Main characteristics of methyl silicone oil
Good heat resistance: The bond energy of the main chain in methyl silicone oil molecules is very high, therefore it has excellent heat resistance and can maintain stability at high temperatures.
Good oxidation stability and weather resistance: Methyl silicone oil can resist the effects of oxidation and harsh environments, maintaining its stable performance.
Good electrical insulation: Methyl silicone oil has good dielectric properties, and its electrical characteristics change very little with temperature and frequency. Therefore, it is widely used in the electrical and electronic industries as a high-temperature resistant dielectric liquid.
Good hydrophobicity: Although the main chain of methyl silicone oil is composed of polar bonds Si-O, it has excellent hydrophobicity due to the outward orientation of non-polar alkyl groups on the side chains, which prevent water molecules from entering the interior.
Small viscosity temperature coefficient: Methyl silicone oil has a low viscosity and changes little with temperature, which makes it perform well in many applications, such as damping devices.
High compressibility: Due to the helical structure and large intermolecular distance of methyl silicone oil molecules, it has high compressibility and can be used as a liquid spring.
Low surface tension: Methyl silicone oil has a low surface tension, indicating high surface activity, thus possessing excellent defoaming and anti foaming properties, isolation properties from other substances, and lubrication properties.
Non toxic, odorless, and physiologically inert: From a physiological perspective, siloxane polymers are one of the least active compounds known. Dimethyl silicone oil is inert to living organisms and has no rejection reaction with animal bodies, making it widely used in the medical and health fields.
Good lubricity: Methyl silicone oil has many excellent properties as a lubricant, such as high flash point, low solidification point, thermal stability, low viscosity change with temperature, non corrosive to metals, and no adverse effects on rubber, plastics, coatings, and organic paint films.