Plastic Granules
TAIRIREX® GP525N General Grade Injection Molding
TAIRIREX GP525N is a high-performance general-purpose polystyrene (GPPS) resin designed for injection molding. With excellent flow properties, balanced rigidity, and thermal stability, it delivers consistent quality for lightweight, durable products. Ideal for applications requiring clarity, ease of processing, and cost-efficiency.
Associated Documents
ISO Data Sheet
ASTM Data Sheet
UL Product iQ
Processing Data
Typical property data
Physical Properties
- Melt Flow Index (MFI): 6.7 g/10min (ISO 1133, 200℃ × 5kg)
- Residual Monomer: Max 7000 ppm
Mechanical Properties
- Tensile Strength: 41 MPa (ISO 527, 23℃, 20mm/min)
- Tensile Modulus: 3300 MPa (ISO 527, 23℃, 1mm/min)
- Tensile Elongation: 3% (ISO 527, 23℃, 20mm/min)
- Flexural Strength: 70 MPa (ISO 178, 23℃, 2mm/min)
- Flexural Modulus: 3200 MPa (ISO 178, 23℃, 2mm/min)
Impact Properties
- IZOD Impact Strength: 1.6 kJ/m² (ISO 180, 23℃, 4mm, Unnotched)
- Charpy Impact Strength: 7.4 kJ/m² (ISO 179, 23℃, 4mm, Unnotched)
Thermal Properties
- Vicat Softening Point: 95℃ (ISO 306, Annealed 80℃ for 2hr, 4mm, 10N, 50℃/h)
- Heat Deflection Temperature (HDT): 91℃ (ISO 75/A, Annealed 80℃ for 2hr, 120℃/h, 1.8MPa, 4mm)
Flame Characteristics
- Combustibility: HB (UL-94, File No. E162823, 1.5 ~ 1.7mm)
Features & Benefits
Superior Flow
The melt flow index of 6.7 g/10min (ISO 1133) ensures smooth filling of intricate molds, reducing cycle times and minimizing defects like weld lines.
Reliable Impact Resistance
With an unnotched Charpy impact strength of 7.4 kJ/m² (ISO 179), this TAIRIREX PS resin withstands handling stress, making it durable for everyday use in toys or stationery.
Heat-Resistant Performance
A Vicat softening point of 95°C (ISO 306) ensures dimensional stability under moderate heat, suitable for food containers and lamp components.
Use & Applications
Food Containers
Heat-resistant cups, lids.
Toys & Stationery
Sturdy casings, pen barrels.
Household Items
Clear clothing hangers, lamp covers.
Consumer Goods
Cosmetic cases, CD/DVD packaging.