Thermal conductivity of the thermal conductive silicone film in the industry has been a phenomenon: procurement to see the thermal conductivity, engineering to see the thermal resistance. In other words, when customers buy thermal conductive silicone

That is to say, when customers buy thermal conductive silicone film, if they are purchasing personnel, they are most concerned about the thermal conductivity of thermal conductive silicone film; if they are engineering or R&D personnel, they are concerned about the thermal resistance of thermal conductive silicone film.

If they are engineering or R&D personnel, their concern is the thermal resistance of the thermal conductive silicone film. From here, we can see that the thermal resistance of the thermal conductive silicon film has a great influence on the thermal conductivity.

First, the thermal conductivity is the same, the thickness of the same two thermal conductive silicone film, the thermal resistance of a small thermal conductivity far more than the thermal resistance of a large one, even the thermal conductivity of low, thermal resistance is also extremely low a thermal conductivity of silicone film will surpass the thermal conductivity of higher thermal conductivity, thermal resistance is also higher.

Even the one with low thermal conductivity and very low thermal resistance will surpass the one with higher thermal conductivity and higher thermal resistance. To use an easy-to-understand analogy, thermal

The greater the resistance, the more it will affect the heat transfer effect.

If there is only a very small resistance in the heat transfer process, then the heat transfer will be much smoother and the thermal conductivity will be better. Thermal grease is the best example, we all know that thermal grease has good thermal conductivity because its thermal

The reason is that its thermal resistance is much lower than that of the thermal conductive silicone film.

Second, the thermal conductivity of thermal conductive silicone film size thermal conductivity of thermal conductive silicone film industry is also known as thermal power or thermal conductivity. The thermal conductivity of thermal conductive silicone film is different, filled with

The thermal conductivity of silicone film is different, the filling of the thermal conductivity powder is different, and the formula ratio is also different. Usually, the thermal conductivity of silicone film below 3W is mostly filled with alumina as the thermal conductivity powder, while some high thermal conductivity silicone film must add a kind of powder called

Some high thermal conductivity silicone film must add a kind of thermal conductivity powder called boron nitride into its thermal conductivity can be improved. Boron nitride is more expensive than alumina in terms of raw material price.

Therefore, it is usually more expensive for the same size of thermal conductive silicon film. Of course, the higher the thermal conductivity, the better the thermal conductivity of the two types of silicon films with the same thickness and the same thermal resistance.

The higher the thermal conductivity, the better the thermal conductivity.

Third, the influence of the hardness of the thermal conductive silicone film the harder the thermal conductive silicone film, the worse the ability to fill the gap, the fit is not excellent thermal resistance will increase, thus affecting the thermal conductivity.

Thus, it will affect the thermal conductivity. The softer the hardness of the thermal conductive silicone film, the more fully fill the gap, thus increasing the effective contact area between the thermal conductive silicone film and the heat source and heat sink, reducing the contact

The softer the silicone film, the better the thermal conductivity. However, it is not the case that the softer the hardness is, the better, the country for the thermal conductive silicone film if too soft, the production line workers in the process of construction will appear

The deformation will occur and cannot be pasted. This situation is especially obvious when the area of thermal conductive silicone film is larger. The hardness of thermal conductive silicone film in the industry is generally 40-70Shore 00

Between

Four, the thickness of the thickness of the thermal conductive silicone film thermal conductive silicone film thickness range is very wide, can be achieved from 0.5mm-15mm, the thinner the thickness, the shorter the path of heat conduction

The thinner the thickness, the shorter the path of heat conduction, the smaller the thermal resistance, the faster the thermal conduction speed, the better the thermal conduction effect, conversely, the thicker the thickness of the thermal conductive silicone film, the corresponding increase in thermal resistance, the worse the thermal conduction effect.

The worse the thermal conductivity.