PPO - NORYL (polyphenylene oxide)
PPO is a material of high impast strength, a minimum water absorption, dimensional stability, low flow susceptibility. It has good electrical and insulating properties, it is resistant to temperatures, self-extinguishing and is good for sterilization etc.
APPLICATION FIELDS: driving elements, fittings, machine construction (different elements), housings etc.
| Properties | Unit | Value |
| General properties | ||
| Density | g/cm3 | 1,06 |
| Moisture absorption, saturation 23°C | % | 0,1 | Water absorption, saturation | % | 0,2 |
| Mechanical properties | ||
| Yield stress | N/mm2 | 45 |
| Elongation at break (yieldpoint) | % | 50 |
| Modulus of longitudinal elasticity, tension | N/mm2 | 2400 | Ball indentation hardness, 30 sec. value H 961/30 | N/mm2 | 85 |
| Notched impact strength | kJ/m2 | without friction |
| Notched impact strength (Charpy) | kJ/m2 | >15 |
| Stress in time unit (1% 1000h) | N/mm2 | 21 |
| Electrical properties | ||
| Volume resistivity | Ohm cm | 10Exp17 |
| Dielectric constant | 10E x p6 Hz | 2,6 |
| Dielectric loss factor | 10E x p6 Hz | 0,001 |
| Dielectric strength | kV/mm | 50 |
| Thermal properties | ||
| Max. temperature for using (short-term) | °C | 110 |
| Max. temperature for using (long-term) | °C | 85 |
| Resistance to heat distortion A (ISO-R 75) | °C | 130 |
| Resistance to heat distortion B (ISO-R 75) | °C | 140 |
| Coefficient of linear expansion between 23 and 100°C | 10ExpE5x1/K | 7 |
| Thermal conductivity at 23°C | W/Km | 0,16 |
| Flammability according to UL standard 94 | V1 | |
| Melting point | °C | 250 |