Energy-storage light-emitting coating and preparation method thereof

Abstract

The invention provides energy-storage light-emitting coating and a preparation method thereof. The energy-storage light-emitting coating comprises, by mass percentage, 15-25% of energy-storage light-emitting powder, 60-70% of waterborne resin, 1-2% of polyamide wax and the balance solvent, wherein the energy-storage light-emitting powder comprises, by mass percentage, 15-40% of strontium carbonate, 20-40% of barium meta-aluminate, 30-50% of aluminum oxide, 1.5-2.5% of dysprosium oxide and 1-2% of europium oxide. The preparation method includes: dissolving the polyamide wax into n-butyl alcohol, then mixing with the energy-storage light-emitting powder, performing ball milling and drying to obtain coated energy-storage light-emitting powder, and mixing the coated energy-storage light-emitting powder with the other components to obtain the energy-storage light-emitting coating. The energy-storage light-emitting coating is high in luminance and long in afterglow time after excitation, good in weather resistance and applicable to indoor and outdoor places such as city roads, tunnel walls, human landscapes, underground garages and building outer walls.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an energy storage luminous coating and a preparation method thereof. Background technique [0002] Energy-storage luminescent paint is a kind of light-functional paint, which is different from traditional self-luminous paint and sulfide fluorescent paint. etc. as luminescent hosts, with rare earth elements [europium (Eu), dysprosium (Dy), thulium (Tm), ytterbium (Yb), samarium (Sm), erbium (Er), neodymium (Nd), terbium (Tb), etc.] Made as an activator and co-activator. It can absorb visible light such as sunlight or lights, and store the light energy. When the light excitation stops, it slowly releases the stored energy in the form of light, which lasts for several hours or even ten hours. This functional photoluminescent coating has the advantages of ultra-long afterglow, high luminous brightness, long luminous time, and no radioactivity. Artwork decoration and l...

AI Technical Summary

Problems solved by technology

[0004] However, the energy-storage luminescent material itself is easily hydrolyzed, and the water contained in the coating and the water in contact with the coating during use will cause the performance of the energy-storage luminescent material to decline, or even fail.

The energy-storage luminescent material is an inorganic material, which has poor compatibility with water-based resins, and is easy to agglomerate or settle, making the coating properties uneven

Moreover, the existing energy-storage luminescent coatings mostly use strontium aluminate as a single luminescent substrate, which has limited energy storage and luminescence capabilities.

[0005] In addition, when the energy-storage luminous coating is used in an outdoor environment, it has to go through the hot and cold seasons and the alternation of day and night for a long time. The resulting temperature changes will cause the coating material to continuously expand and contract with heat, causing the internal stress of the coating to increase. Changes, so that the adhesion between the coating and the substrate is reduced, and even damage such as cracking occurs

During the use of energy-storage luminous coatings, they are often affected by pollutants in the air, especially acid rain and alkali rain, and chalking, spots, bubbles, cracks or uneven appearance will occur, and the appearance quality will deteriorate and the luminous brightness will be reduced. decline

Energy storage luminescent coatings are often polluted by sludge and other objects during use. If the adhering sludge is not washed away by rainwater in time, it will affect the light source irradiation and reduce the luminous brightness of the coating.

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