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Formula: FEP
Form: Filament
Material: Fluorinated ethylene propylene (FEP)
CAS Number: 25067-11-2
Commodity: Polymers
FEP Copolymer Filament is a fluorinated ethylene propylene copolymer, in filament form. FEP copolymer offers excellent chemical resistance and electrical insulation properties. With 35 variations, Goodfellow's range of FEP copolymer filaments is suitable for a wide array of scientific and industrial applications such as wire and cable insulation, linings for pipes and tanks, and protective coatings. The copolymer's high melting point also makes FEP filament useful in high temperature environments.
Tolerances
Filament
| Diameter | ±20% | |
|---|---|---|
| Length | +5% / -1% |
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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FEP Copolymer Rod Formula: FEP
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FEP Copolymer Film Formula: FEP
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Length 2: 150mm
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