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Kapton® MTthermally conductive substrate polyimide filmDescriptionKapton® MT polyimide film is a homogeneous film possessing 3x the thermal conductivity and cut through strength of standard Kapton® HN. Its thermal conductivity properties make it ideal for use in controlling and managing heat in electronic assemblies such as printed circuit boards. Kapton® MT offers an excellent combination of electrical properties, thermal conductivity and mechanical toughness for its use in electronic and automotive applications. Kapton® MT has higher modulus than HN; this offers improved strength to the final product. As all Kapton® films, MT retains its properties for extended storage periods in original packaging at temperatures between 4-29°C (40-85°F). ApplicationsInsulation pads (heat sink), heater circuits, power supplies, ceramic board replacement AvailableMT is sold in 49" maximum width rolls. It is available in 1 mil, 1.5 mil, 2 mil and 3 mil. Other thicknesses can be custom produced. It can also be slit to meet specific requirements. Table 1 |
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| MD | TD | |||||||||
| Thermal conductivity, W/m·K | 0.37 | |||||||||
| Tensile strength, kpsi (MPa) | 27 (186) | 25 (172) | ||||||||
| Modulus, kpsi (GPa) | 480 (3.3) | 450 (3.1) | ||||||||
| Elongation, % | 80 | 90 | ||||||||
| Tear strength (initial) mil (g/µm) | 1.7 (30) | |||||||||
| Dimensional stability (400 °C [752 °F]), % | 1 | |||||||||
| Dielectric strength, V/mil (V/µm)
100 MT 300 MT |
5,400 (212)
4,500 (177) |
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| Dielectric constant (25 °C [77 °F]) | 4.2 | |||||||||
| Volume resistivity, ohm·sq | >104 | |||||||||
| Cut-through, lb | 40 | |||||||||
| Fold endurance | 200,000 cycles | |||||||||
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The information give herein is based on data believed to be reliable, but DuPont makes no warranties express or implied as to its accuracy and assumes no liability arising out of its use by others. This publication is not to be taken as a license to operate under, or recommendation to infringe, any patent.
Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, see "DuPont Medical Caution Statement", H-50102.
