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Polytetrafluoroethylene – PTFE 15% Graphite Filled

Polymer Type

Thermoplastic
Advantages

Low coefficient of friction compared to other filled PTFE materials. Higher flexural modulus and surface hardness than unmodified PTFE.
Disadvantages

Lower notched impact strength, tensile strength, elongation at break and electrical characteristics compared with unmodified PTFE. Tendency of graphite to leach out.
Typical Properties

Property


Value

Density (g/cm3)


2.11

Surface Hardness


SD67

Tensile Strength (MPa)


17

Flexural Modulus (GPa)


1.03

Notched Izod (kJ/m)


0.14

Linear Expansion (/°C x 10-5)


12

Elongation at Break (%)


240

Strain at Yield (%)


65

Max. Operating Temp. (°C)


180

Water Absorption (%)


0.01

Oxygen Index (%)


95

Flammability UL94


V0

Volume Resistivity (log ohm.cm)


NA

Dielectric Strength (MV/m)


NA

Dissipation Factor 1kHz


0.0007

Dielectric Constant 1kHz


NA

HDT @ 0.45 MPa (°C)


120

HDT @ 1.80 MPa (°C)


95

Material. Drying hrs @ (°C)


NA

Melting Temp. Range (°C)


NA

Mould Shrinkage (%)


NA

Mould Temp. Range (°C)


NA

Applications

Bearings, antistatic applications, wear pads, piston rings.

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