🧩 PP-TPO-TX20 – Polypropylene + TPO + Talc 20%
(Technical composite olefinic material composed of Polypropylene (PP), TPO (Thermoplastic Polyolefin), and 20% fine treated talc (TX20))
🔹 What is PP-TPO-TX20
PP-TPO-TX20 is a modern olefinic compound derived from PP and TPO elastomer, modified with 20% treated talc for improved adhesion and stable mechanical behavior.
It belongs to the hybrid PP-EPDM-TPO material family, offering a perfect balance between flexibility and rigidity, which makes it a preferred choice for exterior parts with variable thickness. It is frequently found on car bumpers, lower protections, and parts for BMW, Renault, Dacia, and Mercedes, where rigidity, moderate elasticity, and dimensional stability are required.
🔧 Composition
| Component | Typical Proportion | Role |
| Polypropylene (PP) | 55–65 % | Rigid structural matrix |
| TPO (Thermoplastic Olefin) | 15–25 % | Elasticity, impact resistance |
| Modified Talc (TX20) | 20 % | Stiffening and thermal stability |
| Additives | < 5 % | UV protection and outdoor durability |
🚗 Automotive Applications
| Component | Example parts | Observations |
| Bumpers and Corners | Sill extensions, diffusers, sensor mounts | Semi-flexible, UV resistant |
| Lower Protections | Engine shields, protective covers | Rigid-elastic, matte |
| Wheel Arches | Fender liners, side panels | Vibration absorption, lightweight |
| Exterior Elements | Painted or textured parts | High dimensional stability |
🔩 Welding Compatibility
| Mating Material | Compatibility | Observations |
| TPO, TEO, PP-EPDM, TD20 | ✅ Excellent | Easy to weld – common family |
| Plain PP, PP-MD20 | ⚠️ Fair | Possible, but more rigid |
| TPE-O, TPE-V | ⚠️ Limited | Partially weldable |
| PA, PC, ABS, PET, PVC | ❌ Incompatible | Thermally and chemically incompatible |
🏭 Manufacturers and Trade Names
- LyondellBasell: Hostacom® PP-TPO-TX Series
- Borealis AG: Daplen® PP-TPO-TX20 / TPO Premium
- SABIC: PP-TPO-TX20 Compound
- Röchling Automotive: RoeBlend® PP-TPO-TX20
🧠 How to Identify
- Markings: >PP-TPO-TX20<, >PP-TPO-T20<, >TPO-TX20<
- Texture: Matte, slightly rubberized, uniform and dense surface
- Density: ~1.03 g/cm³, intermediate between TPO-TD20 and TVX20
- Flame Test: Clean flame, faint PP smell, grey-white ash (modified talc)
- Moderate flexibility, not brittle in the cold
🛠️ PP-TPO-TX20 Welding at ReplastMD
| Method | Temperature | Observations |
| Hot Air | 230 – 250 °C | Recommended – TPO / PP-EPDM rod |
| Heat plate (Mirror) | 220 – 240 °C | Clean joint, no shrinkage |
| Extrusion | 230 – 250 °C | Recommended for high thickness |
💡 ReplastMD Recommendation: use TPO or PP-EPDM welding rods, clean the surface with isopropyl alcohol, and apply controlled hot air.