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Polytetrafluoroethylene filled with Glass ( PTFE 25% GF )

Material Information

Buy Polytetrafluoroethylene filled with Glass on-line

Standard products are available in these forms
Film Rod Sheet
Film Rod Sheet

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Common Brand Names:
Fluon, Hostaflon
 
General Description:  

General Description : Filling PTFE with glass makes it stiffer and somewhat harder but lowers its tensile strength and impact resistance. It also improves the creep resistance, dimensional stability and wear.

Applications include wear pads, piston rings and rotating platforms in microwave ovens.
   

Chemical Resistance

Acids - concentrated Poor
Acids - dilute Good
Alcohols Good
Alkalis Good-Fair
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good
Halogens Good
Ketones Good

Electrical Properties

Dielectric constant @1MHz 2.2-2.35
Dielectric strength ( kV mm-1 ) 40
Dissipation factor @ 1kHz 0.003
Surface resistivity ( Ohm/sq ) 1015
Volume resistivity ( Ohmcm ) 1016

Mechanical Properties

Coefficient of friction 0.08-0.10
Elongation at break ( % ) 100-300
Hardness - Rockwell D60-70 - Shore
Izod impact strength ( J m-1 ) 144
Tensile modulus ( GPa ) 1.7
Tensile strength ( MPa ) 7-20

Physical Properties

Density ( g cm-3 ) 2.25
Flammability V0
Limiting oxygen index ( % ) 95
Resistance to Ultra-violet Good
Water absorption - over 24 hours ( % ) 0.15

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 75-100
Thermal conductivity @23C ( W m-1 K-1 ) 0.33-0.42
Upper working temperature ( C ) 260

Buy Polytetrafluoroethylene filled with Glass on-line

Standard products are available in these forms
Film Rod Sheet
Film Rod Sheet

Choose a form to search our on-line catalog  

Index