公开(公告)号：US08597775B2

公开(公告)日：2013-12-03

申请号：US12995471

申请日：2009-05-29

申请人： Jang-Weon Rhee ,  In Hwa Jung ,  Gwig Won Kang ,  Young Keun Lee

发明人： Jang-Weon Rhee ,  In Hwa Jung ,  Gwig Won Kang ,  Young Keun Lee

IPC分类号： B32B7/02

CPC分类号： H01M2/1653 ,  B01D71/26 ,  B29C55/023 ,  B32B7/02 ,  B32B7/12 ,  B32B27/08 ,  B32B27/18 ,  B32B27/281 ,  B32B27/32 ,  B32B2250/03 ,  B32B2264/102 ,  B32B2307/306 ,  B32B2307/558 ,  B32B2307/714 ,  B32B2457/10 ,  B32B2605/00 ,  H01M2/1686 ,  H01M10/052 ,  Y10T428/24942

摘要： A microporous polyolefin multilayer film which is used as a separator for a battery is a 3 layer microporous film which is prepared by a wet process to have both surface layers containing polyethylene of 95 wt % or more having a melting temperature of 125° C. or higher, and an inner layer containing polypropylene of 50 to 90 wt % having a melting temperature of 160° C. or higher and polyethylene of 10 to 50 wt % having a melting temperature of 125° C. or higher. A thickness of the film is 9-50/M, a puncture strength is 0.15N//M or more, a permeability is 1.5×10−5 Darcy or more, a multiplication of the puncture strength and the permeability is 0.4×10−5 Darcy·N/μm or more, a shrinkage in a transverse direction at 120° C. for 1 hour is 15% or less, and a melt fracture temperature of 160° C. or higher.

摘要翻译： 用作电池隔板的微孔聚烯烃多层膜是通过湿法制备的三层微孔膜，其具有包含熔融温度为125℃的95重量％以上的聚乙烯的表面层，或者 更高，熔融温度为160℃以上的含有50〜90重量％的聚丙烯的内层和10〜50重量％的熔融温度为125℃以上的聚乙烯。 膜的厚度为9-50 / M，穿刺强度为0.15N // M以上，磁导率为1.5×10-5达西以上，穿刺强度与导磁率的乘积为0.4×10- 5达西·N / mum以上，120℃下1小时的横向收缩率为15％以下，熔融断裂温度为160℃以上。

公开(公告)号：US20110104468A1

公开(公告)日：2011-05-05

申请号：US12995471

申请日：2009-05-29

申请人： Jang-Weon Rhee ,  In Hwa Jung ,  Gwig Won Kang ,  Young Keun Lee

发明人： Jang-Weon Rhee ,  In Hwa Jung ,  Gwig Won Kang ,  Young Keun Lee

IPC分类号： B32B27/08 ,  B29C47/06

CPC分类号： H01M2/1653 ,  B01D71/26 ,  B29C55/023 ,  B32B7/02 ,  B32B7/12 ,  B32B27/08 ,  B32B27/18 ,  B32B27/281 ,  B32B27/32 ,  B32B2250/03 ,  B32B2264/102 ,  B32B2307/306 ,  B32B2307/558 ,  B32B2307/714 ,  B32B2457/10 ,  B32B2605/00 ,  H01M2/1686 ,  H01M10/052 ,  Y10T428/24942

摘要： Disclosed is a microporous polyolefin multilayer film which can be used as a separator for a battery, and a preparing method thereof. The microporous polyolefin multilayer film is a trilayer microporous film which is prepared by a wetting method to have both surface layers containing polyethylene of 95 wt % or more having a melting temperature of 125° C. or more, and an intermediate layer containing polypropylene of 50 to 90 wt % having a melting temperature of 160° C. or more and polyethylene of 10 to 50 wt % having a melting temperature of 125° C. or more, wherein a thickness of the film is 9-50 μm, a puncture strength is 0.15 N/μm or more, a permeability is 1.5×10−5 Darcy or more, a multiplication of the puncture strength and the permeability is 0.4×10−5 Darcy·N/μm or more, a contraction rate in a traverse direction at a temperature of 150° C. for 1 hour is 15% or less, and a melt fracture temperature of 160° C.

摘要翻译： 公开了可用作电池隔板的微孔聚烯烃多层膜及其制备方法。 微孔聚烯烃多层膜是通过润湿方法制备的三层微孔膜，其具有含有熔融温度为125℃以上的聚乙烯的95重量％以上的表面层和含有聚丙烯的中间层50 至90重量％，熔融温度为160℃以上的聚乙烯和10〜50重量％的熔融温度为125℃以上的聚乙烯，其中，膜的厚度为9〜50μm，穿刺强度 为0.15N /μm以上，磁导率为1.5×10-5达西以上，穿刺强度与磁导率的乘积为0.4×10-5达西·N /μm以上，横动方向的收缩率 在150℃的温度下1小时为15％以下，熔融断裂温度为160℃