PC Hengli Petrochemical HC‑31RTB
PC Hengli Petrochemical HC‑31RTB
Material Introduction: PC Hengli Petrochemical HC‑31RTB is an injection‑molding grade polycarbonate material with remarkable performance. It is characterized by high flowability, high heat resistance, high rigidity, high strength, high transparency and favorable comprehensive mechanical properties.
Main Applications
- Electronic & Electrical Accessories: Electrical fittings and components.
- Industrial Components & Containers: Industrial packaging and containers.
- Automotive Parts: Automotive components.
Key Characteristics
| Performance Category | Test Standard / Condition | Unit | Value / Description |
|---|---|---|---|
| Physical Properties | |||
| Density | ‑ | g/cm³ | 1.18‑1.20 |
| Mechanical Properties | |||
| Tensile Strength | ‑ | MPa | ≥75 |
| Flexural Strength | ‑ | MPa | ≥110 |
| Notched Impact Strength | ‑30℃ | kJ/m² | ≥65 |
| Thermal Properties | |||
| HDT (Heat‑Distortion Temperature) | 1.8 MPa | °C | 155‑160 |
| Flow Properties | |||
| MFR (Melt Flow Rate) | 300℃/1.2 kg | g/10min | 18‑22 |
| Weather Resistance | |||
| UV Anti‑aging Performance | QUV‑A test | hour | No yellowing after 2000 hours |
| Flame‑Retardant Properties | |||
| UL94 Flame Rating | 1.5 mm thickness | ‑ | V‑0 (halogen‑free formulation) |
| Chemical Resistance | |||
| Resistant Media | ‑ | ‑ | Resistant to gasoline, diesel, lubricating oil, acid and alkali corrosion |
Injection Molding Processing Parameters
| Processing Stage | Parameter Item | Suggested Range / Operation Notes | Unit / Remarks |
|---|---|---|---|
| Pre‑drying | Drying Temperature | 110‑120 | °C |
| Drying Time | More than 4‑6 hours (extend to 8‑12 hours as required) | h | |
| Allowable Moisture Content | ＜ 0.02% (0.015‑0.02%) | Critical requirement | |
| Injection Temperature | Rear Barrel Temperature | 220‑240 | °C (adjust according to equipment and product structure) |
| Middle Barrel Temperature | 240‑270 | °C | |
| Front Barrel Temperature | 260‑290 | °C | |
| Nozzle Temperature | 250‑280 | °C | |
| Melt Temperature | 260‑300 (do not exceed 310°C) | °C (general PC range; follow material recommendation for actual value) | |
| Mold Temperature | 80‑100 (common range for general‑purpose PC) | °C (higher mold temperature reduces internal stress and improves filling & surface appearance) | |
| Injection Settings | Injection Pressure | Medium‑high pressure (adjust according to product and mold design) | MPa (avoid excessive pressure which increases internal stress) |
| Holding Pressure | 40%‑60% of injection pressure (adjust according to products) | MPa | |
| Back Pressure | 5‑10 (approx.10 bar) | bar/MPa (beneficial for melt homogenization; excessive value may cause over‑high shear heat) | |
| Screw Speed | Medium speed (avoid excessive shear generating excessive heat) | rpm | |
| Others | Injection Speed | Medium‑high speed; relatively fast injection speed is commonly used, while preventing melt fracture and poor venting | ‑ |
Disclaimer: All above data is for reference only
