FEP Copolymer Coil

FEP Copolymer Coil, composed of poly(tetrafluoroethylene-co-hexafluoropropylene), combines the chemical inertness and thermal stability of PTFE with enhanced processability and flexibility from its hexafluoropropylene content. It exhibits low dielectric constant, extremely low dielectric loss, and outstanding resistance to moisture absorption, making it ideal for high-frequency and high-voltage insulation. The coiled form allows for easy deployment in continuous manufacturing and lining processes. Primary industries utilizing FEP Copolymer Coil include aerospace electronics, chemical processing, and advanced telecommunications. Specific technologies benefiting from it are microwave circuit boards with stable dielectric properties, corrosion-resistant chemical transport liners, and protective wraps for sensitive wiring in harsh environments. In research, FEP Copolymer Coil plays a crucial role in developing next-generation low-loss, high-reliability insulating materials for extreme service conditions. Its balance of thermal endurance, dielectric stability, and chemical resistance ensures its strategic value in both industrial innovation and precision scientific applications.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Coil

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
Halogens	Good
Ketones	Good

Mechanical Properties

Element	Value
Coefficient of friction	0.27-0.67
Hardness - Rockwell	R25-45, 60 Shore D
Poisson's ratio	0.48
Elongation at break( % )	150-300
Tensile modulus( GPa )	0.5-0.6
Izod impact strength( J m⁻¹ )	999999No Break
Tensile strength( MPa )	14-30

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.1
Dissipation factor @ 1MHz	0.0007
Dielectric strength( kV mm⁻¹ )	20@3.2mm
Surface resistivity( Ohm/sq )	10¹⁶
Volume resistivity( Ohmcm )	10¹⁸

Physical Properties

Element	Value
Flammability	V0
Radiation resistance	Poor
Refractive index	1.344
Resistance to Ultra-violet	Excellent
Limiting oxygen index( % )	95
Water absorption( % )	0.01
Density( gcm⁻³ )	2.15

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	50
Heat-deflection temperature - 1.8MPa( C )	70
Lower working temperature( C )	-250
Upper working temperature( C )	150-200
Specific heat( J K⁻¹ kg⁻¹ )	1100
Thermal conductivity( W m⁻¹ K⁻¹ )	0.19-0.24@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	83-104