HDPE LyondellBasell ACP5331H
HDPE LyondellBasell ACP5331H Resin
Material Introduction: HDPE LyondellBasell ACP5331H is a multi‑modal high‑density polyethylene produced by advanced cascade polymerization process. It features outstanding rigidity, excellent environmental stress‑cracking resistance (ESCR) and good processability.
Main Applications
Injection molding: bottle caps, bottle stoppers, household articles, plastic lids, housings and shields.
Blow molding: liquid containers, enabling wall‑thickness reduction and lightweight design.
Other applications: oil pipes, rigid packaging, consumer goods, cap sealing components and engineering parts.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Value & Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | ISO 1183 | 0.953 g/cm³ | HDPE grade with high hardness and good rigidity. |
| Melt Flow Rate (MFR) | ISO 1133 (190°C/2.16 kg) | 2.1 g/10min | Moderate flowability, suitable for multiple processes including injection molding and blow molding. | |
| Melt Flow Rate (MFR) | ISO 1133 (190°C/5.0 kg) | 6.3 g/10min | Melt flow performance under higher loading condition. | |
| Mechanical Properties | Tensile Modulus | ISO 527‑2 | 1150 MPa | Indicator of rigidity; higher value delivers better deformation resistance. |
| Tensile Yield Stress | ISO 527‑2 | 30.0 MPa | Stress point when permanent deformation occurs. | |
| Tensile Yield Strain | ISO 527‑2 | 10 % | Strain value at yield point. | |
| Charpy Notched Impact Strength | ISO 179 (-30°C) | 5.0 kJ/m² | Low‑temperature impact‑resistance performance; higher value preferred. | |
| Shore D Hardness | ISO 868 | 62 | Provides certain surface scratch‑resistance. | |
| Ball‑Indentation Hardness | ISO 2039‑1 | 51.0 MPa | Alternative hardness index. | |
| Environmental Stress‑Cracking Resistance (FNCT) | Internal method (50°C, 6 MPa, 2% Arkopal N100) | ＞9.0 hr | Excellent ESCR, critical for liquid‑holding containers. | |
| Thermal Properties | Vicat Softening Temperature | ISO 306/B50 | 75.0 °C | Heat‑resistance indicator. |
Injection‑Molding Processing
‑ Drying Treatment: HDPE features extremely low moisture absorption (<0.01%). Drying is not required under good storage conditions. Dry at 60‑80°C for 1‑2 hours as precaution if package damaged or under high‑humidity environment. ‑ Melt Temperature: Recommended processing range 180‑260℃. Typical barrel reference ~220℃; lower for rear zone, higher for front zone. ‑ Mold Temperature: 30‑70℃. Higher mold temperature improves crystallinity, part strength and surface gloss, yet prolongs cooling cycle and increases shrinkage. ‑ Injection Pressure: Normally 70‑100 MPa (≈700‑1000 bar). Higher pressure may be required for complex or thin‑wall articles. ‑ Injection Speed: Medium‑high speed recommended for better flow and production efficiency.
Blow‑Molding Processing
‑ Processing Temperature: 150‑220℃, fine‑tuned according to equipment and finished parts. ‑ Blow‑up ratio: Optimize according to mold and product design.
Disclaimer: All above data is for reference only.
