CN-121991561-A - Energy-storage luminous paint and preparation method thereof

Abstract

The invention discloses an energy storage luminous paint and a preparation method thereof, and belongs to the technical field of paint. According to the invention, the energy storage luminescent material is modified, the affinity of luminescent powder and resin is improved and the surface defect is filled by using aluminate treatment, and then the SiO 2 layer formed by hydrolysis of tetraethoxysilane is coated, so that 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, thereby greatly improving the energy storage and afterglow luminescent life of the coating and solving the problems that the traditional luminescent coating is easy to blacken and has rapid luminescent intensity attenuation. In addition, the modified fluorosilicone resin is added into the aqueous emulsion, and then the modified energy-storage luminescent material is added, and under the synergistic effect of the ultraviolet absorber, the ageing resistance of the coating can be obviously improved, and the synergistic effect of the anti-settling agent and the rheological additive is added, so that the high-density modified energy-storage luminescent material is effectively prevented from settling in the storage process, and the coating adhesive force, the weather resistance and the luminescent effect are excellent as a whole.

Inventors

• Tan Hexuan
• TAN QINGFENG
• ZHOU LIPING

Assignees

• 广东鑫皇冠新材料有限公司

Dates

Publication Date

20260508

Application Date

20260320

Claims (10)

1. 1. The energy-storage luminous paint is characterized by comprising, by weight, 30-50 parts of an aqueous emulsion, 9-15 parts of modified fluorosilicone resin, 15-20 parts of a modified energy-storage luminous material, 10-15 parts of a curing agent, 0.5-1 part of an ultraviolet absorbent, 0.5-2 parts of a dispersing agent, 1-3 parts of a film forming agent, 0.1-0.5 part of an antifoaming agent, 0.5-2 parts of an anti-settling agent and 0.1-3 parts of a rheological aid.
2. 2. The energy-storage luminescent coating according to claim 1, wherein the modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyl trimethoxysilane, and the hydroxyl value is 40-80 mgKOH/g.
3. 3. The energy-storing luminescent paint according to claim 1, wherein the preparation method of the modified energy-storing luminescent material comprises the following steps: And (3) annealing the rare earth aluminate luminescent powder, cooling, adding the rare earth aluminate luminescent powder into a mixed solution of ethanol and deionized water, uniformly dispersing by ultrasonic, adding ammonia water to adjust the pH value to 8-9, adding aluminate under the stirring condition, stirring and reacting for 2-4 hours at 40-60 ℃, adding tetraethoxysilane, reacting for 4-6 hours at 40-60 ℃, and centrifuging, washing and drying the product to obtain the modified energy-storage luminescent material.
4. 4. The energy-storing luminescent paint according to claim 3, wherein the annealing treatment is carried out in a nitrogen atmosphere at 600-800 ℃ for 1-3 hours.
5. 5. The energy-storage luminescent paint according to claim 3, wherein the proportion of the rare earth aluminate luminescent powder, the aluminate and the tetraethoxysilane is (10-20): 0.1-2): 0.1-0.5 according to the weight portion ratio.
6. 6. The energy-storage luminescent coating according to claim 3, wherein the volume ratio of ethanol to water in the mixed solution of ethanol and deionized water is (5-8): 2-5.
7. 7. The energy-storing luminescent paint according to claim 1, wherein the curing agent is at least one of hexamethylene diisocyanate biuret and isophorone diisocyanate trimer.
8. 8. The energy storage luminescent coating of claim 1, wherein the ultraviolet absorber is a benzotriazole-based ultraviolet absorber.
9. 9. The energy-storing and light-emitting coating according to claim 1, wherein the dispersing agent is at least one of a polyurethane type polymer dispersing agent or a polyacrylate ammonium salt.
10. 10. A method for preparing the energy-storing luminous paint, which is characterized in that the method is used for preparing the energy-storing luminous paint as claimed in any one of claims 1 to 9, and comprises the following steps: s, mixing the aqueous emulsion, the modified fluorine-containing silicone resin, the dispersing agent, the defoaming agent, the anti-settling agent and the rheological additive, and stirring at the rotation speed of 300-500 r/min for 1-5 h at the temperature of 60-70 ℃ to obtain a mixture A; s2, adding a modified energy storage luminescent material and an ultraviolet absorber into the mixture A, and stirring at a rotating speed of 800-1500 r/min for 30-60 min to obtain a mixture B; S3, adding a curing agent and a film forming agent into the mixture B, stirring at a rotating speed of 300-500 r/min for 1-3 h, standing and curing for 20-30 min, and thus obtaining the energy storage luminescent coating.

Description

Energy-storage luminous paint and preparation method thereof Technical Field The invention relates to the technical field of coatings, in particular to an energy storage luminous coating and a preparation method thereof. Background The energy-storage luminous paint is used as a functional paint, can be excited under natural light or artificial light source, stores energy, and is slowly released in a visible light form in a dark environment, so as to realize an autonomous luminous function. The device has the advantages of no need of an external power supply, convenient installation, zero energy consumption and the like, and has wide application prospect in the fields of emergency indication, building decoration, traffic safety, electronic display and the like. With the increasing importance of society on public safety and the rising concepts of green illumination, smart cities and the like, the market has put higher demands on the performance of energy storage luminescent paint. The traditional emergency evacuation indication system is mostly dependent on an external power supply, and once emergency such as power failure occurs, the risk of indication failure exists, and potential safety hazard is huge. However, the conventional common luminescent paint mostly adopts a first generation zinc sulfide (ZnS) or a second generation strontium aluminate (SrAl 2O4) luminescent material. Wherein, znS material has poor chemical stability, easy hydrolysis and short afterglow time, and is difficult to meet the requirement of long-acting indication. Although the afterglow performance of strontium aluminate (Eu 2+, Dy3+ doped) materials is obviously improved, the technical problems to be solved are that the high-performance strontium aluminate luminescent powder is firstly selected and depends on rare earth elements (such as europium and dysprosium), and the rare earth resources are rare, so that the raw material cost is high, and the popularization of the high-performance strontium aluminate luminescent powder in the civil field is limited. Meanwhile, the particle size of the luminescent powder is larger, so that the coating is rough and poor in adhesive force, and the luminescent powder is difficult to apply to thin coating, high gloss or flexible substrate scenes. Then, the inorganic luminescent powder has large difference in refractive index and surface property with the organic coating matrix (such as acrylic resin and epoxy resin), poor compatibility of the inorganic luminescent powder and the organic coating matrix, and easy agglomeration and precipitation of the luminescent powder in the coating, thereby not only affecting the workability and storage stability of the coating, but also reducing the compactness and luminous uniformity of the coating. Finally, the product has single function and insufficient weather resistance, and the existing product has a light-emitting function, is corroded by ultraviolet rays, moisture and oxygen when used outdoors for a long time, is easy to cause problems of yellowing, chalking, serious light-emitting attenuation and the like, has poor light-retaining rate and durability, and cannot meet the application requirements under outdoor severe environments. And the fresh products can integrate multiple functions of antibiosis, heat conduction and the like, and are difficult to adapt to complex application scenes in the emerging field. Therefore, the energy storage luminescent coating which can overcome the defects, has high energy storage luminescence efficiency, good compatibility with a base material and excellent weather resistance and multifunction, and the preparation method thereof have important practical significance and market value. Disclosure of Invention Based on the above, in order to solve one of the above technical problems, the invention provides an energy storage luminescent coating and a preparation method thereof, and the specific technical scheme is as follows: The energy-storage luminous paint comprises, by weight, 30-50 parts of aqueous emulsion, 9-15 parts of modified fluorosilicone resin, 15-20 parts of modified energy-storage luminous material, 10-15 parts of curing agent, 0.5-1 part of ultraviolet absorbent, 0.5-2 parts of dispersing agent, 1-3 parts of film forming agent, 0.1-0.5 part of defoaming agent, 0.5-2 parts of anti-settling agent and 0.1-3 parts of rheological auxiliary agent. Further, the modified fluorosilicone resin is a copolymer of perfluoroalkyl ethyl acrylate and vinyl trimethoxy silane, and the hydroxyl value is 40-80 mgKOH/g. Further, the preparation method of the modified energy storage luminescent material comprises the following steps: And (3) annealing the rare earth aluminate luminescent powder, cooling, adding the rare earth aluminate luminescent powder into a mixed solution of ethanol and deionized water, uniformly dispersing by ultrasonic, adding ammonia water to adjust the pH value to 8-9, adding aluminate under the stirring cond