CN111234806B - Aluminate long afterglow material, coating paint and preparation method thereof - Google Patents
Aluminate long afterglow material, coating paint and preparation method thereof Download PDFInfo
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/22—Luminous paints
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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
- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
- C09K11/641—Chalcogenides
- C09K11/643—Chalcogenides with alkaline earth metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides an aluminate long afterglow material, a coating and a preparation method thereof, wherein the preparation method of the aluminate long afterglow material comprises the following steps: 1. weighing tetraethoxysilane, absolute ethyl alcohol and deionized water according to the weight portion ratio, and fully mixing; 2. heating the mixed solution to above 50deg.C, and regulating the solution to alkalinity with sodium hydroxide for 30min; 3. raising the temperature of the mixed solution to above 70 ℃, and continuing to react until the mixed solution is changed from transparent to milky white and the Tyndall effect appears; 4. adding aluminate long afterglow materials into the mixture, stirring and dispersing the mixture; 5. sealing the stirred and dispersed long afterglow material mixture, and standing and aging for more than 2 hours at normal temperature; 6. placing the aged material into a high-low temperature alternating damp-heat box, and performing heat treatment for more than 1h under the conditions of 60-90 ℃ and 60-90% RH humidity, wherein the heating rate is 1 ℃/min; 7. and taking out the treated material, and drying at normal temperature to obtain the silicon dioxide coated long afterglow material.
Description
Technical Field
The invention relates to the technical field of afterglow materials, in particular to an aluminate long afterglow material, a coating and a preparation method thereof.
Background
Long persistence materials are a class of substances that absorb energy and continue to emit light after excitation ceases. Yellow green strontium aluminate long afterglow material SrAl 2 O 4 :Eu 2+ ,Dy 3+ The fluorescent powder has high brightness, stable luminous effect and long afterglow time, and is widely applied to the field of long afterglow paint. With the continuous development of the coating industry, better environment-friendly water-based coatings gradually become the dominant force of the building coating market. The high requirement is also provided for the strontium aluminate long afterglow material, especially the strontium aluminate long afterglow material reacts with water to generate aluminum hydroxide and the like to raise the pH value of the aluminum hydroxide, destroy the main crystal lattice of the strontium aluminate material and lead the strontium aluminate long afterglow material to lose the long afterglow characteristic. This fatal problem becomes the waterborne of the strontium aluminate long afterglow coatingSerious obstructions on the road. Thus, the aluminate long afterglow material must be modified to ensure its stability in the aqueous coating.
Aiming at the problem of poor water resistance of the strontium aluminate long afterglow material, a great deal of researches are also carried out, and remarkable effect is obtained. The current water-resistant treatment of the strontium aluminate long afterglow material is mainly realized by a coating means. The silica film prepared by the sol-gel method has little influence on the light absorption and the light emission of strontium aluminate, and is a more common coating means. However, in the existing method for preparing the silicon dioxide film by using the sol-gel method, one of the important problems is that the outer layer of the protective film is dried in advance, the fluidity is reduced, the inside is not completely dried, and the solvent is volatilized continuously, so that the silicon dioxide coating layer is cracked and finally cannot be used. And the existing treatment method for the silicon dioxide film cracking mostly has the problems of expensive equipment and high energy consumption. Therefore, how to overcome the defects existing in the preparation of the silicon dioxide coating layer by a sol-gel method and obtain a better water-resistant preparation method of the strontium aluminate long afterglow material is a problem to be solved in the industry.
Disclosure of Invention
In order to solve the defects that a sol-gel silicon dioxide coating layer of the aluminate long afterglow material is easy to crack and finally cannot be used in the gel or drying process in the prior art. The invention provides a preparation method of a silicon dioxide coating layer, which can improve the film yield of the silicon dioxide coating layer in the gel drying process.
The invention provides a preparation method of aluminate long afterglow material, comprising the following steps:
weighing 10-50 parts of ethyl orthosilicate, 0-60 parts of absolute ethyl alcohol and 0-60 parts of deionized water according to the weight parts, and fully mixing the above components;
step two, heating the mixed solution to more than 50 ℃, and regulating the solution to be alkaline by sodium hydroxide for 30min;
step three, the temperature of the mixed solution is increased to be more than 70 ℃, and the reaction is continued until the mixed solution is changed from transparent to milky white and the Tyndall effect appears;
adding the aluminate long afterglow material into the mixture, and stirring and dispersing the mixture;
sealing the stirred and dispersed long afterglow material mixture, and standing and aging for more than 2 hours at normal temperature;
step six, placing the aged material into a high-low temperature alternating damp-heat box, and performing heat treatment for more than 1h under the conditions of 60-90 ℃ and 60-90% RH humidity, wherein the heating rate is about 1 ℃/min;
and step seven, taking out the treated material, and drying at normal temperature to obtain the required long afterglow material coated with silicon dioxide.
The invention also provides an aluminate long afterglow material which is prepared by the preparation method.
The invention also provides a coating, which comprises the aqueous long afterglow coating
The aqueous long afterglow coating comprises the following components in parts by mass: 30 to 60 parts of silicone-acrylic emulsion, 5 to 25 parts of aluminate long afterglow material, 0.1 to 1.5 parts of defoamer, 0.5 to 2.0 parts of flatting agent, 0.2 to 2.0 parts of wetting dispersant, 0.2 to 1.5 parts of thickener, 0.2 to 2.0 parts of film forming auxiliary agent, 0 to 30 parts of filler and 15 to 30 parts of deionized water; the aluminate long afterglow material is prepared according to the preparation method.
Further, the aluminum paste reflective coating also comprises an aqueous aluminum paste reflective coating:
the water-based aluminum paste reflective coating comprises the following components in parts by weight: 30 to 60 parts of silicone-acrylic emulsion, 5 to 25 parts of aluminum paste, 0.1 to 1.5 parts of defoamer, 0.5 to 2.0 parts of flatting agent, 0.2 to 2.0 parts of aluminum paste directional dispersant, 0.2 to 1.5 parts of thickener, 0.2 to 2.0 parts of film forming additive, 0 to 30 parts of filler and 5 to 30 parts of deionized water.
Further, the defoamer is a mixture of mineral oil and wax or a mixture of mineral oil containing hydrophobic particles.
Further, the leveling agent is polyether polyurethane.
Further, the wetting dispersant is an aqueous dispersant.
Further, the thickener is a nonionic water-soluble cellulose ether of high viscosity grade.
Further, the aluminum paste is an aqueous non-floating aluminum paste.
Further, the filler is at least one of light calcium carbonate, kaolin, titanium pigment and talcum powder.
The invention also provides a preparation method of the coating paint, which comprises the following steps:
step one, preparation of aqueous long afterglow coating
Adding the defoaming agent and the wetting dispersant into deionized water according to the proportion, and dispersing uniformly at a high speed; adding silicone-acrylic emulsion at reduced rotation speed, and continuing dispersing; then adding aluminate long afterglow material, adding leveling agent and film forming additive, dispersing for a certain time, adding thickener, continuing dispersing, and finishing after uniformity to obtain water-based long afterglow paint;
step two, preparation of water-based aluminum paste reflective coating
Adding a defoaming agent and an aluminum silver paste directional dispersing agent into deionized water according to a proportion, and dispersing uniformly at a high speed; simultaneously, taking aluminum silver paste and deionized water for ultrasonic dispersion and dilution; adding the silicone-acrylic emulsion to continuously disperse after reducing the rotating speed; then adding the well-diluted aluminum silver paste, simultaneously adding a leveling agent and a film-forming auxiliary agent, dispersing for a certain time, adding a thickening agent, continuing dispersing, and finishing after uniformity to obtain the water-based aluminum silver paste luminescent coating.
Compared with the prior art, the invention has the following characteristics:
(1) The water-resistant preparation method of the aluminate long afterglow material prepares a silicon dioxide coating layer by a sol-gel method, and the silicon dioxide coating layer has hydrophobicity and improves the water resistance of the aluminate long afterglow material. The sol-gel method adopts tetraethoxysilane as a silicon source and sodium hydroxide solution as a catalyst. The ethyl orthosilicate is used as a silicon source, the reaction condition is mild, and the reaction products are relatively less in favor of post-treatment. The problem of volatilization of ammonia water under the high temperature condition can be well solved by using sodium hydroxide to replace ammonia water as a catalyst. The sol-gel method adopts a special process, namely, the coating product is subjected to sealing aging treatment and then is subjected to heat treatment immediately after the aging treatment, the reaction product is subjected to high-temperature and high-humidity condition, the high temperature can accelerate the thermal movement of molecules, the substances such as redundant products and solvents generated by crosslinking gel and the like in the coating layer can accelerate the escape of the substances through the coating layer, and the external high-humidity condition can also slow down the drying and curing speed of the outer layer of the coating layer, so that the two substances in the coating layer are comprehensively beneficial to be discharged and the integrity of the coating layer cannot be greatly influenced. The special process can relatively unify the drying and curing of the whole coating layer, and effectively prevent the cracking problem of the coating layer caused by slow drying and curing of the inner layer. The preparation method provided by the invention simplifies the coating process of the long afterglow material.
(2) Aiming at the problems that the existing long-afterglow coating is complete in color spectrum, bright and pure in color light and strong in tinting strength, but the long-afterglow coating of a plurality of types is poor in light resistance, weather resistance and chemical stability due to film forming resin and the like, and particularly when the long-afterglow coating is used in outdoor places, the luminous effect is deteriorated and the coating is easy to crack after being subjected to sun and rain. The refractive index of the silicon acrylic emulsion is close to that of the aluminate long afterglow material, the silicon acrylic emulsion is adopted as a film forming substance, the influence of the film forming substance on the afterglow time and afterglow strength of the long afterglow coating can be reduced to a great extent, and the silicon acrylic emulsion has excellent performances such as weather resistance, water resistance and the like and is suitable for being applied to water-based building coatings.
(3) The traditional long afterglow coating only utilizes the light emitted from the long afterglow material to the visible surface of the coating, has low light utilization rate, and does not fully consider the utilization of the light emitted to the bottom of the coating. However, in order to ensure the afterglow time and afterglow brightness of the long afterglow coating, the addition amount of the long afterglow material in the whole coating formulation needs to be kept at a high level, so that the cost is increased and a certain degree of waste is generated for the long afterglow material. According to the invention, the bottom of the long afterglow coating is coated with the aluminum paste reflective intermediate layer to reflect light emitted to the bottom of the coating back again, so that the light utilization rate in the coating is improved. Thus, the consumption of the long afterglow material can be reduced on the premise of not affecting the afterglow effect. The aluminum silver paste can well reflect the yellow-green light emitted by the aluminate long afterglow material, and meanwhile, the flaky structure of the aluminum silver powder also plays a good role in shielding and blocking, so that the water resistance, alkali resistance and other performances of the coating can be greatly improved while the light is reflected, and the cracking problem of the coating can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a scanning electron microscope picture of a long afterglow coated modified material prepared in example 1 of the present invention;
FIG. 2 is a scanning electron microscope image of a long afterglow coated modified material of comparative example 2, which was not subjected to high temperature and high humidity heat treatment, provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The reagents used in the invention are described as follows:
the defoamer may preferably be one or more of DAPRO 7072, DAPRO 7010, DAPRO DF675, defom W-086, and Defom W-082 from Haimaos.
The leveling agent may preferably be one or more of DeuRheo WT-105A, RHEOLATE 212, RHEOLATE CVS-15 from Haimas.
The wetting dispersant may preferably be one or more selected from NUOSPERSE FN211, dispenx W-18, dispex AA4140AS, level W-469 from Haimas corporation.
The thickener is preferably one or more selected from Bermocoll EBS 351, FQ, bermocoll EBS 451, FQ and Bermocoll EBS 481, FQ of Account.
The film forming aid is preferably one or more selected from Loxanol CA 5308, loxanol CA 5320 and Loxanol CA 5330 of Basoff company.
The aluminum paste is preferably one or more of 2035A, 3304HB, 5510B, and 3302B from Manterbo.
The aluminum paste orientation powder can be preferably one or more selected from BENTONE DY CE, BENTONE GS, BENTONE DE, BENTONE LT of Haimasch company.
The filler is common filler in the market, such as light calcium carbonate, kaolin, titanium pigment, talcum powder and the like.
It should be noted that, in the examples, specific techniques or conditions are not noted, and the reagents or apparatuses used, which are carried out according to techniques or conditions described in the literature in the field or according to the specifications of the products, are conventional products commercially available, and are not noted to manufacturers.
Example 1
A modified strontium aluminate long afterglow material, its preparation method is as follows:
20g of ethyl orthosilicate, 90g of absolute ethyl alcohol and 40g of deionized water are taken. Adding tetraethoxysilane and absolute ethyl alcohol into a three-neck flask, sealing and stirring at a constant speed, adding deionized water into the flask after 5min, continuously stirring for 5min, and heating to 60 ℃. Regulating the pH value of the mixed solution to 10 by using sodium hydroxide solution, continuously stirring at 60 ℃ for 30min, and then heating to 85 ℃ for continuous heating reaction. And after the mixed solution turns from colorless to milky white and the Tyndall effect is generated, opening a bottle stopper of the three-neck flask to continue the reaction for 10min. Then 400g of strontium aluminate long afterglow material was added to stop heating and stirring was continued for 30min. And (5) sealing the obtained product and aging for 4 hours at normal temperature. After 4 hours, the product is transferred to a high-low temperature exchange wet heat box to be heated to 70 ℃, the heating rate is 1 ℃/min, and the heat treatment is carried out for 2 hours under the condition of 80% humidity. And drying the obtained material at normal temperature after treatment to obtain the silicon dioxide coated modified strontium aluminate long afterglow material.
Comparative example 1
The preparation method of the modified strontium aluminate long afterglow material is the same as that of the example 1 except that high-temperature and high-humidity heat treatment is not carried out.
The invention performs apparent characteristic observation on the modified strontium aluminate long afterglow materials obtained in the example 1 and the comparative example 1 through a scanning electron microscope image. By observation, the silica coating of fig. 1 was intact and not cracked, and the silica coating of fig. 2 was cracked. The invention proves that the drying and curing of the whole coating layer can be relatively uniform by adopting a special process, and the cracking problem of the coating layer caused by slow drying and curing of the inner layer can be effectively prevented.
Example 2
A preparation method of the aqueous silicon-acrylic long afterglow coating comprises the following steps:
2g of defoamer, 4g of wetting dispersant and 40g of filler are added into 70g of deionized water to be dispersed for 20min at high speed. And (5) adding 100g of silicone-acrylic emulsion to continuously disperse for 20min after the rotation speed is reduced. Then adding 20g of the long-afterglow coating modified material prepared in the example 1, simultaneously adding 3g of a leveling agent and 2g of a film-forming auxiliary agent, dispersing for 10min, adding 0.8g of a thickening agent, and continuing dispersing for 20min to obtain the aqueous silicon-acrylic long-afterglow coating.
Example 3
A preparation method of the aqueous silicon-acrylic long afterglow coating comprises the following steps:
2.4g of defoamer, 3.5g of wetting dispersant, 20g of filler and 45g of deionized water are added for high-speed dispersion for 20min. And (3) adding 120g of silicone-acrylic emulsion to continuously disperse for 20min after the rotation speed is reduced. Then 25g of the long afterglow coating modified material prepared in the example 1 is added, 2.8g of a leveling agent and 2.4g of a film forming auxiliary agent are added, after 10min of dispersion, 1g of a thickening agent is added, and the aqueous silicon-acrylic long afterglow coating is obtained after 20min of continuous dispersion.
Example 4
A preparation method of the aqueous silicon-acrylic long afterglow coating comprises the following steps:
2.2g of defoamer and 3.8g of wetting dispersant are added into 50g of deionized water for high-speed dispersion for 20min. And (3) adding 120g of silicone-acrylic emulsion to continuously disperse for 20min after the rotation speed is reduced. Then adding 20g of the long-afterglow coating modified material prepared in the example 1, simultaneously adding 3g of a leveling agent and 2g of a film-forming auxiliary agent, dispersing for 10min, adding 1.2g of a thickening agent, and continuing dispersing for 20min to obtain the aqueous silicon-acrylic long-afterglow coating.
Example 5
A preparation method of the water-based aluminum paste reflective coating comprises the following steps:
1.8g of defoamer, 4g of aluminum silver paste directional dispersant, 10g of filler and 30g of deionized water are added for high-speed dispersion for 20min. Simultaneously taking 20g of aluminum silver paste and 20g of deionized water for ultrasonic dispersion and dilution for 20min. And (3) adding 120g of silicone-acrylic emulsion to continuously disperse for 20min after the rotation speed is reduced. Then adding the well-diluted aluminum silver paste, simultaneously adding 3.6g of flatting agent, 2g of film forming auxiliary agent, dispersing for 10min, adding 0.6g of thickening agent, and continuing dispersing for 20min to obtain the water-based aluminum silver paste luminescent paint.
Coating the aqueous silicon-acrylic long afterglow paint obtained in the examples 2-4 on a coating plate, and performing afterglow effect test; in addition, the invention also designs a composite coating experimental group, firstly, the aqueous aluminum paste reflective coating obtained in the embodiment 5 is coated on a coated plate, and then the aqueous silicon-acrylic long afterglow coating obtained in the embodiment 2 is coated on an aqueous aluminum paste reflective coating layer, so as to test afterglow effect.
The test panels are prepared according to the GB/T9779-2015 standard requirements, and are tested by a long afterglow fluorescence tester, and the test results are shown in Table 1:
TABLE 1
According to the test results of Table 1, it can be seen that the aqueous silicon-acrylic long afterglow coating provided by the invention has longer afterglow time and higher afterglow brightness; according to the test result of the composite coating, the invention adopts the method of adding a layer of aluminum silver paste reflective intermediate layer at the bottom of the long afterglow coating to reflect the light emitted to the bottom of the coating back again, thereby improving the light utilization rate in the coating.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. The preparation method of the aluminate long afterglow material is characterized by comprising the following steps:
weighing 10-50 parts of ethyl orthosilicate, 0-60 parts of absolute ethyl alcohol and 0-60 parts of deionized water according to the weight parts, and fully mixing the above components;
step two, heating the mixed solution to more than 50 ℃, and regulating the solution to be alkaline by sodium hydroxide for 30min;
step three, the temperature of the mixed solution is increased to be more than 70 ℃, and the reaction is continued until the mixed solution is changed from transparent to milky white and the Tyndall effect appears;
adding the aluminate long afterglow material into the mixture, and stirring and dispersing the mixture;
sealing the stirred and dispersed long afterglow material mixture, and standing and aging for more than 2 hours at normal temperature;
step six, placing the aged material into a high-low temperature alternating wet heat box, and performing heat treatment for more than 1h under the conditions of 70-90 ℃ and 80-90% RH humidity, wherein the heating rate is 1 ℃/min;
and step seven, taking out the treated material, and drying at normal temperature to obtain the required long afterglow material coated with silicon dioxide.
2. An aluminate long afterglow material characterized in that it is prepared according to the preparation method of claim 1.
3. A coating paint is characterized by comprising an aqueous long afterglow paint;
the aqueous long afterglow coating comprises the following components in parts by mass: 30 to 60 parts of silicone-acrylic emulsion, 5 to 25 parts of aluminate long afterglow material, 0.1 to 1.5 parts of defoamer, 0.5 to 2.0 parts of flatting agent, 0.2 to 2.0 parts of wetting dispersant, 0.2 to 1.5 parts of thickener, 0.2 to 2.0 parts of film forming auxiliary agent and 15 to 30 parts of deionized water;
the aluminate long afterglow material is prepared according to the preparation method of claim 1.
4. The coating composition of claim 3, further comprising an aqueous aluminum paste reflective coating;
the water-based aluminum paste reflective coating comprises the following components in parts by weight: 30 to 60 parts of silicone-acrylic emulsion, 5 to 25 parts of aluminum paste, 0.1 to 1.5 parts of defoamer, 0.5 to 2.0 parts of flatting agent, 0.2 to 2.0 parts of aluminum paste directional dispersant, 0.2 to 1.5 parts of thickener, 0.2 to 2.0 parts of film forming additive and 5 to 30 parts of deionized water;
the aluminum paste orientation powder is one or more of BENTONE DY CE, BENTONE GS, BENTONE DE and BENTONE LT.
5. The coating composition of claim 3 or 4, wherein: the defoamer is a mixture of mineral oil and wax or a mixture of mineral oil containing hydrophobic particles.
6. The coating composition of claim 3 or 4, wherein: the leveling agent is polyether polyurethane.
7. The coating composition of claim 3 or 4, wherein: the wetting dispersant is an aqueous dispersant.
8. The coating composition of claim 3 or 4, wherein: the thickener is a nonionic water-soluble cellulose ether of high viscosity grade.
9. The coating composition of claim 4, wherein: the aluminum paste is water-based non-floating aluminum paste.
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| CN1371957A (en) * | 2002-03-26 | 2002-10-02 | 清华大学 | Method for covering silicon dioxide film on aluminate series long afterglow fluorescent powder surface |
| JP4932189B2 (en) * | 2004-08-10 | 2012-05-16 | 石原産業株式会社 | Luminescent material and method for producing the same |
| CN101333349B (en) * | 2008-07-02 | 2010-11-17 | 大连海事大学 | Water-soluble luminous paint with long afterglow phosphorescent material coated by nanometer titanium dioxide and method for preparing same |
| JP5967787B1 (en) * | 2016-02-12 | 2016-08-10 | エルティーアイ株式会社 | Method for producing phosphorescent pigment |
| CN108084746A (en) * | 2017-12-12 | 2018-05-29 | 新华盛节能科技股份有限公司 | A kind of aerosil coating and preparation method thereof |
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