PS
List of Plastic Material
List of Elastomer & Rubber
List of Metal Material
Price
$$$$$
Strength
Good rigidity and dimensional stability, easy to mold with excellent surface finish
Weakness
Brittle with lower impact resistance and limited heat resistance
Common Application
Packaging trays, disposable cutlery, appliance housings, toys, and electronics casings
| Property | Metric | English |
|---|---|---|
| Density | 1.04–1.06 g/cm³ | 64.9–66.2 lb/ft³ |
| Shore Hardness D | 70–80 | 70–80 |
| Min Temp. Air | -20 °C | -4 °F |
| Max Temp. Air | 70–90 °C | 158–194 °F |
| UL94 Fire Rating | HB | HB |
| Elongation at Break | 1.5–2.5 % | 1.5–2.5 % |
*Please Note: Material properties are for reference only and may vary by brand.
How Additives Improve PS Properties?
Various additives are blended into PS to modify its properties and meet different performance requirements.
- Impact Modifiers: Increase toughness and reduce brittleness, improving durability.
- Heat Stabilizers: Enhance resistance to thermal degradation during processing and use.
- Flame Retardants: Improve fire resistance for safety compliance.
- UV Stabilizers: Protect against color fading and material breakdown under sunlight.
- Plasticizers: Improve flexibility and reduce brittleness in specific applications.
- Antioxidants: Prevent oxidation, extending material lifespan.
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What is the heat resistance of PS material?
Standard PS has low heat resistance, around 70–90°C, and is not suitable for high-temperature applications. High-impact polystyrene (HIPS) offers slightly better heat resistance.
Is PS material brittle?
Pure PS is brittle and prone to cracking, but its impact resistance can be improved by adding toughening agents or through modification.
How environmentally friendly is PS material?
PS is recyclable but not biodegradable. For applications with strict environmental requirements, careful consideration is needed.
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