Good heat resistance. Its bond energy is very high, so it has excellent heat resistance.
Good oxidation stability and weather resistance.
Good electrical insulation. Silicone oil has good dielectric properties, and its electrical characteristics change very little with changes in temperature and frequency.
Good hydrophobicity. Although the main chain of silicone oil is composed of polar bonds Si-O, the non-polar groups alkyl on the side chain are arranged outwardly, preventing water molecules from entering the interior and playing a hydrophobic role.
Small viscosity-temperature coefficient. The viscosity of silicone oil is low and changes little with temperature, which is related to the helical structure of silicone oil molecules.
High compressibility. Due to the helical structure characteristics of silicone oil molecules and the large distance between molecules, it has high compressibility.
Low surface tension. Low surface tension is a characteristic of silicone oil. Low surface tension indicates high surface activity.
Non-toxic, odorless and physiologically inert. From a physiological point of view, siloxane polymers are one of the least active compounds known.
Good lubricity. Silicone oil has many excellent properties as a lubricant, such as high flash point, low freezing point, good thermal stability, little change in viscosity with temperature, no corrosion to metals, and no adverse effects on rubber, plastics, coatings, and organic paint films. At the same time, it has low surface tension and is easy to spread on metal surfaces.
