2021 Fiscal Year Final Research Report
Study on the formation process of structures in porous film manufactured by slurry drying
| Project/Area Number |
19K15343
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 27010:Transport phenomena and unit operations-related
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 多孔質膜 / 湿式プロセス / 塗布 / エネルギー関連機器 / 透過率 / 細孔径分布 / 物性評価 |
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| Outline of Final Research Achievements |
The experiment in this study was intended to control experimentally the porous structure of membrane manufactured by wetting process, in order to replicate the non-uniform structure in membrane. Specific surface area of dispersoid used as material of membrane, distribution of its diameter in slurry and gap between coating blade and substrate were coating conditions to be changed. Thickness, roughness on surface and permeability were measured to obtained porous membrane. Roughness was more affected by the particle distribution of dispersoid in slurry than its product type. Permeability became smaller in membrane manufactured with dispersoid of small specific surface area. It can be due to the deposition in more dense when dispersoid of small specific surface area is used.
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| Free Research Field |
化学工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で得られた知見は，今後の環境・エネルギーに関連した機器の部材を高性能化するために重要な示唆を与えるものである．既存の材料で作製される多孔質膜の性能を最大限活用するための成膜プロセスおよび材料の選定について，重要な知見を示した．すなわち，湿式プロセスで作製される多孔質膜の透過率や表面粗さなどの物性と成膜条件の関係に関する実例を示すとともに，ウェット膜から乾燥後の多孔質構造が形成される過程の示唆を与えた．本研究は，燃料電池の触媒層等，既に使用されている多孔質膜の性能を向上させるために，新たに材料を開発する際の方針および既存の材料を用いた場合の性能向上に関する指針になりうると考える．
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