JPS61272975A - Back protective sheet for solar cell - Google Patents
Back protective sheet for solar cellInfo
- Publication number
- JPS61272975A JPS61272975A JP60114584A JP11458485A JPS61272975A JP S61272975 A JPS61272975 A JP S61272975A JP 60114584 A JP60114584 A JP 60114584A JP 11458485 A JP11458485 A JP 11458485A JP S61272975 A JPS61272975 A JP S61272975A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- protective sheet
- silane coupling
- coupling agent
- back protective
- 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
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 24
- 229920006015 heat resistant resin Polymers 0.000 claims abstract description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 3
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical group [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000945 filler Substances 0.000 abstract description 18
- 229920005989 resin Polymers 0.000 abstract description 17
- 239000011347 resin Substances 0.000 abstract description 17
- 239000011888 foil Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 9
- 239000012780 transparent material Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 229910021421 monocrystalline silicon Inorganic materials 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 229920006267 polyester film Polymers 0.000 description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 description 4
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000009820 dry lamination Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- MASNVFNHVJIXLL-UHFFFAOYSA-N ethenyl(ethoxy)silicon Chemical compound CCO[Si]C=C MASNVFNHVJIXLL-UHFFFAOYSA-N 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000131 polyvinylidene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920006027 ternary co-polymer Polymers 0.000 description 1
Classifications
-
- 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
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、太陽電池モジュールの裏面保護シートに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a back protection sheet for a solar cell module.
太陽電池モジエールの基本的な機能は、太陽の輻射エネ
ルギーを効率良く太陽電池素子へ導くと共に、太陽電池
素子及び内部配線を長期に亘って過酷な自然環境に耐え
得るように保護する事にある。従来一般に太陽電池モジ
ュールは、第1図に示す如く、上部透明材料(1)がモ
ジュール全体の構造的支持体となったもので、例えばガ
ラス板等の上部透明材料(1)と、塗装鋼板、あるいは
アルミニウム箔をサンドイッチしたフッ化ビニルシート
等の裏面保護シート(4)の間に、相互に配線した単結
晶シリコン等より成る太陽電池素子(2)を挿入し、更
に急激な外気条件の変化による素子の損傷防止や電気絶
縁性の確保の為に、上部透明材料と下部基板用材料の間
を、エチレン−酢酸ビニル共重合体等の充填材(3)で
充填し、更に全体をアルミニウム、ステンレス等の枠体
(5)を用いて封入固定したものである。The basic function of a solar cell module is to efficiently guide the sun's radiant energy to the solar cell element, and to protect the solar cell element and internal wiring so that it can withstand harsh natural environments over a long period of time. Conventionally, solar cell modules generally have an upper transparent material (1) that serves as a structural support for the entire module, as shown in Fig. 1. For example, the upper transparent material (1) such as a glass plate, a painted steel plate, Alternatively, solar cell elements (2) made of monocrystalline silicon, etc., interconnected with each other are inserted between a back protection sheet (4) such as a vinyl fluoride sheet sandwiched with aluminum foil. In order to prevent damage to the element and ensure electrical insulation, the space between the upper transparent material and the lower substrate material is filled with a filler (3) such as ethylene-vinyl acetate copolymer, and the whole is made of aluminum or stainless steel. It is enclosed and fixed using a frame body (5) such as.
ここにおいて、裏面保護シート(4)は、太陽電池モジ
エール内部の部品(太陽電池素子、内部配線等)を外部
からの機械的衝撃、圧力等の外力から保護し、また外部
からの湿気の浸入によりモジニール内部部品が劣化する
事を防止する防湿膜として設けられるものである。Here, the back protection sheet (4) protects the components inside the solar cell module (solar cell elements, internal wiring, etc.) from external forces such as mechanical shock and pressure from the outside, and also protects the components inside the solar cell module from external forces such as external mechanical shock and pressure. It is provided as a moisture-proof membrane to prevent deterioration of the internal parts of Modineal.
従来、裏面保護シートとしては、第2図にその断面図を
示すような構成から成る積層材料が用いられている。即
ち、防湿性金属箔(7)を耐候性樹脂フィルム(61(
8)により両側からはさんだ構成である。Conventionally, a laminated material having a structure as shown in a cross-sectional view in FIG. 2 has been used as a back protection sheet. That is, the moisture-proof metal foil (7) is covered with a weather-resistant resin film (61 (
8), it is sandwiched from both sides.
耐候性樹脂フィルム(6)(8)は、太陽電池として実
際に使用される際の屋外曝露条件において、太陽光ある
いは降雨により劣化しないものとして、白色ポリフッ化
ビニル樹脂のフィルムが用いられ、防湿性金属箔として
は、例えばアルミニウム箔あるいは亜鉛メッキ鉄箔等が
用いられている。The weather-resistant resin films (6) and (8) are made of white polyvinyl fluoride resin, which is moisture-proof and does not deteriorate due to sunlight or rain under outdoor exposure conditions when actually used as a solar cell. As the metal foil, for example, aluminum foil or galvanized iron foil is used.
この裏面保護シートを、充填材と熱接着させ、太陽電池
モジュールに組み込む(一体化させる)訳であるが、ポ
リフッ化ビニル樹脂自体は、接着性が悪い為に何らかの
処理を施こし接着性を向上させている。This back protection sheet is thermally bonded to the filler material and incorporated (integrated) into the solar cell module, but since the polyvinyl fluoride resin itself has poor adhesion, some treatment is applied to improve the adhesion. I'm letting you do it.
ところが、近年、太陽電池モジエールの価格は急激かつ
大巾なコストダウンが求められており、裏面保護シート
自体の価格も低下させなければ対応できない状況にある
。そのため、高価なフッ素系フィルムからポリエステル
やポリ塩イヒビニル等の汎用の安価なフィルムを用いる
事が考えられているが、充填材であるエチレン−酢酸ビ
ニル共重合体樹脂シートとの接着手段が無く、加熱、加
圧のみで接着(一体化)させる方法が望まれていた。However, in recent years, there has been a demand for drastic and drastic cost reductions in the price of solar cell modules, and this cannot be met unless the price of the back protection sheet itself is also reduced. Therefore, it has been considered to replace the expensive fluorine-based film with a general-purpose inexpensive film such as polyester or polychloride hibinyl, but there is no means for adhesion to the ethylene-vinyl acetate copolymer resin sheet, which is the filler. A method of adhesion (integration) using only heating and pressure was desired.
本発明は、上記従来技術の問題点を解決するものであり
、太陽電池モジー−ルを製造する際、充填材と裏面保護
シートが、加熱圧着により容易に接着するよう、接着面
をシランカップリング剤で処理(塗工)した裏面保護シ
ートを提供することを目的とする。The present invention solves the above-mentioned problems of the prior art, and when manufacturing a solar cell module, the adhesive surface is silane-coupled so that the filler and the back protection sheet can be easily adhered by heat and pressure bonding. The purpose of the present invention is to provide a back protection sheet treated (coated) with a chemical agent.
〔発明の概要〕 ゛
本発明は、150℃以下の温度では溶融軟化しない耐熱
性樹脂フィルム、又はこのフィルムを最内面とする積層
シートの最内面にシランカップリング層を設けたことを
特徴とする太陽電池用裏面保護シートを提供する。即ち
、裏面保護シートに用いる内面の耐熱性・耐候性樹脂フ
ィルムは、フッ素系フィルムのみではな(、ポリエステ
ルフィルム、塩化ビニルフィルムなど適用範囲を広げる
事が出来る。[Summary of the invention] ゛The present invention is characterized in that a silane coupling layer is provided on the innermost surface of a heat-resistant resin film that does not melt and soften at temperatures below 150°C, or a laminated sheet having this film as the innermost surface. Provides back protection sheets for solar cells. That is, the heat-resistant and weather-resistant resin film on the inner surface used for the back protection sheet is not limited to only fluorine-based films (the range of applications can be expanded to polyester films, vinyl chloride films, etc.).
以下、図面を参照して本発明の詳細な説明する。第3図
は本発明の太陽電池モジュール用裏面保護シートの一実
施例を示す断面図であり、外側より耐熱性・耐候性樹脂
フィルム(8)、防湿性金属箔(7)、耐熱性−腎≠セ
フィルム(6)、シランカップリング剤層(9)から構
成されている。Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 3 is a cross-sectional view showing one embodiment of the back protection sheet for solar cell modules of the present invention. It is composed of ≠Sephimrum (6) and a silane coupling agent layer (9).
耐熱性・耐候性樹脂フィルム(8)は、裏面保護シート
として熱プレス作業性を与えるために設けられ、太陽電
池モジュール製造時の熱プレス工程の際に加えられる熱
により溶融したり劣化したりする事がなく・しかも太陽
電池として実際に使用される際の屋外曝露条件において
も太陽光、降雨等により劣化しない樹脂フィルムが使用
される。特に熱プレスの条件は通常150℃程度の熱が
加えられるので、150℃以下の温度では溶融軟化しな
い樹脂フィルムである必要がある。The heat-resistant/weather-resistant resin film (8) is provided as a back protection sheet to provide heat press workability, and is not susceptible to melting or deterioration due to heat applied during the heat press process during solar cell module manufacturing. A resin film is used that does not deteriorate due to sunlight, rain, etc. even under outdoor exposure conditions when actually used as a solar cell. In particular, since heat press conditions typically involve applying heat of about 150°C, the resin film must not melt and soften at temperatures below 150°C.
例えば、パーフルオロアルコキシ樹脂、4フッ化エチレ
ン−67フ化プロピレン共重合体、バーフルオロエチレ
ン−パーフルオロプロピレン−バーフルオロビニルエー
テル三元共重合体ζエチレン−47フ化工チレン共重合
体、塩化−37フ化エチレン樹脂、ポリ7ツ化ビニリデ
ン、ポリフッ化ビニルから選ばれるフッ素樹脂フィルム
のほか、ポリカーボネート、ポリメチルメタクリレート
、ポリアクリレート、又は紫外線吸収剤(例えば、ベン
ゾフェノンやベンゾトリアゾールなど)を含浸あるいは
練り込んだポリエチレンテレフタレートから選ばれる一
種のフィルム又はこれらの複合フィルムがある。For example, perfluoroalkoxy resin, tetrafluoroethylene-67fluoropropylene copolymer, perfluoroethylene-perfluoropropylene-perfluorovinyl ether ternary copolymer ζethylene-47fluoroethylene copolymer, chloride-37 In addition to fluororesin films selected from fluorinated ethylene resin, polyvinylidene heptadide, and polyvinyl fluoride, impregnated or kneaded with polycarbonate, polymethyl methacrylate, polyacrylate, or ultraviolet absorbers (e.g., benzophenone, benzotriazole, etc.) There is a kind of film selected from polyethylene terephthalate or a composite film thereof.
防湿金属箔(71としては、通常、アルミニウム箔を用
いることができる。また、裏面保護シートの内面の耐熱
性フィルム(6)とし゛ては、上記の耐熱性・耐候性フ
ィルム(8)と同様のフィルムで問題ないが、本発明に
おいては、シランカップリング剤との適性から、特に、
ポリエチレンテレフタレートフィルム、塩化ビニルフィ
ルムが望まれる。なお、このフィルム(6)も、150
’Cで溶融軟化しないことが必要である。これら、耐
熱性耐候性フィルム(81、防湿性金属箔(7)、耐熱
性フィルム(6)の積層方法については、接着剤等を介
したドライラミネート法が適当であるが、積層方法につ
いては、特に限定されるものではない。As the moisture-proof metal foil (71), aluminum foil can usually be used.Also, as the heat-resistant film (6) on the inner surface of the back protection sheet, the same heat-resistant/weather-resistant film (8) as described above can be used. There is no problem with film, but in the present invention, due to compatibility with the silane coupling agent, in particular,
Polyethylene terephthalate film and vinyl chloride film are preferred. In addition, this film (6) also has 150
It is necessary that it does not melt and soften at 'C. As for the method of laminating these heat-resistant and weather-resistant films (81), moisture-proof metal foil (7), and heat-resistant films (6), dry lamination using an adhesive or the like is appropriate. It is not particularly limited.
シランカップリング剤(9)としては、例えばビニルシ
ランやエポキシシランが使用できる。より具体的には、
ビニルシランとしてはビニルトリメトキシシラン、ビニ
ルトリエトキシシラン、ビニルトリス(βメトキシエト
キシ)シランが例示でき、これらはいずれも下記構造式
中を有している。As the silane coupling agent (9), for example, vinyl silane or epoxy silane can be used. More specifically,
Examples of vinylsilane include vinyltrimethoxysilane, vinyltriethoxysilane, and vinyltris(β-methoxyethoxy)silane, all of which have the following structural formula.
構造式(II
CH2=CH81= R
(ただしRは0CHs、OC2H5,0C2HaOCH
s のいずれかを意味する]
また、エポキシシランとしては下記構造式(II)を有
するものが好適である。Structural formula (II CH2=CH81= R (where R is 0CHs, OC2H5, 0C2HaOCH
s ] In addition, as the epoxysilane, one having the following structural formula (II) is suitable.
構造式(II)
CR5
該シランカップリング剤を塗工するに当り、希釈剤とし
てはアルコール系が適しており、特にエチルアルコール
が一般的である。また塗工方法としては特に限定するも
のではないが、該シランカップリング剤の適性溶液濃度
が約1%である為、溶液粘度は極めて低いので、ロール
コートがitしい。塗工量としては、1〜10 g/s
i’ (ウェット)が望ましい。モして塗工後は80℃
以上の加熱オープンにて充分乾燥させる。以上のように
、裏面保護シートの内面フィルム上に、シランカップリ
ング剤層を設ける。Structural Formula (II) CR5 When applying the silane coupling agent, alcohols are suitable as diluents, and ethyl alcohol is particularly common. Although the coating method is not particularly limited, since the appropriate solution concentration of the silane coupling agent is about 1%, the solution viscosity is extremely low, so roll coating is recommended. Coating amount: 1 to 10 g/s
i' (wet) is desirable. 80℃ after coating
Dry thoroughly by heating and opening as described above. As described above, a silane coupling agent layer is provided on the inner surface film of the back protection sheet.
次に太陽電池モジー−ルに使用される充填材について説
明する。Next, the filler used in the solar cell module will be explained.
一般に充填材(3)として使用される樹脂は、ポリビニ
ルブチラールやエチレン−酢酸ビニル共重合体樹脂であ
り、酢酸ビニルの含有量は約30%程度のものが使用さ
れる。この充填材は、太陽電池モジュールの上部透明材
料、即ち、ガラスと熱融着する性質を有している。Generally, the resin used as the filler (3) is polyvinyl butyral or ethylene-vinyl acetate copolymer resin, and the vinyl acetate content is about 30%. This filler has a property of being thermally fused to the upper transparent material of the solar cell module, that is, glass.
本発明者らは、この性質に着目し、通常では、エチレン
−酢酸ビニル共重合体樹脂と熱融着しないポリエチレン
テレフタレート樹脂、塩化ビニル樹脂等の表面を、シラ
ンカップリング剤処理を施こす事により、充填材との接
着性を向上させることに成功した。熱融着方法に関して
は、裏面保護シートの外面より150℃程度の熱を加え
、充填材(3)と裏面保護シート内面に設けたシランカ
ップリング剤層とを密着させ、3〜10分程度、加熱・
加圧するだけで十分な接着強度を得る事が出来る。The present inventors focused on this property, and by treating the surfaces of polyethylene terephthalate resins, vinyl chloride resins, etc., which do not normally heat-seal with ethylene-vinyl acetate copolymer resins, by treating them with a silane coupling agent. succeeded in improving the adhesion with the filler. Regarding the heat fusion method, heat of about 150°C is applied from the outer surface of the back protection sheet to bring the filler (3) and the silane coupling agent layer provided on the inner surface of the back protection sheet into close contact, and the heat is applied for about 3 to 10 minutes. heating·
Sufficient adhesive strength can be obtained just by applying pressure.
以下、実施例にて本発明を更に詳細に説明する。Hereinafter, the present invention will be explained in more detail with reference to Examples.
〔実施例1〕
印積層シートの作成
下記層構成の積層シート(1)をドライラミネート法に
より作成した。なお、接着剤としてはウレタン系接着剤
を用いた。[Example 1] Preparation of stamped laminated sheet A laminated sheet (1) having the following layer structure was prepared by dry lamination. Note that a urethane adhesive was used as the adhesive.
・積層シート(1)
(内側)ポリエステルフィルム(東し株製ルミラー 厚
さ38μ)/アルミニウム箔(三菱アルミニウム株製
厚さ25μ)/耐候性ポリエステルフィルム(東し株f
fQ−37、厚さ38μン(外側)
(ロ)シランカップリング剤の塗ニ
ジランカップリング剤の塗工については、次の様に行な
った。・Laminated sheet (1) (Inside) Polyester film (lumirror, manufactured by Toshi Co., Ltd., thickness 38μ) / aluminum foil (manufactured by Mitsubishi Aluminum Co., Ltd.)
Thickness: 25μ)/Weather-resistant polyester film (Toshibu f
fQ-37, thickness 38 μm (outside) (b) Coating of silane coupling agent Coating of silane coupling agent was carried out as follows.
シランカップリング斉トービニルエトキシシラン(信越
シリコン株制KBE1003)
希釈溶剤 −・−エチルアルコール溶液濃度
−・−1’wt%
上記濃度に希釈したシランカップリング剤溶液を、ロー
ルコーティングにより、積層シートの内側ポリエステル
フィルム上に塗工した。塗工量は、8 g / m”
W e tであった。なお、乾燥は80〜100℃のオ
ーブン温度設定とした。Silane coupling reaction vinyl ethoxysilane (Shin-Etsu Silicon Co., Ltd. KBE1003) Diluent solvent - Ethyl alcohol solution concentration
-.-1'wt% A silane coupling agent solution diluted to the above concentration was applied onto the inner polyester film of the laminated sheet by roll coating. Coating amount is 8 g/m”
It was wet. Note that the oven temperature was set at 80 to 100°C for drying.
(ハ)充填材との接着
上記シランカップリング剤層を設けた裏面保護シートと
充填材(三井デュポンケミカル株製エバフレックス80
45)と重ね合わせ、平板プレス機にて、150℃−5
分加熱e加圧した。(c) Adhesion with filler The back protective sheet provided with the above silane coupling agent layer and the filler (Evaflex 80 manufactured by DuPont Mitsui Chemical Co., Ltd.)
45) and heated at 150℃-5 using a flat plate press.
Heat and pressurize for 1 minute.
プレスは、外側耐候性フィルム面より行なった。Pressing was performed from the outer weather-resistant film side.
に)比較例
比較例としては、上記積層シート(11にシランカップ
リング剤を塗工することなく、そのまま上記←4の接着
を行なった。B) Comparative Example As a comparative example, the above laminated sheet (11) was bonded as described in ←4 above without being coated with a silane coupling agent.
(ホ)評価
インストロン型引張試験機により、充填剤と裏面保護シ
ートの剥離強度(接着強度)を測定した6引張スピード
は300 mm/min、 90度剥離である。この結
果を以下の表1に示す。(e) Evaluation Peel strength (adhesive strength) between the filler and the back protective sheet was measured using an Instron type tensile tester.6 The tensile speed was 300 mm/min and 90 degree peeling. The results are shown in Table 1 below.
〔実施例2〕
印積層シートの作成
実施例1と同様の方法で下記層構成の積層シート(2)
を作製した。[Example 2] Creation of stamped laminated sheet A laminated sheet (2) with the following layer structure was prepared in the same manner as in Example 1.
was created.
・積層シート(2)
(内側ンボリ塩化ビニルフィルム/アルミニウム箔/耐
候性ポリエステル(外側)
(ロ)シランカップリング剤の塗ニ
ジランカップリング剤として、ビニルトリス(βメトキ
シエトキシ)シランを用い、塗工条件は実施例1と同様
とした。・Laminated sheet (2) (inner vinyl chloride film/aluminum foil/weather-resistant polyester (outer) The conditions were the same as in Example 1.
(ハ)充填材との接着 実施例1と同様とした。(c) Adhesion with filler material The procedure was the same as in Example 1.
に)比較例
比較例としては上記積層シート(2)にシランカップリ
ング剤を塗工することなく、そのまま(ハ)の接着を行
なった◇
(ホ)評価
評価は実施例1と同様に行なった。この結果を表2に示
す。B) Comparative Example As a comparative example, the above laminated sheet (2) was bonded as is (c) without being coated with a silane coupling agent ◇ (e) Evaluation Evaluation was performed in the same manner as in Example 1. . The results are shown in Table 2.
表2
〔実施例3〕
(イ)積層シートの作成
実施例Iと同様の方法で、下記表3の層構成を有する積
層シー? (3)(4)(5)[61を作成した。Table 2 [Example 3] (a) Creation of a laminated sheet A laminated sheet having the layer structure shown in Table 3 below was prepared in the same manner as in Example I. (3) (4) (5) [61 was created.
表3
(ロ)シランカップリング剤の塗工
上述した構造式(II)を有するエポキシシランカップ
リング剤(信越シリコン株制KBM403)をエタノー
ルにて希釈し、1 wt%の溶液としたものを、上記積
層シード(31(4) (5)(61の内側面にロール
コーティングにより塗工した。塗布量は7g/m″we
t i:あった。得られた裏面保護シートをそれぞれ本
発明シート(31(41(5) (6)とする。Table 3 (b) Coating of silane coupling agent The epoxy silane coupling agent having the above-mentioned structural formula (II) (Shin-Etsu Silicon Co., Ltd. KBM403) was diluted with ethanol to make a 1 wt% solution. The above laminated seeds (31 (4) (5) (61) were coated on the inner surface by roll coating. The coating amount was 7 g/m"we
ti: There was. The obtained back protection sheets are respectively referred to as the present invention sheets (31 (41 (5) (6)).
(ハ)充填材との接着 実施例1と同様にした。(c) Adhesion with filler material The same procedure as in Example 1 was carried out.
に)比較例
積層シート(3)(41(51(61にシランカップリ
ング剤を塗工することな(、そのまま上記(ハ)の接着
を行なった。B) Comparative Example Laminated Sheets (3) (41 (51) (61 was not coated with a silane coupling agent), and the adhesion described in (C) above was performed as it was.
(ホ)評価 実施例1と同様に行なった。この結果を表4忙示す。(e) Evaluation The same procedure as in Example 1 was carried out. The results are shown in Table 4.
表4 接着強度(kg / 15 mm
本発明(312,2
//14) 0.9
” (511,6
〃(6) 1.2
比較例(31Q、 1
/’(410(接着せず
〔発明の効果〕
以上詳細に述べた様に、本発明の太陽電池モジュール用
裏面保護シートは、シランカップリング剤層を設けた事
により、裏面保護シートの内面フィルムと充填材との接
着強度を向上させる事が出来るものである。即ち、従来
は内面フィルムがポリフッ化ビニルに限定されたもので
あったが、本発明により、他フィルムへの展開が広まり
太陽電池価格の急激なる低下にともなう対策として、十
分対応可能なものである。Table 4 Adhesive strength (kg / 15 mm
Present invention (312,2 //14) 0.9'' (511,6 〃(6) 1.2 Comparative example (31Q, 1 /') (410 (no adhesion [effect of the invention]) As described in detail above In addition, the back protection sheet for a solar cell module of the present invention is capable of improving the adhesive strength between the inner surface film of the back protection sheet and the filler by providing a silane coupling agent layer. Conventionally, the inner surface film has been limited to polyvinyl fluoride, but the present invention can be widely used for other films, and can be fully used as a countermeasure against the rapid decline in solar cell prices.
図面の第1図は太陽電池モジュールの断面図、第2図は
従来の裏面保護シートの断面図、第3図は本発明の裏面
保護シートの断面図である。FIG. 1 is a sectional view of a solar cell module, FIG. 2 is a sectional view of a conventional back protection sheet, and FIG. 3 is a sectional view of a back protection sheet of the present invention.
Claims (1)
する積層シートの最内面にシランカップリング剤層を設
けたことを特徴とする太陽電池用裏面保護シート。 2)シランカップリング剤がビニルシランであることを
特徴とする特許請求の範囲第1)項記載の太陽電池用裏
面保護シート。 3)シランカップリング剤がエポキシシランであること
を特徴とする特許請求の範囲第1)項記載の太陽電池用
裏面保護シート。[Scope of Claims] 1) A back protection sheet for solar cells, characterized in that a silane coupling agent layer is provided on the innermost surface of a heat-resistant resin film or a laminated sheet having this film as the innermost surface. 2) The back protective sheet for solar cells according to claim 1, wherein the silane coupling agent is vinyl silane. 3) The back protective sheet for solar cells according to claim 1, wherein the silane coupling agent is epoxy silane.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60114584A JPS61272975A (en) | 1985-05-28 | 1985-05-28 | Back protective sheet for solar cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60114584A JPS61272975A (en) | 1985-05-28 | 1985-05-28 | Back protective sheet for solar cell |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61272975A true JPS61272975A (en) | 1986-12-03 |
Family
ID=14641505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60114584A Pending JPS61272975A (en) | 1985-05-28 | 1985-05-28 | Back protective sheet for solar cell |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61272975A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1005096A3 (en) * | 1998-11-12 | 2000-12-27 | Kaneka Corporation | Solar cell module |
JP2007048944A (en) * | 2005-08-10 | 2007-02-22 | Toppan Printing Co Ltd | Solar cell back sealing sheet |
JP2007067248A (en) * | 2005-09-01 | 2007-03-15 | Fuji Electric Holdings Co Ltd | Solar cell module |
JP2011187822A (en) * | 2010-03-10 | 2011-09-22 | Dainippon Printing Co Ltd | Filler composition for solar cell module, filler for solar cell module and solar cell module |
JP2015079834A (en) * | 2013-10-16 | 2015-04-23 | 大日本印刷株式会社 | Sealing-material sheet for solar battery module use, and method for manufacturing the same |
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 |
-
1985
- 1985-05-28 JP JP60114584A patent/JPS61272975A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1005096A3 (en) * | 1998-11-12 | 2000-12-27 | Kaneka Corporation | Solar cell module |
US6300556B1 (en) | 1998-11-12 | 2001-10-09 | Kaneka Corporation | Solar cell module |
US6384315B1 (en) | 1998-11-12 | 2002-05-07 | Kaneka Corporation | Solar cell module |
JP2007048944A (en) * | 2005-08-10 | 2007-02-22 | Toppan Printing Co Ltd | Solar cell back sealing sheet |
JP2007067248A (en) * | 2005-09-01 | 2007-03-15 | Fuji Electric Holdings Co Ltd | Solar cell module |
JP2011187822A (en) * | 2010-03-10 | 2011-09-22 | Dainippon Printing Co Ltd | Filler composition for solar cell module, filler for solar cell module and solar cell module |
JP2015079834A (en) * | 2013-10-16 | 2015-04-23 | 大日本印刷株式会社 | Sealing-material sheet for solar battery module use, and method for manufacturing the same |
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 |
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