Physical Properties
Specific Gravity: As measured by ASTM D792, the specific gravity is 1.20 g/cc, a dimensionless value relative to the density of water.
Density: Determined per ISO 1183, the density is 1.20 g/cc (0.0434 lb/in³), defining the material’s mass-to-volume relationship.
Linear Mold Shrinkage, Flow: Via the SABIC method for 3.20 mm (0.126 in) thickness, flow shrinkage ranges 0.0050–0.0070 cm/cm (in/in), critical for ensuring dimensional accuracy in mold design.
Melt Flow: At 300°C (572°F) under a 1.20 kg (2.65 lb) load, the melt flow rate is 25 g/10 min per ASTM D1238 (or 26 cm³/10 min per ISO 1133), indicating good processability for injection molding applications.
Polymer Properties:
- Base Material: Polycarbonate (PC)
- Modification Features:
- High flow property for efficient injection molding and complex part formation.
- Incorporates mold release agent for easy part ejection during manufacturing.
- Compliant with FDA food contact standards, ensuring safety for food – related applications.
- Available in limited transparent tint options for aesthetic flexibility in specific applications.
Applications:
The unique combination of properties in LEXAN HFR1724 makes it a great choice for various applications, especially in the consumer and electrical sectors.
- Food Contact Applications: A key feature of HFR1724 is that it’s designed to be compliant with food contact regulations, such as those from the FDA and European food agencies.
- Electrical and Electronic Devices: The resin’s flame retardancy is a crucial safety feature for electrical components, housings, and connectors.
- Lighting Components: The transparency and flame retardancy make it a good material for LED lamp covers and other lighting components where both safety and optical clarity are needed.
