CN102754219A - Film for solar cell rear surface sealing sheet - Google Patents
Film for solar cell rear surface sealing sheet Download PDFInfo
- Publication number
- CN102754219A CN102754219A CN2011800085428A CN201180008542A CN102754219A CN 102754219 A CN102754219 A CN 102754219A CN 2011800085428 A CN2011800085428 A CN 2011800085428A CN 201180008542 A CN201180008542 A CN 201180008542A CN 102754219 A CN102754219 A CN 102754219A
- Authority
- CN
- China
- Prior art keywords
- film
- solar cell
- rear surface
- resin
- sheet material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- WNMORWGTPVWAIB-UHFFFAOYSA-N ethenyl 2-methylpropanoate Chemical class CC(C)C(=O)OC=C WNMORWGTPVWAIB-UHFFFAOYSA-N 0.000 description 1
- ZLHVSEPPILCZHH-UHFFFAOYSA-N ethenyl 4-tert-butylbenzoate Chemical class CC(C)(C)C1=CC=C(C(=O)OC=C)C=C1 ZLHVSEPPILCZHH-UHFFFAOYSA-N 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical class CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
- GLVVKKSPKXTQRB-UHFFFAOYSA-N ethenyl dodecanoate Chemical class CCCCCCCCCCCC(=O)OC=C GLVVKKSPKXTQRB-UHFFFAOYSA-N 0.000 description 1
- AFSIMBWBBOJPJG-UHFFFAOYSA-N ethenyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC=C AFSIMBWBBOJPJG-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical compound CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- DUDXQIXWPJMPRQ-UHFFFAOYSA-N isocyanatomethylcyclohexane Chemical compound O=C=NCC1CCCCC1 DUDXQIXWPJMPRQ-UHFFFAOYSA-N 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical class CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- KOZCZZVUFDCZGG-UHFFFAOYSA-N vinyl benzoate Chemical class C=COC(=O)C1=CC=CC=C1 KOZCZZVUFDCZGG-UHFFFAOYSA-N 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/21—Paper; Textile fabrics
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
-
- 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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/203—Adhesives in the form of films or foils characterised by their carriers characterised by the structure of the release feature on the carrier layer
-
- 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
-
- 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
- H01L31/049—Protective back sheets
-
- 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)
- 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)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Photovoltaic Devices (AREA)
- Laminated Bodies (AREA)
Abstract
Disclosed is a film for solar cell rear surface sealing sheets, in which a resin layer comprising a fluororesin, color pigment, and melamine cyanurate has been layered upon at least one side of a base film, thereby providing a film for solar cell rear surface sealing sheets that has excellent resistance to light and resistance to heat and humidity.
Description
Technical field
The present invention relates to and to use film by withstand prolonged sealing rear surface of solar cell sheet material that under harsh outdoor environment, use, that have light resistance, humidity resistance.In addition, the present invention relates to use sealing rear surface of solar cell sheet material and the solar module of sealing rear surface of solar cell sheet material of the present invention with film.
Background technology
In recent years, fears are entertained that with oil, coal is that the fossil fuel of representative is exhausted, is used to guarantee that the exploitation of the alternative energy source that obtained by above-mentioned fossil fuel becomes the task of top priority.Therefore, the whole bag of tricks such as nuclear electric power generation, hydroelectric power generation, wind power generation, solar power generation are studied, and be committed to practical application.Can solar energy be converted into the solar power generation of electric energy, as semipermanent and non-harmful new forms of energy gradually by practicability.The cost performance of solar power generation aspect actual use improves more obvious, as a kind of clean energy resource, enjoys expectation.
The solar cell that uses in the solar power generation constitutes the core that solar energy is converted into the solar power system of electric energy.Solar cell is formed by semiconductors such as silicon.For solar cell, the mode of solar cell device with series, parallel connected up, for protection component, carried out various assemblings in long-time about 20 years, make its blocking.The unit that to pack in the above-mentioned assembly is called solar module.Solar module forms following structure: the face that will contact sunlight covers with glass, uses the packing material landfill gap that is formed by thermoplastic resin, protects the back side with seal stock.As above-mentioned packing material, the reason high from the transparency, that moisture-proof is also excellent is used ethane-acetic acid ethyenyl ester copolymer resins (below be called the EVA resin) mostly.On the other hand; For the sealing backside sheet material, require mechanical strength, weatherability, thermal endurance, resistance to water, chemical resistance, light reflective, electrical insulating property, water vapour isolation, with the EVA resin be the packing material of representative Thermoadhesive, design, with outermost terminal board the characteristic with the resinoid adaptation of organosilicon is installed.In addition, for the sealing backside sheet material,, require light resistance excellent owing to be exposed to ultraviolet ray down.
Sealing backside sheet material as use is all the time used film, can enumerate white pvf film (Dupont (strain), trade name: Tedlar (registered trade mark)).Sealing backside sheet material with the film formed laminate structures of pvf film clamping polyester is widely used in the solar cell purposes.In addition, also open and put into having used a kind of light-resistant film, said light-resistant film on the one or both sides of polyester film, to form the acrylic resin that is combined with ultra-violet absorber, light stabilizer film (patent documentation 1).In addition, also open and put into having used following proposal: mixing ultra-violet absorber or light stabilizer in polyester film (patent documentation 2).In addition, also put into having used a kind of white films, said white films is through Chinese white system films (patent documentation 3) such as mixing titanium oxide in the layer of polyester film etc.From the little viewpoint consideration of the variation of film outward appearance along with being exposed to ultraviolet ray, known above-mentioned white films has light resistance.
Patent documentation 1: TOHKEMY 2005-015557 communique
Patent documentation 2: TOHKEMY 2009-188105 communique
Patent documentation 3: japanese kokai publication hei 11-291432 communique
Summary of the invention
Yet; Though above-mentioned pvf film is the excellent film of weatherability; A little less than the mechanical strength, softening under the effect of the heat of 140～150 ℃ the hot pressing that when the manufacturing solar cells assembly, applies sometimes, the protrusion of solar cell device electrode part connects encapsulant layer but then.And then, owing to it costs an arm and a leg, so becoming obstacle aspect the low price of solar module.In addition, as being the Coloured film of representative with white etc., in order to improve the design of sealing backside sheet material, must with expensive Coloured film combination.
In addition, for the polyester film of patent documentation 1 and patent documentation 2, add under the wet environment or along with ultraviolet ray is penetrated at high temperature sometimes, ultra-violet absorber or light stabilizer are being filmed or the film surface is oozed out.Therefore, not only the closing force etc. on wettability, surface changes, and also is easy to produce the sunproof unfavorable condition that loses that showed originally.
In addition; White films for patent documentation 3; Consider from the point that the variation of the film outward appearance of following uv light exposure that caused by the absorbing properties of pigment composition is little, have ultra-violet resistance to a certain degree, but the resin of main material is not by fast lightization; Therefore, be that the membrane property of representative itself can reduce along with ultraviolet irradiation gradually for example with elongation at break etc.In addition, in recent years, carrying out actively about the exploitation of the long lifetime of solar module itself, is that the center solar module is set on the ground tiltedly that the situation of upright placed type increases simultaneously with Europe.Under above-mentioned situation, long term exposure is under the ultraviolet ray of ground surface reflection.Therefore; Have under the situation of outer layer surface that stable sunproof layer is not formed at the sealing backside sheet material for a long time; Sealing backside sheet material xanthochromia not only; Destroy the aesthetic feeling of film outward appearance, and in extreme case lower seal sheet material, also can crack etc., also worry sometimes to destroy the various characteristics that sheet materials such as electrical insulating property or water vapor barrier require
In order to solve above-mentioned problem, the present invention adopts following formation.That is, sealing rear surface of solar cell sheet material of the present invention has closed resin bed with film on the upper strata of one side at least of base material film, and said resin bed contains fluorine-type resin, coloring pigment and melamine cyanurate ester.
In addition, sealing rear surface of solar cell sheet material of the present invention comprises that sealing rear surface of solar cell sheet material of the present invention uses film.
In addition, solar module of the present invention comprises sealing rear surface of solar cell sheet material of the present invention and unit filler layer, and sealing rear surface of solar cell sheet material and unit filler layer are bonded to together.
According to the present invention, can obtain the excellent sealing rear surface of solar cell sheet material of light resistance and humidity resistance with film with use its sealing rear surface of solar cell sheet material.In addition, the sealing rear surface of solar cell sheet material that according to preferred version of the present invention, can obtain that anti-flammability is more excellent, adhesion and efflorescence is few is with film and use its sealing rear surface of solar cell sheet material.In addition, when using sealing rear surface of solar cell sheet material of the present invention, can obtain the solar module of excellent in te pins of durability.
Embodiment
Sealing rear surface of solar cell sheet material of the present invention closes the resin bed that contains fluorine-type resin, coloring pigment and melamine cyanurate ester with film through the upper strata of one side at least at base material film, can obtain than more excellent at present light resistance and humidity resistance.
[base material film]
The sealing rear surface of solar cell sheet material is with using various resin moldings as base material film in the film.Particularly, can enumerate PETG (PET) or PEN polyester resin films such as (PEN); Resin moldings such as Merlon, polymethyl methacrylate, polyacrylate, polypropylene, polyethylene; The resin molding that has mixed above-mentioned resin.Wherein, consider from the aspect of intensity, dimensional stability, excellent heat stability, the preferred polyester resin film, and then consider polyester resin films such as preferred especially PET or PEN from the aspect of cheapness.In addition, polyester resin also can be copolymer, as copolymer composition, for example can use diol components such as propane diols, diethylene glycol (DEG), neopentyl glycol, cyclohexanedimethanol; The dicarboxylic acids of M-phthalic acid, adipic acid, azelaic acid, decanedioic acid and ester thereof formation property derivative becomes to grade.And then, can also use the polyphenylene sulfide (PPS) that has high hydrolytic resistance, thermal endurance, has anti-flammability.In addition, also can use all the time as the sheet for sealing backside material use film with the fluorine class film of polyvinyl fluoride as representative.
Because the sealing rear surface of solar cell sheet material is excellent with the light resistance of film, thus in the sealing rear surface of solar cell sheet material constitutes, can be preferred for being directly exposed to atmosphere (humidity, temperature) or the ultraviolet that reflects from ground surface under outermost layer.From being used for being directly exposed to the outermost viewpoint consideration of atmosphere, the resin molding of preferred hydrolytic resistance excellence is as base material film.Usually polyester resin film contains the oligomer of the intermediateness that is in monomer and polymer about 1.5～2 quality % so that the so-called polymer that the monomer polycondensation forms is a raw material carries out film forming and obtain.The representative example of oligomer is a cyclic trimer, and the many film of its content is under the situation that long term exposure waits out of doors, and mechanical strength reduces, perhaps along with the carrying out of the hydrolysis that causes by rainwater etc., and generation be full of cracks, material breaks etc.With respect to this; In the hydrolytic resistance film; With the content of the cyclic trimer that utilizes the solid phase polymerization method polymerization to obtain be mylar below the 1.0 quality % as raw material, polyester resin film is carried out film forming, can suppress the hydrolysis under the hot and humid degree thus; And then, can obtain the also excellent film of thermal endurance and weatherability.Above-mentioned cyclic trimer Determination on content is for example obtained through following method: use the solution that in the 2ml o-chlorphenol, is dissolved with the 100mg polymer, measure through liquid chromatography, measure the content (quality %) with respect to resin quality thus.
Can in the scope of not destroying effect of the present invention, in base material film, add additives such as antistatic agent, ultra-violet absorber, stabilizer, oxidation inhibitor, plasticizer, lubricant, filler, coloring pigment as required.
The not special restriction of the thickness of base material film, but when considering the voltage-resistent characteristic, cost etc. of seal stock, preferably in the scope of 1～250 μ m.The lower limit of thickness more preferably is more than the 25 μ m.
In addition, in order to give the base material film water vapor barrier, also can use through vapour deposition method etc. and form the water vapour isolation film of one deck inorganic oxide layer at least." water vapour isolation film " among the present invention is meant that the water vapour permeability of measuring according to the described B method of JIS K7129 (version in 2000) is 5g/ (m
2Day) resin molding below.Reasons such as stability during based on the formation inorganic oxide layer and cost, above-mentioned thickness of resin film preferably in the scope of 1～100 μ m, more preferably in the scope of 5～50 μ m, is preferably about 10～30 μ m especially.
The film of preferred substrates film on biaxially oriented, stretching makes the thermal dimensional stability of base material film good.In addition, also can carry out for example discharge process such as corona discharge or plasma discharge to base material film as required, perhaps surface treatment such as acid treatment.
[resin bed]
The resin bed that closes with base material rete among the present invention contains (1) fluorine-type resin, (2) coloring pigment and (3) melamine cyanurate ester.Usually; As the sunproof method that improves resin bed; Organic type of ultra-violet absorber or mineral-type ultra-violet absorber are mixed with adhesive resin with the mode of independent or multiple mixing; And then,, use light stabilizer (HALS) simultaneously from the purpose that strengthens photostability based on the mechanism that makes through light activated free radical inactivation.But the resin bed that ultra-violet absorber or light stabilizer form is added in the back in adhesive resin, adds under the wet environment or along with ultraviolet ray is penetrated, ultra-violet absorber or light stabilizer are exuded to film coated surface from film at high temperature sometimes.Therefore, not only the closing force of wettability, film coated surface etc. changes, but also is easy to produce the unfavorable condition that the ultraviolet isolating performance that appeared originally disappears and so on.With respect to this, among the present invention, compare with mylar, olefine kind resin, acrylic resin etc., use the extremely excellent fluorine-type resin of light resistance as adhesive resin.Therefore, need not back interpolation ultra-violet absorber or light stabilizer in adhesive resin, can not produce the problems referred to above.In addition, because the anti-flammability of fluorine-type resin is also excellent, improve the effect of sealing rear surface of solar cell sheet material with the anti-flammability of film so also have.In addition,, preferably imported the fluorine-type resin of the functional group of curable, made it can in resin bed, import the proper crosslinking structure in order to improve with the closing force of base material film or to improve the thermal endurance of resin bed.Use the sealing rear surface of solar cell sheet material of sealing rear surface of solar cell sheet material with film, in solar module manufacturing process, owing to be exposed in the high-temperature process, resin bed requires thermal endurance.
As the functional group that fluorine-type resin is given curable, for example can enumerate hydroxyl, carboxyl, amino, glycidyl, silicyl, cyanate ester based, NCO etc., consider the easy property and the curing of resin manufacture simultaneously, suitably select.Wherein, consider that preferred hydroxyl, cyanic acid, silicyl are considered preferred especially hydroxyl from aspect and reactive good aspect that resin is easy to obtain from the aspect that solidification reactivity is good.Above-mentioned curable functional group is usually through making the monomer copolymerization that contains curable functional group that it is imported in the fluorine-type resin.
As the monomer that contains hydroxyl, can enumerate the vinyl ethers that for example 2-hydroxyethyl vinyl ethers, 3-hydroxypropyl vinyl ethers, 2-hydroxypropyl vinyl ethers, 2-hydroxy-2-methyl propyl vinyl ether, 4-hydroxybutyl vinyl ethers, 4-hydroxy-2-methyl butyl vinyl ether, 5-hydroxyl amyl group vinyl ethers, 6-hydroxyl hexyl vinyl ethers etc. contain hydroxyl; 2-hydroxyethyl allyl ether, 4-hydroxybutyl allyl ether, glycerine mono allyl ether etc. contain the allyl ether series of hydroxyl etc.Wherein, consider, preferably contain the vinyl ethers of hydroxyl, particularly 4-hydroxybutyl vinyl ethers, 2-hydroxyethyl vinyl ethers from the aspect that the curable of polymerisation reactivity, functional group is excellent.Contain the monomer of hydroxyl as other, can enumerate for example acrylic acid hydroxyalkyl acrylate of acrylic acid 2-hydroxy methacrylate, 2-hydroxyethyl methacrylate etc. (methyl) etc.
As the fluorine-type resin that has imported curable functional group, consider from the viewpoint of construction unit, can enumerate for example with the perfluoroolefine resinoid of perfluoroolefine unit as main body.As concrete example, homopolymers or TFE and hexafluoropropylene (HFP), the perfluor (alkyl vinyl ether) that can enumerate tetrafluoroethene (TFE) (PAVE) etc. copolymer and then, can also enumerate the copolymer of they and other monomers that can copolymerization etc.
As other monomers that can copolymerization, can enumerate for example vinyl esters of carboxylic acids classes such as vinyl-acetic ester, vinyl propionate base ester, butyric acid vinyl esters, isobutyric acid vinyl esters, neopentanoic acid vinyl esters, caproic acid vinyl esters, neodecanoic acid vinyl esters, laurate vinyl esters, vinyl stearate base ester, hexahydrobenzoid acid vinyl esters, benzoic acid vinyl esters, p-tert-butyl benzoic acid vinyl esters; Alkyl vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, butyl vinyl ether, cyclohexyl vinyl ether; Fluorine-free olefines such as ethene, propylene, n-butene, isobutene; Fluorine class monomers such as vinylidene (VdF), chlorotrifluoroethylene (CTFE), PVF (VF), fluorovinyl ether etc., but not only be defined in this.
Wherein, consider from the aspect that pigment-dispersing, weatherability, copolymerization property and chemical proofing are excellent, preferably with the TFE resinoid of TFE as main body.
As the concrete perfluoroolefine resinoid that contains curable functional group; Can enumerate the copolymer of TFE/ isobutene/hydroxybutyl vinyl ethers/other monomers for example, the copolymer of TFE/ neodecanoic acid vinyl esters/hydroxybutyl vinyl ethers/other monomers, the copolymer of TFE/VdF/ hydroxybutyl vinyl ethers/other monomers etc., the preferred especially TFE/ isobutene/copolymer of hydroxybutyl vinyl ethers/other monomers, the copolymer of TFE/ neodecanoic acid vinyl esters/hydroxybutyl vinyl ethers/other monomers etc.As the curable resin coating of TFE class, can enumerate the Zeffle GK series of the industry of Daikin for example (strain) system etc.
The thickness of resin bed is preferably 0.2～20 μ m.The lower limit of the thickness of resin bed more preferably more than the 5 μ m, is preferably more than the 8 μ m especially.The upper limit of the thickness of resin bed more preferably below the 15 μ m, is preferably below the 10 μ m especially.Utilize coating process to form under the situation of resin bed, the thickness of resin bed is during less than 0.2 μ m, is easy to produce the phenomenon that depression or film split and so on during coating, is difficult to form and films uniformly.Therefore, sometimes the closing force of base material film, particularly light resistance are not embodied fully.On the other hand, when the thickness of resin bed surpassed 20 μ m, light resistance embodied fully, but be restricted at coating method, production cost uprises, be easy to produce the adhesion and follow its aspect such as peel off of filming to exist and worry of filming with conveying roller.
Utilize coating process to form the solvent of the coating fluid of resin bed as being used to, can enumerate for example toluene, xylenes, ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK), oxolane, dimethyl formamide, dimethylacetylamide, methyl alcohol, ethanol and water etc.As the proterties of coating fluid, can be in emulsion-type and the lysotype any.
The method that on base material film, forms resin bed should limit not especially, can utilize known coating process.As coating process, can adopt the whole bag of tricks, the method that can utilize roller rubbing method, dip coated method, excellent rubbing method, mould rubbing method and gravure roll rubbing method etc. and their are made up.Wherein, because the gravure roll rubbing method increases the stability of resin bed, institute thinks preferable methods.
[coloring pigment]
From (1) to resin bed carry out painted, (2) keep the purpose that anti-flammability is improved in tone (not fading), (3) ultraviolet ray and/or visible light shielding, (4), uses the coloring pigment that uses among the present invention.As used for solar batteries sealing backside sheet material; Consider that from the viewpoint of light reflective and design the sheet material of white is a main flow, but compare for the above-mentioned sheet material of white with the gap of observing in recent years between generating element; From the excellent reason of design, the needs of black sheet material are also enlarged.In addition, because above-mentioned pigment itself also absorbs and/or reflect the light of specific wavelength, so through carrying out paintedly can obtaining to protect base material film to avoid the effect of ultraviolet ray and/or visible light destruction.In addition, also has the effect that to hide the layouts such as electrical wiring pattern in the solar module.
As coloring pigment, can use various coloring pigments such as inorganic pigment, organic pigment.About the white or the black of present practicality, consider from the viewpoint of property commonly used, price, color developing and ultra-violet resistance, as Chinese white, preferred titanium oxide, as black pigment, preferred carbon black.Particularly consider that from the viewpoint of colour developing about titanium oxide, its number average bead diameter is preferably 0.1～1.0 μ m.Considering from the viewpoint of dispersiveness fluorine-type resin and cost, more preferably is 0.2～0.5 μ m.Likewise about carbon black, its number average bead diameter is preferably 0.01～0.5 μ m.Considering from the viewpoint of dispersed and cost, more preferably is 0.02～0.1 μ m.
About the content of coloring pigment, can suitably adjust according to the design of the tone of wanting to develop the color.But, when the content of coloring pigment is very few, can't obtain the excellent tone appearance of design sometimes, lack ultraviolet ray and/or visible light shielding properties, perhaps long term exposure base material film generation deterioration, xanthochromia when outdoor.In addition, because the resin quantitative change is many, so possibly stick together.When the content of coloring pigment was too much on the contrary, have following worry: cost uprised, and was improved significantly by the hardness of resin bed to cause being easy to produce with base material and the bonding closing force with silicones of terminal board bad, perhaps produced efflorescence etc. at resin layer surface.In addition, owing to amount of resin tails off, so the closing force of resin bed and base material film possibly reduce.Among the present invention,,, give anti-flammability thus through using coloring pigment, making its content how to a certain degree in order to improve the anti-flammability of sealing rear surface of solar cell sheet material with film.
For the foregoing reasons, whole with respect to resin bed, the content of coloring pigment is preferably 30～80 quality %.The lower limit of content more preferably is more than the 50 quality %, is preferably especially more than the 65 quality %.The upper limit of content more preferably is below the 75 quality %, is preferably especially below the 70 quality %.
[melamine cyanurate ester]
Improve the anti-adhesive of resin bed, the purpose that anti-flammability is improved in (2) from (1), use the melamine cyanurate ester that uses among the present invention.The melamine cyanurate ester is the fire retardant of non-halogen, also can be used as lubricant and uses.Among the present invention, through in fluorine-type resin, adding the melamine cyanurate ester, the effect of the adhesion that produces when having the anti-flammability that not only can improve resin bed but also can reduce the use fluorine-type resin.Through in fluorine-type resin, containing the melamine cyanurate ester, infer as follows as the mechanism that reduces adhesion.Be coated on the base material film resin bed and when carrying out heat drying, the fluorine-type resin that melamine cyanurate ester and polarity are low in the resin bed is separated, low-molecular-weight melamine cyanurate ester moves to the opposition side of base material film.The result thinks owing on resin layer surface, containing a large amount of melamine cyanurate esters, so reduce adhesion.
Whole with respect to resin bed, the content of melamine cyanurate ester is preferably 1～30 quality %.The lower limit of content more preferably is more than the 3 quality %, is preferably especially more than the 5 quality %.The upper limit of content is preferably below the 20 quality %, is preferably especially below the 10 quality %.Content can't obtain the effect of sufficient of melamine cyanurate ester during less than 1 quality % sometimes.When content surpassed 30 quality %, cost uprised sometimes, and the melamine cyanurate ester oozes out in film coated surface, and perhaps the required solvent resistance of resin bed reduces.
[crosslinking agent]
In addition, as stated,, also can cooperate crosslinking agent in order to improve the characteristic of resin bed, said crosslinking agent have can with the functional group of the functional group reactions of fluorine-type resin.
And when using crosslinking agent, can obtain following effect: the closing force between base material film and the resin bed improves, or along with the importing of cross-linked structure, the solvent resistance of resin bed, thermal endurance improve.When particularly being positioned at outermost mode and designing the sealing rear surface of solar cell sheet material with the resin bed among the present invention; In solar module manufacturing process; Particularly close in the operation (unit filling work procedure) at glassy layer; Resin bed is exposed under the highest about the 150 ℃ high temperature, makes its heat treatment of experience more than 30 minutes under the situation for a long time, so the special demands thermal endurance.In addition, in the manufacturing process of solar module, behind the installation component,, comprise the wiping operation that utilizes ethanol or other organic solvents, therefore require solvent resistance as cleaning operation.From improving above-mentioned adaptation, solvent resistance, the consideration of stable on heating viewpoint, preferably cooperate crosslinking agent.
As stated because as importing to the preferred hydroxyl of functional group in the fluorine-type resin, so preferred use can with the crosslinking agent of above-mentioned hydroxyl reaction.As above-mentioned crosslinking agent, preferably use the prescription of polyisocyanates resinoid as the generation of curing agent, promotion ammonia ester bond (cross-linked structure).As the polyisocyanates resinoid that uses with the form of crosslinking agent; Can enumerate fragrant same clan polyisocyanates, aromatic-aliphatic class polyisocyanates, alicyclic ring same clan polyisocyanates and aliphatic category polyisocyanates etc., be with the resin of the various diisocyanate cpds shown in following as raw material.They can use separately, perhaps also can make up more than 2 kinds and use.
As the vulcabond of the raw material that becomes aromatic polyisocyanate, for example can enumerate m-benzene diisocyanate or PPDI, 4,4 '-diphenyl diisocyanate, 1; 5-naphthalene diisocyanate (NDI), 4,4 ', 2,4 '-or 2; 2 '-methyl diphenylene diisocyanate (MDI), 2; 4-or 2,6-toluene di-isocyanate(TDI) (TDI), and 4,4 '-diphenyl ether vulcabond etc.
As the vulcabond of the raw material that becomes the aromatic-aliphatic polyisocyanates, for example can enumerate 1,3-or 1,4-xylylene diisocyanate (XDI), and 1,3-or 1,4-tetramethyl xylylene diisocyanate (TMXDI) etc.
As the vulcabond of the raw material that becomes alicyclic ring same clan polyisocyanates, for example can enumerate 1,4-cyclohexane diisocyanate, 1; 3-cyclohexane diisocyanate, 3-isocyanatomethyl-3,5,5-3-methyl cyclohexanol based isocyanate (IPDI: IPDI), 4; 4 ', 2,4 '-or 2,2 '-dicyclohexyl methyl hydride diisocyanate (hydrogenation MDI), methyl-2; 4-cyclohexane diisocyanate, methyl-2; 6-cyclohexane diisocyanate, and 1,3-or 1,4-two (isocyanatomethyl) cyclohexane (hydrogenation XDI) etc.
As the vulcabond of the raw material that becomes the aliphatic category polyisocyanates, for example can enumerate 1,3-third vulcabond, 1,4-fourth vulcabond, 1; Hexamethylene-diisocyanate (HDI), 1,5-penta vulcabond, 1,2-third vulcabond, 1,2-, 2; 3-or 1,3-fourth vulcabond, and 2,4,4-or 2; 2,4-trimethyl-1, hexamethylene-diisocyanate etc.
As the raw material of polyisocyanates, can make up multiple above-mentioned vulcabond and use, also can be used as modification bodies such as biuret modified body, urate modification body and use.The resin that in resin matrix, contains the aromatic rings of the optical absorption band with ultraviolet range along with ultraviolet irradiation, is prone to xanthochromia takes place, and therefore, preferably uses alicyclic ring same clan polyisocyanates and/or aliphatic category polyisocyanates as curing agent.And then, consider the alicyclic polyisocyanates that preferably uses resin bed further to solidify from the viewpoint of solvent resistance.In addition, preferred 1 from considering with the viewpoints such as carrying out property, the degree of cross linking, thermal endurance, ultra-violet resistance that are prone to of the cross-linking reaction of fluorine-type resin, the urate modification body of hexamethylene-diisocyanate.
[other additives]
And then; Only otherwise destroy its characteristic, also can in containing the resin bed of fluorine-type resin, add heat stabilizer, oxidation inhibitor, hardening agent, deterioration preventing agent, weather agent, fire retardant, plasticizer, release agent, lubricant, crosslinking coagent, pigment dispersing agent, antifoaming agent, levelling agent, ultra-violet absorber, light stabilizer, tackifier, driving fit modifying agent, delustering agent etc.
As the heat stabilizer that can use, oxidation inhibitor and deterioration preventing agent, can enumerate for example Hinered phenols, phosphorus compound, hindered amines, sulphur compound, copper compound, alkali-metal halide or their mixture.
As the hardening agent that can use, can enumerate for example clay, talcum, calcium carbonate, zinc carbonate, wollastonite, silicon dioxide, aluminium oxide, magnesia, calcium silicates, sodium aluminate, sodium silicoaluminate, magnesium silicate, glass marble, carbon black, zinc oxide, zeolite, hydrotalcite, metallic fiber, metal whisker, ceramic whisker, potassium titanate crystal whisker, boron nitride, graphite, glass fiber, carbon fiber etc.
As the crosslinking coagent that can use, can use the crosslinking coagent of present known tin class, other metal species, organic acid, amino class.
[adhesive phase]
Through the sealing rear surface of solar cell sheet material is closed with film and other resin film layers, can obtain the sealing rear surface of solar cell sheet material, as rete is merged the method that is processed into sheet, can adopt known dry type layer legal.Utilize in the applying of the legal resin molding of layer; Can use known adhesive for laminate; Said adhesive for laminate with polyether-polyurethane class, polyester-polyurethane class, polyesters, gather epoxylite etc. as host, with the polyisocyanates resinoid as curing agent.But; Need state in the use in the adhesive phase that adhesive forms and can not produce following unfavorable condition; That is, thus because of long-term outdoor application causes layering (Delamination) that bonding strength generation deterioration causes etc., produce the xanthochromia that is associated with the light reflectance reduction etc.In addition, as the thickness of adhesive phase, preferably in the scope of 1～5 μ m.During less than 1 μ m, be difficult to obtain sufficient bonding strength sometimes.On the other hand, when surpassing 5 μ m, the speed of adhesive coating does not raise, and that carries out in order to present bonding force (promoting the cross-linking reaction between host and the curing agent) agingly needs the long period, and the increase of adhesive use amount etc., so production cost improves sometimes.
The material that uses in the formation as adhesive phase can use known dry type adhesive for laminate.Usually the dry type adhesive for laminate uses with retarder thinner host and 2 kinds of resin dilutions of crosslinking agent is prepared the material that obtains; But preferred following prescription; Promptly; Use contains the polymer of NCO as crosslinking agent, and the presentation speed of reactive height, its reaction speed and the initial stage closing force of this polymer and activity hydroxy is fast.Except above-mentioned advantage, can also form and the bonding strength height of base material film and high-temperature stability, the also excellent resin of binding property layer of long durability of its bonding strength.As the host resin that uses with the above-mentioned combination of polymers that contains NCO; Can enumerate the polyurethanes resin or the epoxylite of polyethers, polyesters, polyalcohols etc., can come suitably to select to use according to characteristic, the processing conditions adaptability of detail requirement.In addition, it is generally acknowledged the structure according to the sealing rear surface of solar cell sheet material, ultraviolet ray also can arrive above-mentioned adhesive phase, causes the light deterioration of resin.Consider that from above-mentioned viewpoint the resin that uses in the formation as adhesive phase does not preferably contain aromatic rings or poor aliphatic category resin or alicyclic resinoid.
[sealing rear surface of solar cell sheet material]
To using the sealing rear surface of solar cell sheet material to describe with the sealing rear surface of solar cell sheet material of film.The sealing rear surface of solar cell sheet material requires with water vapour isolation, light reflective, the fast light durability of long-term moisture-proof heat, unit filler closing force, electrical insulating property etc. are the multifrequency nature of representative in pairs.At present, in order to satisfy the characteristic of above-mentioned requirements,, the various sheet material design of each company (layer closes design) have been formed with the combination of process technologies such as various functional membranes and vapor deposition, wet type coating according to the idea that function is cut apart.
Film, white films, the film with inorganic oxide vapor deposition layer through will having hydrolytic resistance, the different rete with base material film more than a kind that has in the film with the Thermoadhesive of EVA are combined in sealing rear surface of solar cell sheet material of the present invention with on the film, can be met the sealing rear surface of solar cell sheet material of various requirement characteristic.Preferred especially following proposal: in the part of the sealing rear surface of solar cell sheet material outside becoming when being installed on the solar module, the film that will have hydrolytic resistance closes the sealing rear surface of solar cell sheet material on this base material film upper strata and uses film as base material film.Through the film that configuration has hydrolytic resistance, can protect to be positioned at more to avoid hydrolysis near the layer (adhesive phase, rete etc.) of internal layer side than it.In addition, because the resin bed with ultraviolet ray and/or visible light barrier property and anti-flammability is positioned at the outermost layer side, thus can more avoid ultraviolet ray and/or visible light infringement by this resin bed of protective ratio near the layer of inboard, and then, prolong burning in the time of can reducing fire.
On the other hand, preferably with white films, have inorganic oxide vapor deposition layer film, have the rete more than a kind in the film with the Thermoadhesive of EVA and be combined on the opposing face of resin laminated face of base material film.Layer is given light reflective when closing white films, when layer closes the film with inorganic oxide vapor deposition layer, gives the water vapour isolation, in addition, when layer closes the film that has with the Thermoadhesive of EVA, gives paired unit encapsulant layer closing force.As the film that has with the Thermoadhesive of EVA, can enumerate olefines films such as EVA film, polyethylene film etc.In addition, be laminated in sealing rear surface of solar cell sheet material of the present invention and differ with the film on the film and be decided to be 1 layer, can make up each suitable member film according to the characteristic of wanting to give, design sealing rear surface of solar cell sheet material gets final product.
In addition, in the structure of sealing rear surface of solar cell sheet material, as long as, can on random layer, be formed for giving functional vapor deposition layer, sputtering layer, wet type coating layer etc. for the position on the resin bed in the present invention.
As the example of sealing rear surface of solar cell sheet material, can enumerate following method with the autofrettage of film.As base material film, prepare hydrolytic resistance PETG film Lumirror (registered trade mark) X10S of for example eastern beautiful (strain) system.Then, prepare paint, said paint will use ball mill disperse to have concocted the host of fluorine-type resin, coloring pigment and melamine cyanurate ester, as the urate type 1 of crosslinking agent, the hexamethylene-diisocyanate resin, reach solvent and obtain.Through utilizing the gravure roll rubbing method that above-mentioned paint is coated on the base material film, can obtain the sealing rear surface of solar cell sheet material and use film.In addition; Utilize the dry type layer legal; With being selected from white films, having the film of inorganic oxide vapor deposition layer and at least a kind of rete having in the film with the Thermoadhesive of EVA is combined on the face of sealing rear surface of solar cell sheet material with the opposition side of the resin laminated side of film, can obtain the sealing rear surface of solar cell sheet material thus.
When sealing rear surface of solar cell sheet material of the present invention is used for solar module; So that the resin bed of sealing rear surface of solar cell sheet material is towards the mode in the outside of solar module; Sealing rear surface of solar cell sheet material and unit filler layer is bonding, in the solar module of packing into.
Embodiment
Next, provide embodiment and explain that particularly sealing rear surface of solar cell sheet material of the present invention is with film and use its sealing rear surface of solar cell sheet material.
< evaluation method of characteristic >
The evaluation method of the characteristic of using among the present invention is described below.
(1) coating weight of resin bed is measured
After resin bed forms, the sealing rear surface of solar cell sheet material is cut into area 500cm with film
2, with the quality of this test film as quality (1).Then, resin bed is dissolved in the methyl ethyl ketone, peels off from this test film, the quality of determination test sheet once more, with this quality as quality (2).Then, based on following formula, calculate the coating weight of the resin bed of per unit area.3 test films are carried out the mensuration of above-mentioned coating weight, with its mean value as coating weight.
● coating weight [g/m
2]={ (quality (1))-(quality (2)) } * 20.
(2) the solvent resistance evaluation of resin bed
Sample is immersed in the ethanol 5 minutes, afterwards, uses Kimwipe wiping 50 times.Afterwards, observe the state of filming, carry out following classification.
A: with handle before compare and be coated with membrane stage and do not change.
B: observe base material and peeling off of filming.
(3) evaluation of ultraviolet isolating performance (spectrophotometric spectra mensuration)
Carry out the mensuration of spectrophotometric spectra based on JIS K7105 (2006 annual version).Determinator uses the corporate system UV, visible light near infrared spectrometer UV-3150 of Shimadzu Seisakusho Ltd..The sealing rear surface of solar cell sheet material is estimated through the light penetration of measuring wavelength 360nm place with the ultraviolet isolating performance of film.
(4) the dhering strength evaluation between base material film/resin bed
For base material film and closing force resin bed between (film closing force) of the sealing rear surface of solar cell sheet material of making,, carry out the cross-cut test based on the described method of JIS K5400 (nineteen ninety version) with film.The result classifies as follows.
AA: residual 100 film/100 in
A: residual 81～99 film/100 in
B: in residual the filming below 80/100.
(5) ultra-violet resistance evaluation
Under 60 ℃ * 50%RH atmosphere, at uitraviolet intensity 160mW/cm
2Condition under carry out ultraviolet irradiation in 240 hours (ultraviolet irradiation cumulant 384kWh/m
2).Experimental rig uses the rugged electric corporation system EYE of rock SUPER UV TESTER SUV-W151.Carry out the mensuration of the color specification system b value of ultraviolet irradiation front and back, obtain Δ b value according to following formula.
Δ b=(the b value after the ultraviolet irradiation)-(the b value before the ultraviolet irradiation)
In addition,,, implement ultraviolet irradiation similarly, carry out the evaluation of its front and back in order to estimate the ultra-violet resistance of above-mentioned characteristic for " evaluation of (3) ultraviolet isolating performance ", " the dhering strength evaluation between (4) base material film/resin bed ".
(6) humidity resistance evaluation
Under 120 ℃, the environment of 100%RH, the sealing rear surface of solar cell sheet material is carried out 48 hours heat treatment with film.Experimental rig uses Espec corporate system Pressure cooker TPS-211.Afterwards, the sealing rear surface of solar cell sheet material is carried out " evaluation of (3) ultraviolet isolating performance ", " the dhering strength evaluation between (4) base material film/resin bed " with film, its purpose is to estimate the humidity resistance of above-mentioned characteristic.
(7) anti-flammability evaluation
Horizontal firing property HB test based on UL94 regulations (version in 2010) makes an experiment, and carries out following classification.
The A:HB pass the test
The B:HB test is defective.
(8) anti-adhesive evaluation
The film that has formed resin bed is cut into 10 of 5cm sizes.They are overlapping, and the resin aspect that makes film is overlapping with the base material face of other films.Then, use (strain) DGEngineering corporate system Ink blocking tester DG-BT, apply 5kg/cm
2Load, under 40 ℃ environment, wore out 3 days.Afterwards, the attaching situation of evaluating resin layer and base material film is carried out following classification.
A: resin bed and base material film do not attach
B: resin bed and base material film attach.
(9) anti-efflorescence (Chalking) property evaluation
Under 40 ℃ environment, the film that has formed resin bed was worn out 3 days.Observe the resin layer surface after wearing out, carry out following classification.
A: efflorescence does not take place at resin layer surface
B: in resin layer surface generation efflorescence.
(10) with the mensuration (EVA closing force) of the bonding strength of packing material
At internal layer side (opposing face of the resin laminated face of base material film) the face laminated EVA sheet material of sealing rear surface of solar cell sheet material, and then, half tempered glass of range upon range of thick 3mm above that.Then, use commercially available glass Laminated device, vacuumize the back under 135 ℃ of heating conditions, 3Kgf/cm
2Pressurized treatments is 15 minutes under the condition of load, processes analog solar battery component sample.The EVA sheet material uses 500 μ m thick sheet of Sanvic (strain) system.
Use this analog solar battery component sample,, measure bonding force with the EVA sheet material based on JIS K 6854-2 (version in 1999).The width of the test film of adhesion test is 10mm, 2 test films is carried out 1 time respectively measure.With the mean value of 2 measured values as the bonding strength value.Bonding strength is 100N/50mm when above, is judged as level no problem in practicality.
(11) light reflectance
With above-mentioned (10) item manufacturing and simulating solar module sample likewise.Make the glass side incident of light, the internal layer side (opposing face of the resin laminated face of base material film) of sealing backside sheet material is measured light reflectance from this analog solar battery component sample.As the measured value of reflectivity, use as representative with the reflectivity at wavelength 600nm place.Determinator uses the corporate system spectrophotometer MPC-3100 of Shimadzu Seisakusho Ltd..
(12) mensuration of moisture-vapor transmission
Under the condition of 40 ℃ of temperature, humidity 90%RH, measure moisture-vapor transmission based on the B method (infrared sensor method) that JIS K7129 (version in 2000) is put down in writing.Determinator uses water vapour permeability determinator Permatran (registered trade mark) W3/31 of U.S. MOCON corporate system.2 test films are carried out 1 time respectively measure, with the mean value of 2 measured values value as water vapour permeability.
(resin bed forms the preparation with coating 1)
As fluorine-type resin, preparing Daikin industry (strain) the resinoid smears of TFE system, hydroxyl is Zeffle (registered trade mark) GK570 (solid component concentration: 65 quality %).Fluorine-type resin, coloring pigment, melamine cyanurate ester and solvent are mixed according to the use level shown in the table 1 in the lump, use ball mill that it is disperseed, obtaining solid component concentration is the host coating of 50 quality %.As coloring pigment, use following goods.
● Chinese white: Titanium particles Tayca corporate system JR-709
● black pigment: carbon black particle Degussa corporate system Special black 4A
In above-mentioned host coating, be host coating/urate type 1 according to mass ratio; Hexamethylene-diisocyanate resin=100/2 cooperates as urate type 1, the hexamethylene-diisocyanate resin firmly change Bayer corporate system Desmodur (registered trade mark) N3300 (solid component concentration: 100 quality %).And then add diluent: n-propyl acetate, making it form solid component concentration is the coating of 40 quality % (resin solid component concentration), stirs 15 minutes.Thus, obtaining solid component concentration is that the resin bed of 40 quality % (resin solid component concentration) forms with coating 1.
(resin bed forms the preparation with coating 2)
According to the use level shown in the table 1; Making coloring pigment is that the content of 80 quality %, melamine cyanurate ester is 1 quality % with respect to the content of resin solid state component; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 2.
(resin bed forms the preparation with coating 3)
According to the use level shown in the table 1; Making coloring pigment is that the content of 30 quality %, melamine cyanurate ester is 30 quality % with respect to the content of resin solid state component; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 3.
(resin bed forms the preparation with coating 4)
According to the use level shown in the table 1; Making coloring pigment is that the content of 85 quality %, melamine cyanurate ester is 1 quality % with respect to the content of resin solid state component; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 4.
(resin bed forms the preparation with coating 5)
According to the use level shown in the table 1; Making coloring pigment is that the content of 20 quality %, melamine cyanurate ester is 30 quality % with respect to the content of resin solid state component; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 5.
(resin bed forms the preparation with coating 6)
According to the use level shown in the table 1; Making coloring pigment is that the content of 30 quality %, melamine cyanurate ester is 40 quality % with respect to the content of resin solid state component; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 6.
(resin bed forms the preparation with coating 7)
According to the use level shown in the table 1; Making coloring pigment is that the content of 80 quality %, melamine cyanurate ester is 0.5 quality % with respect to the content of resin solid state component; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 7.
(resin bed forms the preparation with coating 8)
Use biuret type 1; The hexamethylene-diisocyanate resin is promptly firmly changed Bayer corporate system Desmodur (registered trade mark) N3200 (solid component concentration: 100 quality %) replace urate type 1; The hexamethylene-diisocyanate resin; In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 8.
(resin bed forms the preparation with coating 9)
The resin of ultra-violet absorber and light stabilizer (HALS) has been added in use in methyl methacrylate and the acrylic resin of 2-hydroxyethyl methacrylate as raw material (solid component concentration: 40 quality %) replace using Daikin industry (strain) the resinoid smears of TFE system, hydroxyl is Zeffle (registered trade mark) GK570 (solid component concentration: 65 quality %); In addition, employing forms with the same method of the preparation of coating 1 with resin bed and obtains resin bed formation with coating 9.
(resin bed forms the preparation with coating 10)
According to the use level shown in the table 1, mismatch coloring pigment, in addition, adopt with resin bed formation and obtain resin bed formation with coating 10 with the same method of the preparation of coating 1.
(resin bed forms the preparation with coating 11)
According to the use level shown in the table 1, mismatch the melamine cyanurate ester, in addition, adopt with resin bed formation and obtain resin bed formation with coating 11 with the same method of the preparation of coating 1.
(preparation of dry type adhesive for laminate)
Measure 16 mass parts DIC (strain) system dry type layer mixture DICDRY (registered trade mark) LX-903,2 mass parts as big Japanese ink chemical industry (strain) the system KL-75 of curing agent, and 29.5 mass parts ethyl acetate, stirred 15 minutes.Obtain the dry type adhesive for laminate of solid component concentration 20 quality % thus.
(adhesive layer forms the preparation with coating)
The fragrant same clan polyisocyanate resin of measuring 12 mass parts Mitsui Chemicals polyurethane (strain) system dry type layer mixture Takelac (registered trade mark) A-310 (polyester polyurethane resin), 1 mass parts Mitsui Chemicals polyurethane (strain) system is Takenate (registered trade mark) A-3, reaches 212 mass parts ethyl acetate, stirs 15 minutes.The adhesive layer that obtains solid component concentration 3 quality % thus forms uses coating.
(the Thermoadhesive resin bed forms the preparation with coating)
The aqueous emulsion paint that the EVA class of measuring 20 mass parts central authorities physics and chemistry industry (strain) system contains 3 yuan of copolymer resinses is Aquatics (registered trade mark) MC-3800,10.8 mass parts isopropyl alcohols, and 22.6 mass parts water, stirs 15 minutes.The Thermoadhesive resin bed that obtains solid component concentration 15 quality % thus forms uses coating.
(embodiment 1)
The content of preparing the cyclic trimer of east beautiful (strain) system is that following hydrolytic resistance PETG film Lumirror (registered trade mark) X10S (125 μ m) of 1 weight % is as base material film.Use the line rod that resin bed is formed and be coated on the one side of this base material film with coating 1, drying is 60 seconds under 150 ℃, and it is 15.0g/m that dry back coating weight is set
2Resin bed.Make the sealing rear surface of solar cell sheet material as described above with film 1.
(embodiment 2)
Replace resin bed to form except that the coating resin layer forms with coating 2, likewise make the sealing rear surface of solar cell sheet material with film 2 with embodiment 1 described method with the coating 1.
(embodiment 3)
Replace resin bed to form except that the coating resin layer forms with coating 3, likewise make the sealing rear surface of solar cell sheet material with film 3 with embodiment 1 described method with the coating 1.
(embodiment 4)
Replace resin bed to form except that the coating resin layer forms with coating 4, likewise make the sealing rear surface of solar cell sheet material with film 4 with embodiment 1 described method with the coating 1.
(embodiment 5)
Replace resin bed to form except that the coating resin layer forms with coating 5, likewise make the sealing rear surface of solar cell sheet material with film 5 with embodiment 1 described method with the coating 1.
(embodiment 6)
Replace resin bed to form except that the coating resin layer forms with coating 6, likewise make the sealing rear surface of solar cell sheet material with film 6 with embodiment 1 described method with the coating 1.
(embodiment 7)
Replace resin bed to form except that the coating resin layer forms with coating 7, likewise make the sealing rear surface of solar cell sheet material with film 7 with embodiment 1 described method with the coating 1.
(embodiment 8)
Replace resin bed to form except that the coating resin layer forms with coating 8, likewise make the sealing rear surface of solar cell sheet material with film 8 with embodiment 1 described method with the coating 1.
(comparative example 1)
Except that forming with coating 9, the coating resin layer replace resin bed to form with the coating 1,, likewise make the sealing rear surface of solar cell sheet material with film 9 with embodiment 1 described method.
(comparative example 2)
Replace resin bed to form except that the coating resin layer forms with coating 10, likewise make the sealing rear surface of solar cell sheet material with film 10 with embodiment 1 described method with the coating 1.
(comparative example 3)
Replace resin bed to form except that the coating resin layer forms with coating 11, likewise make the sealing rear surface of solar cell sheet material with film 11 with embodiment 1 described method with the coating 1.
(comparative example 4)
Do not form resin bed, with Lumirror (registered trade mark) X10S (east beautiful (strain) system, 125 μ m) as the sealing rear surface of solar cell sheet material with film 12.
The embodiment 1～8 that obtains more than the use, the sealing rear surface of solar cell sheet material of comparative example 1～4 are used film, estimate characteristic according to above-mentioned evaluation method.The result is shown in table 2, and 3.
[table 3]
(evaluation of embodiment 1～8)
The sealing rear surface of solar cell sheet material of embodiment 1～8 with the ultra-violet resistance (Δ b value) of film 1～8, humid heat test after and behind the closing force of filming after the ultraviolet irradiation, humid heat test and the ultraviolet isolating performance after the ultraviolet irradiation all excellent.
(evaluation of embodiment 1～3)
Particularly for the sealing rear surface of solar cell sheet material of embodiment 1～3 with film 1～3; The content of the coloring pigment in the resin bed in the scope of 30～80 quality %, the content of melamine cyanurate ester in the scope of 1～30 quality %, anti-flammability, anti-adhesive, chalking resistance, solvent resistance are also excellent.Need to prove that the content of coloring pigment is more near 80 quality %, the tendency that the closing force of filming behind the humid heat test that just can find more to be caused by the minimizing of amount of resin and the curing of filming reduces.In addition, the content of coloring pigment is more near 30 quality %, can find more by the ultraviolet isolating performance reduce the Δ b value of the base material film that causes increase, be the tendency of the b value increase of the base material film after the ultraviolet irradiation.
(evaluation of embodiment 4,5)
With film 4, contain the coloring pigment of 85 quality % for the sealing rear surface of solar cell sheet material of embodiment 4 in the resin bed, because the amount of coloring pigment is many, so observe efflorescence at resin layer surface.In addition, because the amount of the resinous principle in the resin bed is few, so the closing force of filming behind the humid heat test reduces slightly.
With film 5, because the coloring pigment in the resin bed is few, is 20 quality %, so compare the anti-flammability variation with embodiment 1～3 for the sealing rear surface of solar cell sheet material of embodiment 5.In addition, because the amount of the resinous principle in the resin bed is many, be 50 quality %, so stick together.
(evaluation of embodiment 6,7)
With film 6, owing to contain the melamine cyanurate ester of 40 quality % in the resin bed, the amount of melamine cyanurate ester is many, so compare the solvent resistance variation with embodiment 1～3 for the sealing rear surface of solar cell sheet material of embodiment 6.
With film 7, because the melamine cyanurate ester in the resin bed is few, is 0.5 quality %, so stick together for the sealing rear surface of solar cell sheet material of embodiment 7.In addition, because the amount of the resinous principle in the resin bed is few, so the closing force of filming behind the humid heat test reduces slightly.
(evaluation of embodiment 8)
For the sealing rear surface of solar cell sheet material of embodiment 8 with film 8, will be as 1 of curing agent, the hexamethylene-diisocyanate resin is changed into the biuret type by the urate type, because the curing of filming is insufficient, so the solvent resistance variation.
(evaluation of comparative example 1)
With film 9,, use the acrylic resin that has added ultra-violet absorber and light stabilizer (HALS) to replace fluorine-type resin for the sealing rear surface of solar cell sheet material of comparative example 1 as resin bed.Therefore, along with irradiation ultraviolet radiation, ultra-violet absorber or light stabilizer are exuded to resin layer surface from resin bed, so the ultraviolet isolating performance reduces, the Δ b value of base material film increases.In addition, anti-flammability is also poor.
(evaluation of comparative example 2)
With film 10, do not contain coloring pigment for the sealing rear surface of solar cell sheet material of comparative example 2 in the resin bed.Therefore, the ultraviolet isolating performance lacks, and the Δ b value of base material film increases after the ultraviolet irradiation, and xanthochromia takes place.In addition, owing to do not contain coloring pigment, so anti-flammability is also poor.And then, because the amount of the resinous principle in the resin bed is many, so stick together.
(evaluation of comparative example 3)
With film 11, do not contain the melamine cyanurate ester for the sealing rear surface of solar cell sheet material of comparative example 3 in the resin bed.Therefore, stick together.In addition, the closing force of filming behind the humid heat test also reduces slightly.
(evaluation of comparative example 4)
With film 12 (not forming Lumirror (registered trade mark) the X10S film of resin bed itself), do not have the ultraviolet isolating performance for the sealing rear surface of solar cell sheet material of comparative example 4, do not have to form the coloring pigment layer of the tone that can adjust film yet.Therefore, along with ultraviolet irradiation, the Δ b value of base material film increases, and xanthochromia takes place.Therefore; Be used under the outermost situation of sealing rear surface of solar cell sheet material; Sometimes worry under opposite extreme situations, to produce in the film slight crack, pin hole etc.; The desired functions of seal stock such as electrical insulating property, water vapour isolation are not only lost, and the action of solar module is also had harmful effect.In addition, owing to do not have to form the resin bed that contains coloring pigment, so anti-flammability is also poor.
(embodiment 9)
As the light reflective film, prepare east beautiful (strain) system white PETG film Lumirror (registered trade mark) E20F (50 μ m).As the water vapor barrier film; Prepare following film; With the face of the aluminium oxide vapor deposition layer opposition side of the beautiful film in east processing (strain) oxygenerating aluminium-vapour deposition PETG film Barrialox (registered trade mark) 1031HGTS (12 μ m) on, under following condition, use the direct intaglio plate coating machine of double end tandem successively the coat binding layer form to form and use coating with coating and Thermoadhesive resin bed.
● adhesive layer coating condition: 120 ℃ of target dry film thickness 0.2 μ m, drying oven design temperatures
● Thermoadhesive resin bed coating condition: 100 ℃ of target dry film thickness 1.0 μ m, drying oven design temperatures
● coating speed: 100m/min
● aging: as after coating is reeled, to wear out 2 days down at 40 ℃.
Use line rod is coated on the dry type adhesive for laminate on the base material film surface of sealing rear surface of solar cell sheet material with the resin bed opposition side of film 1 with embodiment 1,80 ℃ of dryings 45 seconds down, forms the adhesive phase of 3.5 μ m.Then, use hand push roller (hand roller), the light reflective film is fitted on the above-mentioned adhesive phase.And then, use the line rod, the dry type adhesive for laminate is coated on the light reflective film surface with the resin bed opposition side of above-mentioned laminate film, 80 ℃ dry 45 seconds down, form the adhesive phase of 3.5 μ m.Then, use the hand push roller, the aluminium oxide vapor deposition aspect of water vapor barrier film is fitted on the above-mentioned adhesive phase.To be heated to 40 ℃ by 3 film formed sheet materials making as described above, in baking oven, aging 3 days, obtain sealing rear surface of solar cell sheet material 1.
(embodiment 10)
Replace likewise obtaining sealing rear surface of solar cell sheet material 2 with embodiment 9 described methods E20F and the water vapor barrier film except that using with excellent eastern beautiful film processing (strain) the system white polyethylene film (150 μ m) of the closing force of EVA sheet material.
(comparative example 5)
Except that the sealing rear surface of solar cell sheet material that uses comparative example 2 replaces the sealing rear surface of solar cell sheet material with the film 1 with film 10, likewise obtain sealing rear surface of solar cell sheet material 3 with embodiment 9 described methods.
(comparative example 6)
Except that the sealing rear surface of solar cell sheet material that uses comparative example 4 replaces the sealing rear surface of solar cell sheet material with the film 1 with film 12, likewise obtain sealing rear surface of solar cell sheet material 4 with embodiment 9 described methods.
(evaluation of embodiment 9,10)
For the sealing rear surface of solar cell sheet material 1,2 of embodiment 9,10, during solar module constitutes, all do not see along with ultraviolet irradiation on the resin bed side that is positioned at outer layer side and cause the closing force between base material film and resin bed to reduce.In addition, the xanthochromia of resin bed and base material film is very little.In addition, the desired characteristic of sealing rear surface of solar cell sheet material is promptly also excellent with the closing force of packing material (EVA resin).And then the water vapour isolation of seal stock 1 that contains the water vapor barrier film in the formation is also excellent.
(evaluation of comparative example 5)
Sealing rear surface of solar cell sheet material 3 for comparative example 5; Owing in outermost resin bed, do not contain coloring pigment; So can't obtain hiding the effect of the wiring pattern etc. of assembly inner face; In addition, thus observe tone variations (increase of Δ b value) along with ultraviolet irradiation seal stock outward appearance.Therefore, if estimate to be exposed to ultraviolet ray for a long time, then cause the resin deterioration of base material film.
(evaluation of comparative example 6)
Sealing rear surface of solar cell sheet material 4 for comparative example 6 does not form resin bed at its outermost layer.That is, owing to do not form the resin bed of shielding ultraviolet rays, so its ultra-violet resistance does not exist fully.Therefore, can't be used for being envisioned for the zone is provided with type etc. and may be exposed to from the purposes of the solar module that form is set of the ultraviolet ray of reflections such as ground surface.
Utilizability on the industry
Sealing rear surface of solar cell sheet material of the present invention is excellent with the light resistance and the humidity resistance of film, can be preferred for the sealing rear surface of solar cell sheet material.And then the sealing rear surface of solar cell sheet material of preferred version of the present invention is also excellent with the anti-flammability of film, can be preferred for the sealing rear surface of solar cell sheet material.Above-mentioned sealing rear surface of solar cell sheet material also can be preferred for solar module.
Claims (6)
1. a sealing rear surface of solar cell sheet material is used film, and resin bed has been closed on its upper strata of one side at least at base material film, and said resin bed contains fluorine-type resin, coloring pigment and melamine cyanurate ester.
2. sealing rear surface of solar cell sheet material as claimed in claim 1 is used film, and wherein, whole with respect to said resin bed, said resin bed contains the coloring pigment of 30～80 quality %, the melamine cyanurate ester of 1～30 quality %.
3. according to claim 1 or claim 2 sealing rear surface of solar cell sheet material is used film; Wherein, also contain at least a kind of polyisocyanate resin that is selected from fragrant same clan polyisocyanate resin, aromatic-aliphatic class polyisocyanate resin, alicyclic ring same clan polyisocyanate resin and the aliphatic category polyisocyanate resin in the said resin bed.
4. a sealing rear surface of solar cell sheet material is used film comprising each described sealing rear surface of solar cell sheet material in the claim 1～3.
5. sealing rear surface of solar cell sheet material; Each described sealing rear surface of solar cell sheet material closes following film with the face upper strata of the opposition side of the resin laminated side of film and forms in claim 1～3, and said film is to be selected from white films, to have the film of inorganic oxide vapor deposition layer and to have at least a kind of film in the film with the Thermoadhesive of vinyl-vinyl acetate copolymer.
6. a solar module comprises claim 4 or 5 described sealing rear surface of solar cell sheet materials and unit filler layer in the said solar module, and said sealing rear surface of solar cell sheet material and said unit filler layer are bonded in together.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010023817 | 2010-02-05 | ||
| JP2010-023817 | 2010-02-05 | ||
| PCT/JP2011/051399 WO2011096306A1 (en) | 2010-02-05 | 2011-01-26 | Film for solar cell rear surface sealing sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102754219A true CN102754219A (en) | 2012-10-24 |
Family
ID=44355306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800085428A Pending CN102754219A (en) | 2010-02-05 | 2011-01-26 | Film for solar cell rear surface sealing sheet |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5692706B2 (en) |
| KR (1) | KR20120123535A (en) |
| CN (1) | CN102754219A (en) |
| TW (1) | TW201133895A (en) |
| WO (1) | WO2011096306A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105793350A (en) * | 2013-10-09 | 2016-07-20 | 阿肯马法国公司 | Fluorinated composition containing a UV absorber and use of same as a transparent protective layer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5540825B2 (en) * | 2010-03-29 | 2014-07-02 | 大日本印刷株式会社 | Shielding sheet, and back sheet and solar cell module for solar cell module using the same |
| JP5660999B2 (en) * | 2011-08-17 | 2015-01-28 | 富士フイルム株式会社 | Polymer sheet, back sheet for solar cell module, and solar cell module |
| EP2775535A4 (en) * | 2011-11-04 | 2015-07-22 | Daikin Ind Ltd | Backsheet for solar cell module, laminate, and solar cell module |
| CN109988466A (en) * | 2017-11-24 | 2019-07-09 | 大金氟化工（中国）有限公司 | Composition, coating, film, solar cell module back veneer and solar cell module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997050130A2 (en) * | 1996-06-27 | 1997-12-31 | Evergreen Solar, Inc. | Solar cell modules with improved backskin and methods for forming same |
| JP2000109769A (en) * | 1998-10-06 | 2000-04-18 | Sony Chem Corp | Flame-retardant adhesive film and flat cable |
| CN1950436A (en) * | 2004-05-13 | 2007-04-18 | 西巴特殊化学品控股有限公司 | Flame retardants |
| CN1965413A (en) * | 2004-06-04 | 2007-05-16 | 圣戈本操作塑料有限公司 | Photovoltaic device and method for manufacturing same |
| CN101631677A (en) * | 2007-03-09 | 2010-01-20 | 3M创新有限公司 | Multilayer film |
-
2011
- 2011-01-26 KR KR1020127023096A patent/KR20120123535A/en not_active Application Discontinuation
- 2011-01-26 CN CN2011800085428A patent/CN102754219A/en active Pending
- 2011-01-26 WO PCT/JP2011/051399 patent/WO2011096306A1/en active Application Filing
- 2011-01-26 JP JP2011523241A patent/JP5692706B2/en not_active Expired - Fee Related
- 2011-02-01 TW TW100103812A patent/TW201133895A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997050130A2 (en) * | 1996-06-27 | 1997-12-31 | Evergreen Solar, Inc. | Solar cell modules with improved backskin and methods for forming same |
| JP2000109769A (en) * | 1998-10-06 | 2000-04-18 | Sony Chem Corp | Flame-retardant adhesive film and flat cable |
| CN1950436A (en) * | 2004-05-13 | 2007-04-18 | 西巴特殊化学品控股有限公司 | Flame retardants |
| CN1965413A (en) * | 2004-06-04 | 2007-05-16 | 圣戈本操作塑料有限公司 | Photovoltaic device and method for manufacturing same |
| CN101631677A (en) * | 2007-03-09 | 2010-01-20 | 3M创新有限公司 | Multilayer film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105793350A (en) * | 2013-10-09 | 2016-07-20 | 阿肯马法国公司 | Fluorinated composition containing a UV absorber and use of same as a transparent protective layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5692706B2 (en) | 2015-04-01 |
| KR20120123535A (en) | 2012-11-08 |
| WO2011096306A1 (en) | 2011-08-11 |
| TW201133895A (en) | 2011-10-01 |
| JPWO2011096306A1 (en) | 2013-06-10 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: TORAY ADVANCED FILM CO., LTD. Free format text: FORMER OWNER: TORAY INC. Effective date: 20140527 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20140527 Address after: Japan's Tokyo central Japan Hashimoto stone town 3 chome 3 No. 16 Applicant after: Toray Advanced Film Co., Ltd. Address before: Tokyo, Japan, Japan Applicant before: Toray Industries, Inc. |
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Application publication date: 20121024 |