MICROPOROUS POLYOLEFIN MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY
    31.
    发明申请
    MICROPOROUS POLYOLEFIN MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY 审中-公开
    微波多孔膜,电池分离器和电池

    公开(公告)号:US20090170005A1

    公开(公告)日:2009-07-02

    申请号:US12092166

    申请日:2006-10-31

    IPC分类号: H01M2/16

    摘要: A microporous polyolefin membrane made of a polyethylene resin as a main component, and having (a) a shutdown temperature of 135° C. or lower, at which the air permeability measured while heating at a temperature-elevating speed of 5° C./minute reaches 1×105 sec/100 cm3, (b) an air permeability change ratio of 1×104 sec/100 cm3/° C. or more, which is a gradient of a curve representing the dependency of the above air permeability on a temperature at the air permeability of 1×104 sec/100 cm3, and (c) a meltdown temperature of 150° C. or higher, at which the air permeability measured while further heating after reaching the above shutdown temperature becomes 1×105 sec/100 cm3 again.

    摘要翻译: 一种由聚乙烯树脂作为主要成分制成的微孔聚烯烃膜,其特征在于,(a)在温度升高速度为5℃的同时测定的透气度为135℃以下的关闭温度。 分钟达到1×10 5秒/ 100cm 3,(b)1×104秒/ 100cm 3 /℃以上的透气度变化率,其为表示上述透气度对空气温度的依赖性的曲线的梯度 渗透率为1×104秒/ 100cm 3,(c)在达到上述关闭温度后进一步加热时测得的透气度再次为1×10 5秒/ 100cm 3的熔融温度为150℃以上。