Polyurethane - Reinforced Microcellular Elastomer

Aug 16 2001

Advantages

Highest flexural modulus, HDT and surface hardness, best surface finish, friction, and lowest linear expansion compared with other thermosetting polyurethane’s.

Disadvantages

Highest density, tendency to warp, volume unit cost and lowest elongation at break compared with other thermosetting polyurethane’s.

Typical Properties

Property

Value

Density (g/cm3).

1.3

Surface Hardness

SA98

Tensile Strength (MPa)

12

Flexural Modulus (GPa)

1.5

Notched Izod (kJ/m)

0.9

Linear Expansion (/°C x 10-5)

8

Elongation at Break (%)

5

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

80

Water Absorption (%)

0.4

Oxygen Index (%)

24

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

12

Dielectric Strength (MV/m)

16

Dissipation Factor1kHz

0.004

Dielectric Constant  1kHz

6

HDT @ 0.45 MPa (°C)

160

HDT @ 1.80 MPa (°C)

80

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

NA

Mould Shrinkage (%)

0.9

Mould Temp. Range (°C)

NA

Applications

Housings and panels.

 

Source : Abstracted from Plascams

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

 

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