PP Yangzi Petrochemical PPB‑M30‑V Resin
PP Yangzi Petrochemical PPB‑M30‑V Resin
Material Introduction: PP Yangzi Petrochemical PPB‑M30‑V is injection‑molding impact‑copolymer polypropylene. It features high flowability, good impact resistance and fast crystallization rate, especially suitable for large‑size thin‑wall products.
Main Applications
Automotive parts: automotive interior trim components.
Home appliances: washing‑machine inner drums and other large thin‑wall injection‑molded articles.
Performance Parameters
| Performance Category | Test Item | Test Condition | Reference Value | Unit | Reference Standard | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Properties | Melt Flow Rate(MFR) | 230℃/2.16kg | 30 | g/10 min | GB/T 3682‑2000 | High‑flow grade for large thin‑wall injection molding. |
| Mechanical Properties | Tensile Yield Stress | ‑ | 25 | MPa | GB/T 1040.2‑2006 | ‑ |
| Elongation at Break | ‑ | 100 | % | GB/T 1040.2‑2006 | ‑ | |
| Flexural Modulus | ‑ | 1250 | MPa | GB/T 9341‑2008 | Rigidity performance. | |
| Charpy Notched Impact Strength | 23℃ | 6 | kJ/m² | GB/T 1043.2‑2008 | Room‑temperature impact performance. | |
| Rockwell Hardness | ‑ | 85 | R | GB/T 9342‑2008 | Surface hardness. | |
| Thermal Properties | Heat‑Distortion Temperature(HDT) | 0.45 MPa | 90 | ℃ | GB/T 1634‑2004 | Low‑load heat resistance. |
Injection‑Molding Process Parameters
| Process Item | Suggested Range / Description | Remarks |
|---|---|---|
| Drying treatment | Generally unnecessary; dry at 80℃ for 1‑2 h if damp under poor storage condition | PP low‑moisture‑absorption feature. |
| Barrel rear zone(feed section) | 160‑200℃ | Prevent thermal degradation. |
| Barrel middle zone(compression section) | 180‑220℃ | ‑ |
| Barrel front zone(metering section) | 200‑240℃ | ‑ |
| Nozzle temperature | 200‑240℃ | ‑ |
| Mold temperature | 40‑80℃, recommended 50℃ | Crystallization mainly determined by mold temperature. Low temperature: poor surface, weld‑line and flow‑mark risks; high temperature will cause warpage. |
| Injection pressure | 80‑140 MPa(800‑1400 bar) | Higher pressure for thin‑wall or complex‑structure parts. |
| Holding pressure | 30%‑60% of injection pressure | Prevent sink mark and excessive shrinkage; holding time accounts for ~30% of cycle time. |
| Injection speed | Medium speed; high‑speed injection required for thin‑wall packaging containers. | ‑ |
| Screw speed | High screw speed(linear velocity 1.3 m/s) is permitted | Complete plasticization before cooling phase finishes. |
Disclaimer: All above data is for reference only.
