JP2021140867A - 積層体およびその製造方法 - Google Patents
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- 239000010410 layer Substances 0.000 claims abstract description 21
- 125000000524 functional group Chemical group 0.000 claims abstract description 20
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Classifications
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Fuel Cell (AREA)
Abstract
Description
[1]高分子電解質膜と基材とからなる積層体であって、該積層体がポリドーパミンからなる接着層を介して積層されていることを特徴とする、積層体。
[2]基材表面に酸性官能基が導入されていることを特徴とする、上記[1]に記載の積層体。
[3]少なくとも下記3工程を経て製造することを特徴とする、上記[1]または[2]に記載の積層体の製造方法。
基材表面へのカルボキシル基の導入
厚み1mmのポリプロピレン(以下PPと略す)シートを50mm×50mmにカットし、耐圧容器に入れた。耐圧容器に82kPaの酸素ガスと8kPaのフッ素ガスを導入し、1時間保持した。次いで容器内を窒素ガスでパージし、PPシートを取り出して室温で30分間水に浸漬し、PPシート表面にカルボキシル基を導入した。カルボキシル基導入量(相対値)は、赤外分光分析(IR)測定である全反射測定法(ATR)により1710cm−1のカルボニルの吸収(導入カルボキシル基の吸収)を1460cm−1の吸収(PPのCH変角)で規格化して求めた。表1に結果を示すが、得られたカルボニルの吸光度比は0.6であり、多くのカルボキシル基がPPシート表面に導入されたことを確認した。
上記で得られたカルボキシル基導入PPシートを10mm×50mmの短冊状にカットし、ドーパミン水溶液(ドーパミン濃度1.6mg/ml、Tris‐HClでpHを8に調整)に浸漬した。容器上部を開放しドーパミン水溶液が空気と自由に接触できる状態で室温にて24時間浸漬した後、PPシートを取り出し、水洗した後乾燥させた。PPシートは黒褐色に着色しており、ポリドーパミン層の形成を確認した。
ポリドーパミン層が形成されたPPシート端部にナフィオン溶液(DE2020、ナフィオン濃度20%、デュポン製)を1cm2塗布し、塗布直後に高分子電解質膜としてテトラフルオロエチレン/パーフルオロ[2‐(ヒドロキシスルホニルエトキシ)プロピルビニルエーテル]共重合体であるナフィオン(登録商標)膜(NR212、厚み51μm、デュポン製、10mm×50mmの短冊状にカット)をナフィオン溶液塗布部分に積層し、荷重を1kg印加した状態で1時間保持した。1時間後荷重を除き、窒素下で乾燥させ、積層体を得た。
上記の積層体の引張せん断接着強度を測定した。チャック間距離を20mm、引張速度1mm/分で測定を行い、6検体の平均値から引張せん断接着強度、引張破断伸びを算出した。結果を表1に示すが、引張せん断接着強度は0.09MPa、引張破断伸びは99%であり、PPシートとナフィオン膜は強固に接着していた。なお、6検体全てにおいて、積層体の接着界面での剥離は認められず、破壊はナフィオン膜の凝集破壊であった。
基材表面へのカルボキシル基導入において、フッ素ガス導入分圧を5kPaに変更した以外は実施例1と同様の操作を行い、積層体を調製した。結果を表1に示すが、接着せん断強度は0.10MPa、引張破断伸びは97%であり、PPシートとナフィオン膜は強固に接着していた。なお、6検体全てにおいて、積層体の接着界面での剥離は認められず、破壊はナフィオン膜の凝集破壊であった。
PPシート表面へのカルボキシル基の導入反応においてフッ素ガスを用いなかったこと、及び、ポリドーパミン層の形成を行わなかったことを除いて、実施例1と同様にPPシートとナフィオン膜の積層を行った。PPシートとナフィオン膜は全く接着せず、接着強度は測定できなかった。
PPシート表面へのカルボキシル基の導入反応においてフッ素ガスを用いなかったことを除いて、実施例1と同様にPPシートとナフィオン膜の積層を行った。PPシートのナフィオン膜は荷重印加状態では積層状態を維持していたものの、乾燥の過程で剥離してしまい、積層体を得ることはできなかった。
Claims (3)
- 高分子電解質膜と基材が接着層を介して積層されている積層体であって、該接着層がポリドーパミンからなることを特徴とする、積層体。
- 基材が表面に酸性官能基を有することを特徴とする、請求項1に記載の積層体。
- 少なくとも下記工程1〜3を含むことを特徴とする、請求項1又は2に記載の積層体の製造方法。
工程1:基材表面に酸性官能基を導入する工程。
工程2:基材表面にポリドーパミン層を形成させる工程。
工程3:基材表面または高分子電解質膜表面の少なくとも一方に高分子電解質溶液を塗布した後、両者を積層する工程。
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JP2020034706A JP2021140867A (ja) | 2020-03-02 | 2020-03-02 | 積層体およびその製造方法 |
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JP2021140867A true JP2021140867A (ja) | 2021-09-16 |
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JP2020034706A Pending JP2021140867A (ja) | 2020-03-02 | 2020-03-02 | 積層体およびその製造方法 |
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2020
- 2020-03-02 JP JP2020034706A patent/JP2021140867A/ja active Pending
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