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Polystyrene (General Purpose) GPPS |
APPLICATIONS
Toys and novelties, rigid packaging, refrigerator trays and boxes, cosmetic packs and costume jewellery, lighting diffusers, audio cassette and CD cases.
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PROPERTIES
Brittle, rigid, transparent, low shrinkage, low cost, excellent X-ray resistance, free from odour and taste, easy to process |
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PHYSICAL PROPERTIES
| Tensile Strength |
2.30 - 3.60 |
N/mm² |
| Notched Impact Strength |
2.0 - 2.5 |
Kj/m² |
| Thermal Coefficient of expansion |
80 |
x 10-6 |
| Max Cont Use Temp |
70 - 85 |
oC |
| Density |
1.05 |
g/cm3 | | |
RESISTANCE TO CHEMICALS
| Dilute Acid |
*** variable |
| Dilute Alkalis |
**** |
| Oils and Greases |
*** variable |
| Aliphatic Hydrocarbons |
**** |
| Aromatic Hydrocarbons |
* |
| Halogenated Hydrocarbons |
* |
| Alcohols |
** variable | | |
KEY
| * |
poor |
** |
moderate |
*** |
good |
**** |
very good | | |
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 Highly transparent cases made from crystal polystyrene. High transparency, low cost and easy mouldability have established its supremacy in presentation packing. |
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