GPPS1340 is a high molecular weight crystal polystyrene for extrusion and injection molding. It is particularly useful in the production of sheet with high mechanical properties.GPPS1340 can also be used in dilution with HIPS7240 for extrusion of sheet for thermoforming. Application: sheet and profile extrusion,packaging,dilution of impact grades for extrusion,injection molding.
| Properties | Unit | Typical value | Test Method |
| MELT FLOW INDEX(200°C-5KG) | g/10min | 4 | ASTM D-1238 |
| STYRENE RESIDUAL MONOMER | PPM | <500 | CLG LABPSG004 (ATOFINA TEST METHOD) |
| VICAT SOFTENING POINT ( 50 °C/hr 1kg) | oC | 97 | ASTM D-1525 |
| TENSILE STRESS AT BREAK | MPa | 51 | ASTM D-638 |
| ELONGATION AT BREAK | % | 3 | ASTM D-638 |
| TENSILE MODULUS | MPa | 4410 | 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