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Tech Brief  > PTEF
 
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Polytetrafluoroethylene - PTFE 25% Glass Fibre Filled

Polymer Type
Thermoplastic

Advantages
Higher modulus and surface hardness than PTFE. Improved creep resistance, dimensional stability and wear compared with PTFE.

Disadvantages
Lower impact strength, lower tensile strength and more expensive than unmodified PTFE.
 
Typical Properties
Property Value
Density (g/cm3)
Surface Hardness
Tensile Strength (MPa)
Flexural Modulus (GPa)
Notched Izod (kJ/m)
Linear Expansion (/°C x 10-5)
Elongation at Break (%)
Strain at Yield (%)
Max. Operating Temp. (°C)
Water Absorption (%)
Oxygen Index (%)
Flammability UL94
Volume Resistivity (log ohm.cm)
Dielectric Strength (MV/m)
Dissipation Factor 1kHz
Dielectric Constant 1kHz
HDT @ 0.45 MPa (°C)
HDT @ 1.80 MPa (°C)
Material. Drying hrs @ (°C)
Melting Temp. Range (°C)
Mould Shrinkage (%)
Mould Temp. Range (°C)
 2.25
SD72
17
1.00
0.12
12
250
N/Y
180
0.01
95
V0
15
40
0.003
2.8
125
110
NA
NA
NA
NA


 

 

Applications
Wear pads, piston rings, and microwave oven rotating platforms.
 
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