PS - Polystyrene
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, …
This information is made available by Promolding. More information about Polymers and Polymer research or the usage of it, visit the website of Promolding or take a look at production techniques.
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PS - Polystyreen(NL), Polystyrene(EN), Polystyrol(DE) |
| Property | Min | Max | Unit |
| Young's modulus | 3000 | 3500 | MPa |
| Shear modulus | 700 | 800 | MPa |
| Tensile strength | 32 | 60 | MPa |
| Elongation | 2.8 | 4 | % |
| Fatigue | 20 | 20 | MPa |
| Bending strength | 50 | 100 | MPa |
| Hardness | 65 | 80 | Rockwell |
| Impact strength | 5 | J/cm | |
| Thermal expansion | 60 | 80 | e-6/K |
| Thermal conductivity | 0.14 | 0.16 | W/m.K |
| Specific heat | 1300 | 1300 | J/kg.K |
| Vicat | 100 | 100 | C |
| Melting temperature | Amorphou | Amorphou | C |
| Glass temperature | 80 | 98 | C |
| Service temperature | -10 | 90 | C |
| Density | 1040 | 1050 | kg/m3 |
| Resistivity | 1E+22 | 1E+22 | Ohm.mm2/m |
| Breakdown potential | 100 | 160 | kV/mm |
| Dielectric loss factor | 0.0001 | 0.0001 | |
| Friction coefficient | 0.35 | 0.45 | |
| Refraction index | 1.58 | 1.59 | |
| Thickness | 0.8 | 6.3 | mm |
| Shrinkage | 0.3 | 0.7 | % |
| Water absorption (at 50% hum.) | 0.1 | 0.1 | % |