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The role of alumina filled balls in some aspects

wallpapers Industry 2020-10-29
Since silicone material's thermal conductivity is not healthy, thermally conductive silicone gaskets usually need to be filled with related materials to improve thermal conductivity.

Alumina is a very commonly used filler material. The thermal conductive silicone gasket filled with alumina plays the following roles:
1. Auxiliary heat dissipation:

Suppose the thermally conductive silicone gasket is filled with alumina. In that case, ordinary silica gel is a poor conductor, and directly sticking to the electronic components can only ensure relatively close contact between the two but cannot dissipate heat in a large area. To improve the heat dissipation performance, it can only be supplemented by adding materials such as alumina. Aluminum has good thermal conductivity, and this material is easy to produce and low in cost. High-quality alumina can effectively improve the overall heat dissipation capacity of the thermally conductive silicone gasket.

2. Improve flexibility:

When alumina is added to the silica gel, a physical, thermal conductivity grid will be formed inside the silica gel gasket. Because of the presence of this grid, the thermal conductivity is improved at once, and manufacturers generally use spherical alumina, Because the addition of spherical alumina can provide the flexibility of the thermally conductive silicone gasket, and at the same time the degree of crystallinity and density will be changed, which all affect the heat dissipation rate.

3. Improve the surface:

There are many kinds of thermally conductive materials. Another important reason for adding alumina to thermal conductive silicone gaskets is that when alumina is added, unique polymerization characteristics can be achieved. When a large amount of alumina is filled, the thermal conductivity can be improved. The surface performance of the silicone gasket, which brings better practicability.

Trunnano is one of the world's largest producers of Alumina powder. If you have any questions or needs, please contact Dr. Leo by email: brad@ihpa.net.

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