection agent for the coated inorganic material base particles and the light diffusing agent into a mixing and stirring device in a certain proportion and mix them evenly to form a homogeneous mixture;

[0014] Step 3, extruding the mixture through an extensional rheological extruder and pelletizing to prepare a masterbatch;

[0015] Step 4, mixing the masterbatch with the polymer base material in proportion, and molding the product through a molding extruder or an injection molding machine to obtain an anti-blue light diffusion product;

[0016] Step 5: Perform necessary post-processing on the prepared product, such as vacuum forming, blow molding, forming-blow molding, cutting, grinding, polishing, etc., to obtain a molded product with a smooth and neat surface.

[0017] In a further embodiment, in the process of homogeneously coating inorganic material base particles:

[0018] The mass parts of the inorganic material base particle dispersion are 20-40 parts of inorganic material base particles, 80-60 parts of dispersion medium, 3-15 parts of dispersant, and 0.2-3 parts of colorless organic blue light absorber;

[0019] The mass proportion of the anti-settling agent in the inorganic material base particle anti-settling dispersion is 0.1-1.5 parts;

[0020] Anti-settling agent: silica suspension anti-settling agent, organic bentonite, modified hydrogenated castor oil, N-methyl pyrrolidone, titanate coupling agent.

[0021] In a further embodiment, the mass parts of the polymer material used to prepare the anti-blue light diffusion product are 80-100 parts of polymer raw material, 0.01-2 parts of anti-blue light agent, 0.1-5 parts of light diffuser and other auxiliary additives in the coated inorganic material base particles.

[0022] In a further embodiment, the other auxiliary additives are 0.2-2.5 parts of dispersant, 0.5-4 parts of oxidant, and 0.5-5 parts of lubricant.

[0023] In a further embodiment, the dispersant is polyethylene wax; the oxidant is oxidant 1010; and the lubricant is stearic acid.

[0024] In a further embodiment, the polymer raw material is at least one of PC, PMMA, PS, PET, PP, and PSF.

[0025] In a further embodiment, the inorganic material base particles are at least one of zinc oxide, zirconium dioxide, barium titanate, titanium dioxide, and silicon dioxide.

[0026] In a further embodiment, the colorless organic blue light absorber is at least one of diphenyl phenone, phenyl benzimidazolone, naphthone, and phenyl dianthraquinone;

[0027] The dispersant is at least one of sodium hexametaphosphate, sodium oleate, polyoxyethylene alkylphenol ether, sodium pyrophosphate, polyvinyl pyrrolidone, sodium polyacrylate, sodium polymetaphosphate, and petroleum sulfonate;

[0028] The dispersion medium is one of water, anhydrous ethanol, ethyl acetate, butanone, and isopropanol;

[0029] The coating agent is one of DOP, ATBC, PVP and liquid toughening agent;

[0030] The light diffuser is at least one of PMMA microspheres, polystyrene microspheres, polyethylene microspheres, silicone microspheres, and glass microspheres.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention adopts the addition of specific blue light blocking agents and light diffusing agents, and through the blending modification with polymer materials, reduces the light transmittance to blue light, improves the light transmittance to other visible light, and realizes the uniform dispersion of light through light diffusion technology. Compared with traditional blue light blocking coatings or film materials, the polymer blue light blocking light diffusing product prepared by the present invention has better blue light transmittance, improves the light transmittance and light diffusion performance of other visible light.

[0033] The technical advantages of preparing anti-blue light diffusion products include:

[0034] Long-lasting effect of anti-blue light agent: Due to the use of inorganic material base particles, the anti-blue light effect of the anti-blue light agent will not decay over time and has long-lasting effect;

[0035] Anti-blue light diffusion products use special anti-blue light inorganic material particles with a particle size of less than 500nm. They can efficiently filter out harmful components in blue light wavelengths, effectively reduce the intensity of blue light and irritation to the eyes, and provide more comfortable and safe lighting effects.

[0036] Uniform light dispersion: Anti-blue light diffusion products use optical design and material processing with the addition of light diffusers. The size of the inorganic material particles can disperse light more evenly, providing a soft and uniform lighting effect and reducing eye fatigue and discomfort.

[0037] High light transmittance: Anti-blue light diffusion products have high light transmittance. Even after blue light filtering and light diffusion treatment, due to the small particle size of anti-blue light inorganic materials, they can still maintain efficient light penetration for other visible light with a wavelength greater than 500nm (green light, red light), providing good lighting brightness while maintaining effective blue light protection effect.

[0038] Anti-blue light diffusion products have good color reproduction and will not cause distortion or deviation of the color of objects. This can ensure the accurate representation of the color of objects under lighting conditions and meet users' needs for real and natural colors.

[0039] Blue light refers to high-energy visible light with a wavelength range of approximately 400-500nm. Theoretically, for particles with a particle size much smaller than the wavelength of blue light, that is, particles with a particle size range of 50-500nm, they usually show strong blue light scattering characteristics, which can effectively scatter blue light and play a role in blue light protection. Adding granular materials with a particle size range of 50-500nm to polymer optical materials will form effective blue light protection products, prepare granular materials with a particle size range of 50-500nm, and ensure that the prepared granular materials are added to the polymer in the form of the original particle size while maintaining uniform dispersion in the form of the original particle size. The proprietary technology can simultaneously meet the above two technical effects, realize the effective function of blue light protection on polymer products, and still maintain efficient light penetration ability for other visible light with a wavelength greater than 500nm (green light, red light), providing good lighting brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a graph showing the particle size measurement of the inorganic material base particle dispersion in Example 1;

[0041] Figure 2 The particle size and particle size distribution diagram of the particles in the blue light protection material particle coating agent in Example 1;

[0042] Figure 3 This is a graph showing the uniformity of dispersion of inorganic material base particles in the polymer and the particle size in Example 1;

[0043] Figure 4 This is a graph showing the particle size measurement of the inorganic material base particle dispersion in Example 2;

[0044] Figure 5 The particle size and dispersion distribution diagram of the particles in the blue light protection material particle coating agent in Example 2;

[0045] Figure 6 This is a graph showing the uniformity of dispersion of inorganic material base particles in the polymer and the particle size in Example 2;

[0046] Figure 7 This is a graph showing the particle size measurement of the inorganic material base particle dispersion in Example 3;

[0047] Figure 8 This is a graph showing the dispersion uniformity and particle size of inorganic material base particles in the polymer in Example 3;

[0048] Fig. 9 This is the particle size diagram measured in Example 4;

[0049] Fig.10 This is a graph showing the dispersion uniformity of the inorganic material base particles in the polymer and the particle size in Example 4. DETAILED DESCRIPTION

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] See also Figure 1-4 , a method for preparing a polymer material anti-blue light diffusion product, comprising at least one of the following steps:

[0054] 1. Homogeneous coating process of inorganic material basic particles

[0055] Step 1: Mix the inorganic material basic particles with the dispersion medium, dispersant, and colorless blue light absorber, immerse for 1-4 hours, and then add the ultra-high pressure high-speed impact homogenizer for 2-6 hours to obtain the inorganic material basic particle dispersion, the particle size of which is in the range of 50-500nm. The ultra-high pressure high-speed impact homogenizer is manufactured by Guangzhou Juneng Biotechnology Co., Ltd.

[0056] Step 2, adding an anti-settling agent to the inorganic material basic particle dispersion, stirring in a high-speed stirrer for 0.5-2 hours to obtain an inorganic material basic particle anti-settling dispersion;

[0057] Step 3, add a coating agent, mix it with the anti-settling dispersion of inorganic material base particles, the mixing ratio is 1:2-5, and then heat to 60-100°C and stir to evaporate, so that the solid content of the anti-settling dispersion of inorganic material base particles and the coating agent are concentrated to 1:0.5-3; obtain an anti-blue light agent of inorganic material base particles coated with the coating agent as a carrier, and the coating process controls the dispersion degree of the anti-blue light material particles in the coating agent.

[0058] The mass parts of the inorganic material base particle dispersion are 20-40 parts of inorganic material base particles, 80-60 parts of dispersion medium, 3-15 parts of dispersant, and 0.2-3 parts of colorless organic blue light absorber;

[0059] The mass proportion of the anti-settling agent in the inorganic material base particle anti-settling dispersion is 0.1-1.5 parts;

[0060] Anti-settling agent: silica suspension anti-settling agent, organic bentonite, modified hydrogenated castor oil, N-methyl pyrrolidone, titanate coupling agent;

[0061] 2. The method for preparing an anti-blue light diffusion product from a polymer material comprises at least one of the following steps:

[0062] Step 1: Select polymer raw materials, coated inorganic material base particles, anti-blue light agents, light diffusers and other auxiliary additives.

[0063] Step 2: Add the polymer raw material, the blue light protection agent and the light diffusing agent coated with the inorganic material base particles into a mixing and stirring device in a certain proportion and mix them evenly to form a homogeneous mixture.

[0064] Step 3, extruding and pelletizing the mixture through an extensional rheological extruder to prepare a masterbatch, wherein the extensional rheological extruder is manufactured by South China University of Technology;

[0065] Step 4: Mix the masterbatch with the polymer base material in proportion, and form the product through a molding extruder or an injection molding machine to obtain an anti-blue light diffusion product;

[0066] Step 5: Perform necessary post-processing on the prepared product, such as vacuum forming, blow molding, forming-blow molding, cutting, grinding, polishing, etc., to obtain a molded product with a smooth and neat surface.

[0067] The mass parts of the polymer material for preparing the anti-blue light diffusion product are 80-100 parts of the polymer raw material, 0.01-2 parts of the anti-blue light agent for the coated inorganic material base particles, 0.1-5 parts of the light diffuser and other auxiliary additives (0.2-2.5 parts of the dispersant, 0.5-4 parts of the oxidant, 0.5-5 parts of the lubricant) (dispersant: polyethylene wax; oxidant: oxidant 1010; lubricant: stearic acid)

[0068] The polymer raw material is at least one of PC, PMMA, PS, PET, PP and PSF;

[0069] The inorganic material base particles are at least one of zinc oxide, zirconium dioxide, barium titanate, titanium dioxide and silicon dioxide;

[0070] The colorless organic blue light absorber is at least one of diphenyl benzophenone, phenyl benzimidazolone, naphthone, and phenyl dianthraquinone;

[0071] The dispersant is at least one of sodium hexametaphosphate, sodium oleate, polyoxyethylene alkylphenol ether, sodium pyrophosphate, polyvinyl pyrrolidone, sodium polyacrylate, sodium polymetaphosphate, and petroleum sulfonate;

[0072] The dispersion medium is water, anhydrous ethanol, ethyl acetate, butanone, and isopropanol;

[0073] The coating agent is DOP, ATBC, PVP, or a liquid toughening agent;

[0074] The light diffuser is at least one of PMMA microspheres, polystyrene microspheres, polyethylene microspheres, silicone microspheres and glass microspheres.

[0075] Alternatively, the inorganic material base particle dispersion can be added directly to a mixing and stirring device with the polymer raw material and the light diffusing agent in a certain proportion without being coated with a coating agent, and mixed evenly to form a homogeneous mixture, which is then molded by an extruder or an injection molding machine to obtain the desired shape of the anti-blue light diffusion product, and then subjected to subsequent processing.

[0076] Alternatively, the inorganic material base particle dispersion can be added directly to an extruder or injection molding machine in a quantitative form through a quantitative device for molding without being coated with a coating agent, and then molded into the desired shape of the anti-blue light diffusion product, and then subjected to subsequent processing.

[0077] Embodiment 1, as Figure 1-3 Shown

[0078] Homogeneous coating process of inorganic material basic particles:

[0079] Step 1: Mix 20 parts of inorganic material basic particles of zinc oxide with 80 parts of dispersion medium water, 3 parts of dispersant sodium hexametaphosphate, and 0.2 parts of colorless blue light absorber diphenyl phenone, soak for 1 hour, and then add it into an ultra-high pressure high-speed impact homogenizer for 2 hours to obtain an inorganic material basic particle dispersion. The particle size of the inorganic material basic particle dispersion is measured as follows: Figure 1 As shown, the particle size D50 of the inorganic material base particles is 280 nm;

[0080] Step 2, adding 0.3 parts of anti-settling agent silica suspension anti-settling agent to the inorganic material base particle dispersion, stirring in a high-speed stirrer for 0.5 hours to obtain the inorganic material base particle anti-settling dispersion;

[0081] Step 3, add coating agent DOP, mix with inorganic material base particle anti-settling dispersion, the mixing ratio is 1:2, then heat to 60℃ and stir to evaporate, so that the solid content of inorganic material base particle anti-settling dispersion and coating agent are concentrated to 1:1; obtain the anti-blue light agent of inorganic material base particles coated with coating agent as carrier, and control the dispersion degree of anti-blue light material particles in coating agent during coating process. The particle size of anti-blue light material particle coating agent is as follows: Figure 2 As shown, the particle size D50 of the inorganic material base particles in the coating agent is 320 nm.

[0082] The method for preparing an anti-blue light diffusion product from a polymer material comprises at least one of the following steps:

[0083] Step 1. Select 80 parts of polymer raw material PS, 1.5 parts of anti-blue light agent for coated inorganic material base particles, 1.5 parts of light diffuser polystyrene microspheres and other auxiliary additives: 0.6 parts of polyethylene wax, 1.5 parts of oxidant 1010, and 1.5 parts of stearic acid.

[0084] Step 2: Add the polymer raw material, the blue light protection agent, the light diffuser and the auxiliary additives into a mixing and stirring device in a certain proportion and mix them evenly to form a homogeneous mixture.

[0085] Step 3, extruding the mixture through an extensional rheological extruder and pelletizing to prepare a masterbatch;

[0086] Step 4: Mix the masterbatch with the polymer base material in a ratio of 1:2, and form the product through an extruder to obtain an anti-blue light diffusion extruded sheet product; the dispersion uniformity of the inorganic material base particles in the polymer and the particle size are as follows: Figure 3 As shown, most of the particle sizes fall within the range of less than 500 nm and the inorganic material base particles are evenly distributed;

[0087] Step 5: Cut and polish the prepared product to obtain a PS anti-blue light diffusion board product with a smooth and neat surface.

[0088] Embodiment 2, as Figure 4-6 Shown

[0089] Homogeneous coating process of inorganic material basic particles:

[0090] Step 1: Mix 30 parts of inorganic material basic particles of titanium dioxide, 70 parts of anhydrous ethanol, 8 parts of dispersant sodium polyacrylate, and 1 part of phenylbenzimidazolone, soak for 2 hours, and then add an ultra-high pressure high-speed impact homogenizer for 4 hours to obtain an inorganic material basic particle dispersion. The particle size of the inorganic material basic particle dispersion is measured as follows: Figure 4 As shown, the particle size D50 of the inorganic material base particles is 230 nm;

[0091] Step 2, adding 1 part of anti-settling agent N-methylpyrrolidone to the inorganic material basic particle dispersion, stirring in a high-speed stirrer for 1.5 hours to obtain the inorganic material basic particle anti-settling dispersion;

[0092] Step 3, add the coating agent liquid toughening agent and mix with the inorganic material base particle anti-settling dispersion liquid, the mixing ratio is 1:3, then heat to 80℃ and stir to evaporate, so that the solid content of the inorganic material base particle anti-settling dispersion liquid and the coating agent are concentrated to 1:1.5; the anti-blue light agent of the inorganic material base particle coated with the coating agent as the carrier is obtained, and the coating process controls the dispersion of the anti-blue light material extruded particles in the coating agent. The particle size and dispersion distribution in the anti-blue light material particle coating agent are as follows Figure 5 As shown, the particle size D50 of the inorganic material base particles in the coating agent is 310 nm, and the inorganic material base particles are evenly distributed.

[0093] The method for preparing an anti-blue light diffusion product from a polymer material comprises at least one of the following steps:

[0094] Step 1: Select 90 parts of polymer raw material PC, 2 parts of anti-blue light agent for coated inorganic material base particles, 5.0 parts of light diffusing agent silicone microspheres and 2.5 parts of polyethylene wax; 4 parts of oxidant 1010; 5.0 parts of stearic acid.

[0095] Step 2: Add the polymer raw material, the blue light protection agent for the coated inorganic material base particles, the auxiliary additives and the light diffusing agent into a mixing and stirring device in proportion and mix them evenly to form a homogeneous mixture.

[0096] Step 3, extruding the mixture through an extensional rheological extruder and pelletizing to prepare a masterbatch;

[0097] Step 4: Mix the masterbatch with the polymer base material in a ratio of 1:4, and use an injection molding machine to mold the product to obtain an anti-blue light diffusion injection molded product; the dispersion uniformity of the inorganic material base particles in the polymer and the particle size are as follows: Figure 6 As shown, the inorganic material base particles are evenly dispersed in the polymer and the particle size is below 500nm.

[0098] Embodiment 3, as Figure 7-8 Shown

[0099] Method for preparing anti-blue light diffusion products using polymer materials:

[0100] Step 1: Mix 40 parts of inorganic material basic particles of silica, 60 parts of ethyl acetate, 15 parts of sodium polymetaphosphate and 3 parts of naphthalene ketone, soak for 3 hours, and then add an ultra-high pressure high-speed impact homogenizer for 4 hours to obtain an inorganic material basic particle dispersion, whose particle size range D50 is 213nm, such as Figure 7 As shown;

[0101] Step 2: Select 100 parts of polymer raw material PP, 0.3 parts of inorganic material basic particle dispersion obtained in step 1, 1 part of light diffuser glass microspheres, and 2 parts of polyethylene wax; 2 parts of oxidant 1010; 1.5 parts of stearic acid, and add them directly to the extruder in a quantitative form through a quantitative device according to the proportion to form the product, obtain the desired anti-blue light diffusion product shape, and perform subsequent processing. The dispersion uniformity of inorganic material basic particles in the polymer and the particle size are as follows: Figure 8 As shown, the inorganic material base particles are evenly dispersed in the polymer and the particle size is below 500nm.

[0102] Step 3: subjecting the obtained product to vacuum forming-blow molding processing to obtain a chandelier shell cover molded product with a smooth and neat surface.

[0103] Embodiment 4, as Figure 9-10 Shown

[0104] Inorganic material basic particle homogenization process:

[0105] Step 1: Mix 20 parts of inorganic material basic particles of titanium dioxide, 80 parts of anhydrous ethanol, 10 parts of polyoxyethylene alkylphenol ether, and 1 part of phenyl dianthraquinone, and immerse for 3 hours, and process for 6 hours by ultra-high pressure high-speed impact homogenizer to obtain an inorganic material basic particle dispersion, wherein the particle size D50 of the inorganic material basic particles in the inorganic material basic particle dispersion is 260 nm. Fig. 9 shown.

[0106] Method for preparing anti-blue light diffusion products using polymer materials:

[0107] Step 1: Select 100 parts of polymer raw material PMMA, 0.2 parts of inorganic material base particle dispersion, 1 part of polyethylene wax, 1.5 parts of oxidant 1010, and 1.5 parts of stearic acid.

[0108] Step 2: Add the polymer raw material and auxiliary additives into a mixing and stirring device according to a certain proportion and mix them evenly to form a homogeneous mixture.

[0109] Step 3: Add the inorganic material basic particle dispersion in liquid form directly to the liquid delivery port of the extruder and the mixture in step 2 in a certain proportion to a twin-screw-single-screw combination second-stage extruder for extrusion molding, and obtain a blue light diffusion-proof sheet product by calendering and embossing;

[0110] Step 5: Perform necessary post-processing on the obtained product. After grinding and polishing, the obtained transparent product will produce a uniform scattering effect on blue light under lighting, so that the light diffusion plate simulates the blue light effect of the sky. The dispersion uniformity of inorganic material basic particles in the polymer and the particle size are as follows: Fig.10 As shown, the inorganic material base particles are evenly dispersed in the polymer and the particle size is below 500nm.

[0111] [Comparative Example 1]:

[0112] PS material for light diffusion products:

[0113] Step 1: 80 parts of PS, 1.5 parts of polystyrene microspheres, 0.6 parts of polyethylene wax, 1.5 parts of oxidant 1010, and 1.5 parts of stearic acid.

[0114] Step 2: Add the polymer raw material, light diffuser and auxiliary additives into a mixing and stirring device according to a certain proportion and mix them evenly to form a homogeneous mixture.

[0115] Step 3, extruding the mixture through an extruder and pelletizing to prepare a masterbatch;

[0116] Step 4: mixing the masterbatch with the polymer base material in a ratio of 1:2, and forming the product through an extruder to obtain a light diffusion extruded sheet product;

[0117] [Comparative Example 2]

[0118] Light diffusion products made of PC materials:

[0119] Step 1: Select 90 parts of polymer raw material PC, 5.0 parts of silicone microspheres and 2.5 parts of polyethylene wax; 4 parts of oxidant 1010; 5.0 parts of stearic acid;

[0120] Step 2: Add the polymer raw material, auxiliary additives and light diffusing agent into a mixing and stirring device according to a certain proportion and mix them evenly to form a homogeneous mixture.

[0121] Step 3, extruding the mixture through an extensional rheological extruder and pelletizing to prepare a masterbatch;

[0122] Step 4: Mix the masterbatch with the polymer base material in a ratio of 1:4, and perform product molding through a molding injection molding machine to obtain an anti-blue light diffusion injection molded product;

[0123] [Comparative Example 3]

[0124] Step 2: Select 100 parts of polymer raw material PP, 1 part of glass microspheres and 2 parts of polyethylene wax; oxidant: 2 parts of oxidant 1010; lubricant: 1.5 parts of stearic acid, and add them directly into the extruder in a quantitative form through a quantitative device according to the proportion to form the product, obtain the desired shape of the light diffusion product, and carry out subsequent processing.

[0125] The comparative data of the blue light ratio of the embodiment and the comparative example spectrum are shown in Table 1:

[0126] Testing equipment: Spectral illuminance meter SFIM-400

[0127] Table 1 Comparison of blue light ratio between the embodiment and the comparative example

[0128] Sample Illuminance / lx Color temperature / k Color rendering / Ra Red light / % Green light / % Blue light / % Blank sample 459.68 6581 98.8 13.3 81.3 5.4 Example 1 413.22 5820 96.5 15.4 80.8 3.8 Example 2 402.87 5781 97.6 15.2 80.9 3.9 Example 3 395.46 5763 96.3 15.7 80.7 3.6 Example 4 421.68 6210 95.7 15.2 80.3 4.5 Comparative Example 1 401.65 6102 97.2 14.4 80.3 5.3 Comparative Example 2 385.28 5923 96.8 14.7 80.1 5.2 Comparative Example 3 392.57 5876 97.1 14.1 80.5 5.4

[0129] From the measurement data in Table 1, it can be seen that by adding specific anti-blue light materials during the preparation of polymer materials, when the illumination light passes through the polymer material anti-blue light diffusion product, the inorganic material base particles contained in the polymer material scatter the blue light, effectively reducing the transmittance of blue light, the proportion of blue light in the spectrum is less than 4.5%, and the proportion of red and green light in the visible light in the spectrum is increased, keeping the color rendering basically unchanged.

[0130] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0131] It should be noted that: Figure 1 Measuring instrument: HORIBA Laser Scattering Particle Size Distribution Analyzer LA960WET; Figure 2 Measuring instrument: HORIBA Laser Scattering ParticleSize Distribution Analyzer LA960WET; Figure 3 SEM scans: Field emission scanning electron microscope, QuantaFEG250; Figure 4Measuring instrument: HORIBA Laser Scattering Particle Size Distribution Analyzer LA960WET; Figure 5 Measuring instrument: HORIBA Laser Scattering Particle Size Distribution Analyzer LA960WET; Figure 6 SEM scans: field emission scanning electron microscope, Quanta FEG250; Figure 7 Measuring instruments: HORIBA Laser Scattering Particle Size Distribution AnalyzerLA960WET; Figure 8 SEM scans: Field emission scanning electron microscope, Quanta FEG250; Fig. 9 Measuring instrument: HORIBA Laser Scattering Particle Size Distribution Analyzer LA960WET; Fig.10 SEM scan: Field emission scanning electron microscope, Quanta FEG250.

[0132] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A polymer material anti-blue light diffusion product, characterized in that: The polymer material anti-blue light diffusion product contains inorganic material basic particles, the inorganic material basic particles have a particle size of 50 to 500 nm, and the inorganic material basic particles are evenly distributed; The polymer material anti-blue light diffusion product is characterized in that when the illumination light passes through the transparent polymer material, the inorganic material base particles scatter the blue light, effectively reducing the transmittance of the blue light, the proportion of blue light in the spectrum is less than 4.5%, and the proportion of red and green light in the visible light in the spectrum is increased, keeping the color rendering basically unchanged.

2. A method for preparing a polymer material anti-blue light diffusion product, comprising at least one of the following steps:

1. Use the inorganic material basic particle homogeneous coating process to prepare the coated inorganic material basic particle anti-blue light agent: Step 1, mixing inorganic material basic particles with a dispersion medium, a dispersant, and a colorless blue light absorber, immersing for 1-4 hours, and then adding an ultra-high pressure high-speed impact homogenizer for a processing time of 2-6 hours to obtain an inorganic material basic particle dispersion liquid, wherein the particle size ranges from 50 to 500 nm; Step 2, adding an anti-settling agent to the inorganic material basic particle dispersion, stirring in a high-speed stirrer for 0.5-2 hours to obtain an inorganic material basic particle anti-settling dispersion; Step 3, add a coating agent, mix it with the inorganic material base particle anti-settling dispersion, the mixing ratio is 1:2-5, and then heat to 60-100°C and stir to evaporate, so that the solid content of the inorganic material base particle anti-settling dispersion and the coating agent are concentrated to 1:0.5-3; obtain an anti-blue light agent of the inorganic material base particles coated with the coating agent as a carrier, and the coating process controls the particle size and particle dispersion of the anti-blue light material particles in the coating agent; 2. Using an anti-blue light agent coated with inorganic material base particles to prepare a polymer material anti-blue light diffusion product includes at least one of the following steps: Step 1, selecting polymer raw materials, coated inorganic material base particles, blue light protection agents, light diffusers and other auxiliary additives; Step 2: Add the polymer raw material, the blue light protection agent for the coated inorganic material base particles and the light diffusing agent into a mixing and stirring device in a certain proportion and mix them evenly to form a homogeneous mixture; Step 3, extruding the mixture through an extensional rheological extruder and pelletizing to prepare a masterbatch; Step 4, mixing the masterbatch with the polymer base material in proportion, and molding the product through a molding extruder or an injection molding machine to obtain an anti-blue light diffusion product; Step 5: Perform necessary post-processing on the prepared product, such as vacuum forming, blow molding, forming-blow molding, cutting, grinding, polishing, etc., to obtain a molded product with a smooth and neat surface.

3. The method for preparing a polymer material anti-blue light diffusion product according to claim 1, characterized in that: In the process of homogeneous coating of inorganic material base particles: The mass parts of the inorganic material base particle dispersion are 20-40 parts of inorganic material base particles, 80-60 parts of dispersion medium, 3-15 parts of dispersant, and 0.2-3 parts of colorless organic blue light absorber; The mass proportion of the anti-settling agent in the inorganic material base particle anti-settling dispersion is 0.1-1.5 parts; Anti-settling agent: silica suspension anti-settling agent, organic bentonite, modified hydrogenated castor oil, N-methyl pyrrolidone, titanate coupling agent.

4. The method for preparing a polymer material anti-blue light diffusion product according to claim 1, characterized in that: The mass parts of the polymer material used to prepare the anti-blue light diffusion product are 80-100 parts of polymer raw materials, 0.01-2 parts of anti-blue light agent, 0.1-5 parts of light diffuser and other auxiliary additives for coating inorganic material base particles.

5. The method for preparing a polymer material anti-blue light diffusion product according to claim 3, characterized in that: The other auxiliary additives are 0.2-2.5 parts of dispersant, 0.5-4 parts of oxidant, and 0.5-5 parts of lubricant.

6. The method for preparing a polymer material anti-blue light diffusion product according to claim 4, characterized in that: The dispersant: polyethylene wax; the oxidant: oxidant 1010; Lubricant: Stearic acid.

7. The method for preparing a polymer material anti-blue light diffusion product according to claim 1, characterized in that: The polymer raw material is at least one of PC, PMMA, PS, PET, PP and PSF.

8. The method for preparing a polymer material anti-blue light diffusion product according to claim 1, characterized in that: The inorganic material base particles are at least one of zinc oxide, zirconium dioxide, barium titanate, titanium dioxide and silicon dioxide.

9. The method for preparing a polymer material anti-blue light diffusion product according to claim 1, characterized in that: The colorless organic blue light absorber is at least one of diphenyl benzophenone, phenyl benzimidazolone, naphthone, and phenyl dianthraquinone; The dispersant is at least one of sodium hexametaphosphate, sodium oleate, polyoxyethylene alkylphenol ether, sodium pyrophosphate, polyvinyl pyrrolidone, sodium polyacrylate, sodium polymetaphosphate, and petroleum sulfonate; The dispersion medium is one of water, anhydrous ethanol, ethyl acetate, butanone, and isopropanol; The coating agent is one of DOP, ATBC, PVP and liquid toughening agent; The light diffuser is at least one of PMMA microspheres, polystyrene microspheres, polyethylene microspheres, silicone microspheres, and glass microspheres.

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