Zhenjiang Chimei Polyrex® PG-33
Plastic Granules
Polyrex® PG-33 General Injection Molding Grade GPPS
Polyrex® PG-33 is a general-grade GPPS (General Purpose Polystyrene) resin designed for versatile injection molding applications. With excellent mechanical strength, thermal stability, and ease of processing, it’s ideal for durable consumer goods, electronics, and packaging solutions.
Typical property data
Physical Properties
- Melt Flow Rate (MFR): 8.0 cm³/10 min (ISO 1133, 200℃, 5 kg)
- Density: 1.04 g/cm³ (ISO 1183, 23℃)
Mechanical Properties
- Tensile Strength: 48 MPa (ISO 527, 50 mm/min)
- Flexural Strength: 75 MPa (ISO 178, 2 mm/min)
- Flexural Modulus (Elasticity): 3.1 GPa (ISO 178, 2 mm/min)
- Elongation at Break: 2.0% (ISO 527, 50 mm/min)
Impact Properties
- Izod Impact Strength: 4.0 kJ/m² (ISO 180, 4 mm/23℃)
- Charpy Impact Strength: 2.7 kJ/m² (ISO 179, 4 mm/23℃)
Thermal Properties
- Vicat Softening Point: 90℃ (ISO 306, 10N, 50℃/hr)
- Heat Distortion Temperature (HDT):
- 87℃ at 1.8 MPa (Annealed) (ISO 75-2)
- 76℃ at 1.8 MPa (Unannealed) (ISO 75-2)
Flame Characteristics
- Flammability: HB at 1.5 mm (UL 94, File No. E194560)
Use & Applications
- Lampshades
- Transparent food containers
- General daily necessities
Features & Benefits
1. High Mechanical Strength
Polyrex® PG-33 offers robust tensile and flexural strength, ensuring durability for demanding industrial and consumer applications.
2. Thermal Stability for Reliability
With a 90℃ softening point, it performs well under heat, making it reliable for high-temperature environments.
3. Efficient Mold Flow
Thanks to its excellent flowability (MFR: 8 cm³/10 min), it simplifies processing and enhances productivity in molding.