发明名称 |
Microporous polyolefin film possessing good mechanical properties and thermal stability |
摘要 |
<p>The present invention relates to a microporous polyolefin film suitable as a separator for batteries and thermal properties thereof. A microporous polyolefin film according to the present invention has a film thickness of 5-40 µm, a porosity of 30%-60%, a permeability of 2.0x10 -5 -8.0x10 -5 Darcy, a maximum pore size determined by the bubble point method of not more than 0.1 µm, a puncture strength of 0.20 N/µm or more at room temperature and 0.05 N/µm or more at 120°C, and a maximum shrinkage ratio in the transverse direction (TD) when subjected to a thickness-normalized external force in TMA (thermo-mechanical analysis) of not more than 0%. With excellent thermal stability at high temperature as well as superior puncture strength and gas permeability, the microporous polyolefin film according to the present invention is suitable for high-capacity,and high-power batteries.</p> |
申请公布号 |
EP2065953(B1) |
申请公布日期 |
2014.02.26 |
申请号 |
EP20080019522 |
申请日期 |
2008.11.07 |
申请人 |
SK INNOVATION CO., LTD. |
发明人 |
KANG, GWIGWON;RHEE, JANG-WEON;JUNG, INHWA;LEE, YOUNGKEUN;KIM, YONG KYOUNG |
分类号 |
H01M2/16;B01D69/02;B01D71/28;C08J5/18;C08L23/06 |
主分类号 |
H01M2/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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