Technical Data Sheet
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PTFE filled with Glass Film

PTFE filled with Glass films are part of Goodfellow's range of polymer laminates. This material combines polytetrafluoroethylene (PTFE) with a glass fiber reinforcement to produce a composite with enhanced mechanical and thermal properties compared to unfilled PTFE. The addition of the glass fibers also improves the strength and creep resistance of PTFE while maintaining its non-stick surface and chemical resistance. With 61 variations available, this versatile laminate can be customized for applications ranging from electrical insulators and thermal barriers to low-friction bearings and seals.
Formula: PTFE 25% GF
Thickness: 0.3mm
Length 1: 250mm
Length 2: 250mm
UOM Code: 515-877-70
SKU: 1000113547
Product Code: FP32-FM-000100

Tolerances

Foil
Thickness ±20%
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Tolerances

Foil
Thickness ±20%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Polymers

Chemical Resistance
Element Value
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
Mechanical Properties
Element Value
Coefficient of friction 0.08-0.1
Hardness - Rockwell D60-70 - Shore
Elongation at break( % ) 100-300
Tensile modulus( GPa ) 1.7
Izod impact strength( J m⁻¹ ) 144
Tensile strength( MPa ) Jul-20
Electrical Properties
Element Value
Dielectric constant @1MHz 2.2-2.35
Dissipation factor @ 1kHz 0.003
Dielectric strength( kV mm⁻¹ ) 40
Surface resistivity( Ohm/sq ) 10¹⁵
Volume resistivity( Ohmcm ) 10¹⁶
Physical Properties
Element Value
Flammability V0
Resistance to Ultra-violet Good
Limiting oxygen index( % ) 95
Water absorption - over 24 hours( % ) 0.15
Density( gcm⁻³ ) 2.25
Thermal Properties
Element Value
Upper working temperature( C ) 260
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.33-0.42@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 75-100
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