CN104992995A - Composite membrane, preparation method thereof and solar cell assembly - Google Patents
Composite membrane, preparation method thereof and solar cell assembly Download PDFInfo
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- CN104992995A CN104992995A CN201510275179.6A CN201510275179A CN104992995A CN 104992995 A CN104992995 A CN 104992995A CN 201510275179 A CN201510275179 A CN 201510275179A CN 104992995 A CN104992995 A CN 104992995A
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- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 239000012528 membrane Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 116
- 239000002346 layers by function Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims description 42
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 16
- 238000003851 corona treatment Methods 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 229920002799 BoPET Polymers 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000003700 epoxy group Chemical group 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 abstract description 20
- 230000000903 blocking effect Effects 0.000 abstract 4
- 230000035515 penetration Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 11
- 230000032683 aging Effects 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
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- 229920001780 ECTFE Polymers 0.000 description 1
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 1
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- 238000009825 accumulation Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000002596 correlated effect Effects 0.000 description 1
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- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
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- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table
-
- 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
- Y02E10/547—Monocrystalline silicon PV cells
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a composite membrane, a preparation method thereof and a solar cell assembly. The composite membrane comprises a moisture blocking layer; a bonding layer covering two opposite surfaces of the moisture blocking layer; and a weather-proof functional layer covering the surface away from the moisture blocking layer of the bonding layer. According to the invention, the composite membrane comprising the moisture blocking layer, the bonding layer and the weather-proof functional layer is used for replacing current common glass as a front end encapsulating material of a solar cell assembly, so while the composite membrane is provided with high light penetration rate, the weather-proof function, anti-ultraviolet-aging performance and waterproof performance thereof are ensured; unit weight of the solar cell assembly is greatly reduced; and the solar cell assembly is lighter and easier to transport and install.
Description
Technical field
The present invention relates to technical field of semiconductors, in particular to preparation method and the solar module of a kind of composite membrane, composite membrane.
Background technology
Crystal silicon solar batteries uses the class photovoltaic products the most extensive, occupation rate of market is the highest at present, and within 2014, its occupation rate of market reaches 94%.The structure of usual crystal silicon solar batteries assembly is made up of (see Chinese patent CN102244128A) following components: (1) glass; (2) cell piece; (3) backboard.Wherein, glass is positioned at the front of whole assembly, and backboard is positioned at module backside, and by resin glue (mainly EVA glue) by battery sheet packaging between.Therefore, glass and backboard will have certain mechanical strength, weather resistance, water vapor barrier property, uvioresistant performance and ageing-resistant performance, and to the effect that the crystal-silicon battery slice of inside plays protection and supports.
In said structure; why crystal silicon solar batteries assembly will in front glass packaging; mainly because glass does not exist aging problem under ultraviolet irradiation; and there is certain mechanical strength and block-water performance; effectively can protect crystal silicon battery and circuit thereof, and photoelectric conversion efficiency steady in a long-term can be ensured.
Although above-mentioned traditional crystal silicon solar batteries modular construction can ensure the output of electric power preferably for a long time, but still there is the aspect that some are to be improved: on the one hand, glass is as a part for assembly, its weight has accounted for a big chunk, does not meet market to the light-weighted requirement of photovoltaic products; On the other hand, use glass as the front end encapsulating material of assembly, the feature of the as easy as rolling off a log fragmentation of its fragility, for later product transport, installation and safeguard all there is inconvenience; In addition, some are had to the assembly of special shape requirement, the hard feature of its quality of glass is not easy to meet flexible requirement.
Summary of the invention
Main purpose of the present invention is the preparation method and the solar module that provide a kind of composite membrane, composite membrane, substitutes glass in solar module to adopt composite membrane.
To achieve these goals, according to an aspect of the present invention, provide a kind of composite membrane, this composite membrane comprises: aqueous vapor separation layer; Tack coat, is covered on two apparent surfaces of aqueous vapor separation layer; Weather-proof functional layer, is covered in tack coat away from the surface of aqueous vapor separation layer.
Further, aqueous vapor separation layer comprises transparent organic film and is arranged at the transparent inorganic oxide layer on two apparent surfaces of organic transparent film layer.
Further, transparent organic film is PET film or PEN film.
Further, the material of transparent inorganic oxide layer is silicon dioxide, titanium oxide, zinc oxide or aluminium oxide.
Further, the thickness of transparent organic film is 20 ~ 188 μm; The thickness being positioned at the transparent inorganic oxide layer of organic transparent film layer either side is 10 ~ 200nm.
Further, tack coat is pressure sensitive adhesive tape.
Further, the composition of pressure sensitive adhesive tape is polyacrylic binding agent, polyurethanes binding agent, epoxies binding agent or polyesters binding agent.
Further, the thickness of pressure sensitive adhesive tape is between 30 ~ 80 μm.
Further, weather-proof functional layer is fluoro-containing copolymer film, and the thickness of weather-proof functional layer is between 50 ~ 100 μm.
Further, tack coat and weather-proof functional layer are all symmetrical arranged along aqueous vapor separation layer.
According to a further aspect in the invention, provide a kind of preparation method of above-mentioned composite membrane, this preparation method comprises the following steps: prepare aqueous vapor separation layer and weather-proof function individual layer respectively; A surface of weather-proof function individual layer is formed bonding individual layer, and weather-proof function individual layer and bonding individual layer form functional unit layer; Overlaying function elementary layer on two apparent surfaces of aqueous vapor separation layer respectively, and bonding individual layer fits on the surface of aqueous vapor separation layer, the bonding individual layer being positioned at the both sides of aqueous vapor separation layer forms tack coat, and the weather-proof function individual layer being positioned at the both sides of aqueous vapor separation layer forms weather-proof functional layer.
Further, the step preparing aqueous vapor separation layer comprises: carry out corona treatment to two apparent surfaces of transparent organic film; On two apparent surfaces of the transparent organic film after corona treatment, deposition forms transparent inorganic oxide layer, and transparent organic film and transparent inorganic oxide layer form aqueous vapor separation layer.
Further, the step that a surface of weather-proof function individual layer is formed bonding individual layer comprises: carry out corona treatment to a surface of weather-proof function individual layer, forms corona surface; Corona surface is formed bonding individual layer.
Present invention also offers a kind of solar module, this solar module comprises composite membrane provided by the invention, backboard and the cell piece between this composite membrane and backboard.
Apply technical scheme of the present invention, the present invention adopts composite membrane to substitute glass conventional at present using the front end encapsulating material as solar module, and comprise aqueous vapor separation layer, tack coat and weather-proof functional layer due to this composite membrane, thus make this composite membrane while taking into account high light transmission rate, ensure that its weather resistance, resistance to UV aging and block-water performance out of doors, and greatly reduce the Unit Weight of solar module, make solar module weight lighter, transport and easier for installation.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the cross-sectional view of the composite membrane provided according to the specific embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.
It should be noted that used term is only to describe embodiment here, and be not intended to the illustrative embodiments of restricted root according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to comprise plural form, in addition, it is to be further understood that, " comprise " when using term in this manual and/or " comprising " time, it indicates existing characteristics, step, operation, device, assembly and/or their combination.
For convenience of description, here can usage space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for the spatial relation described as a device shown in the figure or feature and other devices or feature.Should be understood that, space relative terms is intended to comprise the different azimuth in use or operation except the described in the drawings orientation of device.Such as, " in other devices or structure below " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can comprise " in ... top " and " in ... below " two kinds of orientation.This device also can other different modes location (90-degree rotation or be in other orientation), and relatively describe space used here and make respective explanations.
From background technology, existing solar module adopts glass as front end encapsulating material, but the weight of glass is comparatively large, does not meet market to the light-weighted requirement of photovoltaic products, and more crisp, the as easy as rolling off a log fragmentation of glass, for the transport of later product, installation and safeguard all there is inconvenience; In addition, some are had to the assembly of special shape requirement, the hard feature of its quality of glass is not easy to meet flexible requirement.
The present inventor studies for the problems referred to above, proposes to adopt composite membrane to substitute glass as front end encapsulating material.As described in Figure 1, this composite membrane comprises: aqueous vapor separation layer 10; Tack coat 20, is covered on two apparent surfaces of aqueous vapor separation layer 10; Weather-proof functional layer 30, is covered on the surface of tack coat 20 away from aqueous vapor separation layer 10.
The present invention adopts composite membrane to substitute glass conventional at present using the front end encapsulating material as solar module, and comprise aqueous vapor separation layer 10, tack coat 20 and weather-proof functional layer 30 due to this composite membrane, thus make this composite membrane while taking into account high light transmission rate, ensure that its weather resistance, resistance to UV aging and block-water performance out of doors, and greatly reduce the Unit Weight of solar module, make solar module weight lighter, transport and easier for installation.
In above-mentioned composite membrane, weather-proof functional layer 30 plays the function of protection each functional layer and solar module below, and this weather-proof functional layer 30 has higher weather resistance and resistance to UV aging, has certain mechanical strength, can withstand dust storm and hail.Tack coat 20 plays the effect of the weather-proof functional layer 30 of bonding and aqueous vapor separation layer 10.Aqueous vapor separation layer 10 mainly plays and intercepts steam and invade effect in assembly, and has higher electrical insulation capability, and has certain mechanical strength.
Preferably, tack coat 20 and weather-proof functional layer 30 are all symmetrical arranged along aqueous vapor separation layer 10.That is, the structure of composite membrane all has the symmetry of height in size and material, can resist physical impact and the thermal shock of some strength, and can anti-deformation.Functional layer material different in its structure can play weather resistance, water vapor rejection performance and resistance to UV aging preferably, while guarantee light transmission rate, well serves the function replacing glass.
In a preferred embodiment, aqueous vapor separation layer 10 comprises transparent organic film and is arranged at the transparent inorganic oxide layer on two apparent surfaces of organic transparent film layer.Wherein, transparent organic film can be PET film or PEN film etc.; The material of transparent inorganic oxide layer can be silicon dioxide, titanium oxide, zinc oxide or aluminium oxide etc.
The thickness of above-mentioned transparent organic film and transparent inorganic oxide layer can set according to the actual requirements.Preferably, the thickness of transparent organic film is 20 ~ 188 μm; The thickness being positioned at the transparent inorganic oxide layer of organic transparent film layer either side is 10 ~ 200nm.
Above-mentioned tack coat 20 can be pressure sensitive adhesive tape.Wherein, the composition of pressure sensitive adhesive tape can be polyacrylic binding agent, polyurethanes binding agent, epoxies binding agent or polyesters binding agent.The thickness of pressure sensitive adhesive tape is preferably between 30 ~ 80 μm.Above-mentioned weather-proof functional layer 30 can be fluoro-containing copolymer film, and the thickness of weather-proof functional layer 30 is preferably between 50 ~ 100 μm.
According to a further aspect in the invention, provide a kind of preparation method of above-mentioned composite membrane, this preparation method comprises the following steps: prepare aqueous vapor separation layer 10 and weather-proof function individual layer respectively; A surface of weather-proof function individual layer is formed bonding individual layer, and weather-proof function individual layer and bonding individual layer form functional unit layer; Overlaying function elementary layer on two apparent surfaces of aqueous vapor separation layer 10 respectively, and bonding individual layer fits on the surface of aqueous vapor separation layer 10, the bonding individual layer being positioned at the both sides of aqueous vapor separation layer 10 forms tack coat 20, and the weather-proof function individual layer being positioned at the both sides of aqueous vapor separation layer 10 forms weather-proof functional layer 30.
Wherein, the step preparing aqueous vapor separation layer 10 can comprise: carry out corona treatment to two apparent surfaces of transparent organic film; On two apparent surfaces of the transparent organic film after corona treatment, deposition forms transparent inorganic oxide layer, and transparent organic film and transparent inorganic oxide layer form aqueous vapor separation layer 10.
Particularly, the step that a surface of weather-proof function individual layer is formed bonding individual layer comprises: carry out corona treatment to a surface of weather-proof function individual layer, forms corona surface; Corona surface is formed bonding individual layer.
Present invention also offers a kind of solar module, this solar module comprises composite membrane provided by the invention, backboard and the cell piece between this composite membrane and backboard.
Composite membrane provided by the invention and solar module is further illustrated below in conjunction with embodiment.
Composite membrane provided by the invention is prepared by following steps:
(1) preparation of aqueous vapor separation layer: choose PET or PEN film, its transmitance is 90.0% ~ 91.0%, and thickness is at 20 ~ 188 μm; Two-sided corona treatment is carried out to improve the adhesive force on its surface to this PET film or PEN film; PET film corona treatment crossed or PEN film are placed in sputtering or PECVD chamber, lower surface deposits the transparent inorganic oxide layer of a layer thickness between 10-200nm thereon, and this transparent inorganic oxide comprises silicon dioxide, titanium oxide, zinc oxide or aluminium oxide; PET film after having deposited or PEN film utilize Mocon method to test the moisture-vapor transmission obtained to be less than 1.0 × 10-1g/m2day, and test condition is: temperature 40 DEG C, and humidity is 90%RH.
(2) preparation of weather-proof functional layer: choose certain thickness fluoro-containing copolymer film (comprising ETFE, ECTFE, PVDF, PTFE, FEP or PVF), THICKNESS CONTROL is between 50 ~ 100 μm, one side corona treatment is carried out to it, to improve the adhesive force in this face.
(3) fluoro-containing copolymer film corona treatment crossed is fitted one deck pressure sensitive adhesive tape on its corona surface, and the composition of this pressure sensitive adhesive tape is polyacrylic binding agent, polyurethanes binding agent, epoxies binding agent or polyesters binding agent, the adhesive layer thickness that this adhesive tape is formed is between 30 ~ 80 μm.
(4) the fluoro-containing copolymer film Double-face adhesive of laminating pressure sensitive adhesive tape is combined in two surfaces up and down of barriers function layer, the final composite membrane formed as shown in Figure 1.
This composite membrane is carried out the environmental testing of being correlated with, the instructions for use of photovoltaic module can be met with the optical property and mechanical property of testing this composite membrane.
(1) cold shock testing: carry out 200 circulations from-40 DEG C to 85 DEG C, single circulation timei is 30 minutes, test rear composite membrane outward appearance without significant change, non-wrinkled, stain, demoulding, layering, obviously scuffing and salient point, color indifference; The optical transmittance of 400nm-1100nm wave band drops to 90.66% from 90.87%; Interlaminar strength reaches 5.11N/cm.
(2) humid heat test: place 1000h be the environment of 85 at humidity and temperature under, has tested rear composite membrane outward appearance without significant change, non-wrinkled, stain, demoulding, layering, obviously to scratch and salient point, color indifference; The optical transmittance of 400nm-1100nm wave band drops to 90.10% from 90.87%; Interlaminar strength reaches 4.89N/cm.
(3) anti-ultraviolet ageing test: be 185W/m2 at irradiance, temperature is place 82 hours under the condition of 60 DEG C, total accumulation irradiation reaches 15KW, test rear composite membrane outward appearance without significant change, non-wrinkled, stain, demoulding, layering, obviously to scratch and salient point, color indifference; The optical transmittance of 400nm-1100nm wave band drops to 89.59% from 90.87%; Interlaminar strength reaches 4.77N/cm.
(4) heat resistance ageing test: 85 DEG C, 85%RH, to-40 DEG C, circulates 10 times, has tested rear composite membrane outward appearance without significant change, non-wrinkled, stain, demoulding, layering, obviously to scratch and salient point, color indifference; The optical transmittance of 400nm-1100nm wave band drops to 90% from 90.87%; Interlaminar strength reaches 5.01N/cm.
As can be seen from above test result, this composite membrane can replace glass as the front end encapsulating material of crystal silicon solar batteries well.
As can be seen from the above embodiments, the above-mentioned example of the present invention achieves following technique effect: the present invention adopts composite membrane to substitute glass conventional at present using the front end encapsulating material as solar module, and comprise aqueous vapor separation layer due to this composite membrane, tack coat and weather-proof functional layer, thus make this composite membrane while taking into account high light transmission rate, ensure that its weather resistance out of doors, resistance to UV aging and block-water performance, and greatly reduce the Unit Weight of solar module, make solar module weight lighter, transport and easier for installation.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a composite membrane, is characterized in that, described composite membrane comprises:
Aqueous vapor separation layer (10);
Tack coat (20), is covered on two apparent surfaces of described aqueous vapor separation layer (10);
Weather-proof functional layer (30), is covered on the surface of described tack coat (20) away from described aqueous vapor separation layer (10).
2. composite membrane according to claim 1, is characterized in that, described aqueous vapor separation layer (10) comprises transparent organic film and is arranged at the transparent inorganic oxide layer on two apparent surfaces of described organic transparent film layer.
3. composite membrane according to claim 2, is characterized in that, described transparent organic film is PET film or PEN film.
4. composite membrane according to claim 2, is characterized in that, the material of described transparent inorganic oxide layer is silicon dioxide, titanium oxide, zinc oxide or aluminium oxide.
5. composite membrane according to claim 2, is characterized in that, the thickness of described transparent organic film is 20 ~ 188 μm; The thickness being positioned at the described transparent inorganic oxide layer of described organic transparent film layer either side is 10 ~ 200nm.
6. composite membrane according to claim 1, is characterized in that, described tack coat (20) is pressure sensitive adhesive tape.
7. composite membrane according to claim 6, is characterized in that, the composition of described pressure sensitive adhesive tape is polyacrylic binding agent, polyurethanes binding agent, epoxies binding agent or polyesters binding agent.
8. composite membrane according to claim 6, is characterized in that, the thickness of described pressure sensitive adhesive tape is between 30 ~ 80 μm.
9. composite membrane according to claim 1, is characterized in that, described weather-proof functional layer (30) is fluoro-containing copolymer film, and the thickness of described weather-proof functional layer (30) is between 50 ~ 100 μm.
10. composite membrane according to claim 1, is characterized in that, described tack coat (20) and described weather-proof functional layer (30) are all symmetrical arranged along described aqueous vapor separation layer (10).
The preparation method of the composite membrane according to any one of 11. 1 kinds of claims 1 to 10, is characterized in that, described preparation method comprises the following steps:
Prepare aqueous vapor separation layer (10) and weather-proof function individual layer respectively;
A surface of described weather-proof function individual layer is formed bonding individual layer, and described weather-proof function individual layer and bonding individual layer form functional unit layer;
Respectively at the described functional unit layer of the upper superposition of two apparent surfaces of described aqueous vapor separation layer (10), and described bonding individual layer fits on the surface of described aqueous vapor separation layer (10), the described bonding individual layer being positioned at the both sides of described aqueous vapor separation layer (10) forms described tack coat (20), and the weather-proof function individual layer being positioned at the both sides of described aqueous vapor separation layer (10) forms described weather-proof functional layer (30).
12. preparation methods according to claim 11, is characterized in that, the step preparing described aqueous vapor separation layer (10) comprises:
Corona treatment is carried out to two apparent surfaces of transparent organic film;
On two apparent surfaces of the transparent organic film after described corona treatment, deposition forms transparent inorganic oxide layer, and described transparent organic film and described transparent inorganic oxide layer form described aqueous vapor separation layer (10).
13. preparation methods according to claim 11, is characterized in that, the step that a surface of described weather-proof function individual layer is formed described bonding individual layer comprises:
Corona treatment is carried out to a surface of described weather-proof function individual layer, forms corona surface;
Described corona surface is formed described bonding individual layer.
14. 1 kinds of solar modules, is characterized in that, described solar module comprises composite membrane, backboard and the cell piece between described composite membrane and described backboard according to any one of claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275179.6A CN104992995A (en) | 2015-05-26 | 2015-05-26 | Composite membrane, preparation method thereof and solar cell assembly |
Applications Claiming Priority (1)
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| CN108682704A (en) * | 2018-05-25 | 2018-10-19 | 北京汉能光伏投资有限公司 | Solar cell package plate and its preparation process, solar cell |
| CN109401059A (en) * | 2018-11-14 | 2019-03-01 | 安徽兆拓新能源科技有限公司 | A kind of solar cell package film and preparation method thereof |
| CN109449231A (en) * | 2018-09-11 | 2019-03-08 | 广东圣帕新材料股份有限公司 | A kind of high light transmission composite material and preparation method |
| CN110544728A (en) * | 2019-09-06 | 2019-12-06 | 泰州中来光电科技有限公司 | Light flexible photovoltaic module |
| CN110776837A (en) * | 2019-08-15 | 2020-02-11 | 广东东溢新材料科技有限公司 | Light-transmitting barrier composite film and preparation method thereof |
| CN110829957A (en) * | 2018-08-07 | 2020-02-21 | 汉能移动能源控股集团有限公司 | Solar power generation tile and manufacturing method thereof |
| CN112447870A (en) * | 2019-08-16 | 2021-03-05 | 福建金石能源有限公司 | High-waterproof packaging material for solar cell |
| CN115179631A (en) * | 2022-09-08 | 2022-10-14 | 江苏中天科技股份有限公司 | Packaging material and photovoltaic module |
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| CN108682704A (en) * | 2018-05-25 | 2018-10-19 | 北京汉能光伏投资有限公司 | Solar cell package plate and its preparation process, solar cell |
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| CN112447870A (en) * | 2019-08-16 | 2021-03-05 | 福建金石能源有限公司 | High-waterproof packaging material for solar cell |
| CN110544728A (en) * | 2019-09-06 | 2019-12-06 | 泰州中来光电科技有限公司 | Light flexible photovoltaic module |
| CN115179631A (en) * | 2022-09-08 | 2022-10-14 | 江苏中天科技股份有限公司 | Packaging material and photovoltaic module |
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