TPEE DSM EM400
TPEE DSM EM400 (Netherlands, now Covestro)
TPEE DSM EM400 from the Netherlands (now Covestro) is a medium‑hardness thermoplastic polyester elastomer with well‑balanced performance. Thanks to its high elasticity, high‑low temperature resistance and fatigue resistance, it is widely used in automotive, consumer goods, electrical‑electronic and other industries.
Main Applications
Automotive Components: Such as dust‑proof boots, bellows and other parts.
Consumer Goods: Ski‑shoe accessories, shoe‑sole components, eyeglass frames, sports equipment.
Electrical‑Electronic Products: Electronic components.
Others: Also applicable for extruded products.
Physical Properties
| Property Category | Test Item | Test Condition | Test Standard | Test Data | Unit |
|---|---|---|---|---|---|
| Physical Properties | Density | — | ISO 1183 | 1.10‑1.12 | g/cm³ |
| Melt Flow Rate (MFR) | 230°C/2.16kg | ISO 1133 | 30‑33 | g/10min | |
| Water Absorption | 23°C, 24hr | ISO 62 | 0.75 | % | |
| Moisture Absorption | 23°C, 50% RH | ISO 62 | 0.3 | % | |
| Mechanical Properties | Hardness | — | ISO 868 | 34‑40 | Shore D |
| Tensile Modulus | — | ISO 527 | 40‑50 | MPa | |
| Tensile Strength | — | ISO 527 | 21‑25 | MPa | |
| Elongation at Break | — | ISO 527 | ＞830 | % | |
| Tear Strength | — | ISO 34 | 60 | kN/m | |
| Thermal Properties | Melting Temperature | — | ISO 11357 | 195 | °C |
| Vicat Softening Temperature | — | ISO 306 | 140 | °C |
Processing Technology
| Process Step | Core Parameters / Recommendations |
|---|---|
| Material Pre‑treatment | Thorough drying is required before processing. Recommended drying at 80℃～90℃ for 4 hours. |
| Injection Molding | • Barrel temperature: Generally 200℃～250℃. Note: Do not exceed 230℃ for EM400 if material stays in barrel for long‑time residence. • Mold temperature: 20℃～50℃ is recommended. • Injection speed: Slow‑to‑medium injection speed. |
| Extrusion | Processing temperature: 200℃～250℃. |
Note: All information above is for reference only!
