HIPS Dushanzi Petrochemical HIE‑1
HIPS Dushanzi Petrochemical HIE‑1
Material Introduction: HIPS Dushanzi Petrochemical HIE‑1 is a high‑impact polystyrene plastic. It features good rigidity, easy molding‑processing, excellent colorability and favorable electrical properties.
Main Applications
Electrical accessories (e.g. housings for televisions, radio‑recorders, refrigerator liners, air‑conditioning equipment, washing machines, telephones, vacuum cleaners, lighting devices and office‑machine components), automotive parts, medical‑equipment components, toys, furniture, daily‑life articles, packaging materials.
Physical Properties
| Performance Category | Test Item | Test Standard | Unit | Typical Value / Range |
|---|---|---|---|---|
| Physical Properties | Melt Flow Rate (MFR) | ISO 1133 (200°C/5kg) | g/10min | 2.0‑4.0 (typical 3.4) |
| Density | ‑ | g/cm³ | ‑ (typically ~1.04‑1.06 for HIPS) | |
| Mechanical Properties | Tensile Strength | ISO 527‑2 | MPa | ≥19.0 (typical 23.0) |
| Charpy Notched Impact Strength | ISO 179‑1 | kJ/m² | ≥3.0 (typical 11.1) | |
| Thermal Properties | Vicat Softening Temperature | ISO 306 | °C | 84‑91 (typical 88) |
| Heat‑Distortion Temperature under Load | ISO 75‑2 | °C | Measured value (typical 74) | |
| Other Properties | Pellet Appearance (Colored Particles) | SH/T 1541 | pcs/kg | ≤40 (typical 0) |
| Yellow Index (Z‑Y) | ASTM E‑308‑1 | ‑ | ≤19 | |
| Residual Styrene Monomer | ISO 2561 | ppm (wt) | <600 (typical 181) |
Injection Molding Parameters
| Process Parameter | Reference Range / Recommendation | Remarks & Descriptions |
|---|---|---|
| Drying Treatment | Normally unnecessary; dry at 70‑80°C for 2‑3 hours under improper storage conditions | HIPS has low water absorption; drying is generally not required. Drying is recommended under high‑humidity environment or improper storage. |
| Barrel Temperature | 190‑240°C | Relatively higher injection and molding temperatures are preferred due to rubber‑modified composition. |
| Mold Temperature | 40‑60°C | Higher mold temperature helps reduce internal stress. |
| Injection Pressure | Medium‑to‑high (e.g. 60‑150 MPa, subject to products) | Sufficient holding pressure, holding time and cooling time are required. |
| Injection Speed | Medium speed | Avoid excessive speed causing molding defects. |
| Back Pressure | 0.5‑1.0 MPa | Appropriate back pressure facilitates melt homogenization. |
| Screw Speed | Medium (e.g. 50‑100 rpm) | Avoid excessive screw speed to prevent shear overheating. |
Disclaimer: All above data is for reference only.
