PPP Daelim HP552R Resin
PP Daelim HP552R Resin
Material Introduction: PP Daelim HP552R is fiber‑grade homopolymer polypropylene resin, featured with high melt‑flow property and excellent spinnability.
Main Applications
Sanitary articles: diapers, sanitary napkins.
Textile & packaging: packing ropes, straps, multi‑filament textiles.
Automotive industry: automotive interior fillers, interior components.
Industrial applications: non‑woven fabrics, continuous long‑filament and short‑fiber production.
Performance Parameters
| Performance Category | Test Item | Test Condition | Value / Range | Unit | Reference Standard | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Properties | Melt Flow Rate(MFR) | 230℃/2.16kg | 25 | g/10 min | ASTM D1238 | Fiber‑grade high‑flow homopolymer PP. |
| Density | ‑ | 0.90 | g/cm³ | ASTM D1505 | ‑ | |
| Mechanical Properties | Tensile Yield Strength | ‑ | 380 | MPa | ASTM D638 | *Note: this value is converted from kg/cm² unit in source data. |
| Flexural Modulus | ‑ | 15000 (10³ psi) | ‑ | ASTM D790 | ‑ | |
| Elongation at Break | ‑ | 12 | % | ASTM D638 | ‑ | |
| Rockwell Hardness | R‑scale | 104 | ‑ | ASTM D785 | ‑ | |
| Izod Notched Impact Strength | 23℃ | 3 | kg·cm/cm | ASTM D256 | ‑ | |
| Thermal Properties | Heat‑Distortion Temperature(HDT) | 0.46 N/mm² | 106 | ℃ | ASTM D648 | ‑ |
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) | 200‑250℃ | Prevent thermal degradation. |
| Barrel middle zone(compression section) | 210‑270℃ | ‑ |
| Barrel front zone(metering section) | 220‑290℃ | ‑ |
| Nozzle temperature | 220‑290℃ | Do not exceed 290℃. |
| Mold temperature | 40‑80℃，recommended 50℃ | Smooth surface cannot be obtained below 50 ℃, weld‑line and flow‑mark defects tend to occur; warpage easily occurs above 90 ℃. |
| Injection pressure | 80‑140 MPa (up to 180 MPa for thin‑wall parts) | ‑ |
| Holding pressure | 30%‑60% of injection pressure | Prevent shrinkage cavity and excessive shrinkage. |
| Injection speed | High‑speed injection is normally adopted to reduce internal stress; if surface defects appear, try low‑speed injection at higher melt temperature. | ‑ |
| Runner & Gate | Typical cold‑runner diameter:4‑7 mm. All gate types are available, typical gate diameter:1‑1.5 mm. For edge gate, depth ≥ half of wall‑thickness, width ≥ twice of wall‑thickness. Round‑type gates and runners are preferred. Hot‑runner systems are applicable. |
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Disclaimer: All above data is for reference only.
