Nature Color Pure PEEK660G Pellets for Injection
There are three main types of PEEK materials from PRES: 660G, 880G, and 990G
The difference between them lies in their molecular weight, therefore they have different melt viscosities and flow rates.
660G has a small molecular weight and a melt index of approximately 80g/10min. It has high fluidity and is easy to process and shape. Therefore, 660G is often used to manufacture PEEK films, PEEK multifilaments, etc.
At the same time, it also has excellent comprehensive performance:
●High temperature resistance
●Corrosion resistance
●Flame retardancy and low smoke properties
●Wear resistance
●High resilience
●Excellent electrical insulation performance
●Good dimensional stability
PRSPEEK®-660G
| Test Item | Test Method | Conditions | Units | Test Data |
| Mechanical Properties |
| Tensile Strength | ISO 527 | Yield, 23℃ | MPa | 110 |
| Tensile Elongation | ISO 527 | Break, 23℃ | % | 25 |
| Flexural Strength | ISO 178 | Yield,23℃ | MPa | 175 |
| Flexural Modulus | ISO 178 | 23℃ | GPa | 4.3 |
| Compressive Strength | ISO 604 | 23℃ | MPa | 130 |
| Charpy Impact Strength | ISO 179/1eA | Notched | kJ m-2 | 4 |
| ISO 179/1U | Unnotched | kJ m-2 | - |
| Izod Impact Strength | ISO 180/A | Notched | kJ m-2 | 5 |
| ISO 180/U | Unnotched | kJ m-2 | - |
| Mould Shrinkage | ISO 294-4 | Along Flow | % | 1 |
| Across Flow | % | 1.3 |
| Thermal Properties |
| Melting Point | ISO 11357 | - | ℃ | 343 |
| Glass Transition (Tg) | ISO 11357 | Onset | ℃ | 143 |
| Special Heat Capacity | DSC | 23℃ | kJ kg-1 ℃-1 | 2.2 |
Coefficient of Thermal
Expansion | ISO 11359 | Along flow below Tg | ppm K-1 | 50 |
| Along flow above Tg | ppm K-1 | 120 |
Heat Deflection
Temperature | ISO 75 | 1.8 Mpa | ℃ | 156 |
| Thermal Conductivity | ISO 22007-4 | 23℃ | W m-1 K-1 | 0.29 |
| Flow |
| Melt Index | ISO 1133 | 380℃,5kg | g 10min-1 | 80 |
| Miscellaneous |
| Density | ISO 1183 | Crystalline | gcm-3 | 1.3 |
| Amorphous | gcm-3 | 1.26 |
| Shore D Hardness | ISO 868 | 23℃ |
| 85 |
Water Absorption（3.2mm
thick Tensile Bar）
（by immersion） | ISO 62 | 24h, 23℃ | % | 0.07 |
| Equilibrium, 23℃ | % | 0.4 |
| Electrical Properties |
| Dielectric Strength | IEC 60243-1 | 2mm | kV mm-1 | 23 |
Comparative Tracking
Index | IEC 60112 | - | V | 150 |
| Dielectric Constant | IEC 60250 | 23℃, 1kHz | - | 3.2 |
| 23℃,50Hz | - | - |
| Loss Tangent | IEC 60250 | 23℃, 1MHz | - | 0.004 |
| Volume Resistivity | IEC 60093 | 23℃,1V | Ω cm | 1016 * |
| 275℃ | Ω cm | 109 * |
| Injection molding |
| Nozzle temperature |
| 。C |
| 390 (380~410) |
| Zone1 Temperature |
| 。C |
| 390 (380~410) |
| Zone2 Temperature |
| 。C |
| 380 (370~400) |
| Zone3 Temperature |
| 。C |
| 370(360~390) |
| Melt Temperature |
| 。C |
| 390 (380~410) |
| Mould Temperature |
| 。C |
| 180~210 |
| Screw Speed |
| % |
| 50-80 |
| Back Pressure |
| Bar |
| 4-12 |
| Predrying |
| Drying temperature/time |
| - |
| 150°C/3h or
120°C/ over 6h |
| Water absorption |
| % |
| <0.3 |
