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Ensinger PEI

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DuPont™ Kapton® 500HN Polyimide Film, 125 Micron Thickness
Categories: Polymer; Film; Thermoset; Polyimide, TS; Polyimide, Thermoset Film
Material Notes: Film thickness 125 micron (5.0 mil)

All purpose polyimide film. Can be laminated, diecut, slit, formed, or adhesive-coated. Available in thicknesses from 0.3 mil (7.5 µm) to 5 mil (125 µm).

General Kapton® information: Kapton® is synthesized by polymerizing an aromatic dianhydride with an aromatic diamine. It has excellent chemical resistance; there are no known organic solvents for the film. It does not melt. It can be used at both high and low temperature extremes. Kapton® polyimide films can be used in a variety of electrical and electronic uses: wire and cable tapes, formed coil insulation, substrates for printed circuit boards, motor slot liners, magnet wire insulation, transformer and capacitor insulation, magnetic and pressure-sensitive tapes, and tubing.

Data provided by DuPont High Performance Films.
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Physical PropertiesOriginal ValueComments
Density 1.42 g/cc
Water Absorption 2.8 %24 hr/23°C. ASTM D570
Moisture Absorption at Equilibrium 1.8 %50% RH; 23°C
Water Vapor Transmission 3.50 g/m²/day25 µm film; ASTM E-96-92
Oxygen Transmission 9.90 cc-mm/m²-24hr-atm25 µm film; ASTM D1434-82; 50% RH
Thickness 125 mil
 
Mechanical PropertiesOriginal ValueComments
Film Tensile Strength at Yield, MD 69.0 MPa25 µm film; 3% yield point, orientation not specified; ASTM D882-91
Film Elongation at Break, MD 75 %Orientation not specified; ASTM D882
Poissons Ratio 0.34Avg. three samples elongated at 5%, 7%, 10%
Secant Modulus 2.80 GPaASTM D882
Impact Test 0.780 J
@Thickness 0.0250 mm		film; Impact strength per DuPont Pneumatic Impact Test
Coefficient of Friction, Dynamic 0.48film to film; ASTM D1894-90
Coefficient of Friction, Static 0.63film to film; ASTM D1894-90
Film Tensile Strength at Break, MD 221 MPaOrientation not specified; ASTM D882
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 1.00e+10 ohm-cmin damp heat; IPC-TM-650; Method 2.5.17
 1.00e+17 ohm-cmper ASTM D257-91
Dielectric Constant 3.5
@Frequency 100000 Hz
 3.6
@Frequency 1000 Hz		Use evaporated metal electrodes, two terminal system of measurement at standard conditions.; ASTM D150
Dielectric Strength 154 kV/mmFlat sheets in air; 1/4 in diameter brass electrodes with 0.8 mm edge radius; 60 cps AC at 600V/s; ASTM D149-81
Dissipation Factor 0.0020
@Frequency 1000 Hz
 0.0090
@Frequency 100000 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 20.0 µm/m-°C
@Temperature -14.0 - 38.0 °C		25 µm film; ASTM D696-91
 32.0 µm/m-°C
@Temperature 100 - 200 °C		25 µm film
 40.0 µm/m-°C
@Temperature 200 - 300 °C		25 µm film
Specific Heat Capacity 1.09 J/g-°CDifferential Calorimetry
Thermal Conductivity 0.120 W/m-KASTM F433-77
Maximum Service Temperature, Air 400 °CKapton® can function after brief exposure to 400°C (750°F). Various grades are UL rated for continuous service at 220-240°C (430-460°F).
Minimum Service Temperature, Air -269 °CMaintains properties and flexibility
Glass Transition Temp, Tg 360 - 410 °CA 2nd order transition occurs in Kapton® between 360-410°C (680-770°F) and is assumed to be the Tg
Flammability, UL94 V-0
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.70
@Wavelength 589.3 nm		Na D line; ASTM D542-90

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