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Formula: ECTFE
Form: Foil/Film/Sheet
Material: Ethylene-chlorotrifluoroethylene (ECTFE)
CAS Number: 25101-45-5
Commodity: Polymers
ECTFE films from Goodfellow is a polymer film made from the copolymer ethylene chlorotrifluoroethylene. Known for its high strength, chemical resistance and excellent electrical properties, this film has a wide range of applications, including wire and cable insulation, chemical handling equipment and electrical components. With 24 variations available, Goodfellow's ECTFE film comes in multiple thicknesses, sizes, colors and surface finishes to suit diverse applications across industries like aerospace, chemical processing and electronics manufacturing.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Foil/Film/Sheet
Thickness ±20%

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-Fair
Halogens Good
Ketones Good
Mechanical Properties
Element Value
Coefficient of friction 0.07-0.08
Hardness - Rockwell R95
Elongation at break( % ) 200
Tensile modulus( GPa ) 1.4-1.6
Izod impact strength( J m⁻¹ ) 1000
Abrasive resistance - ASTM D1044( mg/1000 cycles ) 5
Tensile strength( MPa ) 48
Electrical Properties
Element Value
Dielectric constant @1MHz 2.3-2.5
Dissipation factor @ 1kHz 0.002
Dielectric strength( kV mm⁻¹ ) 40
Surface resistivity( Ohm/sq ) 10¹⁴-10¹⁵
Volume resistivity( Ohmcm ) 10¹⁵-10¹⁶
Physical Properties
Element Value
Flammability V0
Radiation resistance Fair
Limiting oxygen index( % ) 60
Water absorption - over 24 hours( % ) 0.02
Density( gcm⁻³ ) 1.68
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 115
Heat-deflection temperature - 1.8MPa( C ) 75
Lower working temperature( C ) -75
Upper working temperature( C ) 130-170
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.16@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 80

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