LDPE Maoming Petrochemical M1850A
LDPE Maoming Petrochemical M1850A Resin
Material Introduction: LDPE Maoming Petrochemical M1850A is high‑flow low‑density polyethylene, featuring excellent processability and favorable product surface appearance.
Main Applications
Injection‑molded products: specially applied for plastic flowers and bonsai ornaments. It is also widely used in uniforms, garments, luggage, sofas, balls, automotive decorations, highway & railway isolation fences, municipal guardrails, high‑value micro‑fiber synthetic leather and breathable garment‑grade synthetic leather.
Coating material: available for coating application.
Masterbatch carrier: high‑flow property makes it widely used as carrier resin for color masterbatch and functional masterbatch.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Test Data / Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | ISO 1183 / GB/T 1033 | 0.918‑0.9205 g/cm³ | Typical LDPE density range. |
| Melt Flow Rate (MFR) | ISO 1133 / GB/T 3682 (190°C/2.16kg) | 7.5‑50 g/10min ※Note | Remarkable high‑flow characteristic. Large data deviation from different sources, subject to factory inspection report or latest official TDS. | |
| Mechanical Properties | Tensile Yield Strength | ISO 527‑2 / ASTM D638 | 8.0‑9.0 MPa | ‑ |
| Tensile Strength at Break | ISO 527‑2 / ASTM D638 | 12.0 MPa | ‑ | |
| Elongation at Break | ISO 527‑2 / ASTM D638 | 450‑500 % | ‑ | |
| Thermal Properties | Vicat Softening Temperature | ISO 306 | 90.0 °C | ‑ |
| Melting Temperature | ISO 11357‑3 | 108 °C | ‑ | |
| Optical Properties | Gloss (45°) | ‑ | ≥45 (Grade‑1 product) | Good surface gloss of finished parts. |
| Haze | ‑ | ≤10 % (Grade‑1 product) | Optical index for film transparency. |
Injection‑Molding Process Parameters
| Process Parameters | Recommended Range | Remarks & Interpretation |
|---|---|---|
| Drying Treatment | Normally not required | Low‑hygroscopic LDPE for direct usage. Dry at 60‑70 ℃ for 1‑2 h under extremely humid storage condition. |
| Barrel Temperature | 160‑190 °C | Reference recommended setting. General LDPE range 180‑280 ℃ is for reference only. Start with relatively low temperature to avoid thermal degradation for this high‑flow grade. |
| Mold Temperature | 20‑40 °C | Low mold temperature shortens cycle time and prevents product deformation. |
| Injection Pressure | Adjust according to practical condition | High flowability fills cavity under low‑medium pressure; excessive pressure will cause flash. |
| Injection Speed | Medium‑high speed | High‑speed injection improves production efficiency by taking advantage of good flowability. |
| Screw Speed | Moderate speed | Avoid excessive shear heat which triggers material degradation. |
| Back Pressure | 0.5‑1.0 MPa | Low back pressure for melt compaction; high back pressure generates redundant shear heat. |
Disclaimer: All above data is for reference only.
