PC Covestro 2456
PC Covestro 2456
Material Introduction: PC Covestro 2456 is a polycarbonate material applied in multiple industries. Its low‑viscosity (high flowability) enables easy processing and makes it suitable for thin‑wall products. Favorable impact resistance and heat resistance meet requirements of numerous application scenarios. Its food‑contact potential (e.g. FDA certification) and flame retardancy further broaden its application scope.
Main Applications
- Electronic & Electrical Components: Household‑appliance housings, switches, sockets, wiring boards, capacitors, telephone housings, telephone exchangers, signal relays and other parts.
- Automotive Industry: Lamp housings, interior trim parts and other components.
- Food‑Contact Materials: Food containers and tableware (specific food‑contact certification shall be confirmed).
- Medical Devices: Medical cups, tubes, bottles, dental instruments, drug containers and surgical instruments.
- Industrial Parts: Safety helmets, face shields, sunglasses, sports goggles, camera bodies, tool housings.
- Others: Baby bottles, tableware, toys, models and other products.
Key Characteristics
| Characteristic Category | Description | Reference Data (Test Standard) |
|---|---|---|
| Physical Properties | Low‑viscosity, high flowability, easy‑release | MVR: 19.0 cm³/10min (300°C/1.2kg, ISO 1133) Density: 1.20 g/cm³ (ISO 1183) |
| Mechanical Properties | Good rigidity & strength, excellent impact toughness | Tensile Modulus: 2400 MPa (ISO 527‑2/1) Charpy Notched Impact Strength: 65 kJ/m² (23°C, ISO 179/1eA) |
| Thermal Properties | Good heat resistance | HDT (1.8 MPa): 125°C; HDT (0.45 MPa): 137°C (ISO 75) |
| Optical Properties | High transparency | Light Transmittance: 89% (1000μm, ISO 13468‑2) |
| Safety Properties | Flame retardancy, food‑grade compliance | UL 94: HB (2.7 mm), V‑2 (0.75 mm) FDA and other food‑safety certifications obtained |
| Processing Properties | Injection‑molding grade; sufficient pre‑drying required to prevent hydrolytic degradation | Recommended moisture content ＜0.02% |
Injection Molding Processing Parameters
| Processing Stage | Parameter Item | Suggested Range / Operation Notes | Unit / Remarks |
|---|---|---|---|
| Pre‑drying | Drying Temperature | 120 | °C |
| Drying Time | More than 4‑6 hours (extend as required) | h | |
| Allowable Moisture Content | ＜ 0.02% | Critical requirement | |
| Injection Temperature | Rear Barrel Temperature | 280‑300 (example: nozzle‑head temperature approx.220‑230°C) | °C (adjust according to equipment and product structure) |
| Middle Barrel Temperature | 290‑310 (example: nozzle‑head temperature approx.220‑230°C) | °C | |
| Front Barrel Temperature | 300‑320 (example: nozzle‑head temperature approx.220‑230°C) | °C | |
| Nozzle Temperature | 295‑315 | °C | |
| Melt Temperature | 280‑320 (do not exceed 340°C) | °C (actual processing temperature shall be confirmed by air‑shot test) | |
| Mold Temperature | 80‑100 | °C (higher mold temperature reduces internal stress and improves filling & surface appearance) | |
| Injection Settings | Injection Pressure | 80‑100 (adjust according to product and mold design) | MPa |
| Holding Pressure | 40‑60 (40%‑60% of injection pressure) | MPa | |
| Back Pressure | 2‑4 | MPa | |
| Screw Speed | 40‑70 | rpm | |
| Other Parameters | Injection Speed | 200 mm/s | ‑ |
| Injection Time | 1‑5 | s | |
| Holding Time | 5‑10 | s | |
| Cooling Time | 10‑15 | s |
Disclaimer: All above data is for reference only.
