SILICONE HEAT COMPOUND - UNICK

The Unick Silicone Heat Transfer Compound is a grease-like silicone material that is heavily impregnated with heat conductive metal oxides (zinc oxide). This combination of base and fillers produces a material that has a high thermal conductivity. Together with low bleed properties, the compound facilitates heat transfer from semiconductors to heat sinks by covering and smoothening pits and lands along the metal surfaces, thereby transferring heat uniformly and efficiently away from those surfaces and avoiding the development of "hotspots".

Features

• Composition
• Dimethyl Polysiloxane (silicone) 28%
• Zinc Oxide 65%
• Submicroscopic Pyrogenic Silica 4%
• Stabilizer 3%
• General Physical and Chemical Properties:
• Colour: Opaque White
• Odour: None
• Consistency: Penetration, worked and measured within 1 minute after working (ASTM D-217) = 260
• Bleed (after 24 hours @ 200ºC): 1.0%
• Evaporation (after 24 hours @ 200ºC): 1.0%
• Specific Gravity at 25ºC: 2.3
• Thermal Conductivity, K Factor, cal⁄cm²⁄ºC⁄sec⁄cm: 0.0015
• Dielectric Strength, kV at 0.1mm, ASTM D-149: 1.0
• Boiling Point: >250ºC
• Melting Point: 1,970ºC
• Flash Point: 230ºC
• Auto-ignition Temperature: 425ºC
• Vapour Pressure: >2hPa
• Relative Density: >⁄= 2.1 (@ 20ºC)