| Polyimide film is made from the synthetic resin polymerized by pryomellitic anhydride and phenylether through salivating and continuous bi-directional drawing.It has excellent heat stability,mechanical and dielectric strength,radiation and chemical resistance,used as a perfect class-180 electrical insulation meterial. | |||||||||||||||
| * We are offering in rolls,sheets or even customer-oriented shapes. | |||||||||||||||
| * Please consult us for special thickness | |||||||||||||||
| Typical items: | |||||||||||||||
| Type | Unit | PIF-25H | PIF-50H | ||||||||||||
| Typical thickness | mm | 0.025 | 0.05 | ||||||||||||
| Thickness tolerance(+/-) | mm | 0.003 | 0.003 | ||||||||||||
| Width | mm | 10~610 as customers' demand | |||||||||||||
| Supply size | Supply in rolls;core diameter 53 or 76 as customers' demand | ||||||||||||||
| Typical properties: | |||||||||||||||
| Property items | Test methods | Unit | Typical value | ||||||||||||
| Visual | The suface should be even and free from wrinkle,blister,adhesive particle and impurity | ||||||||||||||
| Density | ASTM D1505 | g/cm3 | 1.42 | ||||||||||||
| Tensile strength Min. | IPC-TM-650 Method 2.4.19 | Mpa | 180 | ||||||||||||
| Elongation Min. | % | 45 | |||||||||||||
| Tensile modulus(MD) | / | 2.3 | |||||||||||||
| Dielectric strength Min. | ASTM D149 | KV/mm | 180 | ||||||||||||
| Volume resistivity Min. | ASTM D257 | Ω.m | 1x1010 | ||||||||||||
| Surface resistivity Min. | ASTM D257 | Ω | 1x1014 | ||||||||||||
| Dielectric constant | IPC-TM-650 Method 2.5.5.3(1MHz) | / | 3.4 | ||||||||||||
| Dissipation factor | / | 0.0018 | |||||||||||||
| Dimensional stability Max. | IPC TM650 Method 2.2.4A | % | 0.25 | ||||||||||||
| Coefficient of thermal expansion | Ppm/oC | 27 | |||||||||||||
| Moisture absorption | IPC-TM-650 Method 2.6.2 | % | 2.5 | ||||||||||||
| Flammability | UL-94 | V-0 | |||||||||||||
Present Position : 
