PP‑R Borealis CTRA140E
PP‑R Borealis CTRA140E Resin
Material Introduction: PP‑R Borealis CTRA140E is high‑performance random‑copolymer polypropylene pipe grade with high temperature resistance and anti‑creep property. It features outstanding long‑term hydrostatic strength, excellent impact performance and good processability.
Main Applications
Building cold‑hot‑water transmission systems: domestic cold‑hot‑water pipelines, central heating systems, especially for high‑temperature hot‑water service.
Floor heating system: for floor‑heating pipe production.
Industrial piping systems: conveyance of certain chemical media.
Performance Parameters
| Performance Category | Test Item | Test Condition | Reference Standard | Typical Value | Unit | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Properties | Melt Flow Rate (MFR) | 230℃/2.16kg | ISO 1133 | 0.3 | g/10 min | Low‑flow special grade for pipe extrusion. |
| Density | 23℃ | ISO 1183 | 0.905 | g/cm³ | Typical PP‑R density. | |
| Mechanical Properties | Tensile Yield Strength | ‑ | ISO 527‑2 | 25 | MPa | Tensile yield performance. |
| Flexural Modulus | ‑ | ISO 178 | 900 | MPa | Material rigidity index. | |
| Charpy Notched Impact Strength | 23℃ | ISO 179‑1eA | 19 | kJ/m² | Room‑temperature notch impact resistance. | |
| Thermal Properties | Heat‑Distortion Temperature(HDT) | ‑ | ‑ | ＞70（expected） | °C | Expected value for thermal deformation. |
Pipe Extrusion Process Parameters
- Processing temperature: PP decomposition temperature exceeds 300℃; resin turns yellow around 260℃ under oxygen exposure. Recommended melt temperature 220‑275℃, do not exceed 275℃; melting zone temperature around 240℃.
- Screw design: compatible with standard PP extrusion screw.
Injection‑Molding Process Parameters
- Barrel temperature：220‑275℃, maximum temperature shall not exceed 275℃.
- Mold temperature：40‑80℃, recommended 50℃. Crystallization degree is mainly determined by mold temperature.
- Injection pressure：up to 1800 bar.
- Injection speed: high‑speed injection reduces internal pressure; adopt low‑speed injection under higher melt temperature if surface defects occur.
- Runner & gate: cold runner diameter 4‑7 mm. All gate types are available; typical gate diameter 1‑1.5 mm, minimum 0.7 mm. Hot runner system is fully applicable for PP.
- Back pressure：5 bar for general plasticization; increase appropriately when using color powder.
- Drying treatment：pre‑drying unnecessary under proper storage condition.
Disclaimer: All above data is for reference only.
