Teflon® FEP Film

Category: FEP , Perfluoroethylene Propylene Copolymer
Manufacturer: DuPont Fluoropolymers
Trademark: Teflon® FEP
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: O3UChp_Teflon-FEP-Film.pdf
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DuPont FEP film is a transparent, thermoplastic film that can be heat sealed, thermoformed, vacuum formed, heat bonded, welded, metalized, laminated - combined with dozens of other materials, and can also be used as an excellent hot-melt adhesive.
General Information
Features
  • Good Chemical Resistance
  • Good Electrical Properties
  • Good Impact Resistance
  • Good Tear Strength
  • Good Weather Resistance
  • Heat Sealable
  • Low Friction
  • Low Moisture Absorption
  • Non-Stick
Uses
  • Adhesives
  • Laminates
Appearance
  • Clear/Transparent
Forms
  • Film
Processing Method
  • Laminating
  • Thermoforming
  • Vacuum Forming
PhysicalNominal ValueUnitTest Method
Density 2.15g/cm³ASTM D1505
Dimensional Stability ASTM D1042
    Across Flow, Shrinkage, 150°C 2.2%
    Flow, Expansion, 150°C 0.72%
Water Absorption (24 hr)< 0.010%
MechanicalNominal ValueUnitTest Method
Coefficient of Friction (vs. Steel - Dynamic)0.10 to 0.30ASTM D1894
FilmsNominal ValueUnitTest Method
Film Thickness - Tested 25µm
Tensile Strength - MD ASTM D882
    Yield, 25 µm 12.0MPa
    Break, 25 µm 21.0MPa
Tensile Elongation - MD (Break, 25 µm)300%ASTM D882
Flexural Modulus - MD (25 µm)480MPaASTM D882
Elmendorf Tear Strength - MD (25 µm)130gASTM D1922
Graves Tear (25.0 µm) 3NASTM D1004
ImpactNominal ValueUnitTest Method
Impact Strength (25.0 µm) 77.0J/cmInternal Method
Additional InformationNominal ValueUnitTest Method
Burst Strength - Mullen (25.0 µm) 0.0760MPaASTM D774
MIT Folding Endurance - film (25.0 µm) 1.0E+4CyclesASTM D2176
Permeability
    Gas: Carbon Dioxide 25900cm³/m²/atm/24 hrASTM D1434
    Gas: Hydrogen 34100cm³/m²/atm/24 hrASTM D1434
    Gas: Nitrogen 5000cm³/m²/atm/24 hrASTM D1434
    Gas: Oxygen 11600cm³/m²/atm/24 hrASTM D1434
    Vapor: Acetic Acid 6.3g/m²/24 hrASTM E96
    Vapor: Acetone 15g/m²/24 hrASTM E96
    Vapor: Benzene 9.9g/m²/24 hrASTM E96
    Vapor: Carbon Tetrachloride 4.8g/m²/24 hrASTM E96
    Vapor: Ethyl Alcohol 11g/m²/24 hrASTM E96
    Vapor: Hexane 8.7g/m²/24 hrASTM E96
    Vapor: Water 7.0g/m²/24 hrASTM E96
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load ASTM D648
    0.45 MPa, Unannealed, 0.0250 mm 70.0°C
    1.8 MPa, Unannealed, 0.0250 mm 51.0°C
Peak Melting Temperature 260 to 280°CASTM D3418
Specific Heat (25°C)1170J/kg/°C
Thermal Conductivity (25°C)0.20W/m/KInternal Method
ElectricalNominal ValueUnitTest Method
Surface Resistivity 1> 1.0E+16ohmsASTM D257
Volume Resistivity 2> 1.0E+18ohms·cmASTM D257
Dielectric Strength ASTM D149
    23°C, 0.0250 mm, Air 260kV/mm
    23°C, 5.00 mm, Air 70kV/mm
Dielectric Constant ASTM D150
    1 kHz 31.93 to 2.02
    25°C 42.00
Dissipation Factor ASTM D150
    1 kHz 52.0E-4
    1 MHz 65.0E-4
    25°C 72.0E-4 to 7.0E-4
Arc Resistance 8(0.0250 mm)> 165secASTM D495
Insulation Resistance 9Internal Method
    100°C 3.5E+11ohms
    150°C 2.5E+11ohms
    200°C 6.5E+10ohms
FlammabilityNominal ValueUnitTest Method
Flame Rating (0.0250 mm)VTM-0UL 94
Oxygen Index (0.0250 mm)95%ASTM D2863
OpticalNominal ValueUnitTest Method
Refractive Index 1.341 to 1.347ASTM D542
Transmittance (25.0 µm)96.0%ASTM E424
Note Message
1 .-40 to 240°C
2 .-40 to 240°C
3 .-40 to 225°C
4 .100Hz to 1MHz
5 .-40 to 225°C
6 .-40 to 240°C
7 .100Hz to 1MHz
8 .Samples melted in arc did not track.
9 .Based upon 0.2 MF wound capacitor sections, using single laer, Teflon® 50A Film.
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