High Impact Polystyrene - HIPS Fire Retardant

May 11 2001

Polymer Type

Thermoplastic

Advantages

Excellent resistance to fire and flame spread, compared with unmodified HIPS.

Disadvantages

Almost twice as expensive as basic grade. Not suitable for food contact applications. Diminished tensile strength and toughness compared with unmodified HIPS.

Typical Properties

Property

Value

Density (g/cm3)

1.13

Surface Hardness

RM30

Tensile Strength (MPa)

28

Flexural Modulus (GPa)

2

Notched Izod (kJ/m)

0.06

Linear Expansion  (/°C x 10-5)

12

Elongation at Break (%)

2.5

Strain at Yield (%)

0.9

Max. Operating Temp. (°C)

50

Water Absorption (%)

0.3

Oxygen Index (%)

28

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

15

Dissipation Factor 1kHz

0.0006

Dielectric Constant  1kHz

2.8

HDT @ 0.45 MPa (°C)

95

HDT @ 1.80 MPa (°C)

85

Material. Drying  hrs @ (°C)

3 @ 70

Melting Temp. Range (°C)

210 - 250

Mould Shrinkage (%)

0.5

Mould Temp. Range (°C)

20 -  50

Applications

Housings for electronic equipment, rear panels for TV sets, distribution boxes, recording tape cassettes, radio cases.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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