PC Covestro 2865
PC Covestro 2865
Material Introduction: PC Covestro 2865 is a medium‑viscosity general‑purpose polycarbonate material with excellent comprehensive performance. It is widely favored for favorable mechanical properties, high transparency, good mold‑release performance, flame retardancy (UL94 V‑2) and balanced processability. Its core advantages include high toughness, good heat resistance, high dimensional accuracy & stability and excellent electrical insulation property.
Main Applications
- Electronic & Electrical Components: Switches, household‑appliance housings, signal tubes, telephone housings, telephone exchangers, signal relays, capacitors, CD discs, etc.
- Automotive Industry: Lamp components, instrument panels and other parts.
- Industrial Equipment & Parts: Camera bodies, tool housings, safety helmets, diving goggles, safety lenses and so forth.
- Consumer Goods & General‑Purpose Parts: Baby bottles, tableware, toys, models, etc.
- Optical Lighting: Large‑size lamp housings, protective glazings, left‑and‑right eyepiece tubes for optical instruments.
- Medical Devices: Medical‑grade cups, tubes, bottles, dental instruments, drug containers and surgical instruments.
Key Characteristics
| Characteristic Category | Description | Reference Data (Test Standard) |
|---|---|---|
| Physical Properties | Medium‑viscosity, easy‑release, flame‑retardant (UL94 V‑2) | MVR: 10.0 cm³/10min (300°C/1.2kg, ISO 1133) Density: 1.20 g/cm³ (23°C, ISO 1183) |
| Mechanical Properties | High rigidity, high strength, outstanding impact toughness | Tensile Modulus: 2400 MPa (23°C, ISO 527‑2/1) Charpy Notched Impact Strength: 75 kJ/m² (23°C, ISO 179/1eA) or 65 kJ/m² (23°C, ISO 180/4A) |
| Thermal Properties | Good heat resistance | HDT (1.8 MPa): 125°C (ISO 75‑2/A) HDT (0.45 MPa): 137°C (ISO 75‑2/B) |
| Optical Properties | High transparency | Light Transmittance: 89% (2 mm thickness) or 88% (3 mm thickness) |
| Safety Properties | Flame retardancy | UL 94 V‑2 (1.5 mm & 3.0 mm) |
| 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 | 100‑120 | °C |
| Drying Time | 4‑6 h (max. 10 hours) | h | |
| Allowable Moisture Content | ＜ 0.02% | Critical requirement | |
| Injection Temperature | Melt Temperature | 280‑320 | °C |
| Mold Temperature | 80 or increase appropriately for better demolding | °C | |
| Injection Settings | Injection Pressure (screw‑type) | 70‑140 | MPa |
| Injection Pressure (plunger‑type) | 100‑160 | MPa | |
| Injection Speed | Relatively fast speed commonly adopted (e.g. electrical switch parts); slow‑to‑fast injection profile is typical | ‑ | |
| Back Pressure | Approx. 10 bar; may decrease if no silver streaks or color‑mixing defects | ‑ | |
| Others | Residence Time | Avoid long residence time to prevent material degradation | ‑ |
Disclaimer: All above data is for reference only.
