Silicon powder is made of natural quartz or fused quartz through crushing, ball milling (or vibration, jet crushing), flotation, pickling, purification and high-purity water treatment. Silica powder is a neutral inorganic filler with stable physical and chemical properties. Its chemical composition is sio2. It does not contain crystal water and is not reactive. It does not react with most acids and bases. Has strong corrosion resistance.

It has good wettability to various resins, good adsorption performance, easy to mix, and does not produce unity. High hardness can improve the tensile, compression, impact strength, abrasion resistance and flame retardancy of the cured product. This will increase the thermal conductivity. Because of its fine particle size, reasonable distribution and high specific surface area, it can effectively increase the thickness, reduce and eliminate precipitation and stratification. The cost of various products can be reduced by adding silicon powder. In theory, the smaller the particle size of silica, the better the combination of the filling system.

However, in the process of mixing and bonding copper clad laminates, the finer the silica, the easier it is to agglomerate without dispersing. The filler is not uniformly distributed in the glass fiber, and the amount of solvent needs to be increased during the mixing and bonding process, which is prone to sedimentation. The impregnation of the glass fiber during bonding becomes poor. Due to the filtering effect of the glass fiber paper, the filler is in the glass fiber paper The distribution is uneven. Therefore, from a technical point of view, choosing a reasonable granularity category is a very important parameter. Silica generally recommends silica with an average particle size of 1.5 microns to 3 microns.

The above is a small series, to give you a brief introduction to the strong corrosion resistance of silica powder, you can briefly understand. The content is for your reference only. If you need more information, please keep an eye on the update of our website!