GPPS1540 is an easy flowing crystal polystyrene designed for extrusion or injection applications. It improves extruder output and thermoforming cycle time when mixed with a high impact polystyrene such as HIPS7240.It is particularly suitable for glossy- layer coextrusion. This grade has food contact approval. Application: Packaging articles,petri dishes,office equipments,pen barrels,crisper boxes for refrigerators,cups,food containers gloss layer coextrusion.anionic styrene butadiene copolymer dilution.
| Properties | Unit | Typical value | Test Method |
| MELT FLOW INDEX(200°C-5KG) | g/10min | 11 | ASTM D-1238 |
| STYRENE RESIDUAL MONOMER | PPM | <500 | CLG LABPSG004 (ATOFINA TEST METHOD) |
| VICAT SOFTENING POINT ( 50 °C/hr 1kg) | oC | 91 | ASTM D-1525 |
| TENSILE STRESS AT BREAK | MPa | 42 | ASTM D-638 |
| ELONGATION AT BREAK | % | 2 | ASTM D-638 |
| TENSILE MODULUS | MPa | 3100 | ASTM D-638 |
| ROCKWELL HARDNESS | - | SCALE/L70 | ASTM D-785 |
All above mentioned data are typical values and not to be construed as real specifications.Users should
confirm results by their own tests.For more information about guaranteed items, please refer to S.S.S.(standard
sales specifications)
Density and shrinkage of this grade are approximately around 1.04 kg/lit & (0.4-0.7)%(ASTM D-955)
respectively.
All test are carried out at 23°C , unless otherwise stated.
If the injection molding products quality is affected by moisture,granules of GPPS could be dried at 70°C for 2-
4 hours.