Data Sheet

Koppe-Platz 1
92676 Eschenbach - Germany
Tel.:
Fax:
[e-mail]
www.kerafol.com
+49 (0) 96 45 - 88 300
+49 (0) 96 45 - 88 390
U 85
Keratherm silicone free U-Film
In case of concerns about using silicones,
we offer you a ceramic-lled polyurethane
lm as an alternative material. Besides
good thermal and outstanding electrical
properties, these lms are characterized by
very good perforation strength.
These good physical properties are mat-
ched with an excellent price-performance
ratio.
Applications
■ medical applications
■ laser equipment
■ lighting systems
■ CD-rom drives
■ aero units
■ space units
Optionally available with
adhesive coating!
*details see page 60 **Kerafol test according to UL
Properties
Colour
Thermal Properties
Thermal resistance R
th
Thermal impedance R
ti
Thermal conductivity λ
Electrical Properties
Breakdown voltage U
d; ac
Dielectric breakdown E
d; ac
Volume resistivity
Dielectric loss factor tan δ
Dielectric constant ε
r
Mechanical Properties
Measured thickness (+/-10%)
Hardness
Tensile strength
Elongation
Physical Properties
Application temperature
Density
Flame rating
Possible thickness
Unit U 85
light blue
K/W 0.165
°Cmm²/W 60.2
Kin²/W 0.091
W/mK 3.0
kV 6
kV/mm 30
Ωm 4.08 x 10
9
1 26 x 10
-3
1 1.96
mm 0.200
Shore A 70 - 85
N/mm² -
% -
°C -40 to +150
g/cm³ 1.44
UL-94 V-0**
mm 0.125 - 0.300
Compression U 85
0.15
0.17
0.19
0.21
0.23
0.25
0 10 20 30 40 50 60 70
thermal resistance [K/W]
pressure [N/cm²]
Compression U85
Important notes on page 2 / back