| 摘要 |
PURPOSE: A microporous polymer membrane and a manufacturing method thereof are provided to improve dimensional stability, and to offer easy moldability of a thin film while adding high winding speed. CONSTITUTION: The pore size of a microporous polymer membrane is extended to 0.05 ~ 1μm. The porosity of the polymer membrane is 30 ~ 70% having the tensile strength of 400 ~ 3,000 kgf / cm^2. The microporous polymer membrane includes one or more ultra high molecular Weight polyethylene, High molecular weight polyethylene, High density polyethylene, Low density polyethylene, Linear low density polyethylene, Polypropylene, High crystalline polypropylene, and Polyethylene-proopylene Co-polymer. The microporous polymer membrane is used for a lithium battery. |
