3. High surface activity and small supporting force

Because polysiloxane has a symmetrical molecular structure and its functional groups are non-polar functional groups, the entire chemical formula is non-polar. The interaction force between molecular structures is small, and the bonding force of the molecular structure itself is also small, so the interfacial tension is small. When it is dispersed on the surface of a substance with a large interfacial tension, the substance can be separated, and because it interacts with the substance itself The interaction force between the molecular structures is also small, so it can reduce the interfacial tension of the material, making it less likely to produce foam. This is why methyl silicone oil can be used in paint making to demulsify. Therefore, it can be used as a silicone defoaming agent and leveling agent in paint to prevent shine, black spots, etc. on the paint layer. The usage amount is: 0.2%~0.3%.