Ethylene-Chlorotrifluoroethylene copolymer ( E-CTFE )

Material Information

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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

Electrical Properties

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

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

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