BIAXIALLY STRETCHED POLYPHENYLENE SULFIDE FILM AND SECONDARY BATTERY ELECTRODE FILM COMPOSED OF SAME

Provided is a polyphenylene sulfide film which is superior in productivity of battery production, can thin an electrode material and a substrate, and has an increased battery capacity. A polyphenylene sulfide film being formed of a polyphenylene sulfide resin composition and comprising at least one...

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Bibliographische Detailangaben
Hauptverfasser: SHIMIZU, Akira, NISHIO, Shotaro
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Provided is a polyphenylene sulfide film which is superior in productivity of battery production, can thin an electrode material and a substrate, and has an increased battery capacity. A polyphenylene sulfide film being formed of a polyphenylene sulfide resin composition and comprising at least one layer, wherein the polyphenylene sulfide film has a thickness of 0.2 um or more and 30 um or less,the polyphenylene sulfide film has a tensile elongation at break of 30% or more and 150% or less in each of an MD direction and a TD direction,a relationship between the tensile elongation at break in the MD direction and the tensile elongation at break in the TD direction satisfies a formula (1), andthe polyphenylene sulfide film has a heat shrinkage rate at 180°C for 30 minutes of 4% or less in both the MD direction and the TD direction, 0.75≤SMD/STD≤1.25In the formula (1), SMD represents the tensile elongation at break in the MD direction, and STD represents the tensile elongation at break in the TD direction.