CN111560126B - Modified light conversion material and preparation method and application thereof - Google Patents
Modified light conversion material and preparation method and application thereof Download PDFInfo
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- CN111560126B CN111560126B CN202010362270.2A CN202010362270A CN111560126B CN 111560126 B CN111560126 B CN 111560126B CN 202010362270 A CN202010362270 A CN 202010362270A CN 111560126 B CN111560126 B CN 111560126B
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- 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
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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
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- 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
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Abstract
The invention provides a modified light conversion material, a preparation method and application thereof. The micelle containing the barrier material and the light stabilizer is used for coating and modifying the light conversion material, so that when the light stabilizer absorbs ultraviolet radiation to prolong the service life of the light conversion material, the barrier material is used for absorbing residual ultraviolet, the contact between water vapor and oxygen is prevented, and the stability of the light conversion material is further improved.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a modified light conversion material, and a preparation method and application thereof.
Background
The rare earth red light material serving as a light conversion agent is added into the light conversion film, so that the yield of crops is remarkably increased, however, the material is extremely easy to decompose under the action of water vapor and UV radiation, and the light conversion effect gradually disappears within 0.5-3 months. Researchers carry out modification treatment such as coating silicon on the surface and coating aluminum on the surface of a light conversion agent consisting of MS, Eu and Re, and although the timeliness of light conversion is slightly prolonged, the modified material cannot overcome the influence of water vapor and cannot prevent ultraviolet rays, so that the problem of stability of MS, Eu and Re cannot be overcome up to now; the light conversion agent with the composition of NInS2-xSex is used as a novel red light conversion system, and has few research reports on agricultural use, and no reports on moisture resistance and UV radiation are available.
Disclosure of Invention
The invention aims to provide a modified light conversion material, a preparation method and application thereof, so as to overcome the defect that the existing light conversion agent is unstable to water vapor, oxygen and ultraviolet rays.
In a first aspect of the present invention, there is provided:
the modified light conversion material comprises a light conversion agent, wherein the surface of the light conversion agent is coated with a light stabilizer and a barrier material.
Preferably, the light conversion agent is selected from MS, Eu, Re and NInS2-xSexWherein M is selected from at least one of Ca, Sr, Ba, Zn, Fe, Mg and Ti; re is at least one of Ce, Dy, Mn, Sm, Yb and Tb; n is at least one selected from Cu, Ag and Zn; x is more than or equal to 0 and less than or equal to 2.
Preferably, the light stabilizer is at least one selected from the group consisting of an organosilane light stabilizer, a salicylic acid light stabilizer, a benzophenone light stabilizer, a benzotriazole light stabilizer, a triazine light stabilizer, an acrylate light stabilizer, gallic acid, benzoquinone, titanium dioxide, zinc oxide, tin dioxide, cerium oxide, aluminum oxide, iron oxide, magnesium oxide, silicon dioxide, zirconium oxide, magnesium oxide, a carbon quantum dot, a graphene quantum dot, and a semiconductor quantum dot.
Preferably, the light stabilizer is at least one selected from the group consisting of salicylic acid-based light stabilizers, benzophenone-based light stabilizers, benzotriazole-based light stabilizers, triazine-based light stabilizers, titanium dioxide, and carbon quantum dots.
Preferably, the barrier material is at least one selected from the group consisting of PVDC and EVOH.
Preferably, the modified light conversion material is formed by solidifying a colloidal solution.
Preferably, the colloidal solution comprises 0.01-10 parts by mass of a light stabilizer, 1-99 parts by mass of a barrier material and 0.1-50 parts by mass of a light conversion agent.
Preferably, the colloidal solution comprises 0.1-6 parts by mass of a light stabilizer, 1-50 parts by mass of a barrier material and 0.1-10 parts by mass of a light conversion agent.
In a second aspect of the present invention, there is provided:
the preparation method of the modified light conversion material comprises the following steps:
(1) fully and uniformly mixing the light stabilizer and the barrier material in the aqueous solution to form a micellar solution;
(2) adding a light conversion material into the micelle solution, uniformly mixing, and curing at 15-80 ℃ to obtain the light conversion material.
In a third aspect of the present invention, there is provided:
the modified light conversion material is applied to a light conversion film, and the modified light conversion material is the modified light conversion material or is prepared by the preparation method.
The invention has the beneficial effects that:
1. the conversion agent is coated and modified by a water vapor-proof barrier material such as PVDC (polyvinylidene chloride) or EVOH (Ethylene vinyl alcohol copolymer) to prevent the influence of water vapor on the unstable conversion material, so that the water vapor-proof conversion material is obtained.
2. The light conversion agent is coated by the barrier material of the light stabilizer, so that the influence of ultraviolet radiation in sunlight can be prevented, and the stability of the light conversion material is further improved.
3. The micelle containing the barrier material and the light stabilizer is used for coating and modifying the light conversion material, so that when the light stabilizer absorbs ultraviolet radiation to prolong the service life of the light conversion material, the barrier material is used for absorbing residual ultraviolet, the contact between water vapor and oxygen is prevented, and the stability of the light conversion material is further improved.
Drawings
FIG. 1 is a graph showing the change of absorption spectrum and emission spectrum of a light conversion film prepared by modifying a light conversion material in example 1 with the aging time of a xenon lamp.
FIG. 2 is a graph showing the change of absorption spectrum and emission spectrum with xenon lamp aging time of a light conversion film obtained from the light conversion material of comparative example 1.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be described in further detail with reference to specific embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The modified light conversion material comprises a light conversion agent, wherein the surface of the light conversion agent is coated with a light stabilizer and a barrier material.
Preferably, the light conversion agent is selected from MS, Eu, Re and NInS2-xSexWherein M is selected from at least one of Ca, Sr, Ba, Zn, Fe, Mg and Ti; re is at least one of Ce, Dy, Mn, Sm, Yb and Tb; n is at least one selected from Cu, Ag and Zn; x is more than or equal to 0 and less than or equal to 2.
Preferably, the light stabilizer is at least one selected from the group consisting of an organosilane light stabilizer, a salicylic acid light stabilizer, a benzophenone light stabilizer, a benzotriazole light stabilizer, a triazine light stabilizer, an acrylate light stabilizer, gallic acid, benzoquinone, titanium dioxide, zinc oxide, tin dioxide, cerium oxide, aluminum oxide, iron oxide, magnesium oxide, silicon dioxide, zirconium oxide, magnesium oxide, a carbon quantum dot, a graphene quantum dot, and a semiconductor quantum dot.
Preferably, the light stabilizer is at least one selected from the group consisting of salicylic acid-based light stabilizers, benzophenone-based light stabilizers, benzotriazole-based light stabilizers, triazine-based light stabilizers, titanium dioxide, and carbon quantum dots.
Preferably, the barrier material is at least one selected from the group consisting of PVDC and EVOH.
Preferably, the modified light conversion material is formed by solidifying a colloidal solution.
Preferably, the colloidal solution comprises 0.01-10 parts by mass of a light stabilizer, 1-99 parts by mass of a barrier material and 0.1-50 parts by mass of a light conversion agent.
Preferably, the colloidal solution comprises 0.1-6 parts by mass of a light stabilizer, 1-50 parts by mass of a barrier material and 0.1-10 parts by mass of a light conversion agent.
The preparation method of the modified light conversion material comprises the following steps:
(1) fully and uniformly mixing the light stabilizer and the barrier material in the aqueous solution to form a micellar solution;
(2) adding a light conversion material into the micelle solution, uniformly mixing, and curing at 15-80 ℃ to obtain the light conversion material.
In a third aspect of the present invention, there is provided:
the modified light conversion material is applied to a light conversion film, and the modified light conversion material is the modified light conversion material or is prepared by the preparation method.
The invention will be further explained and illustrated with reference to specific examples.
Example 1:
weighing 1 part by mass of phenyl o-hydroxybenzoate and 95 parts by mass of PVDC, and fully and uniformly mixing in an aqueous solution to form a micellar solution; and adding 4 parts by mass of a light conversion agent CaS: eu and Mn, and curing at 25 ℃ after uniformly mixing to obtain the modified light conversion material.
Example 2:
weighing 10 parts by mass of benzol ortho-hydroxybenzoate and 50 parts by mass of PVDC, and fully and uniformly mixing in an aqueous solution to form a micellar solution; and adding 40 parts by mass of light conversion agent CuInSSe into the micelle solution, uniformly mixing, and curing at 50 ℃ to obtain the modified light conversion material.
Example 3:
weighing 5 parts by mass of phenyl o-hydroxybenzoate and 20 parts by mass of PVDC, and fully and uniformly mixing in an aqueous solution to form a micellar solution; and then adding 40 parts by mass of a light conversion agent ZnS: eu, Tb and 35 parts of ZnInS by mass are uniformly mixed and then cured at 80 ℃ to obtain the modified light conversion material.
Comparative example 1:
weighing 100 parts by mass of a light conversion agent CaS: eu and Mn are mixed evenly to prepare micellar solution, and the micellar solution is solidified at 25 ℃ to obtain the light conversion material.
Comparative example 2:
weighing 96 parts by mass of PVDC, and fully and uniformly mixing in an aqueous solution to form a micellar solution; and adding 4 parts by mass of a light conversion agent CaS: eu and Mn, and curing at 25 ℃ after uniformly mixing to obtain the light conversion material.
Comparative example 3:
weighing 10 parts by mass of benzol o-hydroxybenzoate, and fully and uniformly mixing in an aqueous solution to form a micelle solution; and adding 90 parts by mass of light conversion agent CuInSSe into the micelle solution, uniformly mixing, and curing at 50 ℃ to obtain the modified light conversion material.
Example 4:
5 parts by mass of the light conversion agent prepared in the above examples 1 to 3 and comparative examples 1 to 3 were weighed, mixed with 95 parts by mass of polypropylene resin, and extruded and blown into a film at 160 ℃ by a film blowing machine, wherein the film thickness is 0.1 to 0.2 mm.
Test example:
the light conversion films of example 1 and comparative example 1 prepared in example 4 were subjected to absorption spectrum and emission spectrum tests, respectively, to obtain fig. 1 and fig. 2, and as can be seen from comparison of fig. 1 and fig. 2, the light conversion films prepared by coating the light conversion material with the light stabilizer and the barrier material had small change in light emission intensity, and as the xenon lamp aging time changes, the light conversion films had small change in light emission intensity, and even after the xenon lamp was aged for 800h, the light conversion films prepared by coating the light conversion material with the light stabilizer and the barrier material had good attenuation of light emission intensity as the xenon lamp aging time was prolonged.
The 6 nd medium transfer film obtained in example 4 was subjected to an oxygen permeability test, and the test results are shown in table 1:
as can be seen from Table 1, the oxygen permeability of the light conversion film made of the modified light conversion material coated by the barrier material is greatly reduced, the barrier material can effectively block the oxidative decomposition of oxygen on the light conversion material, and the aging of the light conversion film can be prolonged by adding the light stabilizer, so that the oxygen permeability of the light conversion material is further reduced.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (6)
1. A modified light conversion material, comprising: the light conversion agent comprises a light conversion agent, wherein the surface of the light conversion agent is coated with a light stabilizer and a barrier material;
the light conversion agent is selected from MS, Eu, Re and NInS2-xSexWherein M is selected from at least one of Ca, Sr, Ba, Zn, Fe, Mg and Ti; re is at least one of Ce, Dy, Sm, Yb and Tb; n is at least one selected from Cu, Ag and Zn; x is more than or equal to 0 and less than or equal to 2;
the barrier material is PVDC;
the modified light conversion material is formed by solidifying a colloidal solution;
the colloidal solution comprises, by mass, 0.01-10 parts of a light stabilizer, 1-99 parts of a barrier material and 0.1-50 parts of a light conversion agent.
2. The modified light conversion material of claim 1, wherein: the light stabilizer is selected from at least one of organosilane light stabilizers, salicylic acid light stabilizers, benzophenone light stabilizers, benzotriazole light stabilizers, triazine light stabilizers, acrylate light stabilizers, gallic acid, benzoquinone-ortho-hydroxybenzoate, titanium dioxide, zinc oxide, tin dioxide, cerium dioxide, aluminum oxide, iron oxide, magnesium oxide, silicon dioxide, zirconium oxide, carbon quantum dots, graphene quantum dots and semiconductor quantum dots.
3. The modified light conversion material of claim 2, wherein: the light stabilizer is at least one selected from salicylic acid light stabilizers, benzophenone light stabilizers, benzotriazole light stabilizers, triazine light stabilizers, titanium dioxide and carbon quantum dots.
4. The modified light conversion material of claim 1, wherein: the colloidal solution comprises, by mass, 0.1-6 parts of a light stabilizer, 1-50 parts of a barrier material and 0.1-10 parts of a light conversion agent.
5. A method for preparing the modified light conversion material according to any one of claims 1 to 4, wherein the method comprises the following steps: the method comprises the following steps:
(1) fully and uniformly mixing the light stabilizer and the barrier material in the aqueous solution to form a micellar solution;
(2) and adding the light conversion material into the micelle solution, uniformly mixing, and curing to obtain the modified light conversion material.
6. The application of a modified light conversion material in a light conversion film, wherein the modified light conversion material is the modified light conversion material in any one of claims 1 to 4, or is prepared by the preparation method in claim 5.
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| CN114933882A (en) * | 2022-06-14 | 2022-08-23 | 广东菊兰新型材料科技有限公司 | Durable sealant with ultrahigh elongation, high adhesion and high toughness and preparation method thereof |
| CN118909233B (en) * | 2024-10-12 | 2024-12-10 | 青州市一润农膜厂 | Agricultural film with improved light quality and increased temperature and preparation method thereof |
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