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Formula: FEP
Form: Coil
Material: Fluorinated ethylene propylene (FEP)
CAS Number: 25067-11-2
Commodity: Polymers
Transparency:
Clear/Transparent
The FEP Copolymer Coil is available in a total of 105 variations. A fluorinated ethylene propylene copolymer film, it features excellent chemical resistance and electrical insulating properties. With its low friction surface, FEP film finds use as a non-stick coating and as a high-performance electrical insulator in cables and wiring. The different coil sizes and thicknesses in Goodfellow's FEP Copolymer Coil range allow flexibility for industrial applications needing specific dimensions or properties.
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 |
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