Polyurethane - Hard Cast Elastomer

Advantages

Best tensile strength, fatigue index and wear characteristics compared with other thermosetting polyurethane’s.

Disadvantages

Highest linear expansion and worst flow characteristics compared with other thermosetting polyurethane’s.

Typical Properties

Property

Value

Density (g/cm3).

1.2

Surface Hardness

SA95

Tensile Strength (MPa)

50

Flexural Modulus (GPa)

0.022

Notched Izod (kJ/m)

1.06+

Linear Expansion (/°C x 10-5)

16

Elongation at Break (%)

400

Strain at Yield (%)

N/Y

Max. Operating Temp. (°C)

80

Water Absorption (%)

0.2

Oxygen Index (%)

24

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

12

Dielectric Strength (MV/m)

16

Dissipation Factor1kHz

0.003

Dielectric Constant  1kHz

9

HDT @ 0.45 MPa (°C)

20-

HDT @ 1.80 MPa (°C)

40

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

NA

Mould Shrinkage (%)

1.7

Mould Temp. Range (°C)

NA

Applications

Insulators, electrical switch and junction boxes. Bearings, gears and wheels.

 

Source : Abstracted from Plascams

For more information on Plascams please visit The Rubber and Plastics Research Association

 

Tell Us What You Think

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

Leave your feedback
Submit