🧩 PP-EPDM-T10-I – Polypropylene + EPDM + Talc 10%
(Automotive composite with EPDM-modified polypropylene base and 10% talc filler, optimized for injection molding (I))
🔹 What is PP-EPDM-T10-I
PP-EPDM-T10-I is a polypropylene copolymer enriched with EPDM (synthetic rubber) for flexibility and 10% talc for dimensional stability.
The “I” suffix stands for Injection grade, featuring controlled viscosity and a matte finish. It offers good impact resistance, low water absorption, and stable performance across temperature variations.
It belongs to the PP-EPDM-Tx / TDx (10–40%) family, commonly found on bumpers, covers, fenders, and body elements.
🔧 Composition
| Component | Typical Proportion | Role |
| Polypropylene (PP) | 75–85 % | Rigid thermoplastic matrix |
| EPDM (rubber) | 10–15 % | Elasticity, vibration absorption |
| Talc (T10) | ~10 % | Stiffening filler, shrinkage control |
| Additives | < 2 % | UV protection, color, processability |
🚗 Automotive Applications
| Component | Example parts | Observations |
| Exterior Body | Covers, grilles, lower guards | Good resistance to impact and gravel |
| Wheel Arches | Wheel liners, side protections | Semi-flexible, thermally stable |
| Technical Covers | Under-trays, lower coverings | Noise and vibration damping |
🔩 Welding Compatibility
| Mating Material | Compatibility | Observation |
| PP-EPDM-Tx / TDx (10–40 %) | ✅ Perfect | Perfectly compatible; clean weld |
| PP, TPO, TPE-O | ✅ Good | PP-EPDM rod recommended |
| PP-GF, PP-MD | ⚠️ Possible | Requires higher temperature |
| PA, PC, ABS, PVC, PET | ❌ Incompatible | Thermally and chemically incompatible |
🏭 Manufacturers and Trade Names
- Borealis: Daplen® PP-EPDM-Txx (automotive grades)
- LyondellBasell: Hostacom® (exterior parts)
- SABIC: PP Compounds (body injection molding)
- TotalEnergies: Lumicene® PP (T10–T30 blends)
- Moplen®: Automotive compound used for bumpers and covers
🧠 How to Identify
- Typical Marking: >PP-EPDM-T10-I<, >PP+EPDM+T10<
- Surface: Matte, slightly rubberized texture
- Color: Black, grey, anthracite
- Flame Test: Burns clean, olefinic smell, no thick smoke
🛠️ PP-EPDM-T10-I Welding at ReplastMD
| Method | Temperature | Observations |
| Hot Air | 230–250 °C | 5–7 mm nozzle, constant movement |
| Heat-plate (Mirror) | 200–220 °C | Clean joint, short pressure |
| Extrusion | 220–240 °C | PP-EPDM or plain PP rod |
💡 ReplastMD Recommendation: degrease before bonding, apply light pressure, and ensure uniform cooling.