JP5097814B2 - 太陽電池封止材用evaシートおよびその製造方法 - Google Patents
太陽電池封止材用evaシートおよびその製造方法 Download PDFInfo
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- JP5097814B2 JP5097814B2 JP2010243827A JP2010243827A JP5097814B2 JP 5097814 B2 JP5097814 B2 JP 5097814B2 JP 2010243827 A JP2010243827 A JP 2010243827A JP 2010243827 A JP2010243827 A JP 2010243827A JP 5097814 B2 JP5097814 B2 JP 5097814B2
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- 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
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Description
架橋剤が同一な場合に、左右領域の架橋剤含量が中間領域の架橋剤の含量より高くして、左右領域の架橋を中間領域よりさらに早く進行させる方法である。これのためには、シートの中間領域の架橋剤の含量は、中間領域のEVA樹脂100重量部当り0.1〜1.5重量部で使用されることが好ましく、左右領域の架橋剤の含量は、左右領域のEVA樹脂100重量分当り1.6〜3重量部で使用されることが好ましい。
溶融指数(190℃、2.16kg)10g/10min,ビニルアセテート含量28重量%のエチレンビニルアセテート共重合体(三星トータル(株)製)100重量部にアルケマ社のLuperox TBEC(tert-ブチル-2-エチルへキシルモノペルオキシカーボネート)1重量部、架橋助剤としてエボニック社のTAICROS(トリアリルイソシアヌレート)を0.5重量部、紫外線吸収剤としてシバ社のChimassorb81(2-ヒドロキシ-4-オクチルオキシ-ベンゾフェノン)0.2重量部、紫外線安定剤としてシバ社のTinuvin770(ビス-2,2,6,6,-テトラメチル-4-ピペリジニルセバケート)を0.1重量部、シランカップリング剤としてダウコニング社のOFS6030(メタクリルオキシプロピルトリメトキシシロキサン)0.3重量部を混合した。以後、押出機を通じてシートAを製造し、押出機温度は100℃、T-ダイ温度は100℃を維持し、製造されたシートの厚さは0.5mmであった。
シートDは、架橋剤としてLuperox 101((2,5-ジメチル-2、5-ジ-tert-ブチルペルオキシヘキサン)1.0重量部を単独使用したことを除いては、上記のシートAの製造方法と同一な方法でシートを製造した。
(実施例1)
上記製造されたそれぞれのシート中で、シートAをそれぞれ左右領域シートに、シートCを中間領域のシートに使用して多領域シートを製作した。この場合、シート幅基準に中間領域が70%、左右領域がそれぞれ15%ずつなるように接合部を融着して多領域シートを製造した。
[比較例1]
上記実施例1において、シートAとシートCの代わりに、シートAを単独に使用して同一な方法で単一領域シートを製造し、同一な条件でラミネーションを実施して試片を製作し、同一な方法で測定及び確認した。
[比較例2]
上記実施例1において、シートAとシートCの代わりに、シートBを単独に使用して同一な方法で単一領域シートを製造し、同一な条件でラミネーションを実施して試片を製作し、同一な方法で測定及び確認した。
[比較例3]
上記実施例1において、シートAとシートCの代わりに、シートCを単独に使用して同一な方法で単一領域シートを製造し、同一な条件でラミネーションを実施して試片を製作し、同一な方法で測定及び確認した。
[比較例4]
上記実施例1において、シートAとシートCの代わりに、シートDを単独に使用して同一な方法で単一領域シートを製造し、同一な条件でラミネーションを実施して試片を製作し、同一な方法で測定及び確認した。
Claims (10)
- エチレンビニルアセテート共重合体樹脂と架橋剤を含んでなる太陽電池封止材用シートにおいて、上記シートは、全体シート幅のそれぞれ5〜30%の左右領域と全体シート幅の90〜40%の中間領域で構成され、上記左右領域と中間領域における架橋剤の組成または含量、または組成及び含量が異なるように構成される多領域シートであることを特徴とする太陽電池封止材用シート。
- 上記シートは、左右領域の150℃架橋度が中間領域よりさらに高いことを特徴とする請求項1に記載の太陽電池封止材用シート。
- 上記シートの上記左右領域における架橋剤としては、1時間半減期が110〜120℃のペルオキシケタールと1時間半減期が90〜130℃のペルオキシカーボネート中から選ばれる1種以上を単独または混合使用し、上記シートの中間領域における架橋剤としては、1時間半減期が130〜150℃のジアルキルペルオキシドと1時間半減期が110〜130℃のペルオキシカーボネート中から選ばれる1種以上を単独または混合使用することを特徴とする請求項1または2に記載の太陽電池封止材用シート。
- 上記シートの上記左右領域と上記中間領域の架橋剤の種類が同じ場合、上記各領域におけるエチレンビニルアセテート共重合体樹脂100重量部に対し、上記左右領域における架橋剤の含量は1.6〜3重量部であり、上記中間領域における架橋剤の含量は0.1〜1.5重量部であることを特徴とする請求項3に記載の太陽電池封止材用シート。
- 上記シートの上記各領域は、トリアリルイソシアヌレート、トリアリルシアヌレート、ジアリルフタレート、ジアリルフマレート、ジアリルマレエート、エチレングリコールジアクリレート、エチレングリコールジメタクリレート、及びトリメチオールプロパントリメタクリレート中から1種以上選ばられる架橋助剤をさらに含んでなることを特徴とする請求項1また2に記載の太陽電池封止材用シート。
- 上記シートの上記各領域は、2-ヒドロキシ-4-メトキシベンゾフェノン、2-ヒドロキシ-4-メトキシ-2'-カルボキシベンゾフェノン、2-ヒドロキシ-4-オクトキシベンゾフェノン、2-ヒドロキシ-4-n-ドデシルオキシベンゾフェノン、2-ヒドロキシ-4-n-オクタデシルオキシベンゾフェノン、2-ヒドロキシ-4-ベンジルオキシベンゾフェノン、2-ヒドロキシ-4-メトキシ-5-スルホベンゾフェノン、2-ヒドロキシ-5-クロロベンゾフェノン、2,4-ジヒドロキシベンゾフェノン、2,2'-ジヒドロキシ-4-メトキシベンゾフェノン、2,2'-ジヒドロキシ-4,4'-ジメトキシベンゾフェノン、及び2,2',4,4'-テトラヒドロキシベンゾフェノン中から1種以上選ばれる紫外線吸収剤をさらに含んでなることを特徴とする請求項1または2に記載の太陽電池封止材用シート。
- 上記シートの上記各領域は、ビス-2,2,6,6,-テトラメチル-4-ピペリジニルセバケート、ビス-1-メチル-2,2,6,6,-テトラメチル-4-ピペリジニルセバケート、ビス-1-オクチルオキシ-2,2,6,6,-テトラメチル-4-ピペリジニルセバケート、2-(2'-ヒドロキシ-3',5'-ジ-tert-ブチルフェニル)ベンゾトリアゾール、2-(2-ヒドロキシ-3,5'-ジ-tert-アミルフェニル)-2H-ベンゾトリアゾール、及びポリメチルプロピル-3-オキソ-(4-(2,2,6,6-テトラメチル-4-ピペリジニル)シロキサン中から1種以上選ばれる紫外線安定剤をさらに含んでなることを特徴とする請求項1または2に記載の太陽電池封止材用シート。
- 上記シートの上記各領域は、γ-メタクリロキシプロピルトリメトキシシラン、N-(β―アミノエチル)-γ-アミノプロピルトリメトキシシラン、N-(β―アミノエチル)-γ-アミノプロピルメチルジメトキシシラン、γ-アミノプロピルトリエトキシシラン、γ-グリシドキシプロピルトリメトキシシラン中から1種以上選ばれるシランカップリング剤をさらに含んでなることを特徴とする請求項1または2に記載の太陽電池封止材用シート。
- 上記シートは、上記シートの左右領域をなす樹脂組成物と中間領域をなす樹脂組成物が互いに異なる押出機で溶融排出され、上記左右領域それぞれの押出し物は中間領域の押出し物と、T-ダイ内部で境界をなして合体され一つのメルトフローを形成して、シート状に排出され単一シートを形成することにより製造されることを特徴とする請求項1または2に記載の太陽電池封止材用シート。
- 上記シートは、上記左右領域をなすシートと上記中間領域をなすシートがそれぞれ別個の押出機と別途のT-ダイを通じて別途に形成され、上記別途に形成された左右領域シートと中間領域シートとを融着ロールにおいて境界面が合着されるように融着させることにより製造されることを特徴とする請求項1または2に記載の太陽電池封止材用シート。
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