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          PI-F polyimide FEP film

          PI-F polyimide FEP film
          Polyimide FEP film (PI-F) is Polyimide film coated with FEP resin on one side or double sides through the sintering process at high temperature, which combines the excellent properties of Polyimide film and FEP resin,high&low temp resistant,radiation resistant,excellent electrical properties,superior dimensional stability and heat sealable properties.
          Features
          1.High temperature electrical insulation
          2.Cut-through resistant
          3.High dielectric strength 4.High bond strength
          Applications
          1.Wire and cable insulation for downhole pumps and aircraft electrical systems.
          2.Turn insulation in Motors and Generators.3.Electrical insulation of Flexible Heater.
          Main Specification
          Items Unit WXCPI-FH WXCPI-FHF
          Thickness Um(mil) 31(1.2) 33(1.3) 50(2.0) 38(1.5) 50(2) 75(3.0)
          Structure FEP um 3.0 4.0 12.5 12.5 25.0 25
             PI   25.0 25.0 25.0 25.0 25.0 50
            FEP   3.0 4.0 12.5 0 0 0
          Thickness Tolerance % +/-10
          Tensile Strength≥ MD MPa 145 145 110 155 110 120
            TD   120 120 90 120 90 100
          Elongation at rupture≥ % 55 55 55 55 65 65
          Breakdown Strength ≥ Average MV/m 150 150 120 150 120 110
            Individual   120 120 110 120 100 100
          Peel Strength≥ F-F N/25mm 6.0 6.0 6.5 N/A N/A N/A
            F-H   N/A N/A N/A 6.0 6.0 6.0
          Surface Resistivity  200+/-5c(392F)  ≥ Ω 1.0×1013
          Volume Resistivity  200+/-5c(392F)  ≥ Ω·m 1.0×1010
          Dielectric constant (50Hz) 3.5±0.4
          Loss tangent (50Hz)  ≤ 4.0×10-3
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