CN115449240B - Blue light shielding material and preparation method and application thereof - Google Patents
Blue light shielding material and preparation method and application 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
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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Abstract
The invention discloses a blue light shielding material, a preparation method and application thereof. The blue light shielding material of the present invention includes: sb (Sb) 2 O 3 1.5 to 7 weight portions; mgO 1.3-2.7 weight portions; tiO (titanium dioxide) 2 2.3 to 6 weight portions; la (La) 2 O 3 0.5 to 1.7 weight portions; and 3 to 8 parts by weight of a beta-diketone light stabilizer. The blue light shielding material has higher light transmittance and lower overflow rate.
Description
Technical Field
The invention relates to a blue light shielding material, a preparation method and application thereof.
Background
Blue light exists in large amounts in computer displays, fluorescent lamps, cell phones, digital products, display screens, LEDs, etc. Blue light irradiation of the retina produces free radicals which lead to the attenuation of retinal pigment epithelial cells, which lead to vision impairment, and which are irreversible. The existing blue light prevention lamp mostly adopts a yellow filter cover to absorb blue light emitted by the LED lamp, but the brightness of the lamp is inevitably reduced by using the filter cover.
CN114484311a discloses a blue light and ultraviolet light free LED lamp tube, which comprises a glass tube and a PCB circuit board arranged in the glass tube, wherein the PCB circuit board is provided with an LED light emitting chip. The glass tube is internally provided with a wrapper, the wrapper comprises an LED light-emitting chip, the wrapper is a mixture containing fluorescent powder and glue, and the LED light-emitting chip generates light radiation to excite the mixture after being electrified through a PCB circuit board. The fluorescent powder comprises silicon-based oxynitride green fluorescent powder, silicon-based nitride red fluorescent powder and LuAG green fluorescent powder, and the glue is organic silica gel.
CN211952654U discloses a blue light filtering LED lamp, comprising a lamp tube and a lamp cap, wherein the inside of the lamp tube is provided with LED lamp beads. The inside of a lamp tube is provided with the snoot outside the LED lamp pearl, and the inside tip that is located the snoot of lamp tube is provided with solid fixed ring, and the cavity has been seted up to solid fixed ring's inside, and inside packing has three primary colors phosphor powder, and gu fixed ring's one side is provided with the lens, is provided with the blue filter membrane on the lateral wall of lens.
The method relieves the damage of blue light to a certain extent, but has larger influence on the light transmission effect of the lamp.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a blue light shielding material having a high transmittance for light in a wavelength range of 250 to 1000nm and a low overflow rate for light in a wavelength range of 350 to 440 nm.
Another object of the present invention is to provide a method of manufacturing the blue light shielding material.
It is a further object of the present invention to provide a use of a blue light shielding material in an LED light emitting device.
In one aspect, the present invention provides a blue light shielding material comprising:
according to the blue light shielding material of the present invention, preferably, the blue light shielding material includes:
according to the blue light shielding material of the present invention, preferably, the blue light shielding material is composed of:
according to the blue light shielding material of the present invention, preferably, the β -diketone light stabilizer is represented by the following formula:
wherein R is 1 、R 2 、R 3 、R 4 And R is 5 Respectively represents H or C1-C6 alkyl.
According to the blue light shielding material of the present invention, preferably, the β -diketone light stabilizer is represented by the following formula:
according to the blue light shielding material of the present invention, preferably, the transmittance of the blue light shielding material for light in the 250 to 1000nm wavelength band is not less than 93%, and the overflow rate for light in the 350 to 440nm wavelength band is not more than 3.0%.
In another aspect, the present invention provides a method for preparing the above blue light shielding material, including:
sb is made of 2 O 3 、MgO、TiO 2 、La 2 O 3 And roasting the beta-diketone light stabilizer to obtain a roasted product;
and crushing the roasting product to obtain the blue light shielding material.
In yet another aspect, the present invention provides the use of the blue light shielding material described above in an LED lighting device.
According to the application of the invention, preferably, the LED lighting device is an LED lamp tube.
According to the use of the present invention, preferably, the blue light shielding material is used as a coating material of an LED lamp tube.
The blue light shielding material of the present invention comprises a specific content of Sb 2 O 3 、MgO、TiO 2 、La 2 O 3 And a beta-diketone light stabilizer, such a blue light shielding material has both a higher transmittance for visible light and a lower overflow rate for blue light.
Detailed Description
The present invention will be further described with reference to specific examples, but the scope of the present invention is not limited thereto.
< blue light-shielding Material >
The blue light shielding material of the present invention comprises Sb 2 O 3 、MgO、TiO 2 、La 2 O 3 And a beta-diketone light stabilizer. Preferably, the blue light shielding material does not contain Na 2 O、Li 2 O、K 2 O、B 2 O 3 And SiO 2 . According to one embodiment of the present invention, the blue light shielding material is made of Sb 2 O 3 、MgO、TiO 2 、La 2 O 3 And a beta-diketone light stabilizer. The blue light shielding material has higher light transmittance for light with the wavelength range of 250-1000 nm and lower overflow rate for light with the wavelength range of 350-440 nm.
In the present invention, sb 2 O 3 The content of the components is 1.5 to 7 weight parts; preferably 2 to 6 parts by weight; more preferably 3 to 5 parts by weight. According to one embodiment of the invention, sb 2 O 3 The content of (2) was 4 parts by weight.
In the invention, the MgO content is 1.3-2.7 parts by weight; preferably 1.7 to 2.5 parts by weight; more preferably 2 to 2.2 parts by weight. According to one embodiment of the present invention, the content of MgO is 2 parts by weight.
In the present invention, tiO 2 The content of the components is 2.3 to 6 weight portions; preferably 2.5 to 5 parts by weight; more preferably 2.8 to 4 parts by weight. According to one embodiment of the invention, tiO 2 The content of (2) was 3 parts by weight.
In the present invention, la 2 O 3 The content of the components is 0.5 to 1.7 weight parts; preferably 0.7 to 1.5 parts by weight; more preferably 0.8 to 1.2 parts by weight. According to one embodiment of the invention, la 2 O 3 The content of (2) is 1 part by weight.
The beta-diketone light stabilizer has a chemical structure shown in the following formula:
wherein R is 1 、R 2 、R 3 、R 4 And R is 5 Respectively represents H or C1-C6 alkyl. Preferably, R 1 、R 2 、R 3 、R 4 And R is 5 Respectively represents H or C1-C3 alkyl.
Alkyl may be an alkanyl or cycloalkyl group; preferably an alkanyl group. Examples of alkyl groups include, but are not limited to, methyl, ethyl, propyl, butyl, 2-methyl-propyl, pentyl, 2-methyl-butyl, 2-ethyl-propyl, hexyl, 2-methyl-pentyl, 3-methyl-pentyl, 4-methyl-pentyl, 2-ethyl-butyl, 3-ethyl-butyl, cyclopropane, cyclopentane, cyclohexane.
According to one embodiment of the present invention, the β -diketone light stabilizer is 3,3' - (1, 4-phenylene) bis (1-phenylpropane-1, 3-dione) having a chemical structure represented by the formula:
in the invention, the content of the beta-diketone light stabilizer is 3 to 8 weight parts; preferably 4 to 7 parts by weight; more preferably 5 to 6 parts by weight. According to one embodiment of the invention, the content of the beta-diketone light stabilizer is 5 parts by weight.
The content of each component in the blue light shielding material is controlled within the above range, which is helpful for improving the light transmittance and reducing the overflow rate.
The transmittance of the blue light shielding material for light in the wavelength range of 250-1000 nm is more than or equal to 93.0%; preferably, the light transmittance is not less than 93.5%. The light transmittance was measured as follows: 2 parts by weight of a blue light shielding material and 1 part by weight of sodium acrylate salt were formed into a slurry. And coating the slurry on the LED lamp tube to obtain a sample to be tested. And testing the sample wafer of the to-be-tested sample by adopting a Hitachi UH-4150 spectroscope, wherein the testing wavelength range is 250-1000 nm.
The overflow rate of the blue light shielding material for 350-440 nm wave band light is less than or equal to 3.0%; preferably, the overflow rate is 2.5% or less. The overflow rate is measured by the following method: 2 parts by weight of a blue light shielding material and 1 part by weight of sodium acrylate salt were formed into a slurry. And coating the slurry on the LED lamp tube to obtain a sample to be tested. And (3) testing the overflow rate of the sample wafer of the to-be-tested sample to light with the wave band of 350-440 nm by adopting a HAAS2000 fluorescence spectrometer.
< preparation method of blue light shielding Material >
The preparation method of the blue light shielding material comprises the following steps: sb is made of 2 O 3 、MgO、TiO 2 、La 2 O 3 And roasting the beta-diketone light stabilizer to obtain a roasted product; and crushing the roasting product to obtain the blue light shielding material.
Sb 2 O 3 The dosage of (2) can be 1.5-7 parts by weight; preferably 2 to 6 parts by weight; more preferably 3 to 5 parts by weight. According to one embodiment of the invention, sb 2 O 3 The amount of (C) was 4 parts by weight.
The amount of MgO may be 1.3 to 2.7 parts by weight; preferably 1.7 to 2.5 parts by weight; more preferably 2 to 2.2 parts by weight. According to one embodiment of the present invention, mgO is used in an amount of 2 parts by weight.
TiO 2 The dosage of (2.3-6 parts by weight); preferably 2.5 to 5 parts by weight; more preferably 2.8 to 4 parts by weight. According to one of the present inventionEmbodiments of TiO 2 The amount of (C) was 3 parts by weight.
La 2 O 3 The dosage of (C) can be 0.5-1.7 parts by weight; preferably 0.7 to 1.5 parts by weight; more preferably 0.8 to 1.2 parts by weight. According to one embodiment of the invention, la 2 O 3 The amount of (C) is 1 part by weight.
The amount of the beta-diketone light stabilizer can be 3 to 8 parts by weight; preferably 4 to 7 parts by weight; more preferably 5 to 6 parts by weight. According to one embodiment of the invention, the beta-diketone light stabilizer is used in an amount of 5 parts by weight. The beta-diketone light stabilizer is specifically as described above.
The roasting temperature can be 1400-1750 ℃; preferably 1500-1650 ℃; more preferably 1500 to 1550 ℃.
The purpose of the pulverization is to refine the cake obtained by the calcination into powder. The method of pulverizing is not limited in the present invention. For example, the calcined product may be jawed in a jaw crusher and then sanded in a sandmill.
< use of blue light-shielding Material >
The blue light shielding material has higher light transmittance and lower overflow rate, and can be applied to LED light emitting equipment. Accordingly, the present invention provides the use of the above blue light shielding material in an LED light emitting device. The LED lighting device may be an LED lamp, preferably a white LED lamp.
The blue light shielding material can be used as a coating material of an LED lamp tube. Therefore, the blue light overflow rate of the LED lamp tube can be reduced on the premise of ensuring the light transmittance of the LED lamp tube. Specifically, a slurry including a blue light shielding material is coated on the LED lamp tube, thereby forming a coating layer on the LED lamp tube. The slurry may also contain a dispersant. The dispersant may be sodium acrylate (C) 3 H 3 NaO 2 ). The mass ratio of the blue light shielding material to the dispersing agent can be (1-4): 1; preferably (1-3): 1; more preferably (2-3): 1.
The β -diketone light stabilizer used in the following examples and comparative examples is 3,3' - (1, 4-phenylene) bis (1-phenylpropane-1, 3-dione) as shown in the following formula:
the 3,3' - (1, 4-phenylene) bis (1-phenylpropane-1, 3-dione) was obtained by the method disclosed in "How solvent-free crosslinking conditions alter the chemistry and topology of hemiketal based Polymer networks" (Polymer 229 (2021) 123986) by Tobias Urbaniak et al, as follows:
NaH (200 mmol) stored in mineral oil was washed 2 times with anhydrous THF, each in an amount of 20mL. NaH was suspended in anhydrous THF (100 mL) and acetophenone (100 mmol) and dimethyl terephthalate (50 mmol) were added to the THF suspension of NaH; then, the mixture was stirred at room temperature for 60 minutes under nitrogen atmosphere and at 50℃for 48 hours to obtain a mixture. The mixture was cooled to room temperature and then quenched by the addition of water (200 mL) and HCl solution (2M, 100 mL) to give a suspension. The suspension was filtered, and the collected solid was washed with water and chloroform, and then dried in vacuo to give 3,3' - (1, 4-phenylene) bis (1-phenylpropane-1, 3-dione).
Example 1 and comparative examples 1 to 5
Sb is made of 2 O 3 、MgO、TiO 2 、La 2 O 3 And the beta-diketone light stabilizer are mixed in a mixer and then baked at 1500 ℃ to obtain a baked product. And jaw breaking is carried out on the roasting product by a jaw breaker, and then sand grinding is carried out by a sand mill, so that the blue light shielding material is obtained. The composition of the blue light shielding material is shown in table 1.
TABLE 1
| Sequence number | Composition of blue light shielding material |
| Example 1 | 4Sb 2 O 3 :2MgO:3TiO 2 :1La 2 O 3 5 beta-diketones |
| Comparative example 1 | 4Sb 2 O 3 :3MgO:2TiO 2 :1La 2 O 3 5 beta-diketones |
| Comparative example 2 | 4Sb 2 O 3 :3MgO:1TiO 2 :2La 2 O 3 5 beta-diketones |
| Comparative example 3 | 4Sb 2 O 3 :2MgO:2TiO 2 :2La 2 O 3 5 beta-diketones |
| Comparative example 4 | 4Sb 2 O 3 :1MgO:3TiO 2 :2La 2 O 3 5 beta-diketones |
| Comparative example 5 | 4Sb 2 O 3 :1MgO:2TiO 2 :3La 2 O 3 5 beta-diketones |
Note that: the numbers preceding each chemical component represent the parts by weight of that component in the blue light shielding material.
Comparative example 6
Removing La 2 O 3 Replaced by BaCO 3 And the blue light shielding material has the composition of 4Sb 2 O 3 :2MgO:3TiO 2 0.78BaO 5 beta-diketone the procedure of example 1 is followed.
Comparative example 7
Removing La 2 O 3 Replaced by Al 2 O 3 And the blue light shielding material has the composition of 4Sb 2 O 3 :2MgO:3TiO 2 :1Al 2 O 3 5 beta-diketone the rest is the same as in example 1.
Comparative example 8
Except MgO and TiO 2 Replaced by BaCO 3 And Al 2 O 3 In addition, the composition of the blue light shielding material is 4Sb 2 O 3 :1.55BaO:3Al 2 O 3 :1La 2 O 3 5 beta-diketone the rest is the same as in example 1.
Experimental example
The blue light-shielding materials of example 1 and comparative examples 1 to 8 were each formed into a slurry with sodium acrylate salt. The weight ratio of the blue light shielding material to the sodium acrylate in the slurry is 2:1. And coating the slurry on the LED lamp tube to obtain a sample to be tested.
And testing a sample wafer of the to-be-tested sample by adopting a Hitachi UH-4150 spectroscope to obtain the light transmittance. The test wavelength range is 250-1000 nm. The results obtained are shown in Table 2.
And (3) testing the overflow rate of the sample wafer of the to-be-tested sample to light with the wave band of 350-440 nm by adopting a HAAS2000 fluorescence spectrometer. The results obtained are shown in Table 2.
TABLE 2
| Sequence number | Transmittance (%) | Overflow rate (%) |
| Example 1 | 93.69 | 2.50 |
| Comparative example 1 | 84.51 | 4.32 |
| Comparative example 2 | 87.40 | 2.78 |
| Comparative example 3 | 90.48 | 3.36 |
| Comparative example 4 | 84.22 | 2.46 |
| Comparative example 5 | 91.28 | 2.12 |
| Comparative example 6 | 93.52 | 3.67 |
| Comparative example 7 | 93.87 | 3.55 |
| Comparative example 8 | 93.01 | 3.90 |
As is clear from comparison of example 1 with comparative examples 1 to 5, the content of each component in the blue light shielding material has an important influence on the light transmittance and overflow rate thereof. As is clear from comparison of example 1 with comparative examples 6 to 8, the composition of the blue light shielding material has an important influence on the light transmittance and the overflow rate of the blue light shielding material, and the blue light shielding material cannot achieve both the light transmittance and the overflow rate after the composition is changed.
The present invention is not limited to the above-described embodiments, and any modifications, improvements, substitutions, and the like, which may occur to those skilled in the art, fall within the scope of the present invention without departing from the spirit of the invention.
Claims (8)
1. A blue light shielding material, characterized by comprising:
2. the blue light shielding material according to claim 1, wherein the β -diketone light stabilizer is represented by the formula:
wherein R is 1 、R 2 、R 3 、R 4 And R is 5 Respectively represents H or C1-C6 alkyl.
3. The blue light shielding material according to claim 1, wherein the β -diketone light stabilizer is represented by the formula:
4. a blue light shielding material according to any one of claims 1 to 3, wherein said blue light shielding material has a light transmittance of not less than 93% for light in a wavelength band of 250 to 1000nm and an overflow rate of not more than 3.0% for light in a wavelength band of 350 to 440 nm.
5. The method for producing a blue light shielding material according to any one of claims 1 to 4, comprising:
sb is made of 2 O 3 、MgO、TiO 2 、La 2 O 3 And roasting the beta-diketone light stabilizer to obtain a roasted product;
and crushing the roasting product to obtain the blue light shielding material.
6. Use of the blue light shielding material according to any one of claims 1 to 4 in an LED light emitting device.
7. The use of claim 6, wherein the LED lighting device is an LED tube.
8. The use according to claim 6, wherein the blue light shielding material is used as a coating material of an LED tube.
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| CN113646281A (en) * | 2019-04-03 | 2021-11-12 | 株式会社德山 | Photochromic optical article and method of making same |
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| JP2002080736A (en) * | 2000-09-05 | 2002-03-19 | Fuji Xerox Co Ltd | Heat-ray shielding material, heat-ray shielding composition, heat-ray shielding element and heat-ray shielding sheet |
| CN103499852B (en) * | 2013-10-10 | 2016-01-13 | 中国科学院上海技术物理研究所 | blue light filter film for visible light communication |
| CN107445474B (en) * | 2014-01-22 | 2020-06-09 | 成都光明光电股份有限公司 | High-refraction high-dispersion optical glass, optical element and optical instrument |
| CN106967429B (en) * | 2017-03-30 | 2019-08-30 | 上海应用技术大学 | A kind of red fluorescence powder and preparation method thereof of fluorescence thermal stability enhancing |
| JP7153455B2 (en) * | 2018-03-06 | 2022-10-14 | 日本板硝子株式会社 | glass laminate |
| CN113388397B (en) * | 2020-03-13 | 2023-06-30 | 包头稀土研究院 | Red fluorescent material containing rare earth element and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106410016A (en) * | 2015-02-02 | 2017-02-15 | 费罗公司 | Glass compositions and glass frit composites for use in optical applications |
| CN113646281A (en) * | 2019-04-03 | 2021-11-12 | 株式会社德山 | Photochromic optical article and method of making same |
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