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Ethylene-Chlorotrifluoroethylene copolymer ( E-CTFE )

Material Information

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We stock and supply the following standard forms:
Film
Film

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Common Brand Names:
Halar
 
General Description:  

General Description : A very expensive, melt processable, semi-crystalline, whitish semi-opaque thermoplastic with good chemical resistance and barrier properties. It also has good tensile and creep properties and good high frequency electrical characteristics.

Applications include chemically resistant linings, valve and pump components, barrier films and release/vacuum bagging films.

   

Chemical Resistance

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

Electrical Properties

Dielectric constant @1MHz 2.3-2.5
Dielectric strength ( kV mm-1 ) 40
Dissipation factor @ 1kHz 0.002
Surface resistivity ( Ohm/sq ) 1014-1015
Volume resistivity ( Ohmcm ) 1015-1016

Mechanical Properties

Abrasive resistance - ASTM D1044 ( mg/1000 cycles ) 5
Coefficient of friction 0.07-0.08
Elongation at break ( % ) 200
Hardness - Rockwell R95
Izod impact strength ( J m-1 ) <1000
Tensile modulus ( GPa ) 1.4-1.6
Tensile strength ( MPa ) 48

Physical Properties

Density ( g cm-3 ) 1.68
Flammability V0
Limiting oxygen index ( % ) 60
Radiation resistance Fair
Water absorption - over 24 hours ( % ) <0.02

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 80
Heat-deflection temperature - 0.45MPa ( C ) 115
Heat-deflection temperature - 1.8MPa ( C ) 75
Lower working temperature ( C ) -75
Thermal conductivity @23C ( W m-1 K-1 ) 0.16
Upper working temperature ( C ) 130-170

Properties for Ethylene-Chlorotrifluoroethylene copolymer Film

Property Value
Dielectric Strength @25µm thick kV mm-1 196-236
Dissipation Factor @1MHz 0.013
Elongation at Break % 150-250
Heat-sealing Temperature C 246-260
Initial Tear Strength g µm-1 47
Permeability to Carbon Dioxide @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.4
Permeability to Nitrogen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.04
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.1
Permeability to Water @38C x10-13 cm3. cm cm-2 s-1 Pa-1 150
All information and technical data are given as a guide only. Although every effort has been made to ensure that the information is correct, no warranty is given as to its completeness or accuracy.

Buy Ethylene-Chlorotrifluoroethylene copolymer on-line

We stock and supply the following standard forms:
Film
Film

Choose a form to search our on-line catalog  

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