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Technical data for polyimide film
No.     Description Unit Value
1 Density g/cm3 ≥1.40
2 Tensile strength kgf/mm2 -
( lengthwise & crosswise ) ≥10.0
≥10.0
3 Elongation %  
( lengthwise & crosswise ) ≥25
≥20
4 Breakdown strength kV/mm Average Min.
≥20±5°C,50Hz ≥100 ≥60
≥200±5°C,50Hz ≥80 ≥48
5    Volume resistivity Ω.cm  
≥20±5°C        ≥1x1015
≥200±5°C       ≥1x1015
6   Surface resistance coefficient Ω       ≥1x1014
7  Tangent of dielectric loss angle,  50Hz - ≤0.01
8  Dielectric coefficient 50Hz V/μm       ≤4.0  

Nominal thickness : 0.03mm±0.005mm;  0.05mm±0.007mm
 
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