SynTherm® – Insulating Materials SynTherm® NKN

SynTherm® NKN is a flexible 3-ply insulation. It consists of a 25 μm polyimide film with calandered Nomex® layer on both sides.

The excellent dielectric and thermal properties of the polyimide film and the outstanding thermal and mechanical properties of the Nomex® layers result in a high quality insulating material. The outer aramide layers protect the polyamide film against the effects of hydrolysis and mechanical load. The high specific volume resistance and the dielectric strength are not affected by temperatures below 200 °C.

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Application

SynTherm® NKN is used in electric motors with a high load factor as slot insulation, phase insulation and wedges. Furthermore, it can be used in transformers and other electrical equipment as core, interlayer and final insulation if very high temperature resistance is required with simultaneous mechanical load.

Standards

  • Suitable for class C (200 °C) systems
  • Insulating material according to IEC 60626
  • UL approved e. g. E247773
  • Test standard IEC 60626-2
  • Sample conditioning acc. to standard atmosphere 23/50

Delivery forms

Total thickness in μm:
200, 300, 350, 400, 530

SynTherm® NKN can be supplied:

  • in slit rolls from widths of 6 mm (depending on thickness) and above
  • in rolls approx. width of 900 mm
  • in sheets approx. 600 x 900 mm
  • 900 x 1000 mm

Overall diameter of the slit rolls/ rolls as required
approx. 240, 330 or 450 mm.

Feathering:

  • depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
  • from widths of 10 to 240 mm and thickness of 0.20 mm

Base

Polyimid-film + calendered Nomex® 2-sided

Punched parts, bent & formed parts

We offer a wide range of punched and formed parts: Rolls, individual parts unsorted, sorted or stacked, adhesive on one or both sides, non-adhesive, with or without a grip tab.

 

More about punched parts

Technical data

Mechanical
Property Unit of measure
Total thickness mm 0.2 0.3 0.35 0.4 0.53
Thickness tolerance % ± 15 ± 15 ±15 ± 15 ± 15
Kapton® - thickness µm 25 25 25 25 25
Nomex® paper thickness µm 80 130 130/180 180 250
Specific weight g/m² 190 300 355 410 560
Elongation at break longitudinal % 15 15 15 15 15
Elongation at break transversal % 15 15 15 15 15
Tensile strength transversal N/10 mm 100 150 225 240 350
Tensile strength longitudinal N/10 mm 160 270 430 450 650
Electrical
Property Unit of measure
Total thickness mm 0.2 0.3 0.35 0.4 0.53
Dielectric strength kV 7 7 7 7 7