CN115785948A - Protection architecture that can prolong and change light powder life limit in glued membrane - Google Patents
Protection architecture that can prolong and change light powder life limit in glued membrane Download PDFInfo
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- CN115785948A CN115785948A CN202211582791.4A CN202211582791A CN115785948A CN 115785948 A CN115785948 A CN 115785948A CN 202211582791 A CN202211582791 A CN 202211582791A CN 115785948 A CN115785948 A CN 115785948A
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- 239000000843 powder Substances 0.000 title claims abstract description 78
- 230000008859 change Effects 0.000 title description 2
- 239000012528 membrane Substances 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 55
- 239000002313 adhesive film Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000003989 dielectric material Substances 0.000 claims abstract description 6
- 229920000642 polymer Polymers 0.000 claims abstract description 3
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- 230000001681 protective effect Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
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- 239000003431 cross linking reagent Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 claims description 5
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005083 Zinc sulfide Substances 0.000 claims description 3
- YUKCYMTUTAARKC-UHFFFAOYSA-K [Zr+4].[Cr+3].P(=O)([O-])([O-])[O-].[Al+3] Chemical compound [Zr+4].[Cr+3].P(=O)([O-])([O-])[O-].[Al+3] YUKCYMTUTAARKC-UHFFFAOYSA-K 0.000 claims description 3
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- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000021286 stilbenes Nutrition 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 3
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 125000004622 benzoxazinyl group Chemical group O1NC(=CC2=C1C=CC=C2)* 0.000 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 2
- 229920001038 ethylene copolymer Polymers 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- DNXIASIHZYFFRO-UHFFFAOYSA-N pyrazoline Chemical compound C1CN=NC1 DNXIASIHZYFFRO-UHFFFAOYSA-N 0.000 claims description 2
- GOLORTLGFDVFDW-UHFFFAOYSA-N 3-(1h-benzimidazol-2-yl)-7-(diethylamino)chromen-2-one Chemical compound C1=CC=C2NC(C3=CC4=CC=C(C=C4OC3=O)N(CC)CC)=NC2=C1 GOLORTLGFDVFDW-UHFFFAOYSA-N 0.000 claims 1
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- KEQTWHPMSVAFDA-UHFFFAOYSA-N 2,3-dihydro-1h-pyrazole Chemical compound C1NNC=C1 KEQTWHPMSVAFDA-UHFFFAOYSA-N 0.000 description 1
- JFJWVJAVVIQZRT-UHFFFAOYSA-N 2-phenyl-1,3-dihydropyrazole Chemical class C1C=CNN1C1=CC=CC=C1 JFJWVJAVVIQZRT-UHFFFAOYSA-N 0.000 description 1
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- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 1
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- 229940058303 antinematodal benzimidazole derivative Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 125000003785 benzimidazolyl group Chemical class N1=C(NC2=C1C=CC=C2)* 0.000 description 1
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- 125000000623 heterocyclic group Chemical group 0.000 description 1
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- 239000001301 oxygen Substances 0.000 description 1
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a protection structure, in particular to a protection structure capable of prolonging the service life of light conversion powder in an adhesive film. Mainly containing light conversion powder in a porous dielectric material; the light conversion powder is protected by the porous medium material, so that the structure of the light conversion powder is not influenced by peroxide in the adhesive film; meanwhile, a coating is formed outside the porous medium material by using the polymer, so that a plurality of holes containing the light conversion powder in the porous medium material can be sealed, the possibility of reaction between the light conversion powder and air is reduced, and the service life of the light conversion powder can be prolonged.
Description
Technical Field
The invention relates to the technical field of packaging adhesive films, in particular to a protection structure capable of prolonging the service life of light conversion powder in an adhesive film.
Background
The current light conversion agent mainly comprises inorganic metal oxide fluorescent powder, organic dye fluorescent powder and rare earth complex. Wherein, the compatibility of the inorganic metal oxide fluorescent powder and the EVA/POE adhesive film is poor, the transparency is easily damaged, the absorption to ultraviolet rays is weak, and the overall light conversion efficiency is not high; the rare earth coordination compound has weak ultraviolet absorption and narrow fluorescence emission range, the emitted light is difficult to be converted by the cell slice, and the whole conversion efficiency is not high; the compatibility of the organic dye fluorescent powder and an EVA/POE adhesive film is good, the transparency of the adhesive film is excellent, the ultraviolet absorption is strong, and the integral light conversion efficiency is greatly improved; however, the film is not yellowing-resistant under ultraviolet irradiation, and is easily destroyed to lose the light conversion effect, which limits the application of the light conversion adhesive film.
However, in either type of light-converting powder (or phosphor), upon absorption of ultraviolet energy, the energy obtained causes the valence band to transition to the conduction band. In the process, the exposed light conversion powder is contacted with air and then is added into the adhesive film, and then the light conversion powder is contacted with the adhesive film; the contacted medium can cause the loss of transition electrons, and further leads to the reduction of the quantum efficiency of the light conversion powder. That is, when the valence electrons in the light-converting powder contact with the external substances (such as air, water, etc.), the valence electrons are very easy to chemically react with the external substances due to their high freeness, so that the valence electrons of the light-converting powder are lost and the quantum efficiency is low. Therefore, the patent can carry out ALD atomic deposition protection on the light conversion powder, and the quantum dots and the rare earth fluorescent powder can carry out atomic deposition at 100-200 ℃ due to the stability of the powder in the structure and higher temperature resistance, so that the quantum dots and the rare earth fluorescent powder are used as atomic deposition objects in the market at present.
However, another non-negligible fact in ALD atomic deposition is the well-known fact that the reaction temperature for atomic deposition also causes some damage to the structure of the organic components in the phosphor when quantum deposition is performed at a temperature range of, for example, 100-200 ℃.
Another problem which often occurs in products is that the required degree of crosslinking often occurs in the production process of the adhesive film, so that a crosslinking agent (peroxide) is added to the adhesive film. The cross-linking agent can bring fatal destructiveness to the structure of the light conversion powder, but the light conversion powder is an element which must be added; therefore, the amount of the crosslinking agent and the amount of the light conversion powder are not small, and the trouble is not brought to the practitioner.
In order to avoid the reaction between the light conversion powder and the elements in the air, thereby losing the quantum effect, avoiding the damage of the light conversion powder by the peroxide, and prolonging the service life of the light conversion powder, the embodiments of the present application aim to solve the above problems.
Disclosure of Invention
The main object of the present invention is to provide a protection structure for prolonging the lifetime of light conversion powder in an adhesive film, wherein the adhesive film comprises resin, cross-linking agent and light conversion powder, and the protection structure comprises a porous medium material having a plurality of holes for holding the light conversion powder therein, and an organic coating formed outside the holes for isolating the light conversion powder from air.
The invention also aims to provide that the porous medium material is selected from silicon dioxide, aerogel, porous titanium oxide, aluminum oxide, zinc sulfide, manganese oxide or aluminum chromium zirconium phosphate.
It is still another object of the present invention that the porous media material has a porosity of 10-95%.
It is still another object of the present invention that the porous media material has a pore size of 1nm to 2 μm.
It is still another object of the present invention that the porous medium material has a particle size of 5nm to 200 μm.
It is a further object of the present invention that the organic coating be a polymer. The organic coating is formed at the opening of the plurality of holes.
It is still another object of the present invention that the organic coating can be one of polyvinyl alcohol (PVA), vinyl acetate-ethylene copolymer (VAE), polyurethane or acrylate polymer.
It is still another object of the present invention that the plurality of holes are filled with light-converting powder.
The invention also provides a light-converting powder which is composed of a fluorescent dye and a fluorescent whitening agent, wherein the fluorescent dye can be a conjugated pi bond which contains a group capable of emitting fluorescence in a molecule, a color assisting group in a molecule or a rigid planar structure in a molecule.
The invention also aims to provide the light conversion powder which is composed of fluorescent dye and fluorescent brightener, wherein the fluorescent brightener comprises stilbene type, coumarin type, pyrazoline type, benzoxazinyl type and phthalimide type.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a porous media material having a plurality of pores in a protective structure according to the present invention.
Fig. 2 is a schematic diagram of a first embodiment of the protection structure of the present invention.
Fig. 3 is a schematic diagram of a second embodiment of the protection structure of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In order to clearly understand the technical contents of the present invention, the following examples are given in detail. The invention is further described with reference to the drawings and the detailed description. Those skilled in the art will be able to implement the invention based on these teachings. Furthermore, the embodiments of the present invention described in the following description are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.
The embodiment of the invention mainly provides a protection structure capable of prolonging the service life of light conversion powder in a glue film. As is well known, light conversion powder is a dye capable of emitting fluorescence, and refers to a substance capable of absorbing a light wave with a certain wavelength and then emitting a light wave with another wavelength longer than that of the absorbed light. Most of them are compounds containing a benzene ring or a heterocycle and having a conjugated double bond. After absorbing ultraviolet rays or visible light, the light with short wavelength can be converted into visible light wave with longer wavelength to be reflected, and the brilliant color is obtained.
Since the light-converting powder is composed of fluorescent dye and fluorescent whitening agent, the following two general categories are introduced more finely in the application, so as to reflect the advantages of the light-converting powder in the application.
Fluorescent dyes are compounds with special structures, and the structural characteristics of the fluorescent dyes are mainly as follows:
(1) The molecule contains a group which emits fluorescence, such as carbonyl, nitrogen-nitrogen double bond, carbon-nitrogen double bond and the like.
(2) The molecule contains a color assisting group. The chromophore group red shifts the spectrum and increases the fluorescence efficiency, such as primary amine groups, secondary amine groups, hydroxyl groups, ether linkages, amide groups, and the like.
(3) The molecule contains conjugated pi-bonds with rigid planar structure. The larger the intramolecular conjugated system is, the higher the planarity is, and the higher the fluorescence intensity is. Some factors that increase the degree of conjugation increase the efficiency of fluorescence and shift the wavelength of fluorescence in the longer wavelength direction.
Organic fluorescent whitening agent
Optical brighteners are a fluorescent dye, otherwise known as white dyes, and are also complex organic compounds. The fluorescent whitening agent has the characteristics that the fluorescent whitening agent can absorb incident light to generate fluorescence, so that a dyed substance obtains a flashing effect similar to fluorite, the substance seen by naked eyes is very white, the whitening effect is achieved, the fluorescent whitening agent and the original yellow light radiation are complementary to each other to form white light, and the whiteness of the product under sunlight is improved.
Chemical structure
Whitening agents all have cyclic conjugated systems in chemical structure such as: stilbene derivatives, phenylpyrazoline derivatives, benzimidazole derivatives, coumarin derivatives, phthalimide derivatives and the like. Wherein the yield of stilbene derivatives is maximized.
Category classification
Fluorescent whitening agents are mainly classified into plastic fluorescent whitening agents, paint ink whitening agents, coating fluorescent whitening agents, washing fluorescent whitening agents, paper fluorescent whitening agents, and the like according to the use application.
Fluorescent whitening agents can be divided into five classes according to chemical structure:
(1) the stilbene type is used for cotton fiber and certain industries of synthetic fiber, paper making, soap making and the like, and has blue fluorescence;
(2) coumarin type, which has coumarin basic structure, is used for xylonite, polyvinyl chloride plastic and the like, and has stronger blue fluorescence;
(3) pyrazoline type, which is used for fibers such as wool, polyamide, acrylic fiber and the like, and has green fluorescence;
(4) the benzoxazepine type is used for fibers such as acrylic fibers and plastics such as polyvinyl chloride and polystyrene, and has red fluorescence;
(5) the phthalimide type is used for terylene, acrylic fiber, chinlon and other fibers and has blue fluorescence.
Classifying according to whitening formulation number:
the common models of the fluorescent whitening agent industry are often inquired by an industrial person when purchasing, and the common models at present can be divided into:
fluorescent whitening agent BC, fluorescent whitening agent EBF, fluorescent whitening agent R, fluorescent whitening agent ER, fluorescent whitening agent PS-1, fluorescent whitening agent CXT, fluorescent whitening agent DT, fluorescent whitening agent MD, acid-resistant whitening agent VBA, fluorescent whitening agent VBL, hydrogen peroxide decomposition inhibitor DTPA, fluorescent whitening agent PLB, fluorescent whitening agent VBU (acid-resistant whitening agent VBU), fluorescent whitening agent OB, whitening agent KCB-E, fluorescent whitening agent FP127-T, fluorescent whitening agent OB, whitening agent KSN, fluorescent whitening agent 4BK, and the like.
The above description briefly summarizes that no matter what kind of light conversion powder (fluorescent agent) is used, in order to achieve the maximum protection effect, the organic light conversion powder is preferably used in the present invention, and the main reason is that the base resin in the adhesive film is organic, so that the organic light conversion powder can exert the maximum effect when combined with the organic adhesive film.
Furthermore, a porous dielectric material 10 with a protective structure for prolonging the lifetime of a light-transmitting powder in an adhesive film is provided as can be seen from FIG. 1 shown in the attached drawings and provided by the present application. The porous medium material 10 is an inorganic oxide, which may be one of silica, aerogel, porous titanium oxide, alumina, zinc sulfide, manganese oxide, or aluminum chromium zirconium phosphate. In addition, the inside of the porous medium material 10 is provided with a plurality of holes 11; the plurality of holes 11 can be communicated or not selectively communicated; there is no characterization therebetween. As shown in FIG. 1, the porous media material has a porosity of 10-95%. And has a pore diameter of 1nm to 2 μm and a particle diameter of 5nm to 200 μm. The holes 11 have an opening 12, and the light conversion powder 13 is received in the hole 11 through the opening 12. The size reduction of the light-converting powder can be achieved in a manner well known in the art, for example, by dissolving the light-converting powder in a solvent to form a solution, so that the light-converting powder becomes molecular-scale. Then, the porous medium material 10 with micron or submicron level is put into the solution, so that the light conversion powder 13 in the solution can enter each hole 11 and fill the hole, and the oxygen in the hole 11 is discharged; so as to reduce the yellowing probability of the light conversion powder 13 in the future and increase the service life of the light conversion powder 13. At this time, an antioxidant, an anti-ultraviolet agent, an anti-aging agent, and a light stabilizer may be added at appropriate timing to further protect the light conversion powder 13 adsorbed in the pores 11. Thereafter, drying is performed to leave the light-converting powder 13 (or including other added auxiliaries such as an antioxidant, an anti-ultraviolet agent, an aging inhibitor, a light stabilizer, etc.) inside the pores 11.
At this time, the adhesive film is manufactured by using an adhesive film manufacturing process, and when the porous medium material 10 filled with the light conversion powder 13 is placed into the adhesive film in the manufacturing process, the light conversion powder 13 and the porous medium material 10 are dispersed in the adhesive film, and are in full-surface contact with the peroxide also dispersed in the adhesive film. After the light conversion powder 13 is absorbed into the porous medium material 10, the contact area between the light conversion powder 13 and the peroxide in the adhesive film is greatly reduced, only the contact surface between the residual opening 12 and the adhesive film resin exists, and the contact area between the light conversion powder 13 and the adhesive film is greatly reduced. The light-converting powder 13 in the micro powder is not contacted with the peroxide at all, and only partial contact is carried out at the interface between the opening 12 of the porous medium material 10 and the peroxide, so that the integrity of the light-converting powder 13 is protected in an amplification way. At this time, the concentration of the peroxide at the interface between the porous medium material 10 and the adhesive film is far lower than that of the light conversion powder 13, and a large proportion of antioxidant is mixed in the light conversion powder 13, which can consume the free radicals generated by the peroxide.
At present, the organic light conversion agent in the photovoltaic adhesive film is directly mixed in the adhesive film, and when the compatibility is proper, the molecular level mixing can be realized without influencing the appearance of the adhesive film. However, the molecular structure of the organic light conversion agent causes poor peroxide resistance and poor ultraviolet irradiation resistance, and cannot match the 25-year service life of the photovoltaic module. However, when the above-mentioned porous dielectric material 10 is used to protect the light-transferring powder 13, the lifetime of the light-transferring powder 13 can be enhanced because the contact between the light-transferring powder 13 and the peroxide (not shown) in the adhesive film is reduced.
Referring now to FIG. 2 of the drawings, it can be seen that outside of the porous media material 10, a transparent organic coating 20 can be formed on the outside of the porous media material 10 using organic polymers such as PVA, VAE, polyurethane or acrylate to minimize the chance of air contact again. Alternatively, as shown in fig. 3, a transparent organic coating 30 may be formed at the opening 12 of the hole 11 to seal the opening 12 to reduce the chance of air contact.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The description is thus to be regarded as illustrative instead of limiting.
Claims (14)
1. A protection structure for prolonging service life of light conversion powder in an adhesive film comprises resin, a cross-linking agent and light conversion powder, and is characterized in that the protection structure comprises a porous medium material which can contain the light conversion powder in the interior and is provided with a plurality of holes, and an organic coating formed outside the plurality of holes so as to isolate the light conversion powder from air.
2. The protection structure of claim 1, wherein the porous medium material is selected from silica, aerogel, porous titanium oxide, alumina, zinc sulfide, manganese oxide, or aluminum chromium zirconium phosphate.
3. The protective structure of claim 1, wherein the porous dielectric material has a porosity of 10-95%.
4. The protection structure for prolonging lifetime of light-transmitting powder in an adhesive film according to claim 1, 2 or 3, wherein said porous medium material has a pore size of 1nm-2 μm.
5. The pellicle for prolonging the lifetime of a transferred powder according to claim 4, where the porous dielectric material has a particle size of 5nm to 200 μm.
6. The protective structure of claim 1 or 2, wherein the organic coating is a polymer.
7. The protective structure of claim 1 or 2, wherein the organic coating is one of polyvinyl alcohol (PVA), vinyl acetate-ethylene copolymer (VAE), polyurethane, or acrylate polymer.
8. The film package of claim 1, wherein the plurality of holes are filled with light-converting powder.
9. The protective structure of claim 1 wherein the porous dielectric material is transparent.
10. The protective structure of claim 1, wherein the light-converting powder is an organic light-converting powder.
11. The protective structure of claim 1, 7 or 9, wherein the organic coating is transparent.
12. The protection structure of claim 1, wherein the organic coating is formed at the opening of the plurality of holes.
13. The protective structure of claim 10, wherein the light-converting powder is composed of a fluorescent dye and a fluorescent whitening agent, wherein the fluorescent dye contains a group emitting fluorescence in a molecule, a color-assisting group in a molecule, or a conjugated pi-bond with a rigid planar structure in a molecule.
14. The protection structure of claim 10, wherein the light-transferring powder comprises a fluorescent dye and a fluorescent whitening agent, wherein the fluorescent whitening agent comprises stilbene, coumarin, pyrazoline, benzoxazinyl, or phthalimide.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211582791.4A CN115785948A (en) | 2022-12-09 | 2022-12-09 | Protection architecture that can prolong and change light powder life limit in glued membrane |
| PCT/CN2023/075936 WO2024066166A1 (en) | 2022-09-30 | 2023-02-14 | Protective structure in adhesive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211582791.4A CN115785948A (en) | 2022-12-09 | 2022-12-09 | Protection architecture that can prolong and change light powder life limit in glued membrane |
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| CN115785948A true CN115785948A (en) | 2023-03-14 |
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| CN202211582791.4A Pending CN115785948A (en) | 2022-09-30 | 2022-12-09 | Protection architecture that can prolong and change light powder life limit in glued membrane |
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Citations (4)
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|---|---|---|---|---|
| WO1997032815A1 (en) * | 1996-03-08 | 1997-09-12 | Graham John Bratton | Mesoporous material |
| CN107285324A (en) * | 2017-07-28 | 2017-10-24 | 南京邮电大学 | The preparation of mesoporous hollow silica nano material |
| CN107820941A (en) * | 2017-11-23 | 2018-03-23 | 成都新柯力化工科技有限公司 | One kind is anti-oxidant to turn light agricultural plastic film and preparation method thereof |
| CN111662655A (en) * | 2020-06-30 | 2020-09-15 | 苏州中来光伏新材股份有限公司 | POE photovoltaic adhesive film and preparation method thereof |
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2022
- 2022-12-09 CN CN202211582791.4A patent/CN115785948A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| WO1997032815A1 (en) * | 1996-03-08 | 1997-09-12 | Graham John Bratton | Mesoporous material |
| CN107285324A (en) * | 2017-07-28 | 2017-10-24 | 南京邮电大学 | The preparation of mesoporous hollow silica nano material |
| CN107820941A (en) * | 2017-11-23 | 2018-03-23 | 成都新柯力化工科技有限公司 | One kind is anti-oxidant to turn light agricultural plastic film and preparation method thereof |
| CN111662655A (en) * | 2020-06-30 | 2020-09-15 | 苏州中来光伏新材股份有限公司 | POE photovoltaic adhesive film and preparation method thereof |
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