Polystyrene - PS Medium Impact

Sep 4 2001

Polymer Type

Thermoplastic

Advantages

Slightly improved toughness, tensile strength and elongation at break compared with unmodified polystyrene.

Disadvantages

Material is opaque. Reduced flexural modulus and slightly reduced HDT and dielectric strength compared with unmodified polystyrene.

Typical Properties

Property

Value

Density (g/cm3)

1.07

Surface Hardness

RM50

Tensile Strength (MPa)

42

Flexural Modulus (GPa)

2.5

Notched Izod (kJ/m)

0.04

Linear Expansion  (/°C x 10-5)

7

Elongation at Break (%)

4

Strain at Yield (%)

2.4

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.1

Oxygen Index (%)

18

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

18

Dissipation Factor 1kHz

0.001

Dielectric Constant  1kHz

2.7

HDT @ 0.45 MPa (°C)

88

HDT @ 1.80 MPa (°C)

78

Material. Drying  hrs @ (°C)

NA

Melting Temp. Range (°C)

210 - 260

Mould Shrinkage (%)

0.5

Mould Temp. Range (°C)

20 -  50

Applications

Audio and video cassette cases. Refrigerator door inner liners. Packaging cartons and containers. Toys. Beakers for automatic beverage dispensers. Clothes hangers. Trays for packed foods. Toothbrush handles. Telephone housings.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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