One thermally conductive interface material thermally insulating silicone rubber and preparation thereof

The present invention discloses a thermal conductive silicone rubber insulating thermal interface material and a preparation method comprising the steps of: 1) a thermally conductive filler surface treatment; 2) according to different sizes of the thermally conductive filler particle size are sequentially blended with the silicone rubber base ; 3) High temperature vulcanized molding, or calendering; 4) secondary vulcanization, a thickness of 0.2 ~ 5mm controllable, a Shore A hardness of 10 to 60 degrees controllable, heat conductivity 0.8 ~ 2.5W / (m · K) controllable tear tear strength greater than 3kN / mm sheet-like thermally conductive interface material thermally insulating silica; 5) attached to a release film. The sheet-like silicone rubber thermal insulation thermal interface material having a high thermal conductivity, good insulation properties, high tear strength, stability, ease of use, etc., suitable for heat dissipation high power LED, tablet PCs, mobile phones, electronic devices such as power pads sheet.