Silicone Free - MH&W Thermal Products

In case of concerns about silicones, Kerafol offers a ceramics-filled polyurethane film as a silicone free 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.

Flexible ceramic thermal conductive and isolating film Softtherm U 281 is especially designed for silicone sensitive applications and is an alternative material to the silicone based Softtherm films. The U 281 film has excellent electrical isolation and a very good thermal conductivity.

Need a Silicone Free Thermal Grease?
See also:
Keratherm Thermal Grease KP 12, silicone free

Possible Thickness:
U 80: 0.15mm – 0.3mm
U 85: 0.125mm – 0.3mm
U 90: 0.1mm – 0.3mm
U 281: 0.5mm – 3.0mm

Applications

  • medical application
  • laser equipment
  • space units
  • lighting systems
  • aero units
  • CD-Rom drives
  • U281: RD-RAM memory modules
  • U281: Heat pipe thermal solutions
  • U281: Control units
  • U281: Plasma supply console
  • U281: LED Applications
  • U281: Automotive engines
  • Property Symbol Unit U 80 U 85 U 90 Softtherm
    U 281
    Color blue light
    blue
    light
    blue
    brown
    Thermal Properties
    Thermal Resistance Rth K/W 0.20 0.165 0.09 0.60
    Thermal Impedance Rti °Cmm²/W
    Kin²/W
    73
    0.11
    60.2
    0.091
    32.9
    0.05
    240
    0.37
    Thermal Conductivity λ W/mK 1.8 3.0 6.0 2.0
    Electrical Properties
    Breakdown Voltage Ud;ac kV 4.0 6.0 4.0 7.0
    Dielectric Breakdown Ed;ac kV/mm 25 30 25 14
    Volume Resistivity Ωcm 1.44×1014 4.08×109 2.0×1011 5.32×109
    Dielectric Loss Factor tan δ 1 13.0×10-3 26×10-3 13.7×10-3 7.8×10-2
    Dielectric Constant εr 1 3.2 1.96 3.10 5.57
    Mechanical Properties
    Measured Thickness (±10%) mm 0.150 0.200 0.200 0.5
    Hardness Shore A 80 – 90 70 – 85 80 – 90 55 – 65
    Tensile Strength N/mm² 3.0 2.5
    Elongation % 130 150
    Youngs Modulus* N/cm² 244
    Physical Properties
    Application Temperature °C -40 to
    +125
    -40 to
    +150
    -40 to
    +125
    -40 to
    +130
    Density ρ g/cm³ 2.26 1.44 1.46.3 2.6
    Total Mass Loss TML Ma.-% < 0.9
    Flame Class UL 94V-0 94V-0 94V-0 94V-0

    * – Youngs Modulus sample size 30x30x2.5mm3;
    – variable contact pressure;
    – compression 50% of measured thickness;