| About |
|---|
| PREPERM® 255 is a special compound based on Premix proprietary PPE technology. Extremely low dissipation factor (0.0005) makes PREPERM® 255 an excellent material for high frequency applications. PREPERM® 255 offers stable dielectric constant over wide frequency and wide temperature range. PREPERM® retains its physical properties at very low (-78°C) temperatures. PREPERM® 255 can be injection moulded or extruded. Applications include structural parts for antennas in base stations, point to point, wlan, mobile phones etc. Devices made out of PREPERM® 255 can operate at very high frequencies as PREPERM® 255 offers stable performance even at 120 GHz.&& |
| Product Description | |
|---|---|
| Supplier | Premix Oy |
| Generic | PPO(PPE) |
| Material Status | Commercial: Active |
| Features | Low temperature toughness,Low temperature strength,V-1 |
| Availabilitys | North America,Latin America,Asia Pacific,Europe |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.05 | g/cm³ | ISO 1183 |
| Melt Flow Rate | ISO 1133 | ||
| 300℃，2.16kg | 5.0 | g/10min | ISO 1133 |
| 300℃，5.0kg | 15 | g/10min | ISO 1133 |
| Shrinkage rate | |||
| MD | 0.90 | % | ISO 294-4 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | ISO 527-2 | ||
| Yield, 4 mm | 65.0 | MPa | ISO 527-2 |
| 4 mm | 45.0 | MPa | ISO 527-2 |
| Tensile strain | ISO 527-2 | ||
| Yield, 4 mm | 10 | % | ISO 527-2 |
| Fracture, 4 mm | 40 | % | ISO 527-2 |
| Bending modulus | |||
| 4 mm | 2200 | MPa | ISO 178 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | ISO 180 | ||
| -78℃ | 10 | kJ/m² | ISO 180 |
| -20℃ | 10 | kJ/m² | ISO 180 |
| 23℃ | 20 | kJ/m² | ISO 180 |
| Notched impact strength of cantilever beam | ISO 180 | ||
| -78℃ | 无断裂 | ISO 180 | |
| -20℃ | 无断裂 | ISO 180 | |
| 23℃ | 无断裂 | ISO 180 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed | 190 | ℃ | ISO 75-2/Bf |
| 1.8 MPa, unannealed | 167 | ℃ | ISO 75-2/Af |
| Vicat Softening Temp | |||
| A50 | 210 | ℃ | ISO 306/A50 |
| B50 | 160 | ℃ | ISO 306 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Dielectric constant | |||
| 1.00 GHz | 2.55 | Internal Method | |
| Dissipation factor | |||
| 1 GHz | 5.0E-4 | Internal Method |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| 4.00 mm | V-1 | UL 94 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Extrusion | Nominal value | Unit | Test method |
| Drying temperature | 120 to 140 | °C | |
| Drying time | 2.0 to 4.0 | hr | |
| Processing (melt) temperature | 280 to 300 | °C | |
| Mold temperature | 80 to 140 | °C | |
| Injection pressure | 60.0 to 80.0 | MPa | |
| Drying temperature | 120 to 140 | °C | |
| Drying time | 2.0 to 4.0 | hr | |
| Melt temperature | 260 to 280 | °C | |
| Nozzle temperature | 260 to 300 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 4 mm thickness |
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