High Impact Polystyrene - HIPS

May 11 2001

Polymer Type

Thermoplastic

Advantages

Tougher than polystyrene.  Cheap.  Easily processed.

Disadvantages

Reduced electrical properties.  Reduced transparency.  Increased moisture absorption.

Typical Properties

Property

Value

Density (g/cm3) 1.08

 

Surface Hardness

RM30

Tensile Strength (MPa)

42

Flexural Modulus (GPa)

2.1

Notched Izod (kJ/m)

0.1

Linear Expansion  (/°C x 10-5)

7

Elongation at Break (%)

2.5

Strain at Yield (%)

1.8

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.2

Oxygen Index (%)

18

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

15

Dissipation Factor 1kHz

0.0006

Dielectric Constant  1kHz

2.8

HDT @ 0.45 MPa (°C)

85

HDT @ 1.80 MPa (°C)

75

Material. Drying  hrs @ (°C)

2 @ 70

Melting Temp. Range (°C)

210 - 270

Mould Shrinkage (%)

0.5

Mould Temp. Range (°C)

20 -  50

Applications

As for Polystyrene for quality goods e.g. toys, household appliances, cases, boxes, and calculators, computer housings.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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