PC Teijin Jiaxing L‑1250Y
PC Teijin Jiaxing L‑1250Y
Material Introduction: PC Teijin Jiaxing L‑1250Y is an injection‑molding grade material with favorable comprehensive performance. It features high transparency, medium viscosity, good mechanical strength and impact resistance, as well as excellent electrical insulation and flame‑retardant properties. The built‑in mold‑release agent ensures smooth demolding during production.
Main Applications
- Thin‑wall Products: Suitable for thin‑wall products requiring high flowability owing to its good fluidity.
- Electronic & Electrical: Used for manufacturing electrical appliances, electronic components and mechanical parts.
- Lighting Equipment: Applied for lighting fixtures and lamp housings.
- Consumer Goods & Containers: Widely used in labor‑protection articles (e.g. safety helmets), health‑care products, tableware and containers.
- Medical Supplies: Available for medical‑device housings and single‑use medical devices.
Key Characteristics
| Characteristic Category | Description | Reference Data (Test Standard) |
|---|---|---|
| Physical Properties | High transparency, slight blue base tint Medium viscosity, good flowability |
Light transmittance: 88% (3 mm, ASTM D1003) MVR: 8.0 cm³/10min (300°C/1.2 kg, ISO 1133) Density: 1.20 g/cm³ (ISO 1183) |
| Mechanical Properties | Good rigidity and strength, excellent impact toughness | Flexural strength: 90‑91 MPa (ISO 178) Charpy notched impact strength: 76 kJ/m² (ISO 179) |
| Thermal Properties | Good heat resistance | HDT (1.8 MPa): 129°C (ISO 75‑2/A) Vicat softening temperature: 149°C (ISO 306/B50) |
| Safety Properties | Flame retardancy (rating varies with thickness) | UL 94: HB at 1.50 mm; V‑2 at 0.400 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 (for general‑purpose PC) | °C |
| Drying Time | More than 4‑6 hours (extend as required) | h | |
| Allowable Moisture Content | ＜ 0.02% | Critical requirement | |
| Injection Temperature | Rear Barrel Temperature | 240‑280 | °C (adjust according to equipment and product structure) |
| Middle Barrel Temperature | 270‑300 | °C | |
| Front Barrel Temperature | 270‑300 | °C | |
| Nozzle Temperature | 270‑300 | °C | |
| Melt Temperature | 270‑320 (do not exceed 320°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 | 6‑14 (adjust according to product and mold design) | MPa |
| Injection Speed | Relatively fast speed commonly adopted (e.g. electrical switch parts); slow‑to‑fast injection profile is typical. Adjust speed according to products. | ‑ | |
| Back Pressure | Approx.10 bar; may decrease if no silver streaks or color‑mixing defects | bar | |
| Screw Speed | 30‑120 | rpm |
Disclaimer: All above data is for reference only.
