Styrene Butadiene - SB

Polymer Type

Thermoplastic

Advantages

Better toughness than Polystyrene. May form integral hinges.  Sterilisable by ethylene oxide or gamma radiation.

Disadvantages

More expensive than High Impact Polystyrene. Poor UV resistance.

Typical Properties

Property

Value

Density (g/cm3)

1.01

Surface Hardness

SD75

Tensile Strength (MPa)

28

Flexural Modulus (GPa)

1.6

Notched Izod (kJ/m)

0.08

Linear Expansion  (/°C x 10-5)

10

Elongation at Break (%)

50

Strain at Yield (%)

N/Y

Max. Operating Temp. (°C)

55

Water Absorption (%)

0.08

Oxygen Index (%)

19

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

12

Dissipation Factor 1kHz

0.0004

Dielectric Constant  1kHz

2.5

HDT @ 0.45 MPa (°C)

80

HDT @ 1.80 MPa (°C)

73

Material. Drying  hrs @ (°C)

1 @ 70

Melting Temp. Range (°C)

190 - 230

Mould Shrinkage (%)

0.5

Mould Temp. Range (°C)

30 -  50

Applications

Blister packaging.  Toys.  Replacing cellulosics, clear PVC in certain film applications.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type
Submit