HDPE LG Chem ME9180
HDPE LG Chem ME9180 Resin
Material Introduction: HDPE LG Chem ME9180 is an injection‑molding grade high‑density polyethylene. Its main characteristics include high stiffness, good environmental‑stress‑cracking resistance, excellent processability and high impact strength.
Main Applications
Industrial parts and turnover boxes: transport boxes, parts bins, pallets, backing plates, etc. High stiffness and impact strength ensure durability under repeated usage and impact.
Large household articles: trash cans, large storage bins, outdoor furniture, benefiting from favorable rigidity and environmental‑stress‑cracking resistance.
Daily‑use articles and disposable products: various household containers, lids and other items.
Performance Parameters
| Performance Category | Test Item | Test Standard | Value / Range | Unit |
|---|---|---|---|---|
| Basic Properties | Melt Flow Rate (MFR) | ASTM D‑1238 (190°C/2.16kg) | 18.0 | g/10min |
| Density | ASTM D‑1505 (23°C) | 0.958 | g/cm³ | |
| Mechanical Properties | Tensile Yield Strength | ASTM D‑638 | 28.4 | MPa (290 kg/cm²) |
| Elongation at Break | ASTM D‑638 | ＞1000 | % | |
| Flexural Modulus | ASTM D‑790 | 981 | MPa (12 000 kg/cm²) | |
| Izod Notched Impact Strength | ASTM D‑256 | 4 | kg·cm/cm (39 J/m) | |
| Hardness | ASTM D‑2240 | 64‑65 | Shore D | |
| Thermal Properties | Vicat Softening Temperature | ASTM D‑1525 | 123 | °C |
| Brittleness Temperature | ASTM D‑746 | ＜‑80 | °C | |
| Melting Temperature (DSC) | ‑ | 133 | °C |
Processing Parameters
| Processing Stage | Parameters | Recommended Range / Description |
|---|---|---|
| Drying | Necessity | Drying is normally unnecessary. Dry at 60‑80°C for 1‑2 hours under humid storage condition to prevent silver streaks or bubbles on product surface. |
| Injection Molding | Barrel Temperature | Rear zone:180‑200°C；Middle zone:200‑220°C；Front zone:210‑230°C；Nozzle:210‑230°C |
| Melt Temperature | Recommended:210‑230°C. Avoid excessive temperature and long residence time to prevent material degradation. | |
| Mold Temperature | 30‑60°C. Higher mold temperature improves surface gloss; lower mold temperature shortens molding cycle. | |
| Injection Pressure | Adjust according to product structure and wall thickness, normally 60‑100 MPa. Holding pressure is 50%‑80% of injection pressure. | |
| Injection Speed | Medium‑to‑high speed. Higher speed for thin‑wall or complex‑geometry parts for full filling; reduce speed for thick‑wall parts to lower internal stress. |
Disclaimer: All above data is for reference only.
