Polyimide - PI PTFE Lubricated

Aug 16 2001

Advantages

Lowest brittle temperature compared with other polyimides. Better friction and wear than unmodified polyimide.

Disadvantages

Lowest tensile strength and HDT compared with other polyimides contained within Plascams.

Typical Properties

Property

Value

Density   (g/cm3)

1.52

Surface Hardness

RM111

Tensile Strength (MPa)

40

Flexural Modulus (GPa)

3

Notched Izod (kJ/m)

0.04

Linear Expansion (/°C x 10-5)

5

Elongation at Break (%)

2

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

260

Water Absorption (%)

0.3

Oxygen Index (%)

42

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

14

Dielectric Strength (MV/m)

20

Dissipation Factor1kHz

0.006

Dielectric Constant  1kHz

6

HDT @ 0.45 MPa (°C)

260+

HDT @ 1.80 MPa (°C)

280

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

NA

Mould Shrinkage (%)

0.2

Mould Temp. Range (°C)

NA

Applications

Piston rings, electric motor bearings, machine tool bearings, pump bearings, valve discs, oven bearings.

 

Source : Abstracted from Plascams

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

 

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