🧩 PE-HD-TD20 – 20% Talc Filled High-Density Polyethylene
(Rigid semi-crystalline material consisting of High-Density Polyethylene (PE-HD) and 20% talc (TD20))
🔹 What is PE-HD-TD20
PE-HD-TD20 is a mineral-reinforced polyethylene where talc improves rigidity, reduces shrinkage, and increases resistance to high temperatures.
It offers a balanced combination of hardness, dimensional stability, and chemical resistance. It serves as an economical alternative to PP-TD20 materials but with higher density and superior chemical resistance. It is widely used for technical parts, reservoirs, casings, and shields exposed to vibrations and moderate temperatures.
🔧 Composition
| Component | Typical Proportion | Role |
| PE-HD (High-Density Polyethylene) | 75–80 % | Main polymer matrix |
| Talc (TD20) | 20 % | Stiffening, thermal stability, and shrinkage reduction |
| Additives | < 5 % | UV protection and aging resistance |
🚗 Automotive Applications
| Component | Example parts | Observations |
| AdBlue / Fluid Tanks | Caps, plugs, internal housings | Excellent chemical resistance |
| Engine Shields / Under-panels | Flat protections, fixing covers | Rigid and easy to process |
| Technical Parts / Brackets | Mounting elements, consoles, guides | Moderate thermal stability |
| Interior Components | Sill covers, handles, frames | Matte finish, durable |
🔩 Welding Compatibility
| Mating Material | Compatibility | Observations |
| PE-HD, PE-MD, PE-LLD, PE-HD-TD20 | ✅ Excellent | Very good weldability |
| PP, PP-TD20, PP-EPDM | ⚠️ Fair | Requires modified PE welding rod |
| TPO, TEO | ⚠️ Limited | Melting point difference |
| PA, PC, PVC, ABS | ❌ Incompatible | Chemically incompatible |
🏭 Manufacturers and Trade Names
- LyondellBasell: Hostalen® PE-HD-TD Series
- Borealis AG: BorSafe® / BorPure® PE-HD-TD
- SABIC: PE-HD-TD Compounds
- INEOS: Eltex® PE-HD-TD20
🧠 How to Identify
- Markings: >PE-HD-TD20<, >PE-HD-T20<, >HDPE-TD20<
- Texture: Matte, dense, slightly granular
- Density: ~1.02–1.04 g/cm³
- Flame Test: Clean flame, paraffin smell, transparent melted drips
- Slightly rigid, yet more maleable than PP-TD20
🛠️ PE-HD-TD20 Welding at ReplastMD
| Method | Temperature | Observations |
| Hot Air | 240 – 260 °C | Recommended – PE-HD rod |
| Heat plate (Mirror) | 230 – 250 °C | Uniform bonding, no bubbles |
| Extrusion | 250 – 260 °C | For high thicknesses or deep cracks |
💡 ReplastMD Recommendation: use compatible PE-HD welding rods, avoid overheating, and maintain constant air flow.