What is the reason for the powdery precipitation of electronic sealing adhesive
For novice users who use silicone electronic sealing adhesive, they may find a layer of powdery sediment at the bottom of the purchased adhesive barrel, so they may suspect whether there is a problem with the adhesive and whether it will affect the use. So, what is the situation? Below, we will provide a professional analysis and interpretation of the origin of the sediment.
We can find that by comparing transparent and colored silicone sealants, transparent ones can only rely on the thermal conductivity and flame retardant properties of the silicone liquid material itself, with a thermal conductivity of only 0.2~0.3W/m · K, while colored silicone sealants can reach around 1.0W/m · K after adding thermal conductive powder.
From the above analysis, we can see 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 properties of silicone sealant. Before mixing AB, it only needs to be stirred first, so there is no need to worry about whether it will affect the sealing effect.