PC Chi Mei (Taiwan) PC‑115
PC Chi Mei (Taiwan) PC‑115
Material Introduction: PC Chi Mei (Taiwan) PC‑115 is a low‑viscosity, high‑flow, transparent polycarbonate grade. Manufactured by non‑phosgene melt transesterification process, it meets FDA and UL certification requirements. It possesses favorable heat resistance, excellent electrical insulation and good mechanical strength, and is mainly designed for injection molding.
Main Applications
- Stationery & Office Supplies: Pen tubes, pen barrels and other articles.
- Toys & Consumer Goods: Transparent products such as toys, tableware, baby bottles and models.
- Electronic & Electrical Components: Capacitor housings, telephone housings and parts, switches, home‑appliance housings, signal tubes, etc.
- Medical‑Device Packaging: Medical‑grade variant PC‑115P can be used for medical cups, tubes, bottles, dental instruments and drug containers, suitable for radiation‑sterilized medical packaging and devices. (Note: Comply with relevant medical regulations and certification requirements.)
- Lighting Equipment: Large lamp shades, protective glazing.
- Industrial Parts: Safety helmets, diving goggles, safety lenses, camera bodies, machinery housings and other components.
Physical & Mechanical Properties
| Property Category | Performance Parameter | Test Standard | Value / Range | Unit |
|---|---|---|---|---|
| Physical Properties | Density | ASTM D792 | 1.20 | g/cm³ |
| Melt Mass‑Flow Rate (MFR) | ASTM D1238 (300°C / 1.2 kg) | 15 | g/10 min | |
| Water Absorption (23°C, 24hr) | ASTM D570 | 0.20 | % | |
| Molding Shrinkage (Flow Direction) | ASTM D955 | 0.5‑0.7 | % | |
| Molding Shrinkage (Transverse Direction) | ASTM D955 | 0.5‑0.7 | % | |
| Light Transmittance (3 mm) | ASTM D1003 | 89.0 | % | |
| Haze (3.2 mm) | ASTM D1003 | ＜0.8 | % | |
| Refractive Index | ASTM D542 | 1.585 | ‑ | |
| Mechanical Properties | Tensile Strength (Yield) | ASTM D638 | 61.8‑63.0 | MPa |
| Elongation at Break | ASTM D638 | 110 | % | |
| Flexural Strength | ASTM D790 | 90.2‑92.0 | MPa | |
| Flexural Modulus | ASTM D790 | 2340‑2400 | MPa | |
| Izod Notched Impact Strength (1/8″) | ASTM D256 | 87 | kg·cm/cm | |
| Izod Notched Impact Strength (1/4″) | ASTM D256 | 14.3 | kg·cm/cm | |
| Rockwell Hardness (M‑scale) | ASTM D785 | M77 | ‑ | |
| Compressive Strength | ASTM D695 | 78.0 | MPa | |
| Thermal Properties | Heat‑Distortion Temperature (1.8 MPa, Unannealed) | ASTM D648 | 125‑128 | °C |
| Heat‑Distortion Temperature (0.45 MPa, Unannealed) | ASTM D648 | 136 | °C | |
| Vicat Softening Temperature (B50) | ASTM D1525 | 150‑153 | °C | |
| Coefficient of Linear Thermal Expansion | ASTM D696 | 6.0‑8.0 × 10⁻⁵ | cm/cm/°C | |
| Thermal Conductivity | ASTM C177 | 0.20 | W/m/K | |
| Electrical Properties | Volume Resistivity | ASTM D257 | 3.0 × 10¹⁶ | Ω·cm |
| Dielectric Strength (1.6 mm) | ASTM D149 | 30 | kV/mm | |
| Relative Dielectric Constant (60 Hz) | ASTM D150 | 2.95 | ‑ | |
| Relative Dielectric Constant (1 MHz) | ASTM D150 | 2.90 | ‑ | |
| Dissipation Factor (60 Hz) | ASTM D150 | 0.0004 | ‑ | |
| Dissipation Factor (1 MHz) | ASTM D150 | 0.009 | ‑ | |
| Arc Resistance | ASTM D495 | 110 | sec | |
| Flame Retardant Performance | UL94 Rating (0.4 mm) | UL 94 | V‑2 | ‑ |
| UL94 Rating (1.59 mm) | UL 94 | V‑2 | ‑ |
Injection Molding Processing Parameters
| Processing Stage | Process Parameter | Suggested Value / Range | Unit | Remarks |
|---|---|---|---|---|
| Pre‑drying | Drying Temperature | 120 | °C | Critical requirement |
| Drying Time | 4‑8 | h | Ensure moisture content＜0.02% | |
| Recommended Dew Point | ＜‑40 °C (dehumidifying dryer recommended) | °C | General PC standard | |
| Injection Temperature | Rear Barrel Temperature | 230‑300 | °C | ‑ |
| Middle Barrel Temperature | 250‑320 | °C | ‑ | |
| Front Barrel Temperature | 250‑310 | °C | ‑ | |
| Nozzle Temperature | 270‑300 | °C | ‑ | |
| Melt Temperature | 260‑300 | °C | Do not exceed 310°C | |
| Mold Temperature | 70‑120 | °C | ‑ | |
| Injection Pressure & Speed | Injection Pressure (screw‑type) | 6‑14 | MPa | ‑ |
| Holding Pressure | 50%‑80% of injection pressure | MPa | Adjust according to product structure | |
| Injection Speed | Medium‑to‑fast | ‑ | Take advantage of high flowability | |
| Other Parameters | Screw Speed | 30‑120 | rpm | ‑ |
| Back Pressure | 0‑10 | bar | ‑ | |
| Cushion | 2‑6 | mm | ‑ |
Disclaimer: All above data is for reference only.
