| abstract |
Comprising biphenyltetracarboxylic acid units and phenylenediamine units, having a thickness of 5 to 150 μm and stretching of 45 to 90%;n n n When the thickness is in the range of 5 μm or more and less than 50 μm, it has a tensile modulus of 750 to 1,300 kg / mm 2 and has a tear resistance of 350 to 1,500 g / mm;n n n When the thickness is 50 µm or more and 100 µm or less, it has a tensile modulus of 650 to 1,200 kg / mm 2 and a tear resistance of 550 to 1,500 g / mm;n n n An aromatic polyimide film having a tensile modulus of 550 to 1,100 kg / mm 2 and a tear resistance of 550 to 1,500 g / mm when the thickness is more than 100 µm and 150 µm or less. Here, the tear resistance and tensile modulus are measured by an Elmendorf tear tester. |