General Purpose Polystyrene (GPS) is manufactured by continuous mass polymerization of styrene monomer. It has high molecular weigkt, high heat grade, high melt strength, good clarity and mechanical strength. These grades are recommended for injection, good clarity goods, disposable cups, glass layer co-extrusion, packing articles, Petri dishes, etc.
Grade | MFI120°C/5kg | Vicat softening point120°C/1kg | Charpy Impact Stength |
|---|---|---|---|
| 1018 | 1.5 – 1.7 | 105 (50°C/1kg) | 52 |
| 1028 | 2.4-3 | 102 | 11 |
| 1034 | 3-3.5 | 90 | 11 |
| G1161L | 3-5 | 104 | — |
| 1038 | 3.3-3.8 | 101 | 10 |
| 1077 | 6.8-7.4 | 98 | 8 |
| 1084 | 8 | 91 | 10 |
| 1115 | 9-11 | 95 | 8 |
| G1551 | 9-11 | 92 | – |
| 1144 | 13-15 | 90 | – |
| 1233 | 21-23 | 85 | 9 |
