Physical Properties
- Bulk Density: Measured for pellets per ISO 60, bulk density is 0.660 g/cc (0.0238 lb/in³), indicating packing density in granular form.
- Density: Determined by ISO 1183-1, density is 1.20 g/cc (0.0434 lb/in³), a key parameter for mass-to-volume ratio in material design.
- Moisture Absorption at Equilibrium: At 50% RH per ISO 62, moisture absorption is 0.12%, ensuring dimensional stability in humid conditions.
- Water Absorption at Saturation: As per ISO 62, water absorption at saturation is 0.30%, critical for assessing long-term water resistance.
- Oxygen Transmission: For 100 µm film, rate is 650 cc-mm/m²-24hr-atm (1650 cc-mil) per ISO 2556, measuring gas permeability.
- Nitrogen Transmission: At 100 µm film thickness, rate is 120 cc-mm/m²-24hr-atm (305 cc-mil) per ISO 2556 for inert gas barrier evaluation.
- Carbon Dioxide Transmission: With 100 µm film, rate is 3800 cc-mm/m²-24hr-atm (9650 cc-mil) per ISO 2556, relevant for packaging applications.
- Linear Mold Shrinkage: Ranges 0.0060–0.0080 cm/cm (in/in) parallel/normal per ISO 2577, indicating typical dimensional change during molding.
- Linear Mold Shrinkage, Flow: For 60x60x2 mm samples at 500 bar (ISO 294-4), flow shrinkage is 0.0070 cm/cm (0.0070 in/in).
- Linear Mold Shrinkage, Transverse: At 500 bar (ISO 294-4), transverse shrinkage is 0.0075 cm/cm (0.0075 in/in) for molded parts.
- Melt Flow: Per ISO 1133, melt flow rate is 10 g/10 min at 300°C (572°F) under 1.20 kg (2.65 lb) load, reflecting processability in molding.
Polymer Properties:
- Base Material: Polycarbonate (PC)
- Modification Features:
- Flame – retardant, UV – resistant, and high – impact properties.
- Good heat resistance and dimensional stability.
- Suitable for thin – walled and complex part injection molding.
- Excellent chemical resistance for harsh environments.
Applications:
Makrolon 2858 is used in a variety of injection-molded medical devices and healthcare products.
- Surgical and Diagnostic Instruments: Components that require clarity, strength, and the ability to be sterilized.
- Drug Delivery Devices: Housings and components for devices like auto-injectors.
- IV Connectors and Housings: Its high impact strength and sterilization resistance make it reliable for fluid management systems.
- Laboratory Equipment: Parts for labware and diagnostic equipment that need to be transparent and withstand cleaning or sterilization cycles.
