| About |
|---|
| KEPSTAN™ is a high performance thermoplastic material, based on PolyEtherKetoneKetone (PEKK) highly stable chemical backbone. Its semi crystalline structure in solid state offers an outstanding combination of mechanical and thermal strength together with chemical and fire resistance. The 8000 Series offers the highest glass transition temperature and the highest degree of crystallinity, leading to the best tensile and compression strengths among the wide range of PEKK copolymers within the KEPSTAN™ product range. KEPSTAN™ 8000 Series includes a low flow grade, KEPSTAN™ 8001, and a medium flow grade, KEPSTAN™ 8002, both unfilled pure PEKK resins designed to meet the requirements of a broad range of melt processing technologies, including among others extrusion of stock shapes, tubes, films, extrusion compression, compression molding, injection molding of thick or complex and thin-walled parts. KEPSTAN™ is available in pellet form and in powder form with different particle sizes. Standard packaging includes 20 kg boxes for pellets and 10 kg boxes for powders.&& |
| Product Description | |
|---|---|
| Supplier | Arkema |
| Generic | PEKK |
| Material Status | Commercial: Active |
| Features | Low liquidity,Flame Characteristics,Hypocrystalline,Good Tensile Strength,Copolymer,Good compressive strength,Solvent resistance |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.29 | g/cm³ | ISO 1183 |
| Melt Volume Rate | |||
| 380℃，5 kg | 15.0 | cm³/10min | ISO 1133 |
| Water absorption rate | |||
| 23℃，24hr，2.00 mm | 0.20 | % | |
| Saturation, 23 ℃ | 0.50 | % | |
| Equilibrium, 23 ℃, 50% RH | 0.10 | % | |
| Equilibrium, 23 ℃, 50% RH, 2.00 mm | 0.010 | % | |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | |||
| 23 ℃, injection molding | 3800 | MPa | ISO 527-2/1BA/1 |
| tensile strength | |||
| Yield, 23 ℃, injection molding | 125 | MPa | |
| Yield, 23 ℃, injection molding | 105 | MPa | |
| Yield, 125 ℃, injection molding | 59.0 | MPa | |
| Yield, 175 ℃, injection molding | 22.0 | MPa | |
| Yield, 230 ℃, injection molding | 11.0 | MPa | |
| Tensile strain | |||
| Yield, 23 ℃, injection molding | 5.2 | % | |
| Fracture, 23 ℃, injection molding | 30 | % | |
| Fracture, 125 ℃, injection molding | > 100 | % | |
| Bending modulus | |||
| 23 ℃, injection molding | 3900 | MPa | ISO 178 |
| bending strength | |||
| 23 ℃, injection molding | < 163 | MPa | ISO 178 |
| Compression modulus | |||
| 23℃ | 3800 | MPa | ISO 604/1 |
| compressive strength | |||
| 23℃ | 146 | MPa | |
| 23℃ | 171 | MPa |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | |||
| -30 ℃, injection molding | 5.0 | kJ/m² | |
| 23 ℃, injection molding | 5.0 | kJ/m² | |
| Charpy Unnotch Impact strength | |||
| -30 ℃, injection molding, localized fracture | 50 | kJ/m² | |
| 23 ℃, injection molding | 无断裂 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed | 250 | ℃ | ISO 75-2/Bf |
| 1.8 MPa, unannealed | 175 | ℃ | ISO 75-2/Af |
| Glass transition temperature | 165 | ℃ | |
| Melting temperature | |||
| DSC | 357 | ℃ | |
| Linear coefficient of thermal expansion | |||
| MD | |||
| -100 to 165 ℃ | 2.3E-5 | cm/cm/℃ | |
| 165 to 300 ℃ | 2.3E-4 | cm/cm/℃ | |
| specific heat | |||
| 23℃ | 1020 | J/kg/℃ |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+16 | ohms | ASTM D257 |
| Volume resistivity | |||
| 23℃ | 1.0E+16 | ohms·cm | ASTM D257 |
| Dielectric strength | |||
| 0.1 mm | 84 | kV/mm | IEC 60243-1 |
| Relative permittivity | |||
| 23℃，1 MHz | 2.60 | IEC 60250 | |
| Dissipation factor | |||
| 23℃，1 kHz | 7.0E-3 | IEC 60250 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| 0.80 mm | V-0 | UL 94 | |
| Extreme oxygen index | 35 | % | ISO 4589-2 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Extrusion | Nominal value | Unit | Test method |
| Drying temperature | |||
| A | 150 | °C | |
| B | 120 | °C | |
| Drying time | |||
| A | 3.0 to 4.0 | hr | |
| B | 6.0 to 8.0 | hr | |
| Barrel rear temperature | 350 | °C | |
| Barrel middle temperature | 375 | °C | |
| Barrel front temperature | 375 | °C | |
| Nozzle temperature | 385 | °C | |
| Processing (melt) temperature | 375 to 385 | °C | |
| Mold temperature | 220 to 240 | °C | |
| Drying temperature | 150 | °C | |
| Drying time | 3.0 to 4.0 | hr | |
| Barrel 1 zone temperature | 340 | °C | |
| Barrel 2 zone temperature | 360 | °C | |
| Barrel 3 zone temperature | 380 | °C | |
| Barrel 4 zone temperature | 380 | °C | |
| Melt temperature | 375 to 385 | °C | |
| Nozzle temperature | 370 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 24hr |
| 3. Extruded |
| 4. 20°C/min |
| 5. 20°C/min, 2nd heating |
| 6. 1.6 mm |
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