Amorf. thermoplastic with low humid absorption; when foamed well known as EPS (‘Expanded Polystyrene’); rarely re-enforced with glas fibers.
Specific properties
Mass: 1,05 g/cm3
Mechanical properties:
Stiff, hard, brittle. Low Charpy and impact resistance.
Thermal properties:
Applicable up to +70ºC.
Burns very well with sooty flame without dripping.
Colour/surface
Glass clear transparent.
Can be coloured in almost any colour be it transparent or opaque; with high surface gloss.
Yellowing occur in UV-light
Processing
Well injection mouldable;
Well gluable with solvent glues (mostly based on Toluol, DiChlormethane, Butylacetate in which 2% PS is solved) ;
Gluable to other materials by 2-k glues.
Good weldable through different weld techniques;
Can be mechanically processed (milling, turning, drilling…)
Printable (tampon, film, silk screen printing)
Metallising through vacuum
Applications
- High gloss transparent packaging for cosmetics, pen’s, cd’s and dvd’s, d-i-y articles, desk accessories …
- Lights in all sorts for interior lighting …
- displays in electronics …
- Simple toys, model kits …,
- disposable dinnerware (aerospace), storage aids, combs, toothbrushes, …
| Young's modulus | 3250 | MPa |
| Shear modulus | 750 | MPa |
| Tensile strength | 46 | MPa |
| Elongation | 3.4 | % |
| Fatigue | 20 | MPa |
| Bending strength | 75 | MPa |
| Hardness | 72.5 | Rockwell |
| Impact strength | 5 | J/cm |
| Yield strength | 0 | MPa |
| Thermal expansion | 70 | E-6/K |
| Thermal conductivity | 0.15 | W/m*K |
| Specific heat | 1300 | J/kg*K |
| Vicat | 100 | °C |
| Melting temperature | Amorphou | °C |
| Glass temperature | 89 | °C |
| Minimum service temperature | -10 | °C |
| Maximum service temperature | 90 | °C |
| Density | 1045 | kg/m3 |
| Resistivity | 1E+22 | Ohm*mm2/m |
| Breakdown potential | 130 | kV/mm |
| Dielectric loss factor | 0.0001 | |
| Friction coefficient | 0.4 | |
| Refraction index | 1.585 | |
| Shrinkage | 0.5 | % |
| Water absorption | 0.1 | % |