Anti-blue light material and preparation method thereof

Abstract

The invention relates to the technical field of blue light prevention, and provides a blue light prevention material and a preparation method thereof.The blue light prevention material is prepared from, by weight, 150-350 parts of carrier resin, 2-4 parts of modified boron nitride, 1.5-3.5 parts of modified cerium dioxide and 0.5-2 parts of antioxidant. The anti-blue-light material provided by the invention has a good blocking effect on 400-460nm high-energy blue light, can be widely applied to the fields of anti-blue-light lampshades, anti-blue-light lenses and LED lamp protective films, and has a relatively good commercial application value.

Description

Technical Field

[0001] The present invention relates to the technical field of blue light protection, and in particular to a blue light protection material and a preparation method thereof. Background Art

[0002] Blue light is a high-frequency, high-energy visible light that is closest to ultraviolet light waves, with a wavelength between 400-500nm. Among them, high-energy blue light with a wavelength between 400-460nm is harmful blue light. A large number of reports show that long-term exposure to high-energy blue light can cause severe vision loss, macular degeneration, and damage to the retina in severe cases. Mild cases may also experience red eyes, dry eyes, sore eyes, blurred vision, visual fatigue, and pain in the head, bones, shoulders, and cervical spine. In addition, high-energy blue light can also cause damage to the skin, such as causing skin aging and excessive pigmentation, and even more lasting than the pigmentation caused by ultraviolet rays.

[0003] Blue light not only comes from sunlight, but also exists in the light emitted by various electronic products, such as smartphone screens, computer screens, LCD TV screens or other LED-related products. However, as living standards gradually improve, people are exposed to these electronic products more and more frequently and for longer periods of time. Therefore, the development of blue light blocking materials such as blue light blocking lampshades and blue light blocking glasses has gradually attracted people's attention. However, the blue light blocking materials on the market still have some limitations. For example, people often add some fillers that block blue light, such as boron nitride, mica and pearlescent powder, but these materials often have poor dispersion, which affects their blue light blocking performance.

[0004] Patent CN 111484685A discloses an anti-blue light material, a preparation method thereof, and an anti-blue light lampshade. The anti-blue light material disclosed in the application includes a base material and an anti-blue light masterbatch, wherein the anti-blue light masterbatch is composed of a blue light absorber, polyethylene terephthalate, nano-silicon dioxide, hexamethylphosphoric triamide, etc., which can make the light diffuse and absorb evenly, and can better block blue light. However, the high surface energy of the nano-silicon dioxide used in the application will cause it to easily agglomerate, which will cause the anti-blue light performance of the material to fail to achieve the ideal effect.

[0005] Therefore, there is an urgent need on the market for an anti-blue light material that has good blocking properties for high-energy blue light of 400-460nm. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention synthesizes a blue light blocking material with carrier resin, modified boron nitride and modified cerium dioxide as main components, which has a good blocking effect on high-energy blue light of 400-460nm.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] On one hand, the present invention provides a blue light protection material, which comprises the following raw materials in parts by weight: 150-350 parts of carrier resin, 2-4 parts of modified boron nitride, 1.5-3.5 parts of modified cerium dioxide, and 0.5-2 parts of antioxidant.

[0009] In some embodiments of the present invention, the carrier resin is any one of PC, PET, and PMMA.

[0010] In some embodiments of the present invention, the method for preparing the modified boron nitride comprises the following steps:

[0011] 1) adding hexagonal boron nitride to a sodium hydroxide aqueous solution, stirring at 115-125° C. for 23-25 ​​hours, centrifuging, washing, adding to deionized water, ultrasonicating, centrifuging, taking the supernatant, vacuum filtering, and drying to obtain hydroxylated boron nitride for use;

[0012] 2) Adding the hydroxylated boron nitride in step 1) into Tris buffer, ultrasonicating, adding polyethyleneimine, stirring, centrifuging, washing, and drying to obtain modified boron nitride.

[0013] In some embodiments of the present invention, in step 2), the mass ratio of hydroxylated boron nitride to polyethyleneimine is 1:(0.2-0.4).

[0014] Preferably, in step 2), the mass ratio of hydroxylated boron nitride to polyethyleneimine is 1:0.3.

[0015] Boron nitride can block the blue light component in visible light, and also has good heat resistance and optical transparency. It is often added to anti-blue light materials as a blue light protection filler. However, the surface of boron nitride lacks functional groups that can be used for chemical bonding and interaction. The remaining hydroxyl and amino groups on its edges are very few and have extremely low chemical activity, making it difficult to form a uniform dispersion in the polymer matrix, resulting in a decrease in its anti-blue light effect.

[0016] The applicant adds hexagonal boron nitride to an alkaline aqueous solution of sodium hydroxide, controls the temperature to 115-125°C for a high-temperature hydrolysis reaction, so that the hydroxyl groups are covalently bonded to the boron atoms in the hexagonal boron nitride to form BO bonds, thereby introducing hydroxyl functional groups on the surface of the boron nitride. At the same time, high temperature and ultrasound combined with assisted hydrolysis can accelerate Brownian motion, thereby making the hydrolysis reaction more thorough, so that more hydroxyl groups appear on the surface of the boron nitride, and thus greatly improving the dispersibility of the boron nitride; further, the applicant introduces polyethyleneimine to modify the hydroxylated boron nitride, and the amino groups in the polyethyleneimine undergo a grafting reaction with the hydroxyl groups in the hydroxylated boron nitride, introducing a flexible chain structure and a large number of amino structures to the surface of the modified boron nitride, increasing the number of active groups on the surface of the boron nitride, improving the dispersibility of the boron nitride, and making the modified boron nitride have a three-dimensional spatial structure, weakening the agglomeration effect of the boron nitride itself, and further improving the dispersibility.

[0017] In some embodiments of the present invention, the method for preparing the modified cerium dioxide comprises the following steps:

[0018] (1) adding glucose to deionized water, stirring, stirring at 3-5 MPa and 170-190° C. for 11-13 h, cooling to room temperature, centrifuging, washing, and drying to obtain product 1 for later use;

[0019] (2) adding cerium nitrate hexahydrate and ammonium acetate into deionized water, adding the product 1 of step (1), ultrasonicating, stirring at 55-65° C. for 11-13 h, centrifuging, washing, and drying to obtain product 2 for later use;

[0020] (3) adding butyl titanate and hydrochloric acid to anhydrous ethanol, adding the product 2 of step (2), ultrasonicating, stirring at 3-5 MPa and 170-190° C. for 7-9 h, cooling to room temperature, centrifuging, washing, drying, and calcining to obtain product 3 for later use;

[0021] (4) adding the product 3 of step (3) to anhydrous ethanol, stirring, adding 3-aminopropyltrimethoxysilane, stirring at 55-65° C. for 3-5 h, centrifuging, washing, and drying to obtain product 4 for later use;

[0022] (5) adding the product 4 of step (4) into deionized water, stirring, adding the graphene oxide aqueous solution, stirring, centrifuging, washing, drying, and then adding into deionized water, stirring at 3-5 MPa and 110-130° C. for 11-13 h, cooling to room temperature, centrifuging, washing, drying, and obtaining the product 5 for use;

[0023] (6) adding the product 5 of step (5) to anhydrous ethanol, stirring, adding the anhydrous ethanol solution of polyethyleneimine, stirring, adding triethylamine, stirring, adding deionized water after the temperature stabilizes, stirring, filtering, washing, and drying to obtain the product 6 for use;

[0024] (7) Add the product 6 of step (6) into deionized water, sonicate, dropwise add aqueous ammonia, stir, add silver ammonia solution in a dark environment, sonicate, add aqueous ascorbic acid solution, stir, filter, wash, and dry to obtain modified cerium dioxide.

[0025] Wherein, in the step (4), the ratio of product 3 to 3-aminopropyltrimethoxysilane is 1 g:(2-3) ml; in the step (6), the mass ratio of product 5 to polyethyleneimine in the polyethyleneimine anhydrous ethanol solution is 1:(24-26).

[0026] Preferably, in step (4), the ratio of product 3 to 3-aminopropyltrimethoxysilane is 1 g:2.5 ml; in step (6), the mass ratio of product 5 to polyethyleneimine in the polyethyleneimine anhydrous ethanol solution is 1:25.

[0027] In some embodiments of the present invention, the mass ratio of the cerium nitrate hexahydrate to butyl titanate is 1:(1.5-2.5).

[0028] Preferably, the mass ratio of the cerium nitrate hexahydrate to butyl titanate is 1:2.

[0029] In some embodiments of the present invention, in step (5), the mass ratio of the product 4 to the graphene oxide in the graphene oxide aqueous solution is 1:(0.004-0.06).

[0030] Preferably, in step (5), the mass ratio of the product 4 to the graphene oxide in the graphene oxide aqueous solution is 1:0.005.

[0031] In some embodiments of the present invention, in step (7), the mass ratio of product 6 to ascorbic acid in the ascorbic acid aqueous solution is 1:(0.1-0.2).

[0032] Preferably, in step (7), the mass ratio of product 6 to ascorbic acid in the ascorbic acid aqueous solution is 1:0.15.

[0033] Both blue light and ultraviolet light can cause damage to human eyes or skin, so ingredients that can block ultraviolet light are often added to blue light protection materials to provide more comprehensive protection for the human body. Adding ultraviolet protection materials can also protect the blue light protection materials from damage by ultraviolet light as a whole, extending the service life of the blue light protection materials. Cerium dioxide, as a rare earth material, has the functions of sun protection and ultraviolet shielding, but its blue light protection performance needs to be improved.

[0034] On the one hand, the applicant used cerium nitrate hexahydrate, ammonium acetate and butyl titanate as raw materials to prepare cerium dioxide @ titanium dioxide microspheres (product 3) with a hollow core-shell structure, modified the surface of the microspheres so that they had amino groups on their surfaces, introduced graphene oxide, and made the carboxyl groups on the surface of the graphene oxide combine with the cerium dioxide @ titanium dioxide microspheres through an amide reaction, and finally carried out a reduction reaction to synthesize cerium dioxide @ titanium dioxide / graphene microspheres (product 5), and introduced titanium dioxide and graphene structures to make the cerium dioxide @ titanium dioxide / graphene microspheres have both anti- The invention discloses a novel nanostructured cerium dioxide product 5, which has the advantages of blue light and UV protection, and cerium dioxide @ titanium dioxide / graphene microspheres have the advantages of large specific surface area, and through the core-shell structure, the incident blue light and ultraviolet light can be better shielded and absorbed; on the other hand, the applicant introduces polyethyleneimine, silver ammonia solution and ascorbic acid to modify the above product 5 to synthesize modified cerium dioxide, so that the absorbance of cerium dioxide to short-wave blue light is increased, thereby increasing the resistance of the modified cerium dioxide to blue light, and the introduction of silver ions can also improve the antibacterial properties of the modified cerium dioxide.

[0035] In some embodiments of the present invention, the antioxidant is antioxidant 1076 or antioxidant 1010.

[0036] Another aspect of the present invention further provides a method for preparing the anti-blue light material described in the above technical solution, comprising the following steps:

[0037] The carrier resin, modified boron nitride, modified cerium dioxide and antioxidant are mixed, stirred, heated to melt, stirred, molded, cooled to room temperature, dried and solidified to obtain the anti-blue light material.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) The present invention synthesizes an anti-blue light material with carrier resin, modified boron nitride and modified cerium dioxide as main components. Through the synergistic effect between the components, the anti-blue light material has a good blue light blocking effect.

[0040] (2) The present invention is based on hexagonal boron nitride, and introduces a hydroxyl structure by subjecting it to a high temperature and ultrasound-assisted hydrolysis reaction in an alkaline solution. Then, polyethyleneimine is used to modify the hydroxylated boron nitride, introducing an amino group and a flexible chain structure, thereby improving the dispersibility of the modified boron nitride.

[0041] (3) The present invention uses cerium nitrate hexahydrate, ammonium acetate and butyl titanate as raw materials to prepare cerium dioxide @ titanium dioxide microspheres with a hollow core-shell structure, performs surface modification on the microspheres so that the microspheres have amino groups on their surfaces, then introduces graphene oxide, and finally performs a reduction reaction to synthesize cerium dioxide @ titanium dioxide / graphene microspheres. Polyethyleneimine, silver ammonia solution and ascorbic acid are further introduced to synthesize modified cerium dioxide, so that the modified cerium dioxide has the characteristics of blue light protection, ultraviolet protection and antibacterial.

[0042] (4) The anti-blue light material prepared by the present invention has a good blocking effect on high-energy blue light of 400-460nm, and can be widely used in the fields of anti-blue light lampshades, anti-blue light lenses and LED lamp protective films, and has good commercial application value. DETAILED DESCRIPTION

[0043] The present invention will be described below in conjunction with specific embodiments. It should be noted that the following embodiments are examples of the present invention and are only used to illustrate the present invention, but not to limit the present invention. Other combinations and various modifications within the concept of the present invention may be performed without departing from the spirit or scope of the present invention.

[0044] In the following examples and comparative examples, except for modified boron nitride and modified cerium dioxide, the other compound monomers and related reagents used can be purchased from the market, among which PC was purchased from Dongguan Jincheng New Materials Co., Ltd.; PET was purchased from Dongguan Julong Plastic Raw Materials Co., Ltd.; PMMA was purchased from Dongguan Jincheng New Materials Co., Ltd.; polyethyleneimine was purchased from Jiangsu Bost Chemical Technology Co., Ltd.; and hydrochloric acid was analytical grade.

[0045] Preparation Example 1

[0046] The synthesis method of modified boron nitride A comprises the following steps:

[0047] 1) Add 5 g of hexagonal boron nitride to 100 ml of 5 mol / L sodium hydroxide aqueous solution, stir at 120° C. for 24 h, centrifuge, wash with deionized water three times, add to 50 ml of deionized water, ultrasonicate at 300 W and 400 kHz for 16 h, centrifuge, take the supernatant, vacuum filter, and dry at 60° C. for 12 h to obtain hydroxylated boron nitride for use;

[0048] 2) 3 g of the hydroxylated boron nitride obtained in step 1) was added to 150 ml of a pH=8.5, 10 mM Tris buffer, ultrasonicated for 3 min, 0.9 g of polyethyleneimine was added, stirred for 4 h, centrifuged, washed with deionized water for 3 times, and dried at 60° C. for 20 h to obtain modified boron nitride A.

[0049] Preparation Example 2

[0050] The specific implementation method of modified boron nitride B is the same as that of modified boron nitride A, except that in step 2), the mass of polyethyleneimine is replaced with 0.4 g.

[0051] Preparation Example 3

[0052] The synthesis method of modified cerium dioxide A comprises the following steps:

[0053] (1) Add 6 g of glucose to 60 ml of deionized water, stir for 20 min, stir at 4 MPa and 180° C. for 12 h, cool to room temperature, centrifuge, wash with deionized water and anhydrous ethanol three times in sequence, and dry at 60° C. for 12 h to obtain product 1 for use;

[0054] (2) 0.4 g of cerium nitrate hexahydrate and 2 g of ammonium acetate were added to 50 ml of deionized water, and 0.2 g of the product 1 of step (1) was added, ultrasonicated for 30 min, stirred at 60° C. for 12 h, centrifuged, washed with deionized water and anhydrous ethanol three times in sequence, and dried at 60° C. for 12 h to obtain product 2 for later use;

[0055] (3) 0.8 g of butyl titanate and 20 ml of hydrochloric acid were added to 80 ml of anhydrous ethanol, and the product 2 of step (2) was added, ultrasonicated for 30 min, stirred at 4 MPa and 180° C. for 8 h, cooled to room temperature, centrifuged, washed with deionized water and anhydrous ethanol three times in sequence, dried at 60° C. for 12 h, and calcined at 600° C. for 3 h to obtain product 3 for later use;

[0056] (4) Add 2 g of the product 3 of step (3) to 100 ml of anhydrous ethanol, stir for 1 h, add 5 ml of 3-aminopropyltrimethoxysilane, stir at 60° C. for 4 h, centrifuge, wash with deionized water 3 times, stir at 60° C. for 12 h, and obtain product 4 for later use;

[0057] (5) Add 2 g of the product 4 of step (4) to 30 ml of deionized water, stir for 20 min, add 20 ml of 0.5 mg / ml graphene oxide aqueous solution, stir for 30 min, centrifuge, wash with deionized water 3 times, stir at 80 ° C for 12 h, add 20 ml of deionized water, stir at 4 MPa and 120 ° C for 12 h, cool to room temperature, centrifuge, wash with deionized water 3 times, stir at 60 ° C for 12 h, and obtain product 5 for use;

[0058] (6) Add 2 g of the product 5 of step (5) to 20 ml of anhydrous ethanol, stir for 15 min, add 10 ml of 2.5 g / ml polyethyleneimine anhydrous ethanol solution, stir for 10 min, add 9 g of triethylamine, stir for 40 min, add 350 ml of deionized water after the temperature stabilizes, stir for 1.5 h, filter, wash with deionized water and anhydrous ethanol three times in sequence, dry at 105 ° C for 2 h, and obtain product 6 for use;

[0059] (7) 1 g of the product 6 of step (6) was added to 30 ml of deionized water, ultrasonicated for 30 min, 5 ml of ammonia water was added dropwise, stirred for 10 min, 5 ml of 3 mg / ml silver ammonia solution was added under light-proof conditions, ultrasonicated for 15 min, 1.5 ml of 0.1 g / ml ascorbic acid aqueous solution was added, stirred for 5 h, filtered, washed with deionized water and anhydrous ethanol three times in sequence, and dried at 105° C. for 2 h to obtain modified cerium dioxide A.

[0060] Preparation Example 4

[0061] The specific implementation method of modified cerium dioxide B is the same as that of modified cerium dioxide A, except that in step (3), the mass of butyl titanate is replaced with 0.5 g.

[0062] Preparation Example 5

[0063] The specific implementation method of modified cerium dioxide C is the same as that of modified cerium dioxide A, except that in step (5), the volume of the graphene oxide aqueous solution is replaced with 12 ml.

[0064] Preparation Example 6

[0065] The specific implementation method of modified cerium dioxide D is the same as that of modified cerium dioxide A, except that in step (7), the volume of the ascorbic acid aqueous solution is replaced with 0.8 ml.

[0066] Example 1

[0067] A blue light protection material comprises the following raw materials by weight: 250 parts of PC, 3 parts of modified boron nitride A, 2.5 parts of modified cerium dioxide A, and 1.25 parts of antioxidant 1076.

[0068] The preparation method of the anti-blue light material in this embodiment comprises the following steps:

[0069] PC, modified boron nitride A, modified cerium dioxide A and antioxidant 1076 were mixed, stirred for 20 minutes, heated to melt, stirred for 20 minutes, put into a 5cm×5cm×2mm mold, cooled to room temperature, dried and solidified at room temperature to obtain the anti-blue light material.

[0070] Example 2

[0071] A blue light protection material comprises the following raw materials by weight: 150 parts of PET, 2 parts of modified boron nitride A, 1.5 parts of modified cerium dioxide A, and 0.5 parts of antioxidant 1010.

[0072] The preparation method of the anti-blue light material in this embodiment comprises the following steps:

[0073] PET, modified boron nitride A, modified cerium dioxide A and antioxidant 1010 were mixed, stirred for 20 minutes, heated to melt, stirred for 20 minutes, put into a 5cm×5cm×2mm mold, cooled to room temperature, dried and solidified at room temperature to obtain the anti-blue light material.

[0074] Example 3

[0075] A blue light protection material comprises the following raw materials by weight: 350 parts of PMMA, 4 parts of modified boron nitride A, 3.5 parts of modified cerium dioxide A, and 2 parts of antioxidant 1076.

[0076] The preparation method of the anti-blue light material in this embodiment comprises the following steps:

[0077] PMMA, modified boron nitride A, modified cerium dioxide A and antioxidant 1076 were mixed, stirred for 20 minutes, heated to melt, stirred for 20 minutes, put into a 5cm×5cm×2mm mold, cooled to room temperature, dried and solidified at room temperature to obtain the anti-blue light material.

[0078] Example 4

[0079] A blue light protection material comprises the following raw materials by weight: 200 parts of PC, 2.5 parts of modified boron nitride A, 2 parts of modified cerium dioxide A, and 1 part of antioxidant 1076.

[0080] The preparation method of the anti-blue light material in this embodiment is the same as that in Embodiment 1.

[0081] Example 5

[0082] A blue light protection material comprises the following raw materials by weight: 300 parts of PC, 4 parts of modified boron nitride A, 3 parts of modified cerium dioxide A, and 1.5 parts of antioxidant 1076.

[0083] The preparation method of the anti-blue light material in this embodiment is the same as that in Embodiment 1.

[0084] Example 6

[0085] This embodiment provides a blue light protection material and a preparation method thereof. The specific implementation method is the same as that of Embodiment 1, except that modified boron nitride B replaces modified boron nitride A in equal amounts.

[0086] Example 7

[0087] This embodiment provides a blue light protection material and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that modified cerium dioxide A is replaced by modified cerium dioxide B in equal amounts.

[0088] Example 8

[0089] This embodiment provides a blue light protection material and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that modified cerium dioxide A is replaced by modified cerium dioxide C in equal amounts.

[0090] Example 9

[0091] This embodiment provides a blue light protection material and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that modified cerium dioxide A is replaced by modified cerium dioxide D in equal amounts.

[0092] Comparative Example 1

[0093] This comparative example provides a blue light protection material and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that hexagonal boron nitride is used to replace modified boron nitride A in an equal amount.

[0094] Comparative Example 2

[0095] This comparative example provides a blue light protection material and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that an equal amount of cerium dioxide is used to replace modified cerium dioxide A.

[0096] Performance Testing

[0097] The anti-blue light performance of the anti-blue light materials of the above-mentioned Examples 1-9 and Comparative Examples 1-2 was tested, and the test results are shown in Table 1.

[0098] Use a spectrum analyzer to test the transmittance of blue light in the wavelength range of 400-460nm of the anti-blue light material, and then judge the anti-blue light performance of the anti-blue light material. The smaller the transmittance, the better the anti-blue light performance.

[0099] Table 1

[0100]

[0101] It can be seen from the data in Table 1 that the overall blue light transmittance of the anti-blue light materials in Examples 1-5 of the present invention is low for 400-460nm blue light, that is, it has good blue light protection performance. Among them, Example 6 changes the ratio between hydroxylated boron nitride and polyethyleneimine in the synthesis process of modified boron nitride, so that the dispersibility of modified boron nitride is not well improved, which leads to a decrease in the blue light protection performance of the material; Examples 7-9 change the addition ratio of key components during the preparation of modified cerium dioxide, so that the blue light protection performance of modified cerium dioxide is not well improved, which leads to a certain degree of decrease in the blue light protection performance of the material; Comparative Example 1 and Comparative Example 2 respectively use hexagonal boron nitride and cerium dioxide to replace modified boron nitride A and modified cerium dioxide A in equal amounts, and the test finds that the blue light transmittance of the anti-blue light materials for 400-460nm blue light increases, that is, the blue light protection performance shows poor results.

[0102] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A blue light protection material, characterized in that: In parts by weight, the anti-blue light material includes the following raw materials: 150-350 parts of carrier resin, 2-4 parts of modified boron nitride, 1.5-3.5 parts of modified cerium dioxide, and 0.5-2 parts of antioxidant.

2. The anti-blue light material according to claim 1, characterized in that: The carrier resin is any one of PC, PET and PMMA.

3. The anti-blue light material according to claim 1, characterized in that: The preparation method of the modified boron nitride comprises the following steps: 1) adding hexagonal boron nitride to a sodium hydroxide aqueous solution, stirring at 115-125° C. for 23-25 ​​hours, centrifuging, washing, adding to deionized water, ultrasonicating, centrifuging, taking the supernatant, vacuum filtering, and drying to obtain hydroxylated boron nitride for use; 2) Adding the hydroxylated boron nitride in step 1) into Tris buffer, ultrasonicating, adding polyethyleneimine, stirring, centrifuging, washing, and drying to obtain modified boron nitride.

4. The anti-blue light material according to claim 3, characterized in that: In the step 2), the mass ratio of hydroxylated boron nitride to polyethyleneimine is 1:(0.2-0.4).

5. The anti-blue light material according to claim 1, characterized in that: The preparation method of the modified cerium dioxide comprises the following steps: (1) adding glucose to deionized water, stirring, stirring at 3-5 MPa and 170-190° C. for 11-13 h, cooling to room temperature, centrifuging, washing, and drying to obtain product 1 for later use; (2) adding cerium nitrate hexahydrate and ammonium acetate into deionized water, adding the product 1 of step (1), ultrasonicating, stirring at 55-65° C. for 11-13 h, centrifuging, washing, and drying to obtain product 2 for later use; (3) adding butyl titanate and hydrochloric acid to anhydrous ethanol, adding the product 2 of step (2), ultrasonicating, stirring at 3-5 MPa and 170-190° C. for 7-9 h, cooling to room temperature, centrifuging, washing, drying, and calcining to obtain product 3 for later use; (4) adding the product 3 of step (3) to anhydrous ethanol, stirring, adding 3-aminopropyltrimethoxysilane, stirring at 55-65° C. for 3-5 h, centrifuging, washing, and drying to obtain product 4 for later use; (5) adding the product 4 of step (4) into deionized water, stirring, adding the graphene oxide aqueous solution, stirring, centrifuging, washing, drying, and then adding into deionized water, stirring at 3-5 MPa and 110-130° C. for 11-13 h, cooling to room temperature, centrifuging, washing, drying, and obtaining the product 5 for use; (6) adding the product 5 of step (5) to anhydrous ethanol, stirring, adding the anhydrous ethanol solution of polyethyleneimine, stirring, adding triethylamine, stirring, adding deionized water after the temperature stabilizes, stirring, filtering, washing, and drying to obtain the product 6 for use; (7) Add the product 6 of step (6) into deionized water, sonicate, dropwise add aqueous ammonia, stir, add silver ammonia solution in a dark environment, sonicate, add aqueous ascorbic acid solution, stir, filter, wash, and dry to obtain modified cerium dioxide.

6. The anti-blue light material according to claim 5, characterized in that: The mass ratio of the cerium nitrate hexahydrate to butyl titanate is 1:(1.5-2.5).

7. The method for preparing the anti-blue light material according to claim 5, characterized in that: In the step (5), the mass ratio of the product 4 to the graphene oxide in the graphene oxide aqueous solution is 1:(0.004-0.006).

8. The anti-blue light material according to claim 5, characterized in that: In the step (7), the mass ratio of the product 6 to the ascorbic acid in the ascorbic acid aqueous solution is 1:(0.1-0.2).

9. The anti-blue light material according to claim 1, characterized in that: The antioxidant is antioxidant 1076 or antioxidant 1010.

10. A method for preparing the blue light blocking material according to any one of claims 1 to 9, characterized in that: The following steps are involved: The carrier resin, modified boron nitride, modified cerium dioxide and antioxidant are mixed, stirred, heated to melt, stirred, molded, cooled to room temperature, dried and solidified to obtain the anti-blue light material.

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