Styrenix

GPPS PS 145D GR21

GPPS PS 145D GR21 (also known as Styrenix) is a General Purpose Polystyrene (GPPS) grade.
Suitable for: Disposable cutlery, cups, and packaging trays, CD/DVD cases, Refrigerator door liners, School stationery (rulers, pen casings).
Key properties: MFI 1133 g/10min @ 200 °C/5 kg | Tensile Strength 44 MPa | HDT 80°C at 1.8 MPa.
GradePS 145D GR21
MaterialGPPS
MFIMVR 15 cm³/10min @ 200°C/5kg
Request Quote

Material Snapshot

Grade
PS 145D GR21
Material Type
GPPS
Manufacturer
Styrenix
Brand
Styrenix
Density
1.046 g/cm³
MFI
MVR 15 cm³/10min @ 200°C/5kg
Supply Form
Granules

Applications

  • Disposable cutlery, cups, and packaging trays
  • CD/DVD cases
  • Refrigerator door liners
  • School stationery (rulers, pen casings)
  • Transparent display boxes
  • Lighting diffusers
  • Cosmetic containers

Key Features

  • Crystal clear optical transparency
  • High rigidity and stiffness
  • Easy to process and thermoform (MFI: 1133 g/10min @ 200 °C/5 kg)
  • Good dimensional stability
  • Cost-effective general purpose grade

Mechanical Properties

Impact Strength
Charpy notched: 3 kJ/m²; Charpy unnotched: <25 kJ/m²
Tensile Strength
44 MPa (yield)
Tensile Modulus
3300 MPa
Flexural Strength
70 MPa
Rockwell Hardness
Ball indentation 150 MPa

Thermal & Processing

Heat Deflection Temperature
80°C at 1.8 MPa
Vicat Softening Temperature
88°C
Melt Temperature Range
Melt: 180 - 260°C / Mold: 10 - 60°C
Processing Temp
Melt: 180 - 260°C / Mold: 10 - 60°C

Performance Properties

Electrical Properties
Dielectric strength: 135 kV/mm; Volume resistivity: >1E16 Ohm·m; Relative permittivity: 2.5
Water Absorption
<0.1% (saturated, 23°C)
Mold Shrinkage
0.3–0.6%

Need help selecting the right grade?

Send us your application requirement and our team will help identify suitable material options.

Share your application, processing method, required properties, and estimated quantity for faster assistance.

Submit Inquiry