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E-mail: info@daniuflex.com
Polyimide Film with FEP/PFA Coated
The polyimide composite film produced by our company has good heat resistance, thin and uniform thickness of insulating layer, good sealing, high and low temperature resistance, not easy to burn, flame retardant up to UL-94/V-0 level, improves the moisture-proof performance of the wire, electrical properties, cut-through resistance, the film is flexible, so that the wire in the bending of the insulating layer is intact, no rupture phenomenon. Suitable for H class and F class motor winding resistance.
Thickness of turn-to-turn insulation is about 1/3 thinner than double filament enamelled wire, good thermal conductivity, reducing the size of the motor and improving the reliability of the motor. Widely used in aviation special cables, parcel metal conductor, high voltage motors, locomotive traction motors, deep-well submersible oil pump motors and metallurgical motors, etc., to play the role of insulation, corrosion prevention.
Main Features as below:
| Item | Direction | units | Test Methods | Test Values | ||||
|---|---|---|---|---|---|---|---|---|
| 25um | 22um | 35um | 45um | 75um | ||||
| Tensile Modulus | MD/TD | Gpa | ASTM D882.20℃ | 5.6 | 4.4 | 4.6 | 4.8 | 5 |
| Tensile Stength | MD | Mpa | ASTM D882.20℃ | 244 | 200 | 220 | 250 | 280 |
| Elongation at Break | MD | % | ASTM D882.20℃ | 65 | 65 | 70 | 75 | 80 |
| Coefficient of Thermal Expansion | MD/TD | ppm/℃ | T.M.A 100-200℃ | 15 | ||||
| Shrinkage | / | % | 200℃ 2hr IPC-TM-650 2.2.4Method A | ≤0.05 | ||||
| Water Absorption | / | % | ASTM D570 20℃ 24hr | 2 | ||||
| Dielectric Constant | / | —— | IPC-TM-650 2.5.5.3 1MHz | 2.8 | ||||
| Dielectric Dissipation Factor | / | —— | IPC-TM-650 2.5.5.3 | 0.0035 | ||||
| Volume Resistivity | / | Ω .cm | ASTM D257 500V 20℃ | >10^16 | ||||
| Dielecric Strength | / | Kv/mm | ASTM D149 60Hz, 20℃ | >220 | ||||
| Specific Heat | / | J/(kg.k) | GB/T 19466.1-2004 | 0.90x 10^3 | ||||
| Thermal Conductivity | / | W/(m.k) | ASTM E1461-13 | 0.095 | ||||
| / | g/cm3 | ASTM D792-13Method B | 1.44 | |||||
| Storage | Material should be stored in a dry and clean room, and the inner coiled film must be suspended in the box and not erected. It should stay away from the source of fire, heating or direct sunlight. The warranty period is 2 years. |