Polytetrafluoroethylene - PTFE 15% Graphite Filled

Sep 5 2001

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.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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