POLYESTER FILM PREPERATION METHOD THEREOF AND MEMBRANE ELECTRODE ASSEMBLY COMPRISING SAME

An embodiment relates to a polyester-based film having low hygroscopicity, a preparation method thereof, and a membrane electrode assembly comprising the same. The polyester-based film has excellent flexibility, adhesion, and durability and satisfies a moisture absorption rate of 0.25 % or less acco...

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Bibliographische Detailangaben
Hauptverfasser:	YEON JE WON, HEO YOUNG MIN, LIM BYEONG JAE, SONG KI YOUN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	An embodiment relates to a polyester-based film having low hygroscopicity, a preparation method thereof, and a membrane electrode assembly comprising the same. The polyester-based film has excellent flexibility, adhesion, and durability and satisfies a moisture absorption rate of 0.25 % or less according to chemical formula 1 to have excellent hydrolysis resistance. Therefore, the polyester-based film can be applied as a film for a fuel cell sub-gasket to exhibit excellent properties. 구현예는 저흡습성을 갖는 폴리에스테르계 필름, 이의 제조 방법 및 이를 포함하는 막전극 접합체에 관한 것으로서, 상기 폴리에스테르계 필름은 유연성, 밀착성 및 내구성이 모두 우수하면서 식 1에 따른 흡습률이 0.25% 이하를 만족함으로써 우수한 내가수분해성을 가지므로, 연료 전지 서브 가스켓용 필름으로 적용되어 우수한 특성을 발휘할 수 있다.