PVDF (polivinylidene fluoride)
PVDF is very resistant to abrasion, ageing, chemicals, high temperatures. It is very durable, rigid. Furthermore, it has a minimal water absorption and is weather resistant.
APPLICATION FIELDS: sewage pipes, instrument construction, seals, drainage, cable mantles, nuclear technology, pump elements, astronautics, pipelines, water seals.
| Properties | Unit | Value |
| General properties | ||
| Density | g/cm3 | 1,78 |
| Moisture absorption, saturation 23°C | % | 0,04 | Water absorption, saturation | % | 0,04 |
| Mechanical properties | ||
| Yield stress | N/mm2 | 50 |
| Elongation at break (yieldpoint) | % | 20 |
| Modulus of longitudinal elasticity, tension | N/mm2 | 2000 | Ball indentation hardness, 30 sec. value H 961/30 | N/mm2 | 80 |
| Notched impact strength | kJ/m2 | without friction |
| Notched impact strength (Charpy) | kJ/m2 | 6 |
| Stress in time unit (1% 1000h) | N/mm2 | 3 |
| Electrical properties | ||
| Volume resistivity | Ohm cm | 10Exp15 |
| Dielectric constant | 10E x p6 Hz | 8 |
| Dielectric loss factor | 10E x p6 Hz | 0,08 |
| Dielectric strength | kV/mm | 60 |
| Surface resistance | Ohm | 10Exp13 |
| Thermal properties | ||
| Max. temperature for using (short-term) | °C | 170 |
| Max. temperature for using (long-term) | °C | 145 |
| Resistance to heat distortion A (ISO-R 75) | °C | 110 |
| Resistance to heat distortion B (ISO-R 75) | °C | 150 |
| Coefficient of linear expansion between 23 and 100°C | 10ExpE5x1/K | 12 |
| Thermal conductivity at 23°C | W/Km | 0,13 |
| Flammability according to UL standard 94 | VO | |
| Melting point | °C | 180 |