PC Shengtongjuyuan JY‑PC‑915RB
PC Shengtongjuyuan JY‑PC‑915RB
Material Introduction: PC Shengtongjuyuan JY‑PC‑915RB is a general‑purpose polycarbonate synthesized from diphenyl carbonate and bisphenol‑A. It features high strength, high transparency, good electrical insulation, flame retardancy and heat resistance (UL94 V‑0 flame retardant rating), as well as excellent dimensional stability, while presenting poor hydrolysis resistance. It is mainly applied in electronics & electrical, automotive, medical device and other industries.
Main Applications
- Electronic & Electrical Components: Flame‑retardant parts such as switches, relay housings, wire terminals, sockets and electrical appliance housings.
- Household Appliances: Housings and internal structural components for home appliances.
- Lighting Equipment: Housings and diffuser covers for lighting fixtures.
Physical & Mechanical Properties
| Property Category | Performance Parameter | Test Standard | Reference Range / Typical Value | Unit |
|---|---|---|---|---|
| Physical Properties | Density | ISO 1183 | 1.20‑1.22 | g/cm³ |
| Melt Mass‑Flow Rate (MFR) | ISO 1133 (300°C / 1.2 kg) | 10.0‑20.0 (estimated) | g/10 min | |
| Water Absorption (23°C, 24hr) | ISO 62 | 0.15‑0.35 | % | |
| Mechanical Properties | Tensile Strength (Yield) | ISO 527‑2 | 55‑65 | MPa |
| Flexural Strength | ISO 178 | 80‑95 | MPa | |
| Flexural Modulus | ISO 178 | 2200‑2400 | MPa | |
| Charpy Notched Impact Strength (23°C) | ISO 179/1eA | 10‑25 | kJ/m² | |
| Thermal Properties | Heat‑Distortion Temperature (1.8 MPa) | ISO 75‑2/Af | 120‑135 | °C |
| Heat‑Distortion Temperature (0.45 MPa) | ISO 75‑2/Bf | 130‑145 | °C | |
| Vicat Softening Temperature | ISO 306/B50 | 140‑150 | °C | |
| Flame Retardant Performance | UL94 Rating (1.5 mm) | UL 94 | V‑0 (estimated target grade) | ‑ |
| Glow‑Wire Ignition Temperature (GWIT) | IEC 60695‑2‑13 | ≥ 775 (0.75 mm, estimated) | °C |
Injection Molding Processing Parameters
| Processing Stage | Process Parameter | Suggested Value / Range | Unit | Remarks |
|---|---|---|---|---|
| Pre‑drying | Drying Temperature | 110‑120 | °C | Critical requirement, to prevent hydrolytic degradation, molecular weight drop and performance deterioration |
| Drying Time | 4‑6 | h | Ensure moisture content＜0.02% (dehumidifying dryer is recommended) | |
| Recommended Dew Point | ＜‑40 °C | °C | ‑ | |
| Injection Temperature | Rear Barrel Temperature | 260‑280 | °C | Actual temperature shall be adjusted according to actual MFR and product structure |
| Middle Barrel Temperature | 270‑290 | °C | ‑ | |
| Front Barrel Temperature | 280‑310 | °C | ‑ | |
| Nozzle Temperature | 270‑300 | °C | ‑ | |
| Melt Temperature | 280‑310 | °C | Do not exceed 320°C to avoid thermal decomposition | |
| Mold Temperature | 80‑110 | °C | Higher mold temperature helps reduce internal stress, improve surface gloss and demolding performance | |
| Injection Pressure & Speed | Injection Pressure | To be adjusted according to specific product and mold | MPa | Apply maximum feasible injection pressure within allowable range |
| Holding Pressure | 50%‑80% of injection pressure | MPa | Adjust by product structure and dimension to compensate shrinkage and reduce warpage | |
| Injection Speed | Medium | ‑ | Low‑speed injection for small gates; high‑speed injection is acceptable for other gate types | |
| Other Parameters | Screw Speed | Medium (40‑70 recommended) | rpm | Avoid excessive shear and overheating |
| Back Pressure | Moderate (0.3‑0.7 recommended) | MPa | Beneficial for melt homogenization; excessive back pressure will cause temperature rise |
Disclaimer: All above data is for reference only.
