HDPE Dushanzi Petrochemical DMDA‑8008H
HDPE Dushanzi Petrochemical DMDA‑8008H Resin
Material Introduction: HDPE Dushanzi Petrochemical DMDA‑8008H is a high‑performance high‑density polyethylene grade, supplied as non‑toxic, tasteless and odorless milky‑white pellets. It delivers balanced high rigidity and toughness, favorable mechanical strength, good dielectric property and environmental stress‑cracking resistance. Designed for injection molding, especially suitable for thin‑wall articles and bottle caps.
Main Applications
Daily‑use & food‑contact thin‑wall packaging: reusable thin‑wall beverage cups, food containers.
Bottle caps: preferred grade for beverage bottle caps.
Containers: plastic crates and turnover boxes.
Other injection‑molded products: low‑grade household articles, housings and non‑load‑bearing components.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Value & Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | Q/SY DS 0510 | 0.956±0.002 g/cm³ | HDPE grade with high hardness and good rigidity. |
| Melt Flow Rate (MFR) | Q/SY DS 0511 (190°C/2.16 kg) | 6.5‑8.0 g/10min | Good melt flowability, excellent for injection molding and fast filling of thin‑wall parts. | |
| Mechanical Properties | Tensile Yield Stress | Q/SY DS 0512 | ≥25 MPa (typical tested value:30.4 MPa) | Indicator of tensile‑deformation resistance; higher value means better performance. |
| Tensile Break Stress | Q/SY DS 0512 | ≥10 MPa (typical tested value:26.3 MPa) | Maximum stress the material can withstand before fracture. | |
| Tensile Break Strain | Q/SY DS 0512 | ≥600% (typical tested value:1481%) | Superb toughness and ductility; tolerates heavy deformation without fracture. | |
| Izod Impact Strength | GB/T 1043.1‑2008 | Typical value 5.8 kJ/m² | Indicator of impact‑resistance performance. | |
| Appearance & Cleanness | Oversize & undersize pellets | SH/T 1541‑2006 | ≤10 g/kg (tested:0.1 g/kg) | Index for pellet uniformity; lower value preferred. |
| Black & colored particles | SH/T 1541‑2006 | ≤5 pcs/kg (tested:0 pcs/kg) | Index for material purity and impurity content; lower value preferred. |
Injection‑Molding Process Parameters
| Process Parameters | Recommended Range | Remarks & Interpretation (General HDPE characteristics) |
|---|---|---|
| Drying Treatment | Normally not required | Non‑hygroscopic polyolefin. Optional drying at 60℃ for 1 hour to remove surface moisture for better quality. |
| Barrel Temperature | 180‑230 ℃ | Wide processing window. Melting point approx.142℃, decomposition temperature 300℃. |
| Mold Temperature | Set according to product | Mold temperature significantly influences crystallization status of molded parts. |
| Injection Pressure | Adjust on‑site | HDPE has relatively high melt viscosity and limited flow‑length ratio. Larger gates and runners are required to avoid short shot for thin‑wall products. |
Additional Notes
‑ Molded parts are prone to static electricity and surface dust adsorption. ‑ Shrinkage rate: approx.1.6% (16‰). Flash tolerance: approx.0.05 mm。
Disclaimer: All above data is for reference only.
