GPPS1160 is a high heat resistance and molecular weight crystal polystyrene for extrusion and bioriented polystyrene(OPS) industry.It is particularly useful in the production of thick sheet by direct inject gassing,where it gives expanded sheets with high mechanical properties. GPPS1160 can also be used in dilution with HIPS7240 for extrusion of sheet for thermoforming. This grade has food contact approval Application: shower cabinets,lighting thin films,insulation board,foam sheet of fruits trays,meat trays,egg boxes.
| Properties | Unit | Typical value | Test Method |
| MELT FLOW INDEX(200°C-5KG) | g/10min | 2.5 | ASTM D-1238 |
| STYRENE RESIDUAL MONOMER | PPM | <500 | CLG LABPSG004 (ATOFINA TEST METHOD) |
| VICAT SOFTENING POINT ( 50 °C/hr 1kg) | oC | 105 | ASTM D-1525 |
| ROCKWELL HARDNESS | - | SCALE/L70 | ASTM D-785 |
| TENSILE STRESS AT BREAK | MPa | 48 | ASTM D-638 |
| ELONGATION AT BREAK | % | 3 | ASTM D-638 |
| TENSILE MODULUS | MPa | 3200 | ASTM D-638 |
*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.