KR20100135369A - 고내열성 유/무기 피복층을 갖는 폴리에틸렌계 복합 미세다공막 - Google Patents
고내열성 유/무기 피복층을 갖는 폴리에틸렌계 복합 미세다공막 Download PDFInfo
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Abstract
Description
Claims (9)
- 폴리에틸렌계 미세다공막 표면의 적어도 한 면 이상에, 용융온도 또는 유리전이 온도가 170℃ 내지 500℃인 내열성 수지 및 무기물 입자를 동시에 포함하여 형성된 복합 미세다공막으로서,(1) 피복층을 포함한 전체 복합막의 투과도(Gurley)가 300sec이하이며,(2) 150℃ 1시간 수축률이 종/횡방향 모두 0 ~ 3%이며,(3) TMA 최대 수축률이 3%이하이며 Meltdown 온도가 145℃ ~ 200℃인 것.을 포함하는 것을 특징으로 하는 폴리에틸렌계 복합 미세다공막.
- 제 1항에 있어서, 피복층을 형성하는 내열성 수지는 폴리페닐설폰(polyphenylsulfone), 폴리아릴아마이드(polyarylamide), 폴리아릴레이트(polyarylate)인 것을 특징으로 하는 폴리에틸렌계 복합 미세다공막.
- 제 1항에 있어서, 상기 무기물 입자는 직경이 0.1 내지 2um인 CaCO3, Al2O3, SiO2, BaTiO3, TiO2중 적어도 1종 이상을 포함하는 것을 특징으로 하는 폴리에틸렌계 복합 미세다공막.
- 제 1항에 있어서, 내열성 수지와 무기물의 부피비가 30/70 ~ 10/90인 피복층을 갖는 폴리에틸렌계 복합 미세다공막.
- 제 1항에 있어서, 피복층의 총 두께는 폴리에틸렌계 미세다공막 두께의 10 ~ 60%이며, 피복층 자체의 공극률이 15 ~ 60%인 것을 특징으로 하는 폴리에틸렌계 복합 미세다공막.
- 고내열성 다공성 피복층 제조방법에 있어서,(1) 폴리페닐설폰(polyphenylsulfone), 폴리아릴아마이드(polyarylamide), 폴리아릴레이트(polyarylate)에서 선택되는 하나 이상의 내열성 수지를 용매에 혼합 및 용해하는 단계;(2) 혼합용액에 직경이 0.1 내지 2um인 CaCO3, Al2O3, SiO2, BaTiO3, TiO2중 적어도 1종 이상의 무기물 입자를 분산하여 혼합 용액을 제조하는 단계;(3) 상기 제조된 내열성 수지와 무기물의 부피비가 30/70 ~ 10/90로 포함하는 혼합 용액을 폴리에틸렌계 미세다공막 표면의 한면 또는 양면에 도포하는 단계;(4) 상기 형성된 피복층 내에 잔존하는 용매를 건조에 의해 제거하는 단계;를 포함하는 피복층의 총 두께는 폴리에틸렌계 미세다공막 두께의 10 ~ 60%이며, 피복층 자체의 공극률이 15 ~ 60%인 것을 특징으로 하는 고내열성 다공성 피복층의 제조방법.
- 제 7항에 있어서, 피복층을 형성하기 위한 혼합용액의 제조는 용매 100중량부에, 내열성 수지 및 무기물 입자를 포함하는 고형분 함량이 8 ~ 35중량부 비율인 것을 특징으로 하는 폴리에틸렌계 복합 미세다공막.
- 제1항의 폴리에틸렌계 복합 미세다공막이 포함된 전지용 세퍼레이터.
- 제1항의 세퍼레이터가 포함된 리튬이온전지 및 연료전지 등의 전지용 기재(Battery devices)
Priority Applications (7)
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KR1020090053696A KR20100135369A (ko) | 2009-06-17 | 2009-06-17 | 고내열성 유/무기 피복층을 갖는 폴리에틸렌계 복합 미세다공막 |
TW99119646A TW201100254A (en) | 2009-06-17 | 2010-06-17 | Microporous polyethylene film with thermally stable hybrid-composite layers |
PCT/KR2010/003913 WO2010147407A2 (en) | 2009-06-17 | 2010-06-17 | Microporous polyethylene film with thermally stable hybrid-composite layers |
CN201080024890.XA CN102459439B (zh) | 2009-06-17 | 2010-06-17 | 具有高耐热性有机/无机涂层的聚乙烯类复合微多孔膜 |
JP2012514894A JP5431581B2 (ja) | 2009-06-17 | 2010-06-17 | 高耐熱性有機/無機被覆層を有するポリエチレン系複合微多孔膜 |
US13/320,863 US20120077113A1 (en) | 2009-06-17 | 2010-06-17 | Microporous polyethylene film with thermally stable hybrid-composite layers |
EP10789734.0A EP2443186B1 (en) | 2009-06-17 | 2010-06-17 | Microporous polyethylene film with thermally stable hybrid-composite layers |
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EP (1) | EP2443186B1 (ko) |
JP (1) | JP5431581B2 (ko) |
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- 2010-06-17 US US13/320,863 patent/US20120077113A1/en not_active Abandoned
- 2010-06-17 CN CN201080024890.XA patent/CN102459439B/zh active Active
- 2010-06-17 WO PCT/KR2010/003913 patent/WO2010147407A2/en active Application Filing
- 2010-06-17 EP EP10789734.0A patent/EP2443186B1/en active Active
- 2010-06-17 TW TW99119646A patent/TW201100254A/zh unknown
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WO2013066012A1 (en) * | 2011-11-03 | 2013-05-10 | Sk Innovation Co.,Ltd. | Micro-porous polyolefin composite film having excellent heat resistance and stability and method for producing the same |
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KR20170064702A (ko) * | 2015-12-02 | 2017-06-12 | 에스케이이노베이션 주식회사 | 내열성 및 셧다운 특성이 우수한 이차전지용 분리막 |
CN114270616A (zh) * | 2019-08-22 | 2022-04-01 | G材料有限责任公司 | 用于锂二次电池的复合隔膜及其制造方法 |
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EP2443186B1 (en) | 2016-02-17 |
CN102459439B (zh) | 2014-12-03 |
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TW201100254A (en) | 2011-01-01 |
WO2010147407A2 (en) | 2010-12-23 |
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