LLDPE ExxonMobil LL6201XR
LLDPE ExxonMobil LL6201XR Resin
Material Introduction: LLDPE ExxonMobil LL6201XR is high‑flow linear low‑density polyethylene. It delivers excellent toughness, superior environmental‑stress‑crack‑resistance, favorable stability and safety performance.
Main Applications
Household utensils & containers: large‑size household articles, waste bins, lids, bottle caps, plastic pails, door mats.
Thin‑wall articles: ultra‑high flowability makes it ideal for thin‑wall goods.
Other uses: blending modification base resin and carrier for color masterbatch.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Value & Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | ASTM D‑1505 | 0.924‑0.926 g/cm³ | Typical density range for LLDPE. |
| Melt Flow Rate (MFR) | ASTM D‑1238 (190°C/2.16kg) | 20‑50 g/10min | Core feature of high flowability for easy injection filling. Data varies across sources; refer to latest official TDS. | |
| Mechanical Properties | Tensile Yield Strength | ISO 527‑2/1A/50 | 10‑11 MPa | Indicator of tensile‑deformation resistance. |
| Flexural Modulus | ISO 178 | 260‑290 MPa | Characterizes material rigidity. | |
| Elongation at Break | ISO 527‑2/1A/50 | ＞100 % | Good toughness and ductility. | |
| Izod Notched Impact Strength | ISO 180‑1A | 47 kJ/m² | Characterizes impact‑resistance performance. | |
| Thermal Properties | Vicat Softening Point | ISO 306 | 91‑96 °C | Heat‑resistance indicator; deviation may come from different test conditions & standards. |
| Melting Point | ExxonMobil in‑house method | 121‑123 °C | Complete melting temperature reference for processing setting. | |
| ESCR (10% Igepal) | ASTM D‑1693 | 7‑40 hrs | Environmental‑stress‑crack‑resistance; wide data dispersion, official verification is required. |
Injection‑Molding Process Parameters
| Process Parameters | Recommended Range (High‑flow LLDPE) | Remarks & Interpretation |
|---|---|---|
| Drying Treatment | Normally not required | PE moisture absorption＜0.01%. No drying needed under proper storage. Dry at 60‑70 °C for 1‑2 h as precaution if package damaged or high‑humidity environment. |
| Barrel Temperature | 160‑220 °C | Temperature rises from rear zone to front zone. Crystalline polymer, barrel temperature shall exceed melting point 121‑123 °C. Start debugging from medium‑low temperature for this high‑flow grade to prevent thermal degradation. |
| Mold Temperature | 30‑60 °C | Mold temperature affects crystallization. Higher mold temperature improves crystallinity and strength, yet may increase shrinkage. |
| Injection Pressure | Medium pressure (50‑100 MPa) | High flow permits medium‑low injection pressure. Excessive pressure causes flash; adjust according to product structure and dimension. |
| Injection Speed | Medium‑high speed | High flow realizes fast filling, well‑suited for thin‑wall articles. |
| Holding Pressure | 40%‑60% of injection pressure | Avoid excessive holding pressure and long holding time to reduce internal stress. |
| Back Pressure | 0.5‑1.5 MPa | Low back pressure for melt compaction; excessive back pressure generates extra shear heat. |
| Screw Speed | Medium speed | Restrain excessive shear heat generation. |
Disclaimer: All above data is for reference only.
