TPEE Celanese 3078
TPEE Celanese 3078
TPEE Celanese 3078 is a low‑hardness and low‑modulus thermoplastic polyester elastomer. It features high elasticity, excellent flex‑fatigue resistance, impact resistance (especially at low temperature), tear resistance and wear resistance.
Application Fields
Automotive Powertrain: Turbocharger air hoses, engine mount bushings.
Industrial Hydraulics: High‑pressure cylinder seals, reinforcement layers for hydraulic hoses.
Energy Equipment: Ground‑source heat pump valve seats, bearings for solar trackers.
Heavy‑Duty Machinery: Mine conveyor rollers, cushion pads for track shoes.
Physical Properties
| Parameter | Test Standard | Typical Value | Unit | Performance Orientation |
|---|---|---|---|---|
| Density | ISO 1183 | 1.25 | g/cm³ | Compatibility for high‑filled systems |
| Melt Flow Index (220℃/2.16kg) | ASTM D1238 | 7‑10 | g/10min | Medium flow for optimized strength |
| Tensile Strength | ISO 527 | 42 | MPa | Core indicator for high‑temperature load‑bearing |
| Elongation at Break | ISO 527 | 400 | % | Toughness balance under high rigidity |
| Flexural Modulus | ASTM D790 | 450 | MPa | Ideal stiffness for structural supports |
| Shore D Hardness | ISO 868 | 55 | — | High‑hardness wear‑resistant solution |
| Heat‑Distortion Temperature (1.82 MPa) | ISO 75 | 145 | ℃ | Critical value for high‑temperature service |
| Volume Resistivity | IEC 60093 | 5×10¹⁴ | Ω·cm | Suitable for electrical insulation protection |
Processing Technology
| Process Parameter | Recommended Range | Critical Control Points |
|---|---|---|
| Drying Condition | 100℃ × 4 h (dew point ‑30℃) | Moisture content ≤0.03% (avoid bubbles / silver streaks) |
| Melt Temperature | Injection molding: 210‑230℃ | Thermal‑oxidative degradation above 240℃ (nitrogen protection required) |
| Mold Temperature | 60‑85℃ | Weld lines occur below 50℃; longer cycle time above 95℃ |
| Injection Pressure | 80‑130 MPa | High pressure improves glass‑fiber orientation (for reinforced grades only) |
| Screw Speed | 40‑80 rpm | Control shear heat (temperature rise ≤15℃) |
| Regrind Usage | ≤30% (pre‑drying required) | Impact strength drops ≤20% after three recycling cycles |
Note: All information above is for reference only!
