| 摘要 |
The present invention relates to a capacitor film comprising a biaxially oriented polypropylene wherein: a) said polypropylene has a draw ratio in machine direction of at least 4.0 and a draw ratio in transverse direction of at least 4.0, and b) said polypropylene has an electrical breakdown strength EB 63% according to IEC 60243-part 1 (1988) of at least 300 kV/mm at a draw ratio in machine direction and in transverse direction of 4.0. |
