HDPE Huajin Chemical T5070
HDPE Huajin Chemical T5070 Resin
Material Introduction: HDPE Huajin Chemical T5070 is a high‑density polyethylene, supplied as non‑toxic, tasteless and odorless milky‑white pellets. It features high rigidity, good toughness and outstanding low‑temperature resistance (minimum service temperature: ‑100~‑70°C). It possesses excellent chemical stability against most acids and bases, except oxidizing acids. Mainly applied for injection‑molded industrial parts and daily‑use articles.
Main Applications
Industrial containers & packaging: plastic crates, turnover boxes.
Daily‑use goods: 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 | ASTM D1505 | 0.96 g/cm³ | HDPE grade with high hardness and good rigidity. |
| Melt Flow Rate (MFR) | ASTM D1238 (190°C/2.16 kg) | 6.4 g/10min | Good melt flowability, well‑suited for injection molding and mold filling. | |
| Appearance‑Colored Particles | ‑ | ≤10 pcs/kg | Indicator for material purity and surface quality; lower value is preferred. |
Injection‑Molding Process Parameters
| Process Parameters | Recommended Range | Remarks & Interpretation (General HDPE characteristics) |
|---|---|---|
| Drying Treatment | Normally not required | Non‑hygroscopic polyolefin (moisture absorption ≤0.01%). Optional drying at 60℃ for 1 hour to remove surface moisture for better quality. |
| Barrel Temperature | 180‑230 ℃ | Crystalline polymer; temperature shall exceed melting point (~142℃) and below decomposition temperature (300℃). Typical target ~220℃; lower for rear zone, higher for front zone. |
| Mold Temperature | 50‑70 ℃ | Mold temperature greatly influences crystallization. Higher mold temperature brings higher crystallinity and strength yet larger shrinkage. 10‑20℃ higher than LDPE mold temperature. |
| Injection Pressure | 50‑100 MPa | Good flowability; adopt lower pressure except for thin‑wall long‑flow‑path parts. Lower pressure for simple thick‑wall parts, higher pressure for complex parts. |
| Holding Pressure | 30%‑60% of injection pressure | Avoid excessive holding pressure and long holding time to reduce internal stress. |
| Back Pressure | 5‑20 MPa | Low back pressure for melt compaction; excessive back pressure will generate extra shear heat. |
| Screw Speed | Medium speed | Prevent excessive shear‑induced heat build‑up. |
Disclaimer: All above data is for reference only.
