What is the reason for the powdery precipitation of electronic sealing adhesive

For users who are new to using silicone electronic potting adhesive, they may find a layer of powdery precipitate at the bottom of the purchased adhesive bucket. Therefore, they may suspect that there is a problem with the adhesive and whether it will affect its use. So what is the situation? Below, we will provide professional analysis and interpretation of the origin of the precipitate for everyone.
We can find that transparent and colored organic silicon sealant can only rely on the thermal conductivity and flame retardant properties of the raw material of organic silicon liquid silicone, with a thermal conductivity coefficient of only 0.2~0.3W/m.K. However, colored organic silicon sealant with added thermal conductivity powder can reach about 1.0W/m. K.

From the above analysis, we can know that the sediment at the bottom of the bucket is not caused by product quality issues, but rather a powder that is beneficial for improving the thermal conductivity and flame retardant performance of organic silicon sealant. Before mixing AB, just stir it first, so there is no need to worry about whether it will affect the effect after sealing.