CN108084991A - A kind of method for coating of alkaline earth aluminates phosphors - Google Patents
A kind of method for coating of alkaline earth aluminates phosphors Download PDFInfo
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- CN108084991A CN108084991A CN201810077153.4A CN201810077153A CN108084991A CN 108084991 A CN108084991 A CN 108084991A CN 201810077153 A CN201810077153 A CN 201810077153A CN 108084991 A CN108084991 A CN 108084991A
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- solution
- alkaline earth
- earth aluminates
- phosphors
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- C—CHEMISTRY; METALLURGY
- 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
- 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
- C09K11/08—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
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7792—Aluminates
Abstract
The invention discloses a kind of method for coating of alkaline earth aluminates phosphors, this method comprises the following steps：Silane coupling agent, ethyl alcohol and deionized water are mixed, 40~45 DEG C of 10~15min of water-bath obtain solution 1；Ethylene glycol monomethyl ether, lauryl sodium sulfate are uniformly mixed to obtain solution 2；Solution 2 is added in solution 1, in 60~65 DEG C of 10~15min of water-bath, obtains solution 3；Dispersant, alkaline earth aluminates phosphors and strontium aluminate are added in solution 3, it is 9,5~6h of magnetic agitation to adjust pH, stands 3~4h, filtering, washing, the alkaline earth aluminates phosphors after being coated.Present invention cladding stirs at normal temperatures and pressures, easy to operate simple, is suitble to large-scale production；Alkaline earth aluminates phosphors after present invention cladding have good water resistance, and relatively low oil absorption keeps preferable Characteristics of Long Luminosity, and fluorescence intensity and sunset glow service life with it is almost unchanged before coating.
Description
Technical field
The invention belongs to field of light emitting materials more particularly to a kind of method for coating of alkaline earth aluminates phosphors.
Background technology
Rear-earth-doped aluminate (SrAl2O4：Eu2+, Dy3+) luminescent material compared with traditional sulfide luminescent material,
Have many advantages, such as that luminous efficiency is high, persistence is long, chemical property is stable, "dead".But aluminate luminescent material is in tide
Facile hydrolysis in wet environment makes luminosity and persistence substantially reduce or even lose light-accumulated luminous characteristic, seriously limits
The application of luminescent material is made.By being modified to improve its water resistance to aluminate luminescent material, can solve
The problem of its facile hydrolysis.
Current means mainly pass through SiO2Or Al2O3Coated Deng traditional covering cladding, by macromolecule organic,
Or by modes such as the poly- propionamide claddings of modification, but usually after cladding, luminescent material fluorescence intensity and sunset glow service life can
It is influenced to different extents.
The content of the invention
It is an object of the invention to provide a kind of method for coating of alkaline earth aluminates phosphors, it is intended to solve alkaline earth aluminate
Is there is the problem of sunset glow lost of life, fluorescence intensity reduction in salt luminescent material after being wrapped by.
The present invention is achieved in that a kind of method for coating of alkaline earth aluminates phosphors, and this method includes following step
Suddenly：
(1) by silane coupling agent, ethyl alcohol and deionized water by volume 1:(1~2):(3~5):(6~8) mix, 40
~45 DEG C of 10~15min of water-bath, obtain solution 1；By ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:(5~8) mix
Uniformly obtain solution 2；Solution 2 is added in solution 1, the volume ratio of solution 1 and solution 2 is 2:(1~3), at 60~65 DEG C
10~15min of water-bath obtains solution 3；
(2) dispersant, alkaline earth aluminates phosphors and strontium aluminate are added in solution 3, wherein, solution 3 disperses
Agent, alkaline earth aluminates phosphors, the volume mass ratio of strontium aluminate are 100ml：(1~2) g：(4~6) g：(0.4~0.6) g；
It is 9,5~6h of magnetic agitation to adjust pH, stands 3~4h, filtering, washing, the alkaline earth aluminates phosphors after being coated.
Preferably, in step (1), the silane coupling agent, ethyl alcohol and deionized water by volume 1:2:3:6 is mixed
It closes；The ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:8 mixing.
Preferably, in step (1), the volume ratio of the solution 1 and solution 2 is 2:1.
Preferably, in step (2), the solution 3, dispersant, alkaline earth aluminates phosphors, the volume matter of strontium aluminate
Amount is than being 100ml：1g：5g：0.5g.
Preferably, the alkaline earth aluminates phosphors are rear-earth-doped SrAl2O4:(Eu2+, Dy3+) alkaline earth aluminate
Luminescent material.
Preferably, the dispersant is ligninsulfonate.
For in place of overcome the deficiencies in the prior art, the invention discloses a kind of cladding sides of alkaline earth aluminates phosphors
Method, this method comprise the following steps：Silane coupling agent, ethyl alcohol and deionized water are mixed, 40~45 DEG C of water-baths 10~
15min obtains solution 1；Ethylene glycol monomethyl ether, lauryl sodium sulfate are uniformly mixed to obtain solution 2；Solution 2 is added to molten
In liquid 1, in 60~65 DEG C of 10~15min of water-bath, solution 3 is obtained；Dispersant, alkaline earth aluminate is added in solution 3 to shine material
Material and strontium aluminate, it is 9,5~6h of magnetic agitation to adjust pH, stands 3~4h, filtering, washing, the alkaline earth aluminate after being coated
Salt luminescent material.
Compared with the prior art the shortcomings that and deficiency, the invention has the advantages that：
(1) present invention cladding stirs at normal temperatures and pressures, easy to operate simple, is suitble to large-scale production；
(2) alkaline earth aluminates phosphors after present invention cladding have good water resistance, and relatively low oil absorption is protected
Hold preferable Characteristics of Long Luminosity, and fluorescence intensity and sunset glow service life with it is almost unchanged before coating.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
(1) by silane coupling agent, ethyl alcohol and deionized water by volume 1:1:3:6 mixing, 40 DEG C of water-bath 15min are obtained
To solution 1；By ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:5 be uniformly mixed obtain solution 2；Solution 2 is added to
In solution 1, the volume ratio of solution 1 and solution 2 is 2:1, in 60 DEG C of water-bath 10min, obtain solution 3；
(2) dispersant, alkaline earth aluminates phosphors and strontium aluminate are added in solution 3, wherein, solution 3, wooden sulphur
Hydrochlorate, rear-earth-doped SrAl2O4:(Eu2+, Dy3+) alkaline earth aluminates phosphors, strontium aluminate volume mass ratio be 100ml：
1g：4g：0.4g；It is 9, magnetic agitation 5h to adjust pH, stands 3h, filtering, washing, and the alkaline earth aluminate after being coated shines material
Material 1.
IR, SEM and TEM test result show that the organic coating layer is made of silane-modified polymethyl methacrylate,
It is the fine and close reticular membrane that a kind of thickness is 10~20nm.Water resistance, oil absorption and Characteristics of Long Luminosity test result show
Organic coating treated luminescent powder has good water resistance, relatively low oil absorption, at the same still keep it is preferable it is long more than
The brightness characteristics of luminescence, fluorescence intensity and sunset glow service life respectively may be about 99.2% and 99.5% before coating.
Embodiment 2
(1) by silane coupling agent, ethyl alcohol and deionized water by volume 1:2:5:8 mixing, 45 DEG C of water-bath 15min are obtained
To solution 1；By ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:8 be uniformly mixed obtain solution 2；Solution 2 is added to
In solution 1, the volume ratio of solution 1 and solution 2 is 2:3, in 65 DEG C of water-bath 15min, obtain solution 3；
(2) dispersant, alkaline earth aluminates phosphors and strontium aluminate are added in solution 3, wherein, solution 3, wooden sulphur
Hydrochlorate, rear-earth-doped SrAl2O4:(Eu2+, Dy3+) alkaline earth aluminates phosphors, strontium aluminate volume mass ratio be 100ml：
2g：6g：0.6g；It is 9, magnetic agitation 6h to adjust pH, stands 4h, filtering, washing, and the alkaline earth aluminate after being coated shines material
Material 2.
IR, SEM and TEM test result show that the organic coating layer is made of silane-modified polymethyl methacrylate,
It is the fine and close reticular membrane that a kind of thickness is 10~20nm.Water resistance, oil absorption and Characteristics of Long Luminosity test result show
Organic coating treated luminescent powder has good water resistance, relatively low oil absorption, at the same still keep it is preferable it is long more than
The brightness characteristics of luminescence, fluorescence intensity and sunset glow service life respectively may be about 99.6% and 99.7% before coating.
Embodiment 3
(1) by silane coupling agent, ethyl alcohol and deionized water by volume 1:2:3:6 mixing, 45 DEG C of water-bath 15min are obtained
To solution 1；By ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:8 be uniformly mixed obtain solution 2；Solution 2 is added to
In solution 1, the volume ratio of solution 1 and solution 2 is 2:1, in 65 DEG C of water-bath 15min, obtain solution 3；
(2) dispersant, alkaline earth aluminates phosphors and strontium aluminate are added in solution 3, wherein, solution 3, wooden sulphur
Hydrochlorate, rear-earth-doped SrAl2O4:(Eu2+, Dy3+) alkaline earth aluminates phosphors, strontium aluminate volume mass ratio be 100ml：
1g：5g：0.5g；It is 9, magnetic agitation 6h to adjust pH, stands 4h, filtering, washing, and the alkaline earth aluminate after being coated shines material
Material 3.
IR, SEM and TEM test result show that the organic coating layer is made of silane-modified polymethyl methacrylate,
It is the fine and close reticular membrane that a kind of thickness is 10~20nm.Water resistance, oil absorption and Characteristics of Long Luminosity test result show
Organic coating treated luminescent powder has good water resistance, relatively low oil absorption, at the same still keep it is preferable it is long more than
The brightness characteristics of luminescence, fluorescence intensity and sunset glow service life respectively may be about 99.8% and 99.9% before coating.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of method for coating of alkaline earth aluminates phosphors, which is characterized in that this method comprises the following steps：
(1) by silane coupling agent, ethyl alcohol and deionized water by volume 1:(1~2):(3~5):(6~8) mix, 40~45
DEG C 10~15min of water-bath, obtains solution 1；By ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:(5~8) it is uniformly mixed
Obtain solution 2；Solution 2 is added in solution 1, the volume ratio of solution 1 and solution 2 is 2:(1~3), in 60~65 DEG C of water-baths
10~15min obtains solution 3；
(2) dispersant, alkaline earth aluminates phosphors and strontium aluminate are added in solution 3, wherein, solution 3, dispersant, alkali
Native aluminate luminescent material, the volume mass ratio of strontium aluminate are 100ml：(1~2) g：(4~6) g：(0.4~0.6) g；Adjust pH
For 9,5~6h of magnetic agitation, 3~4h, filtering, washing, the alkaline earth aluminates phosphors after being coated are stood.
2. the method for coating of alkaline earth aluminates phosphors as described in claim 1, which is characterized in that in step (1), institute
State silane coupling agent, ethyl alcohol and deionized water by volume 1:2:3:6 mixing；
The ethylene glycol monomethyl ether, lauryl sodium sulfate by volume 1:8 mixing.
3. the method for coating of alkaline earth aluminates phosphors as claimed in claim 2, which is characterized in that in step (1), institute
The volume ratio for stating solution 1 and solution 2 is 2:1.
4. the method for coating of alkaline earth aluminates phosphors as claimed in claim 3, which is characterized in that in step (2), institute
It is 100ml to state solution 3, dispersant, alkaline earth aluminates phosphors, the volume mass ratio of strontium aluminate：1g：5g：0.5g.
5. the method for coating of alkaline earth aluminates phosphors as claimed in claim 4, which is characterized in that the alkaline earth aluminate
Luminescent material is rear-earth-doped SrAl2O4:(Eu2+, Dy3+) alkaline earth aluminates phosphors.
6. the method for coating of alkaline earth aluminates phosphors as claimed in claim 5, which is characterized in that the dispersant is wood
Matter sulfonate.
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| CN201810077153.4A CN108084991A (en) | 2018-01-26 | 2018-01-26 | A kind of method for coating of alkaline earth aluminates phosphors |
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| CN201810077153.4A CN108084991A (en) | 2018-01-26 | 2018-01-26 | A kind of method for coating of alkaline earth aluminates phosphors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116622275A (en) * | 2023-04-13 | 2023-08-22 | 广东省科学院产业技术育成中心 | Color long-afterglow luminous powder coating and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238094A (en) * | 2015-07-27 | 2016-01-13 | 李海玉 | Red-light blue azo disperse dye with high color development strength and preparation method therefor |
-
2018
- 2018-01-26 CN CN201810077153.4A patent/CN108084991A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238094A (en) * | 2015-07-27 | 2016-01-13 | 李海玉 | Red-light blue azo disperse dye with high color development strength and preparation method therefor |
Non-Patent Citations (1)
| Title |
|---|
| 吕兴栋等: "碱土铝酸盐长余辉发光材料的有机包覆及其表征", 《应用化学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116622275A (en) * | 2023-04-13 | 2023-08-22 | 广东省科学院产业技术育成中心 | Color long-afterglow luminous powder coating and preparation method thereof |
| CN116622275B (en) * | 2023-04-13 | 2024-02-23 | 广东省科学院产业技术育成中心 | Color long-afterglow luminous powder coating and preparation method thereof |
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