🧩 TPC-EE – Copolyester Elastomer (Ester-Ester)
(A high-performance copolyester elastomer composed exclusively of ester-type hard and soft segments. TPC-EE offers superior resistance to high temperatures up to 200 °C, oils, fuels, and mechanical fatigue.)
🔹 What is TPC-EE
TPC-EE is the “high-heat” version of technical elastomers. At ReplastMD, we treat it as a superior alternative to TPC-ET for environments where hydro-degradation or intense heat is a risk. Since all segments are ester-based, it provides better thermal stability and chemical resistance in lubricants and fuels. It is the preferred material for high-precision EGR ducts, vacuum lines, and dynamic seals that must survive constant stress under the hood.
🔧 Composition & Properties
- Polymer Base: Rigid Polyester (PBT/PET) + Flexible Polyester Segments.
- Density: ~ 1.20 – 1.30 g/cm³.
- Operating Range: Constant use up to +200 °C.
- Chemical Resistance: Outstanding (oils, fuels, hydraulic fluids).
- Visuals: Elastic, smooth, medium gloss; black, grey, or translucent.
🚗 Where it is used in the automotive industry
| Component | Example parts | Observations |
| High-Temp Bellows | VW, Toyota, Renault | Oil and extreme temperature resistance |
| EGR / Vacuum Ducts | BMW, Ford | Chemical stability in contact with hot fluids |
| Dynamic Rollers / Belts | Mercedes, Peugeot | Exceptional resistance to cyclic fatigue |
| Anti-vibration Mounts | Hyundai, Dacia | High durability under repeated loads |
🔧 Welding and Bonding Methods
| Method | Optimal Temp | Observations |
| Hot Air | 260 – 280 °C | Clean welding without carbonization |
| Heat Plate (Mirror) | ✅ Recommended | Very strong, uniform bonding |
| Ultrasonic | ✅ Ideal | Effective for technical thin-walled parts |
💡 ReplastMD Recommendation: Weld at ~270 °C using digital temperature control or teflon-coated heating plates. TPC-EE is ideal for automotive hoses and gaskets where maximum mechanical and chemical durability at high temperatures is required.