CN113817458A - Photoinduced energy storage luminescent powder coated with protective material and preparation method thereof - Google Patents
Photoinduced energy storage luminescent powder coated with protective material and preparation method thereof Download PDFInfo
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- CN113817458A CN113817458A CN202111058617.5A CN202111058617A CN113817458A CN 113817458 A CN113817458 A CN 113817458A CN 202111058617 A CN202111058617 A CN 202111058617A CN 113817458 A CN113817458 A CN 113817458A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
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- C—CHEMISTRY; METALLURGY
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7774—Aluminates
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Abstract
The invention discloses a photoinduced energy storage luminescent powder coated with a protective material and a preparation method thereof.
Description
Technical Field
The invention belongs to the field of luminescent powder, and particularly relates to a protective material-coated photoinduced energy storage luminescent powder and a preparation method thereof.
Background
SrAl2O4:Eu2+,Dy3+ is the rare earth long afterglow luminescent material with the most excellent luminescent performance at present, has the advantages of high quantum efficiency, wide excitation bandwidth, long afterglow time, stable chemical property, no radioactivity and the like, has wide application in coating, textiles, glass and plastics, and becomes a research hotspot in the fields of materials, biology, energy, safety protection and the like. But the material has poor water resistance and generates oxidation when being rubbed with a metal material, is very easy to generate hydrolysis reaction when being exposed in humid air or being contacted with water for a long time, generates a large amount of OH < - > to cause the pH value of a system to rise, and damages the crystal structure of the material while influencing the acid-base balance of the system, thereby seriously influencing the afterglow brightness of the luminous performance; meanwhile, the energy storage luminescent material is easy to rub with a metal screw or a metal stirring paddle in the extrusion processing or dispersion process to generate oxidation, so that secondary processing and application in complex environment are limited.Researchers have proposed various methods of surface modification treatment to solve the problem of poor water resistance and oxidation due to friction with metal, and isolation of water molecules by coating the surface with a protective substance is the most common and effective strategy. The traditional coating mode is CaF coating2Adding energy-storing luminescent powder in CaF2After the solution is dispersed and coated, the solution is filtered, dried, dispersed and crushed, the particle size of the coated material obtained by the method is not uniform, and the coated material is easy to damage in secondary crushing, so that the coating is incomplete.
Disclosure of Invention
In order to solve the problems, the invention discloses a photoinduced energy storage luminescent powder coated with a protective material and a preparation method thereof. According to the invention, the energy storage luminescent powder is firstly screened to obtain the energy storage luminescent powder with the required particle size, then a waterproof layer is coated by the processes of ultrasound, stirring and the like, and finally the required material is obtained by adopting suction filtration and spray drying. Spray drying is a method for applying systematic technology to material drying. After the thin material is atomized in the drying chamber, the thin material is contacted with hot air, and the moisture is quickly vaporized, so that the dried product is obtained. The method can directly dry the solution or emulsion into powder or granular product, and can omit the procedures of evaporation, pulverization, etc. Its advantage does: 1. the drying process is very rapid. 2. Can be directly dried into powder.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation method of the photoinduced energy storage luminescent powder coated with the protective material comprises the following steps:
step one, energy storage luminescent powder treatment: crushing and screening the fired energy storage luminescent material to obtain energy storage luminescent powder, and then treating the energy storage luminescent powder with a coupling agent to obtain energy storage luminescent powder treated by the coupling agent;
step two, preparing a protective material: dissolving protective resin, film forming additive and dispersant in water to prepare a protective material;
and step three, adding the energy storage luminescent powder treated by the coupling agent into the protective material for soaking, performing ultrasonic dispersion and uniform stirring, performing suction filtration for solid-liquid separation after stirring is completed, and performing spray drying treatment on the separated solid to obtain the photoinduced energy storage luminescent powder coated with the protective material.
In the step one, the energy storage luminescent powder with 200-400 meshes is obtained by screening.
In a further improvement, in the first step, the coupling agent treatment step is: and soaking the energy-storage luminescent powder in a silane coupling agent with the mass concentration of 5-10% for 30-60 minutes, stirring and soaking, and then stirring and filtering to obtain the energy-storage luminescent powder treated by the coupling agent.
In the second step, the mass concentration of the protective resin in the protective material is 20-40%, the mass concentration of the film-forming aid is 3-15%, the mass concentration of the dispersant is 1-3%, and the balance is water.
In a further improvement, the protective resin is silicone-acrylate emulsion, the film-forming aid is dodecyl alcohol ester, and the dispersant is 5040 dispersant.
In a further improvement, in the third step, stirring is carried out for 30min under the condition of 200 r/min.
In the third step, the coating thickness of the protective material on the energy storage luminescent powder is 0.5-1 μm.
The preparation method of the protective material-coated photoinduced energy storage luminescent powder is used for preparing the protective material-coated photoinduced energy storage luminescent powder.
The invention has the advantages that:
according to the invention, the energy storage luminescent powder is firstly screened to obtain the energy storage luminescent powder with the required particle size, then a waterproof layer is coated by the technologies of ultrasound, stirring and the like, and finally the required material is obtained by adopting suction filtration and spray drying.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1
The invention provides a preparation method of photoinduced energy storage luminescent powder coated with protective materials, which comprises the following steps:
(1) energy storage luminescent powder treatment: screening the energy storage luminescent powder to obtain 200-mesh powder, soaking the powder for 30 minutes by using 5% of silane coupling agent, and stirring and filtering the powder to obtain the energy storage luminescent powder treated by the coupling agent.
(2) And (3) preparing a protective material: dissolving protective resin, film forming additive, dispersant and the like in water to prepare solution; the protective resin is silicone-acrylate emulsion with the final concentration of 200%, the film-forming assistant is dodecyl alcohol ester with the final concentration of 3%, the dispersing agent is 5040 dispersing agent with the final concentration of 1%, and the balance is water.
(3) And coating the surface with a material, adding the energy storage luminescent powder after being treated by the coupling agent into the prepared protective material, performing ultrasonic dispersion, stirring for 30min under the condition of 200r/min to enable the energy storage luminescent powder to be completely soaked in the protective material, separating solid from liquid by adopting a suction filtration mode, and performing spray drying to obtain the energy storage luminescent powder coated with the protective material.
The coating thickness of the protective material on the energy storage luminescent powder is 0.5 μm. The energy-storing luminous powder coated by the method has uniform diameter and 95 percent of uniformity, the surface coating material is complete, the protective property is good, and the energy-storing luminous powder can be stored for a long time together with the waterborne styrene-acrylic coating and can be packaged by a metal packaging container.
Example 2
The invention provides a preparation method of photoinduced energy storage luminescent powder coated with protective materials, which comprises the following steps:
(1) energy storage luminescent powder treatment: screening the energy storage luminescent powder to obtain 400-mesh powder, soaking the powder for 30 minutes by using 10% of silane coupling agent, and stirring and filtering the powder to obtain the energy storage luminescent powder treated by the coupling agent.
(2) And (3) preparing a protective material: dissolving protective resin, film forming additive, dispersant and the like in water to prepare solution; the protective resin is silicone-acrylate emulsion with the final concentration of 40%, the film-forming assistant is dodecyl alcohol ester with the final concentration of 15%, the dispersing agent is 5040 dispersing agent with the final concentration of 3%, and the balance is water.
(3) And coating the surface with a material, adding the energy storage luminescent powder which is processed by the coupling agent into the prepared protective material, performing ultrasonic dispersion, stirring for 600min under the condition of 200r/min to enable the energy storage luminescent powder to be completely soaked with the protective material, separating solid from liquid by adopting a suction filtration mode, and drying the energy storage luminescent powder coated with the protective material by adopting a spray drying mode.
The coating thickness of the protective material on the energy storage luminescent powder is 1 μm. The energy storage luminous powder coated by the method has uniform diameter and 96 percent of uniformity, the surface coating material is complete and has good protection, and the energy storage luminous powder coated by the method can be stored with the waterborne silicone-acrylate coating for a long time and can be packaged by a metal packaging container.
Example 3
The invention provides a preparation method of photoinduced energy storage luminescent powder coated with protective materials, which comprises the following steps:
(1) energy storage luminescent powder treatment: screening the energy storage luminescent powder to obtain 300-mesh powder, soaking the powder for 45 minutes by using 8% of silane coupling agent, and stirring and filtering the powder to obtain the energy storage luminescent powder treated by the coupling agent.
(2) And (3) preparing a protective material: dissolving protective resin, film forming additive, dispersant and the like in water to prepare solution; the protective resin is silicone-acrylate emulsion with the final concentration of 30%, the film-forming assistant is dodecyl alcohol ester with the final concentration of 10%, the dispersing agent is 5040 dispersing agent with the final concentration of 2%, and the balance is water.
(3) And coating the surface with a material, adding the energy storage luminescent powder which is processed by the coupling agent into the prepared protective material, performing ultrasonic dispersion, stirring for 600min under the condition of 200r/min to enable the energy storage luminescent powder to be completely soaked with the protective material, separating solid from liquid by adopting a suction filtration mode, and drying the energy storage luminescent powder coated with the protective material by adopting a spray drying mode.
The coating thickness of the protective material on the energy storage luminescent powder is 0.8 μm. The energy storage luminous powder particles coated by the method have uniform diameter and 97 percent of uniformity, the surface coating material is complete, the protective property is good, and the energy storage luminous powder particles and the water-based fluorocarbon coating can be stored for a long time and can be packaged by a metal packaging container.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described without departing from the generic concept as defined by the claims and the equivalents thereof.
Claims (8)
1. A preparation method of the photoinduced energy storage luminescent powder coated with the protective material is characterized by comprising the following steps:
step one, energy storage luminescent powder treatment: crushing and screening the fired energy storage luminescent material to obtain energy storage luminescent powder, and then treating the energy storage luminescent powder with a coupling agent to obtain energy storage luminescent powder treated by the coupling agent;
step two, preparing a protective material: dissolving protective resin, film forming additive and dispersant in water to prepare a protective material;
and step three, adding the energy storage luminescent powder treated by the coupling agent into the protective material for soaking, performing ultrasonic dispersion and uniform stirring, performing suction filtration for solid-liquid separation after stirring is completed, and performing spray drying treatment on the separated solid to obtain the photoinduced energy storage luminescent powder coated with the protective material.
2. The method as claimed in claim 1, wherein in the step one, the energy-storing phosphor of 200-400 mesh is obtained by sieving.
3. The method for preparing the protective material coated photoluminescent powder of claim 1, wherein in the first step, the coupling agent treatment step comprises: and soaking the energy-storage luminescent powder in a silane coupling agent with the mass concentration of 5-10% for 30-60 minutes, stirring and soaking, and then stirring and filtering to obtain the energy-storage luminescent powder treated by the coupling agent.
4. The method for preparing the protective material coated photoluminescent energy storage and luminescent powder as claimed in claim 1, wherein in the second step, the protective resin in the protective material has a mass concentration of 20-40%, the film-forming aid has a mass concentration of 3-15%, the dispersant has a mass concentration of 1-3%, and the balance is water.
5. The method for preparing the protective material coated photoluminescent energy storage and luminescent powder of claim 4, wherein the protective resin is a silicone-acrylic emulsion, the film-forming aid is dodecanol ester, and the dispersant is a 5040 dispersant.
6. The method for preparing the protective material coated photoluminescent energy storage and luminescent powder of claim 1, wherein in the third step, the mixture is stirred for 30min to 60min at a speed of 200 r/min.
7. The method for preparing the protective material coated photoluminescent powder of claim 1 or 6, wherein in the third step, the coating thickness of the protective material on the energy-storing luminescent powder is 0.5-1 μm.
8. The protective material-coated photo-induced energy storage luminescent powder prepared by the preparation method of the protective material-coated photo-induced energy storage luminescent powder disclosed by any one of claims 1 to 7.
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Citations (5)
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| CN1861743A (en) * | 2006-06-09 | 2006-11-15 | 江西财经大学 | Surface organic film coating process of long afterglow luminescent powder of alkaline earth aluminate |
| CN101307225A (en) * | 2008-07-11 | 2008-11-19 | 广州有色金属研究院 | Process for preventing superfine rare-earth light-storage and luminescent material for water color ink form hydrolyzing |
| CN108841375A (en) * | 2018-05-31 | 2018-11-20 | 陕西科技大学 | A method of improving aluminate long after glow luminous material luminescent properties |
| CN108865130A (en) * | 2018-05-21 | 2018-11-23 | 湖南大学 | A kind of rare earth long afterglow luminescent powder body and preparation method thereof, water-based energy storage type long afterglow luminous paint and preparation method thereof |
| JP2020172592A (en) * | 2019-04-11 | 2020-10-22 | 東レ株式会社 | Luminous pigment-containing polymer fine particle and method for producing the same |
-
2021
- 2021-09-10 CN CN202111058617.5A patent/CN113817458A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1861743A (en) * | 2006-06-09 | 2006-11-15 | 江西财经大学 | Surface organic film coating process of long afterglow luminescent powder of alkaline earth aluminate |
| CN101307225A (en) * | 2008-07-11 | 2008-11-19 | 广州有色金属研究院 | Process for preventing superfine rare-earth light-storage and luminescent material for water color ink form hydrolyzing |
| CN108865130A (en) * | 2018-05-21 | 2018-11-23 | 湖南大学 | A kind of rare earth long afterglow luminescent powder body and preparation method thereof, water-based energy storage type long afterglow luminous paint and preparation method thereof |
| CN108841375A (en) * | 2018-05-31 | 2018-11-20 | 陕西科技大学 | A method of improving aluminate long after glow luminous material luminescent properties |
| JP2020172592A (en) * | 2019-04-11 | 2020-10-22 | 東レ株式会社 | Luminous pigment-containing polymer fine particle and method for producing the same |
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