CMC 70821 is a Kapton® film with good thermal conductivity and very good insulating properties even at high temperatures. One side is coated with a pressure sensitive adhesive, the other side with a phase change wax providing clean and easy pre-assembly as well as improved heat transfer.
Property
Value
Substrate
Kapton MT, thermally conductive
Colour
brown
Thermal conductivity in W/(m⋅K) of the Kapton film
0.46
Substrate thickness in mm
0.050 ± 15%
Adhesive thickness in mm
ca. 0.025
Thickness of the phase change wax in mm
ca. 0.018
Total thickness in mm
0.093 ± 10%
Adhesive Properties
Property
Value
Type of adhesive / coating
1st side acrylic adhesive 2nd side copolymer wax
Adhesive strength in N/cm according to internal method PV 1006-32 (180° peel from steel)
≥ 2 (1st side)
Thermal Properties
Property
Value
Flowing temperature of the wax in °C
ca. 95
Temperature performance (max.) in °C
180
Insulation class according to IEC 60085
F
Electrical Properties
Property
Value
Breakdown voltage based on IEC 60243-1 in Veff.
≥ 7'000
Mechanical Properties
Property
Value
Tensile strength in N/cm
≥ 50
Elongation at break in %
≥ 20
Other Properties
Property
Value
Liner
siliconized paper
® registered trade mark of DuPont de Nemours
The technical data are average values and do not replace the user's own testing. Subject to change without notice. The PDF data sheet is binding.