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Formula: PTFE
Form: Fiber
Material: Polytetrafluoroethylene (PTFE)
CAS Number: 9002-84-0
Commodity: Polymers
Filament Diameter: 0.0211mm
Colour: Brown
PTFE Fiber is just one of the wide range of advanced fibers from Goodfellow. Available in a comprehensive choice of 30 variations, it’s characterized by properties like high chemical resistance, low friction and a high melting point. Example applications of PTFE Fiber include its use as reinforcement for composites, in filtration and in protective apparel. The availability of PTFE Fiber in numerous diameters and forms means we can supply this specialty material in the precise specifications to meet the needs of research and industry alike.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Fiber
Filament Diameter ±25%
Number Of Yarns ±10%
Number Of Filaments ±10%
Tex Number ±10%
Length +5% / -1%

Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good
Halogens Good
Ketones Good
Mechanical Properties
Element Value
Coefficient of friction 0.05-0.2
Hardness - Rockwell D50-55 - Shore
Poisson's ratio 0.46
Elongation at break( % ) 400
Tensile modulus( GPa ) 0.3-0.8
Izod impact strength( J m⁻¹ ) 160
Tensile strength( MPa ) Oct-40
Electrical Properties
Element Value
Dielectric constant @1MHz 2-2.1
Dissipation factor @ 1MHz 0.0003-0.0007
Dielectric strength( kV mm⁻¹ ) 50-170
Surface resistivity( Ohm/sq ) 10¹⁷
Volume resistivity( Ohmcm ) 10¹⁸-10¹⁹
Physical Properties
Element Value
Flammability V0
Radiation resistance Poor
Refractive index 1.38
Resistance to Ultra-violet Excellent
Limiting oxygen index( % ) 95
Water absorption - over 24 hours( % ) 0.01
Density( gcm⁻³ ) 2.2
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 120
Heat-deflection temperature - 1.8MPa( C ) 54
Lower working temperature( C ) -260
Upper working temperature( C ) 180-260
Specific heat( J K⁻¹ kg⁻¹ ) 1000
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.25@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 100-160

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