General purpose polystyrene (GPPS) · General purpose polystyrene (GPPS)
Estyrenics GPPS 251
General purpose polystyrene with MVR 2-3.5 cm³/10 min and Vicat min. 99 °C
- Melt volume rate (200 °C / 5 kg)
- 2-3.5 cm³/10 min
- Vicat temperature
- ≥ 99 °C
- Tensile modulus
- 3,100 MPa
Description
Estyrenics GPPS 251 is a general purpose polystyrene (GPPS) from Egyptian Styrene and Polystyrene Production Company. The data sheet lists its standard sales specifications: physical, thermal, mechanical and general properties.
Technical properties
| Property | Value | Unit | Standard |
|---|---|---|---|
| Melt volume rate, MVR (200 °C / 5 kg) | 2-3.5 | cm³/10 min | ISO 1133 R |
| Vicat softening temperature (50 °C/h, 5 kg) | ≥ 99 | °C | ISO 306 B |
| Tensile strength at break (5 mm/min) | 50 | MPa | ISO R 527-2 |
| Tensile modulus (1 mm/min) | 3,100 | MPa | ISO R 527-2 |
| Elongation (5 mm/min) | 3 | % | ISO R 527-2 |
| Flexural strength (2 mm/min) | 100 | MPa | ISO 178 |
| Flexural modulus (2 mm/min) | 2,800 | MPa | ISO 178 |
| Unnotched Charpy impact strength (2 J pendulum) | 12 | kJ/m² | ISO 179 / 1 eU |
| Bulk density | 0.580 | g/ml | ISO 60 |
Manufacturer's standard sales specifications. Source: technical data sheet by Estyrenics – Egyptian Styrene and Polystyrene Production Company (Egipto).