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Keratherm Silicone Free
 

Datasheets
Description
In case of concerns about silicones, Kerafol offers a ceramics-filled polyurethane film as an alternative material. Besides good thermal and outstanding electrical properties, these films are characterized by very good perforation strength. These good physical properties are achieved with an excellent price-performance ratio.
Applications
medical application
laser equipment
space units
lighting systems
aero units
CD-Rom drives
Available Thicknesses
U 23: 0.125mm, 0.250mm, 0.3mm, 0.4mm, 0.5mm
U 80: 0.15mm, 0.3mm
U 90: 0.1mm, 0.2mm
U 105: 0.5mm - 5.0mm
 
Keratherm Silicone Free
Property 
Symbol
Unit
U 23
U 80
U 90
U 105
Color  
white
light blue
blue
brown
Thermal Properties
Thermal Resistance
Rth
K/W
0.52
0.20
0.09
0.95
Thermal Impedence
Rti
°Cmm²/W
Kin²/W
208
0.32
73
0.11
32.9
0.05
-
Thermal Conductivity
l
W/mK
1.2
1.8
6.0
1.3
Electrical Properties
Breakdown Voltage
Ud;ac
kV
9.0
4.0
4.0
8.0
Dielectric Breakdown
Ed
Wcm
4.9x1011
1.44x1014
in test
in test
Dielectric
Loss Factor
tan d
1
8.0x10-2
1.30x10-2
in test
0.013
Volume Resistivity  
1
1.7
3.2
in test
-
Mechanical Properties
Overall Thickness
(±10%)
mm
0.225
0.150
0.200
0.5 - 5.0
Hardness  
Shore A
85 (A)
85 (A)
70 (A)
60 (A)
Tensile Strength  
N/mm²
5.0
3.0
2.5
-
Elongation  
%
250
130
150
-
Youngs modulus*  
N/cm2
-
-
-
886
Physical Properties
Density
r
g/cm³
2.32
2.9
2.9
-
Application Temperature  
°C
-40 to +90 
-40 to +125 
-40 to +125 
-40 to +110 
 
* - sample size 30mmx30mmx2.5mm; variable contact pressure; compression 50% of the measured thickness


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