PP Huajin Chemical F401 Resin
PP Huajin Chemical F401 Resin
Material Introduction: PP Huajin Chemical F401 is widely‑used spinning‑grade homopolymer polypropylene. It is well‑known for favorable mechanical strength, heat resistance and stable processing performance.
Main Applications
Woven products: woven bags, woven fabrics, strapping bands, tarpaulins, carpet backings, etc.
Injection‑molded products: general mechanical parts, corrosion‑resistant parts, insulating parts and daily‑use articles.
Performance Parameters
| Performance Category | Test Item | Test Condition | Value / Range | Unit | Reference Standard & Remarks |
|---|---|---|---|---|---|
| Basic Properties | Melt Flow Rate(MFR) | 230℃/2.16kg | 1.7‑3.1 | g/10 min | Same range for premium grade, first‑class grade and qualified grade. |
| Density | ‑ | 0.910 | g/cm³ | ‑ | |
| Mechanical Properties | Tensile Yield Strength | ‑ | Premium≥33；First‑class≥31；Qualified≥30 | MPa | ‑ |
| Flexural Modulus | ‑ | ≥1300 | MPa | ‑ | |
| Other Properties | Isotactic Index | ‑ | ≥97.0 | % | ‑ |
| Powder Ash Content | ‑ | Premium≤0.02；First‑class≤0.03；Qualified≤0.04 | % | ‑ | |
| Cleanness (colored particles) | ‑ | Premium 0‑5；First‑class 6‑10；Qualified 11‑20 | pcs/kg | ‑ | |
| Cleanness (foreign particles) | ‑ | Premium 0‑5；First‑class 6‑10；Qualified 11‑20 | pcs/kg | ‑ | |
| Whiteness | ‑ | Premium≥65；First‑class≥60；Qualified≥55 | ‑ | ‑ |
Injection‑Molding Process Parameters
| Process Item | Suggested Range / Description | Remarks |
|---|---|---|
| Drying treatment | Generally unnecessary; dry at 80℃ for 1‑2 h under poor storage condition | ‑ |
| Barrel rear zone(feed section) | 160‑180℃ | Prevent thermal degradation. |
| Barrel middle zone(compression section) | 180‑200℃ | ‑ |
| Barrel front zone(metering section) | 200‑220℃ | ‑ |
| Nozzle temperature | 200‑210℃ | ‑ |
| 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 | 70‑100 MPa | Higher pressure available for thin‑wall or complex‑structure parts. |
| Holding pressure | 50%‑60% of injection pressure | Prevent shrinkage cavity and excessive shrinkage. |
| Injection speed | Medium speed | High‑speed injection improves appearance yet may induce internal stress; low‑speed injection benefits venting. |
| Screw speed | 50‑100 rpm | Avoid excessive shear heat resulting in material degradation. |
Disclaimer: All above data is for reference only.
