CN111087940A - Light guide composite packaging adhesive film and preparation method and application thereof - Google Patents
Light guide composite packaging adhesive film and preparation method and application thereof Download PDFInfo
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- CN111087940A CN111087940A CN201911269341.8A CN201911269341A CN111087940A CN 111087940 A CN111087940 A CN 111087940A CN 201911269341 A CN201911269341 A CN 201911269341A CN 111087940 A CN111087940 A CN 111087940A
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- adhesive film
- film layer
- light guide
- guide powder
- powder
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 185
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 130
- 239000011521 glass Substances 0.000 claims abstract description 37
- 239000002245 particle Substances 0.000 claims description 30
- 239000003365 glass fiber Substances 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004005 microsphere Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000010248 power generation Methods 0.000 abstract description 15
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 28
- 229910052710 silicon Inorganic materials 0.000 description 28
- 239000010703 silicon Substances 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 19
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 description 9
- 239000003431 cross linking reagent Substances 0.000 description 8
- 239000003292 glue Substances 0.000 description 6
- 239000007822 coupling agent Substances 0.000 description 4
- 239000011325 microbead Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- FIYMNUNPPYABMU-UHFFFAOYSA-N 2-benzyl-5-chloro-1h-indole Chemical compound C=1C2=CC(Cl)=CC=C2NC=1CC1=CC=CC=C1 FIYMNUNPPYABMU-UHFFFAOYSA-N 0.000 description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 3
- 241000227425 Pieris rapae crucivora Species 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- -1 trimethylolpropane trimethyl acrylic acid methyl ester Chemical compound 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Substances CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
- C08K7/20—Glass
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/322—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a light guide composite packaging adhesive film and a preparation method and application thereof, wherein the composite packaging adhesive film comprises a first adhesive film layer and a second adhesive film layer; the first adhesive film layer and the second adhesive film layer comprise light guide powder; the mass of the light guide powder contained in the first adhesive film layer is smaller than that of the light guide powder contained in the second adhesive film layer. The light guide powder is added in the adhesive film layer, the light guide powder can change the transmission direction of light rays through light refraction, and when the light guide powder is applied to the double-sided solar cell single glass backboard, the light can guide the sunlight to the back surface of the cell piece, so that the back surface of the cell piece can be contacted with the sunlight, the luminous flux of the solar cell module is effectively improved, and the power of photovoltaic power generation is further enhanced. Simultaneously, this application is through control the quality of the leaded light powder that contains in the first glued membrane layer is less than the quality of the leaded light powder that contains in the second glued membrane layer, can also further improve the refracting index of leaded light powder to light, is showing the power that promotes photovoltaic power generation.
Description
Technical Field
The invention relates to the technical field of packaging adhesive films for solar photovoltaic modules, in particular to a light guide composite packaging adhesive film and a preparation method and application thereof, and particularly relates to a light guide packaging adhesive film for a double-sided solar cell single glass back plate and a preparation method and application thereof.
Background
With the improvement of environmental awareness of people and the importance of society on renewable energy, solar power generation is rapidly developed as an environmental-friendly energy source.
The lower adhesive film of the conventional single-glass assembly is a UV-cut transparent adhesive film or a white adhesive film with a light reflecting function, and the assembly made of the adhesive film is a single-sided battery piece in multiple choices. In order to improve the power generation power, the assembly factory urgently needs to use double-sided battery plates. At present, the double-sided battery piece is used for double-glass at most, but double-glass is heavy in mass, and if an aluminum frame is not added, the double-sided battery piece has a high fragment rate. There are also assembly plants that use transparent backplates to replace back glass, but transparent backplates have poor UV resistance and also poor sandstorm resistance. The double-sided battery is difficult to use in the field of single glass.
CN208157432U discloses a double-sided battery single glass solar energy component, including glass, double-sided battery piece, backplate, be located glass with the double-sided battery piece between the first transparent glue film layer, double-sided battery single glass solar energy component still including be located double-sided battery piece with the backplate between the second transparent glue film layer, be located the second transparent glue film layer with the backplate between one deck or multilayer reflection stratum. The utility model discloses paste double-sided battery piece one side and be the transparent glued membrane layer of second, paste backplate one side and be one deck or multilayer reflection stratum to make the reflection distance of light can not too far also can not too closely, thereby make subassembly power gain good. However, in this method, the reflectivity of the reflective layer is between 91-94%, and there is still room for the reflectivity to increase.
Therefore, exploring methods and approaches to use bifacial cells for single glass photovoltaic modules is a challenge currently facing the photovoltaic field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a light guide composite packaging adhesive film and a preparation method and application thereof. According to the invention, the light guide powder is added in the adhesive film layer, and the light guide powder can change the transmission direction of light rays through light refraction, so that when the double-sided solar cell is applied to a double-sided solar cell, the double-sided solar cell can be matched with a common white back plate, the self weight of the double-sided solar cell is effectively reduced, the solar light in the gaps of the cell and the blank part of the edge can be guided to the back surface of the cell, the back surface of the cell can be contacted with sunlight, the luminous flux of a solar cell module is effectively improved, and the power of photovoltaic power generation is further enhanced.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present disclosure provides a light guide composite encapsulation adhesive film, which includes a first adhesive film layer and a second adhesive film layer; the first adhesive film layer and the second adhesive film layer comprise light guide powder; the mass of the light guide powder contained in the first adhesive film layer is smaller than that of the light guide powder contained in the second adhesive film layer.
When the light guide composite packaging film is applied to a double-sided solar cell single glass back plate, the first adhesive film layer is positioned on one side close to a solar cell, and the second adhesive film layer is positioned on one side of the first adhesive film layer far away from the solar cell, namely the second adhesive film layer is positioned on one layer close to the back plate.
According to the invention, the light guide powder is added in the film layer, the light guide powder can change the transmission direction of light rays through light refraction, and when the light guide powder is applied to the double-sided solar cell single glass backboard, the solar light at the gaps and the blank edge parts of the cell pieces can be guided to the back surface of the cell pieces, so that the double-sided cell pieces can be matched with a common white backboard, and the back surface of the cell pieces can be contacted with sunlight, thereby effectively improving the luminous flux of the solar cell module and further enhancing the power of photovoltaic power generation.
Meanwhile, the invention also controls the quality of the light guide powder contained in the first adhesive film layer to be smaller than that of the light guide powder contained in the second adhesive film layer, so that the refractive index of the light guide powder to light rays can be further improved, and the power of photovoltaic power generation is obviously improved.
Preferably, the light guide powder in the first adhesive film layer and the second adhesive film layer is independently selected from any one of organic silicon light guide powder, glass fiber light guide powder or glass micro-bead light guide powder or a combination of at least two of the organic silicon light guide powder, the glass fiber light guide powder and the glass micro-bead light guide powder.
Preferably, the mass percentage of the light guide powder contained in the first adhesive film layer is 0.2-0.4%, for example, 0.2%, 0.22%, 0.25%, 0.29%, 0.3%, 0.32%, 0.35%, 0.38%, 0.4%, or the like, based on 100% of the total mass of the first adhesive film layer.
Preferably, the average particle size of the light-guiding powder contained in the first adhesive film layer is 0.03 to 1 μm, and may be, for example, 0.03 μm, 0.05 μm, 0.08 μm, 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, or 1 μm.
Preferably, the mass percentage of the light guide powder contained in the second adhesive film layer is 0.4-0.6%, for example, 0.4%, 0.42%, 0.45%, 0.48%, 0.5%, 0.53%, 0.55%, 0.58%, 0.6%, or the like, based on 100% of the total mass of the second adhesive film layer.
Preferably, the average particle size of the light-guiding powder contained in the second adhesive film layer is 1 to 5 μm, and may be, for example, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, or 5 μm.
The invention preferably controls the average grain diameter of the light guide powder contained in the first film layer to be 0.03-1 μm, the average grain diameter of the light guide powder contained in the second film layer to be 1-5 μm, namely the average grain diameter of the light guide powder contained in the first film layer is smaller than that of the light guide powder contained in the second film layer, when the first film layer and the second film layer are compounded for use, because the first film layer is close to one side of the battery, light can firstly enter the first film layer, when the average grain diameter of the light guide powder contained in the first film layer is smaller, more light can be refracted to enter the back side of the battery piece, meanwhile, the omitted light enters the second film layer, because the average grain diameter of the light guide powder contained in the second film layer is larger, more light can be refracted to the first film layer, and then the light guide powder contained in the first film layer is refracted to enter the back side of the battery layer, light guide powder in two glue film layers can be mutually matched through particle sizes, the refractive index of the light guide powder to light is obviously improved, and the power of photovoltaic power generation is effectively improved.
Preferably, the thickness of the first adhesive film layer is 50-300 μm, for example, 50 μm, 100 μm, 150 μm, 200 μm, 250 μm or 300 μm.
Preferably, the thickness of the second adhesive film layer is 100-400 μm, and may be, for example, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm or 400 μm.
According to the invention, the thickness of the second adhesive film layer is preferably larger than that of the first adhesive film layer, so that the refractive index of the second adhesive film layer to light rays is further improved, and the power of photovoltaic power generation is further improved.
Preferably, the main material in the first adhesive film layer and the second adhesive film layer is independently selected from EVA resin and/or POE resin.
Preferably, the composite packaging adhesive film further comprises a third adhesive film layer, and the third adhesive film layer is positioned on one side of the second adhesive film layer, which is far away from the first adhesive film layer;
the third adhesive film layer comprises light guide powder; the mass of the light guide powder contained in the third adhesive film layer is greater than that of the light guide powder contained in the second adhesive film layer.
The composite packaging adhesive film preferably further comprises a third adhesive film layer, and the components of the third adhesive film layer also comprise light guide powder; and meanwhile, the quality of the light guide powder contained in the third adhesive film layer is controlled to be larger than that of the light guide powder contained in the second adhesive film layer. The light rays omitted from the second adhesive film layer are refracted back to the second adhesive film layer again, and the refractive index of the overall light guide composite packaging adhesive film to the light rays is further improved.
Preferably, the light guide powder in the third adhesive film layer is selected from any one of or a combination of at least two of organic silicon light guide powder, glass fiber light guide powder or glass micro-bead light guide powder.
Preferably, the content of the light guide powder in the third adhesive film layer is 0.6-0.8% by mass, for example, 0.6%, 0.62%, 0.65%, 0.68%, 0.7%, 0.72%, 0.75%, 0.78%, 0.8%, or the like, based on 100% by mass of the total third adhesive film layer.
Preferably, the average particle size of the light guide powder contained in the third adhesive film layer is 5 to 10 μm, and may be, for example, 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, 8.5 μm, 9 μm, 9.5 μm, or 10 μm.
Preferably, the thickness of the third adhesive film layer is 50-200 μm, for example, 50 μm, 100 μm, 150 μm or 200 μm.
Preferably, the main material in the third adhesive film layer is EVA resin and/or POE resin.
In addition to the main material, the three adhesive film layers also respectively and independently include a crosslinking agent, an auxiliary crosslinking agent, an ultraviolet absorber, an antioxidant, a light stabilizer, a coupling agent, and the like.
In a second aspect, the present invention further provides a method for preparing the light guide composite encapsulant film according to the first aspect, where the method includes: and (3) co-extruding and molding the components of the first adhesive film layer, the components of the second adhesive film layer and optionally the components of the third adhesive film layer to obtain the light guide composite packaging adhesive film.
Preferably, the preparation method comprises: and respectively mixing the components of the first adhesive film layer, the second adhesive film layer and optionally the third adhesive film layer, and performing coextrusion molding to obtain the light guide composite packaging adhesive film.
Preferably, the temperature of the coextrusion molding is 80 to 100 ℃, for example, 80 ℃, 83 ℃, 85 ℃, 90 ℃, 92 ℃, 95 ℃, 98 ℃ or 100 ℃ and the like.
Preferably, the preparation method further comprises: and embossing, cooling, drawing and rolling after the co-extrusion molding to obtain the light guide composite packaging adhesive film.
In a third aspect, the invention further provides an application of the light guide composite packaging adhesive film in the first aspect in a double-sided solar cell single glass backboard packaging adhesive film.
The light guide composite packaging adhesive film has a light guide function, and can guide sunlight in gaps of the cell pieces and blank parts of edges to the back of the cell pieces, so that the back of the cell pieces is contacted with the sunlight.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the light guide powder is added into the film layer, the light guide powder can change the transmission direction of light rays through light refraction, and when the light guide powder is applied to the double-sided solar cell single glass backboard, the solar light at the gaps and the blank edge parts of the cell piece can be guided to the back surface of the cell piece, so that the double-sided cell piece can be matched with a common white backboard, and the back surface of the cell piece can be contacted with sunlight, thereby effectively improving the luminous flux of a solar cell module and further enhancing the power of photovoltaic power generation;
(2) according to the invention, the quality of the light guide powder contained in the first adhesive film layer is controlled to be smaller than that of the light guide powder contained in the second adhesive film layer, so that the refractive index of the light guide powder to light rays is further improved, and the power of photovoltaic power generation is remarkably improved.
Detailed Description
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
The manufacturers and the brands of part of the raw materials used in the examples and the comparative examples of the invention are as follows:
EVA (available from Korean Doudou Dall, under the trademark E280 PV);
POE (available from DOW corporation under the designation 38669);
organic silicon light guide powder (available from changxing chemical industry gmbh under the designation ETERPEARLDF30B 5);
glass fiber light guide powder (purchased from Shandong glass fiber group company, with the brand number of 921-13%);
glass microsphere light guide powder (purchased from Yali science and technology Co., Ltd., China, under the brand name H32).
Example 1
The embodiment provides a light guide composite packaging adhesive film and a preparation method thereof.
Wherein, the total mass of first glued membrane layer is 100g, includes: 97.7g of EVA, 0.3g of organic silicon light guide powder (average particle size is 0.4 μm), 0.7g of tert-butyl peroxy-2-ethylhexyl carbonate (cross-linking agent), 0.5g of trimethylolpropane trimethyl acrylic acid methyl ester (auxiliary cross-linking agent), 0.3g of 2-hydroxy-4-n-octoxybenzophenone (UV-531) (ultraviolet absorbent) and 0.5g of 3-methacryloxypropyl trimethoxy silane (coupling agent).
The total mass of the second adhesive film layer is 100g, and the second adhesive film layer comprises: 97.5g of EVA, 0.5g of organic silicon light guide powder (average particle size is 1.5 μm), 0.7g of tert-butyl peroxy-2-ethylhexyl carbonate (cross-linking agent), 0.5g of trimethylolpropane trimethyl acrylic acid methyl ester (auxiliary cross-linking agent), 0.3g of 2-hydroxy-4-n-octoxybenzophenone (UV-531) (ultraviolet absorbent) and 0.5g of 3-methacryloxypropyl trimethoxy silane (coupling agent).
The preparation method comprises the following steps:
the light guide composite packaging adhesive film is prepared by respectively mixing the components of the first adhesive film layer and the second adhesive film layer, performing co-extrusion molding at 90 ℃, and embossing, cooling, drawing and rolling the obtained co-extrusion molded product.
Example 2
The only difference from example 1 is that a third glue film layer was added.
Wherein, the third glue film layer gross mass is 100g, includes: the first adhesive film layer includes: 97.3g of EVA, 0.7g of organic silicon light guide powder (the average particle diameter is 6 μm), 0.7g of tert-butyl peroxy-2-ethylhexyl carbonate (cross-linking agent), 0.5g of trimethylolpropane trimethyl acrylic acid methyl ester (auxiliary cross-linking agent), 0.3g of 2-hydroxy-4-n-octoxy benzophenone (UV-531) (ultraviolet absorbent) and 0.5g of 3-methacryloxypropyl trimethoxy silane (coupling agent).
Example 3
The difference from example 1 is that:
in the first adhesive film layer, POE is used for replacing EVA;
and in the second adhesive film layer, POE is used for replacing EVA.
Example 4
The difference from example 1 is that:
in the first adhesive film layer, POE is used for replacing EVA.
Example 5
The difference from example 1 is that:
and in the second adhesive film layer, POE is used for replacing EVA.
Example 6
The difference from example 1 is that:
in the first film layer, 0.4g (average particle size is 0.05 μm) of glass fiber light guide powder is used to replace 0.3g (average particle size is 0.4 μm) of organic silicon light guide powder;
in the second film layer, 0.45g (average particle size of 2 μm) of silicone light guide powder was used instead of 0.5g (average particle size of 1.5 μm) of silicone light guide powder.
Example 7
The difference from example 1 is that:
in the first film layer, 0.2g (average particle size of 0.8 μm) of glass micro-bead light guide powder is used to replace 0.3g (average particle size of 0.4 μm) of organic silicon light guide powder;
in the second film layer, 0.6g (average particle size of 3 μm) of glass fiber light guide powder is used to replace 0.5g (average particle size of 1.5 μm) of organic silicon light guide powder.
Example 8
The difference from example 2 is that:
and in the third adhesive film, replacing POE with EVA.
Example 9
The difference from example 2 is that:
in the third adhesive film, 0.8g (average particle size of 10 μm) of glass fiber light guide powder is used to replace 0.7g (average particle size of 6 μm) of organic silicon light guide powder.
Example 10
The difference from example 2 is that:
in the third adhesive film, 0.6g (average particle size of 5 μm) of glass microsphere light guide powder is used instead of 0.7g (average particle size of 6 μm) of organic silicon light guide powder.
Example 11
The difference from example 1 is only that the average particle size of the silicone light guide powder in the first adhesive film layer is 1.5 μm, and the average particle size of the silicone light guide powder in the second adhesive film layer is 0.4 μm.
Example 12
The difference from example 2 is only that the amount of the silicone light guide powder in the third adhesive film layer is 0.3 g.
Example 13
The difference from example 2 is only that the average particle size of the silicone light guide powder in the third adhesive film layer is 4 μm.
Example 14
The difference from example 2 is only that the average particle size of the silicone light guide powder in the third adhesive film layer is 15 μm.
Comparative example 1
The difference from embodiment 1 is that neither the first adhesive film layer nor the second adhesive film layer contains the organic silicon light guide powder.
Comparative example 2
The difference from example 1 is that the first adhesive film layer does not contain organic silicon light guide powder, and the content of the organic silicon light guide powder in the second adhesive film layer is 0.8 g.
Comparative example 3
The difference from example 1 is that the second adhesive film layer does not contain organic silicon light guide powder, and the content of the organic silicon light guide powder in the first adhesive film layer is 0.8 g.
Comparative example 4
The difference from example 1 is that the amount of the organic silicon light guide powder in the first adhesive film layer is 0.5g, and the amount of the light guide powder in the second adhesive film layer is 0.3 g.
Comparative example 5
The difference from the example 1 is that the usage amount of the organic silicon light guide powder in the first film layer is 0.5g, and the average grain diameter is 1.5 μm; the usage amount of the organic silicon light guide powder in the second film layer is 0.3g, and the average grain diameter is 0.4 mu m.
Comparative example 6
The difference from the example 2 is that the usage amount of the organic silicon light guide powder in the first film layer is 0.7g, and the average grain diameter is 6 μm; the usage amount of the organic silicon light guide powder in the third film layer is 0.3g, and the average grain diameter is 0.4 mu m.
Application examples 1 to 14
Application examples 1 to 14 correspond to the light guide composite encapsulation films obtained in the application examples 1 to 14, respectively, and the solar double-sided cell single glass assembly is prepared by using the same tempered glass, double-sided cell and back plate according to the preparation method of the solar cell assembly.
Comparative application examples 1 to 6
Comparative application examples 1 to 6 the light guide composite encapsulating films obtained in comparative examples 1 to 6 were used respectively correspondingly, and the solar double-sided cell single glass assembly was prepared according to the preparation method of the solar cell assembly with the same tempered glass, double-sided cell sheet, and back sheet.
And (3) performance testing:
1. testing the generated power: and testing the generated power according to the light guide composite packaging film prepared according to the IEC 61215 corresponding example and the comparative application example.
The specific test results are shown in table 1.
TABLE 1
From table 1, it can be seen that the generated power of the double-sided cell sheet single-glass photovoltaic module prepared by using the light guide composite packaging adhesive film prepared in the embodiment of the invention is obviously improved.
Compared with the embodiment 1, the first adhesive film layer and the second adhesive film layer in the comparative example 1 do not contain organic silicon light guide powder, and the power generation power of the double-sided battery single-glass assembly prepared by the method is obviously lower than that of the embodiment 1, which shows that the light guide powder is added into the packaging adhesive film, so that the power generation power of the double-sided battery single-glass assembly can be effectively increased.
Compared with the example 1, the first adhesive film layer in the comparative example 2 does not contain organic silicon light guide powder, the second adhesive film layer in the comparative example 3 does not contain organic silicon light guide powder, and the generated power of the double-sided battery single-glass assembly prepared by the method is also obviously lower than that of the example 1, which shows that the generated power of the double-sided battery single-glass assembly can be effectively increased only by enabling each adhesive film layer to contain light guide powder and enabling the adhesive film layers to be matched with each other for synergistic interaction.
Compared with the embodiment 1, the quality of the organic silicon light guide powder contained in the first adhesive film layer in the comparative example 4 is higher than that of the organic silicon light guide powder contained in the second adhesive film layer, and the power generation power of the double-sided battery single-glass assembly prepared by the organic silicon light guide powder is also obviously lower than that of the embodiment 1, which indicates that the power generation power of the double-sided battery single-glass assembly can be effectively improved only by ensuring that the light guide powder contained in the first adhesive film layer is more than that contained in the second adhesive film layer.
Compared with the example 1, the kind, the amount and the average particle size of the light guide powder contained in the first adhesive film layer in the comparative example 5 are the same as those of the light guide powder contained in the second adhesive film layer in the example 1, and the kind, the amount and the average particle size of the light guide powder contained in the second adhesive film layer in the comparative example 5 are the same as those of the light guide powder contained in the first adhesive film layer in the example 1, that is, compared with the example 1, the comparative example 5 is equivalent to the position exchange of the first adhesive film layer and the second adhesive film layer in the example 1, and the generated power of the double-sided battery single glass assembly prepared by the method is also obviously lower than that of the example 1, which shows that the positions of the first adhesive film layer and the second adhesive film layer in the invention must ensure that the amount and the particle size of the light guide powder are all within the range of the invention, so as to effectively increase the generated power of the double-sided battery.
Meanwhile, comparative example 6 also proves that when the light guide composite packaging adhesive film contains three adhesive film layers, the light guide composite packaging adhesive film can increase the refractive power of light to the maximum extent only by ensuring that the dosage and the particle size of light guide powder contained in each of the three adhesive film layers are within the range of the invention, so that the generated power of the prepared double-sided battery single-glass assembly is increased.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. A light guide composite packaging adhesive film is characterized by comprising a first adhesive film layer and a second adhesive film layer;
the first adhesive film layer and the second adhesive film layer comprise light guide powder;
the mass of the light guide powder contained in the first adhesive film layer is smaller than that of the light guide powder contained in the second adhesive film layer.
2. The composite packaging adhesive film of claim 1, wherein the light guide powder in the first adhesive film layer and the second adhesive film layer is independently selected from any one of silicone light guide powder, glass fiber light guide powder or glass microsphere light guide powder or a combination of at least two of the silicone light guide powder, the glass fiber light guide powder and the glass microsphere light guide powder;
preferably, the mass percentage of the light guide powder contained in the first adhesive film layer is 0.2-0.4% based on 100% of the total mass of the first adhesive film layer;
preferably, the average particle size of the light guide powder contained in the first adhesive film layer is 0.03-1 μm;
preferably, the mass percentage of the light guide powder contained in the second adhesive film layer is 0.4-0.6% based on 100% of the total mass of the second adhesive film layer;
preferably, the average particle size of the light guide powder contained in the second adhesive film layer is 1-5 μm.
3. The composite packaging adhesive film according to claim 1 or 2, wherein the thickness of the first adhesive film layer is 50-300 μm;
preferably, the thickness of the second adhesive film layer is 100-400 μm;
preferably, the main material in the first adhesive film layer and the second adhesive film layer is independently selected from EVA resin and/or POE resin.
4. The composite packaging adhesive film of any one of claims 1-3, further comprising a third adhesive film layer on a side of the second adhesive film layer away from the first adhesive film layer;
the third adhesive film layer comprises light guide powder; the mass of the light guide powder contained in the third adhesive film layer is greater than that of the light guide powder contained in the second adhesive film layer.
5. The composite packaging adhesive film of claim 4, wherein the light guide powder in the third adhesive film layer is selected from one of silicone light guide powder, glass fiber light guide powder or glass microsphere light guide powder or a combination of at least two of the foregoing;
preferably, the mass percentage of the light guide powder contained in the third adhesive film layer is 0.6-0.8% based on 100% of the total mass of the third adhesive film layer;
preferably, the average particle size of the light guide powder contained in the third adhesive film layer is 5-10 μm.
6. The composite packaging adhesive film of claim 4 or 5, wherein the thickness of the third adhesive film layer is 50-200 μm;
preferably, the main material in the third adhesive film layer is EVA resin and/or POE resin.
7. The method for preparing the light-guiding composite packaging adhesive film according to any one of claims 1 to 6, wherein the method comprises the following steps: and (3) co-extruding and molding the components of the first adhesive film layer, the components of the second adhesive film layer and optionally the components of the third adhesive film layer to obtain the light guide composite packaging adhesive film.
8. The method of manufacturing according to claim 7, comprising: respectively mixing the components of the first adhesive film layer, the second adhesive film layer and optionally the third adhesive film layer, and performing coextrusion molding to obtain the light guide composite packaging adhesive film;
preferably, the temperature of the coextrusion molding is 80 to 100 ℃.
9. The method of manufacturing according to claim 8, further comprising: and embossing, cooling, drawing and rolling after the co-extrusion molding to obtain the light guide composite packaging adhesive film.
10. The light-guiding composite packaging adhesive film according to any one of claims 1 to 6, wherein the light-guiding composite packaging adhesive film is applied to a double-sided solar cell single glass backboard packaging adhesive film.
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