LDPE Shanghai Petrochemical Q281
LDPE Shanghai Petrochemical Q281 Resin
Material Introduction: LDPE Shanghai Petrochemical Q281 is film‑grade polyethylene resin, especially suitable for manufacturing lightweight packaging films with high transparency. It features good chemical stability, resisting corrosion by acid, alkali, salt and aqueous solution under general conditions, together with water‑resistance and gas‑permeable property.
Main Applications
Food packaging film: lightweight packaging bags.
Agricultural film: blended with LLDPE for composite modification.
Other film applications: shrink film, laminated film, cryogenic film, medical packaging, co‑extruded multi‑layer film.
Performance Parameters
| Performance Category | Test Item | Test Condition | Test Method | Test Data / Unit | Remarks & Interpretation |
|---|---|---|---|---|---|
| Basic Properties | Density | 23℃ | GB/T 1033.2 | 0.9250 g/cm³ | Typical LDPE density range. |
| Melt Flow Rate (MFR) | 190℃/2.16kg | GB/T 3682 | 2.8 g/10min | Good melt strength for blown‑film processing. | |
| Mechanical Properties | Tensile Strength | ‑ | GB/T 1040 | 11.0 MPa | Mechanical strength for film application. |
| Elongation at Break | ‑ | ‑ | 550 % | Excellent toughness and ductility. | |
| Optical Properties | Haze | ‑ | GB/T 2410 | 14.0 % | Transparency evaluation index. |
| Hue | ‑ | ‑ | ≤‑16 | Color performance index. | |
| Processing Property | Blocking Property | ‑ | GB/T 16276 | 3.0 N/10cm² | Anti‑blocking performance of film. |
| Other Properties | Fish‑eye | ‑ | GB/T 4611 | 20 pcs/1200cm² | Film quality indicator; lower value represents better uniformity. |
| Fish‑eye Streak(0.5～2mm) | ‑ | GB/T 4611 | ≤390 pcs/20m² | Defect evaluation for film surface. | |
| Impurities(≥0.1mm) | ‑ | GB/T 2546.2 | ≤19 pcs/100g | Raw material cleanliness index. | |
| Streak Grade | ‑ | ‑ | ≥Grade B | Surface appearance grade. | |
| Cleanliness | ‑ | GB/T 2546.2 | 15 points/kg | Material impurity evaluation. | |
| Moisture Content | ‑ | GB/T 6284 | Qualified | Moisture meets specification. |
Blown‑Film Processing
- Melting temperature: typical processing temperature 160‑220 ℃
- Blow‑up ratio: adjust according to film thickness and performance requirements.
Disclaimer: All above data is for reference only.
