Energy-storage luminescent coating and preparation method thereof

Abstract

The invention discloses an energy-storage luminescent coating and a preparation method thereof, and belongs to the technical field of coatings. According to the invention, the energy storage luminescent material is subjected to modification treatment, and aluminate is used for treatment, so that the affinity of luminescent powder and resin is improved, and surface defects are filled up; according to the energy-storage luminescent material, the SiO2 layer formed by hydrolysis of tetraethoxysilane is coated, and the formed compact composite coating layer obviously enhances the hydrolysis resistance of the energy-storage luminescent material and prevents the degradation of a luminescent matrix, so that the energy storage and afterglow luminescence life of the coating is greatly prolonged, and the problems that the traditional luminescent coating is easy to blacken and the luminescence intensity is quickly attenuated are solved. Besides, modified fluorosilicone resin is added into the water-based emulsion, then the modified energy-storage luminescent material is added, under the synergistic effect of the ultraviolet absorbent, the aging resistance of the coating can be remarkably improved, under the synergistic effect of the added anti-settling agent and the rheological additive, the high-density modified energy-storage luminescent material is effectively prevented from settling in the storage process, and the anti-aging performance of the coating is improved. And the whole coating has excellent adhesive force, weather resistance and luminous effect.

Description

Technical Field

[0001] This invention relates to the field of coating technology, and more specifically, to an energy storage luminescent coating and its preparation method. Background Technology

[0002] Energy-storing luminescent coatings, as a type of functional coating, can be excited and store energy under natural or artificial light sources, and slowly release it as visible light in dark environments, thus achieving self-luminescence. Due to its advantages such as requiring no external power supply, convenient installation, and zero energy consumption, it shows broad application prospects in fields such as emergency signage, architectural decoration, traffic safety, and electronic displays.

[0003] With increasing societal emphasis on public safety and the rise of concepts such as green lighting and smart cities, the market is placing higher demands on the performance of energy storage luminescent coatings. Traditional emergency evacuation indicator systems largely rely on external power sources, posing a significant safety hazard in the event of power outages or other emergencies. Existing common luminescent coatings mostly utilize first-generation zinc sulfide (ZnS) or second-generation strontium aluminate (SrAl2O4) luminescent materials. However, ZnS-based materials exhibit poor chemical stability, are prone to hydrolysis, and have short afterglow times, making them unsuitable for long-term indication. SrAl2O4-based materials (doped with Eu...) 2+ , Dy 3+ While the afterglow performance of the material has been significantly improved, the following technical problems still need to be addressed: First, high-performance strontium aluminate luminescent powder relies on rare earth elements (such as europium and dysprosium). Due to the scarcity of rare earth resources, the raw material cost is high, limiting its widespread use in the civilian field. Simultaneously, the large particle size of the luminescent powder results in a rough coating and poor adhesion, making it difficult to apply to thin-coat, high-gloss, or flexible substrate scenarios. Second, the significant differences in refractive index and surface properties between inorganic luminescent powder and organic coating matrices (such as acrylic resin and epoxy resin) lead to poor compatibility, easily causing the luminescent powder to agglomerate and precipitate in the coating. This not only affects the coating's application performance and storage stability but also reduces the coating's density and luminescence uniformity. Finally, the product suffers from limited functionality and insufficient weather resistance: existing products mostly only possess luminescence functionality. When used outdoors for extended periods, they are susceptible to yellowing, chalking, and severe luminescence decay due to UV radiation, moisture, and oxygen erosion. Their poor luminescence retention and durability fail to meet the application requirements of harsh outdoor environments. Furthermore, few products can integrate multiple functions such as antibacterial and thermal conductivity, making it difficult to adapt to the complex application scenarios in emerging fields.

[0004] Therefore, developing an energy storage and luminescent coating that can overcome the above-mentioned defects, has high efficiency in energy storage and luminescence, good compatibility with substrates, and excellent weather resistance and multifunctionality, as well as its preparation method, has important practical significance and market value. Summary of the Invention

[0005] In view of this, in order to solve one of the above-mentioned technical problems, the present invention provides an energy storage luminescent coating and its preparation method, the specific technical solution of which is as follows:

[0006] An energy storage luminescent coating, comprising the following raw materials in parts by weight: 30-50 parts of aqueous emulsion, 9-15 parts of modified fluorosilicone resin, 15-20 parts of modified energy storage luminescent material, 10-15 parts of curing agent, 0.5-1 part of ultraviolet absorber, 0.5-2 parts of dispersant, 1-3 parts of film-forming agent, 0.1-0.5 parts of defoamer, 0.5-2 parts of anti-settling agent, and 0.1-3 parts of rheology modifier.

[0007] Furthermore, the modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane, with a hydroxyl value of 40~80 mgKOH / g.

[0008] Furthermore, the preparation method of the modified energy storage and luminescent material is as follows: Rare earth aluminate luminescent powder was annealed, cooled, and then added to a mixed solution of ethanol and deionized water. The mixture was ultrasonically dispersed and the pH was adjusted to 8-9 by adding ammonia. Aluminate ester was added under stirring and the mixture was stirred and reacted at 40-60℃ for 2-4 hours. Tetraethyl orthosilicate was then added and the mixture was reacted at 40-60℃ for 4-6 hours. The product was centrifuged, washed, and dried to obtain the modified energy storage luminescent material.

[0009] Furthermore, the annealing process is performed at 600~800℃ for 1~3 hours in a nitrogen atmosphere.

[0010] Further, by weight, the ratio of the rare earth aluminate luminescent powder, aluminate, and tetraethyl orthosilicate is (10~20):(0.1~2):(0.1~0.5).

[0011] Furthermore, in the mixture of ethanol and deionized water, the volume ratio of ethanol to water is (5~8):(2~5).

[0012] Furthermore, the curing agent is at least one of hexamethylene diisocyanate biuret and isophorone diisocyanate trimer.

[0013] Furthermore, the ultraviolet absorber is a benzotriazole ultraviolet absorber.

[0014] Furthermore, the dispersant is at least one of a polyurethane-type polymeric dispersant or an ammonium polyacrylate.

[0015] In addition, the present invention also provides a method for preparing an energy storage luminescent coating, the method comprising the following steps: S. Mix the aqueous emulsion, modified fluorosilicone resin, dispersant, defoamer, anti-settling agent and rheology modifier, and stir at 300 r / min to 500 r / min for 1 to 5 hours at 60 to 70°C to obtain mixture A; S2. Add the modified energy storage luminescent material and the ultraviolet absorber to the mixture A, and stir at a speed of 800 r / min to 1500 r / min for 30 min to 60 min to obtain mixture B; S3. Add curing agent and film-forming agent to the mixture B, stir at a speed of 300r / min~500r / min for 1~3h, let stand and mature for 20~30min to obtain energy storage luminescent coating.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention modifies the energy storage luminescent material by using aluminate treatment to improve the affinity between the luminescent powder and the resin and fill surface defects; then, it coats the material with a SiO2 layer formed by the hydrolysis of tetraethyl orthosilicate. The resulting dense composite coating layer significantly enhances the hydrolysis resistance of the energy storage luminescent material and prevents the degradation of the luminescent matrix, thereby greatly improving the energy storage and afterglow luminescence lifetime of the coating and solving the problems of easy blackening and rapid decay of luminescence intensity in traditional luminescent coatings.

[0017] 2. This invention significantly improves the weather resistance of coatings by adding modified fluorosilicone resin to an aqueous emulsion, followed by the addition of modified energy storage and luminescent materials, and with the synergistic effect of ultraviolet absorbers.

[0018] 3. This invention, through optimization of the composition and component ratios, and by the synergistic effect of adding anti-settling agents and rheology modifiers, effectively prevents the high-density modified energy storage and luminescent materials from settling during storage. Simultaneously, the use of specific dispersants ensures the uniform distribution of the modified energy storage and luminescent materials in the resin, resulting in good leveling properties during coating application, preventing agglomeration or pinholes, ensuring uniform coating appearance, and exhibiting excellent overall adhesion, weather resistance, and significant luminescent effect. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] An embodiment of the present invention provides an energy storage luminescent coating comprising the following raw materials in parts by weight: 30-50 parts of aqueous emulsion, 9-15 parts of modified fluorosilicone resin, 15-20 parts of modified energy storage luminescent material, 10-15 parts of curing agent, 0.5-1 part of ultraviolet absorber, 0.5-2 parts of dispersant, 1-3 parts of film-forming agent, 0.1-0.5 parts of defoamer, 0.5-2 parts of anti-settling agent, and 0.1-3 parts of rheology modifier.

[0022] In one embodiment, the aqueous emulsion is an acrylic emulsion.

[0023] In one embodiment, the modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane, with a hydroxyl value of 40~80 mgKOH / g.

[0024] In one embodiment, the method for preparing the modified energy storage and luminescent material is as follows: Rare earth aluminate luminescent powder was annealed, cooled, and then added to a mixed solution of ethanol and deionized water. The mixture was ultrasonically dispersed and the pH was adjusted to 8-9 by adding ammonia. Aluminate ester was added under stirring and the mixture was stirred and reacted at 40-60℃ for 2-4 hours. Tetraethyl orthosilicate was then added and the mixture was reacted at 40-60℃ for 4-6 hours. The product was centrifuged, washed, and dried to obtain the modified energy storage luminescent material.

[0025] In one embodiment, the rare-earth aluminate luminescent powder has the general chemical formula SrAl2O4:Eu 2+ , Dy 3+ Its particle size is 10~50μm.

[0026] In one embodiment, the annealing process is performed at 600-800°C for 1-3 hours in a nitrogen atmosphere.

[0027] In one embodiment, the ratio of rare earth aluminate luminescent powder, aluminate ester, and tetraethyl orthosilicate by weight is (10~20):(0.1~2):(0.1~0.5).

[0028] In one embodiment, the volume ratio of ethanol to water in the mixture of ethanol and deionized water is (5~8):(2~5).

[0029] In one embodiment, the drying temperature is 80~100°C and the drying time is 8~12h.

[0030] In one embodiment, the curing agent is at least one of hexamethylene diisocyanate biuret and isophorone diisocyanate trimer.

[0031] In one embodiment, the ultraviolet absorber is a benzotriazole ultraviolet absorber.

[0032] In one embodiment, the ultraviolet absorber is one of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole and 2-(2'-hydroxy-3',5'-di-tert-pentyl)-benzotriazole.

[0033] In one embodiment, the dispersant is at least one of a polyurethane-type polymeric dispersant or an ammonium polyacrylate. Preferably... In one embodiment, the film-forming agent is at least one of propylene glycol methyl ether acetate and a diester.

[0034] In one embodiment, the defoamer is a polyether-modified silicone defoamer.

[0035] In one embodiment, the anti-settling agent is a polyamide wax.

[0036] In one embodiment, the rheology modifier is fumed silica.

[0037] In addition, the present invention also provides a method for preparing an energy storage luminescent coating, the method comprising the following steps: S. The aqueous emulsion, modified fluorosilicone resin, dispersant, defoamer, anti-settling agent and rheology modifier are stirred at 60~70℃ and 300r / min~500r / min for 1~5h to obtain mixture A; S2. Add the modified energy storage luminescent material and the ultraviolet absorber to the mixture A, and stir at a speed of 800 r / min to 1500 r / min for 30 min to 60 min to obtain mixture B; S3. Add curing agent and film-forming agent to the mixture B, stir at a speed of 300r / min~500r / min for 1~3h, let stand and mature for 20~30min to obtain energy storage luminescent coating.

[0038] The above scheme, after optimization of composition and component ratio, can obtain a coating with uniform dispersion and stable performance. The coating formed by the coating has excellent adhesion, weather resistance and luminescence effect.

[0039] The implementation schemes of the present invention will now be described in detail with reference to specific embodiments.

[0040] Example 1: A method for preparing an energy storage and luminescent coating, the method comprising the following steps: S1. By weight, 45 parts of acrylic emulsion, 12 parts of modified fluorosilicone resin, 1 part of polyurethane polymeric dispersant, 0.3 parts of polyether modified silicone defoamer, 1 part of polyamide wax and 1 part of fumed silica are stirred at 65°C and 300 r / min for 2 h to obtain mixture A. The modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane, with a hydroxyl value of 60 mg KOH / g. The preparation method of the modified energy storage and luminescent material is as follows: By weight, 18 parts of rare earth aluminate luminescent powder were treated at 600℃ for 2 hours in a nitrogen atmosphere. After cooling, they were added to a mixed solution of 50 parts of ethanol and deionized water (volume ratio of ethanol to deionized water was 7:3). The mixture was ultrasonically dispersed and the pH was adjusted to 9 by adding ammonia. One part of aluminate was added under stirring and the mixture was stirred at 45℃ for 3 hours. Then, 0.5 parts of tetraethyl orthosilicate was added and the mixture was reacted at 60℃ for 5 hours. The product was centrifuged, washed, and then dried at 85℃ for 10 hours to obtain the modified energy storage luminescent material. The general chemical formula of the rare earth aluminate luminescent powder is SrAl2O4:Eu 2+ , Dy 3+ Its particle size is 45 μm; S2. Add 15 parts of modified energy storage luminescent material and 0.6 parts of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole to the mixture A, and stir at 800 r / min for 45 min to obtain mixture B; S3. Add 10 parts of hexamethylene diisocyanate biuret and 2-propylene glycol methyl ether acetate to the mixture B, stir at 300 r / min for 2 h, and let stand for 30 min to mature, to obtain the energy storage luminescent coating.

[0041] Example 2: A method for preparing an energy storage and luminescent coating, the method comprising the following steps: S1. By weight, 46 parts of acrylic emulsion, 11 parts of modified fluorosilicone resin, 1 part of polyurethane polymeric dispersant, 0.4 parts of polyether modified silicone defoamer, 1 part of polyamide wax and 1 part of fumed silica are stirred at 70°C and 300 r / min for 2 h to obtain mixture A. The modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane, with a hydroxyl value of 60 mg KOH / g. The preparation method of the modified energy storage and luminescent material is as follows: By weight, 18 parts of rare earth aluminate luminescent powder were treated at 600℃ for 2 hours in a nitrogen atmosphere. After cooling, they were added to a mixed solution of 50 parts of ethanol and deionized water (volume ratio of ethanol to deionized water was 7:3). The mixture was ultrasonically dispersed and the pH was adjusted to 9 by adding ammonia. One part of aluminate was added under stirring and the mixture was stirred at 60℃ for 3 hours. Then, 0.5 parts of tetraethyl orthosilicate was added and the mixture was reacted at 60℃ for 5 hours. The product was centrifuged, washed, and then dried at 85℃ for 10 hours to obtain the modified energy storage luminescent material. The general chemical formula of the rare earth aluminate luminescent powder is SrAl2O4:Eu 2+ , Dy 3+ Its particle size is 45 μm; S2. Add 16 parts of modified energy storage luminescent material and 0.5 parts of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole to the mixture A, and stir at 800 r / min for 45 min to obtain mixture B; S3. Add 12 parts of hexamethylene diisocyanate biuret and 3 parts of propylene glycol methyl ether acetate to the mixture B, stir at 300 r / min for 2 h, and let stand for 30 min to mature, to obtain the energy storage luminescent coating.

[0042] Example 3: A method for preparing an energy storage and luminescent coating, the method comprising the following steps: S1. By weight, 48 parts of acrylic emulsion, 12 parts of modified fluorosilicone resin, 2 parts of polyurethane polymeric dispersant, 0.5 parts of polyether modified silicone defoamer, 1 part of polyamide wax and 1 part of fumed silica are stirred at 70°C and 300 r / min for 2 h to obtain mixture A. The modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane, with a hydroxyl value of 60 mg KOH / g. The preparation method of the modified energy storage and luminescent material is as follows: By weight, 18 parts of rare earth aluminate luminescent powder were treated at 600℃ for 2 hours in a nitrogen atmosphere. After cooling, they were added to a mixed solution of 50 parts of ethanol and deionized water (volume ratio of ethanol to deionized water was 7:3). The mixture was ultrasonically dispersed and the pH was adjusted to 9 by adding ammonia. One part of aluminate was added under stirring and the mixture was stirred at 60℃ for 3 hours. Then, 0.5 parts of tetraethyl orthosilicate was added and the mixture was reacted at 60℃ for 5 hours. The product was centrifuged, washed, and then dried at 85℃ for 10 hours to obtain the modified energy storage luminescent material. The general chemical formula of the rare earth aluminate luminescent powder is SrAl2O4:Eu 2+ , Dy 3+ Its particle size is 45 μm; S2. Add 18 parts of modified energy storage luminescent material and 0.7 parts of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole to the mixture A, and stir at 800 r / min for 45 min to obtain mixture B; S3. Add 12 parts of hexamethylene diisocyanate biuret and 3 parts of propylene glycol methyl ether acetate to the mixture B, stir at 300 r / min for 2 h, and let stand for 30 min to mature, to obtain the energy storage luminescent coating.

[0043] Comparative Example 1: The difference between Comparative Example 1 and Example 3 is that no modified fluorosilicone resin (a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane) was added in Comparative Example 1, while the rest was the same as in Example 3.

[0044] Comparative Example 2: The difference between Comparative Example 2 and Example 3 is that the preparation method of the modified energy storage luminescent material in Comparative Example 2 is different, while the rest is the same as in Example 3; The preparation method of the modified energy storage and luminescence material in Comparative Example 2 is as follows: By weight, 18 parts of rare earth aluminate luminescent powder were treated at 600℃ for 2 hours in a nitrogen atmosphere. After cooling, they were added to a mixed solution of 50 parts of ethanol and deionized water (volume ratio of ethanol to deionized water was 7:3). The mixture was ultrasonically dispersed and the pH was adjusted to 9 by adding ammonia. One part of aluminate was added under stirring and the mixture was stirred at 60℃ for 5 hours. The product was centrifuged, washed, and then dried at 85℃ for 10 hours to obtain the modified energy storage luminescent material.

[0045] Comparative Example 3: The difference between Comparative Example 3 and Example 3 is that the preparation method of the modified energy storage luminescent material in Comparative Example 3 is different, while the rest is the same as in Example 3; The preparation method of the modified energy storage and luminescence material in Comparative Example 2 is as follows: By weight, 18 parts of rare earth aluminate luminescent powder were treated at 600℃ for 2 hours in a nitrogen atmosphere. After cooling, they were added to a mixed solution of 50 parts of ethanol and deionized water (volume ratio of ethanol to deionized water was 7:3). The mixture was ultrasonically dispersed and the pH was adjusted to 9 by adding ammonia. 0.5 parts of tetraethyl orthosilicate were added under stirring and the mixture was reacted at 60℃ for 5 hours. The product was centrifuged, washed, and then dried at 85℃ for 10 hours to obtain the modified energy storage luminescent material.

[0046] Comparative Example 4: The difference between Comparative Example 4 and Example 3 is that Comparative Example 4 uses an energy storage luminescent material to replace the modified energy storage luminescent material (i.e., it has not undergone modification treatment), while the rest is the same as Example 3.

[0047] Comparative Example 5: The difference between Comparative Example 5 and Example 3 is that no anti-settling agent was added in Comparative Example 5, but otherwise it is the same as Example 3.

[0048] The coating samples prepared in Examples 1-3 and Comparative Examples 1-5 were sprayed onto tinplate or glass plates to a thickness of 100 μm and cured at room temperature for 7 days to obtain test samples. The following performance tests were then conducted. The results are shown in Table 1 below. The adhesion test refers to GB / T9286-2021; the method is as follows: cut a grid on the coating surface with a cross-cutting tool, stick it with tape and observe the grid detachment. The rating is from level 0 (the cut edge is completely smooth and no grid detachment) to level 5.

[0049] The aging resistance test followed JG / T446-2014, and the method was as follows: continuous irradiation for 500 hours using a UV aging test chamber. After the test, the appearance changes of the samples (discoloration, chalking, and loss of gloss) were observed. Comparative Example 1 (ordinary resin) showed obvious yellowing and chalking, while the coating of the example sample remained basically intact, verifying the excellent weather resistance of fluorosilicone resin.

[0050] The luminescence performance test method is as follows: Place the sample coated with energy-storing luminescent paint under a standard light source (such as a D65 light source) and excite it for 10 minutes at a specified illuminance. Immediately after 10 minutes of excitation, measure the luminous intensity (unit: mcd / m²). 2 This value is recorded as the initial brightness value; the brightness is then monitored until it decays to a specific threshold (0.32 mcd / m). 2 The time required is denoted as the afterglow time.

[0051] The water resistance test method is as follows: Immerse the coated sample in distilled or deionized water at a temperature of 23±2℃. After immersion for 24 hours, remove the sample and observe whether the paint film exhibits blistering, peeling, discoloration (such as the luminescent powder turning black), or loss of gloss.

[0052] Table 1: Performance Test Results

[0053] As can be seen from the data analysis in Table 2, the present invention can obtain a coating with excellent adhesion, excellent weather resistance (aging resistance) and significant luminescence performance by optimizing the composition and component ratio. Compared to Example 3, Comparative Example 1 did not add modified fluorosilicone resin, resulting in fewer flexible segments and lower crosslinking density in the system, weakened coating cohesion, and significantly reduced UV resistance. The resin matrix was directly attacked by UV rays, leading to yellowing and chalking, resulting in performance inferior to Example 3. Comparative Example 2 used a different preparation method for its modified energy storage luminescent material, employing only aluminate treatment. Aluminate can only improve dispersibility and fill some defects, but it cannot provide a dense physical barrier and cannot effectively block water for a long time, resulting in performance inferior to Example 3. Comparative Example 3 used a different preparation method for its modified energy storage luminescent material, without aluminate pretreatment, resulting in an uneven coating layer and weak interfacial bonding, leading to performance inferior to Example 3. Comparative Example 4 was unmodified, and the unmodified luminescent powder surface was hydrophilic and oleophobic, resulting in poor compatibility with the resin matrix, leading to a large amount of agglomeration and voids, severely damaging the integrity of the coating and affecting its water resistance, resulting in a luminescent effect inferior to Example 3. Comparative Example 5 did not add an anti-settling agent, and the high-density luminescent powder settled in the coating, resulting in uneven distribution and affecting coating performance.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An energy storage and luminescent coating, characterized in that, The energy storage luminescent coating comprises the following raw materials in parts by weight: 30-50 parts of aqueous emulsion, 9-15 parts of modified fluorosilicone resin, 15-20 parts of modified energy storage luminescent material, 10-15 parts of curing agent, 0.5-1 part of ultraviolet absorber, 0.5-2 parts of dispersant, 1-3 parts of film-forming agent, 0.1-0.5 parts of defoamer, 0.5-2 parts of anti-settling agent, and 0.1-3 parts of rheology modifier.

2. The energy storage and luminescent coating according to claim 1, characterized in that, The modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyltrimethoxysilane, with a hydroxyl value of 40~80 mgKOH / g.

3. The energy storage and luminescent coating according to claim 1, characterized in that, The preparation method of the modified energy storage and luminescent material is as follows: Rare earth aluminate luminescent powder was annealed, cooled, and then added to a mixed solution of ethanol and deionized water. The mixture was ultrasonically dispersed and the pH was adjusted to 8-9 by adding ammonia. Aluminate ester was added under stirring and the mixture was stirred and reacted at 40-60℃ for 2-4 hours. Tetraethyl orthosilicate was then added and the mixture was reacted at 40-60℃ for 4-6 hours. The product was centrifuged, washed, and dried to obtain the modified energy storage luminescent material.

4. The energy storage and luminescent coating according to claim 3, characterized in that, The annealing process is performed at 600-800°C for 1-3 hours in a nitrogen atmosphere.

5. The energy storage and luminescent coating according to claim 3, characterized in that, The ratio of rare earth aluminate luminescent powder, aluminate ester, and tetraethyl orthosilicate by weight is (10~20):(0.1~2):(0.1~0.5).

6. The energy storage and luminescent coating according to claim 3, characterized in that, In the mixture of ethanol and deionized water, the volume ratio of ethanol to water is (5~8):(2~5).

7. The energy storage and luminescent coating according to claim 1, characterized in that, The curing agent is at least one of hexamethylene diisocyanate biuret and isophorone diisocyanate trimer.

8. The energy storage and luminescent coating according to claim 1, characterized in that, The ultraviolet absorber is a benzotriazole ultraviolet absorber.

9. The energy storage and luminescent coating according to claim 1, characterized in that, The dispersant is at least one of a polyurethane-type polymeric dispersant or an ammonium polyacrylate.

10. A method for preparing an energy storage and luminescent coating, characterized in that, The preparation method is used to prepare the energy storage and luminescent coating as described in any one of claims 1 to 9, and the preparation method includes the following steps: S. Mix the aqueous emulsion, modified fluorosilicone resin, dispersant, defoamer, anti-settling agent and rheology modifier, and stir at 300 r / min to 500 r / min for 1 to 5 hours at 60 to 70°C to obtain mixture A; S2. Add the modified energy storage luminescent material and the ultraviolet absorber to the mixture A, and stir at a speed of 800 r / min to 1500 r / min for 30 min to 60 min to obtain mixture B; S3. Add curing agent and film-forming agent to the mixture B, stir at a speed of 300r / min~500r / min for 1~3h, let stand and mature for 20~30min to obtain energy storage luminescent coating.

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