Comparison and selection of thermal grease and silicone sheet

For the material between the CPU and the fan, if it is a normal desktop CPU on using the proposed using silicone grease, for such a position with respect to the hardware dismounting times or more. Apply grease comparison of other operating in the future.

And heat-conducting silica sheets are generally used in some places not easy to apply grease, such as the motherboard power supply part, now the motherboard power supply part of the quantity of heat are relatively large, but MOS tube part is not flat, smearing grease is not convenient, so you can paste on the silicon film. Or is need multiple parts and graphics in different parts of the contact card heat sink, silicone grease is not can be replaced by silicon film.

A comparison with the silicone film thermal grease:

The thermal conductivity of thermal conductivity and thermal conductivity of silica gel film thermal grease, respectively is 1.9-3.0w/m.k and 0.8-3.8w/m.k.

Insulating II: thermal grease due to the addition of the metal powder poor insulation, thermal conductivity of silica gel film insulation performance is 0.1mm thickness electrical insulation index in more than 4000 volts.

The form: thermal grease for condensate paste, conductive silica gel sheet sheet.

4.: thermal grease need to carefully daub (in case of large size more inconvenience smear), easy and smudgy around the device and causing a short circuit and scratch electronic components; heat-conducting silica sheets can be arbitrarily cut, tore off the protective film is attached directly to use, tolerance of very small, clean, saving labor costs.

Fifthly, thickness: as filler gap thermal conductive materials, thermal grease restricted, the thermal conductivity of silica gel film thickness ranging from 0.3-10mm, the application range is wide.

The effect of heat conduction: the same thermal grease thermal conductivity is better than thermal silica film, because of the small thermal grease resistance. Therefore, to achieve the same effect of heat conduction, the thermal conductivity of silicon film must be high ratio of thermal grease.

The new convenient installation, disassembly and re apply after the thermal grease is not convenient.

The price: thermal grease have been in common use, low price. Heat-conducting silica sheets used in notebook computers, LED lighting and other thin small precision electronic products, the price is a little high.