Silicone oil is a type of poly siloxane compound with a special structure. Its lubricating and insulating properties stem from the unique design of its molecular chain. It is widely used in industries and electronics.
In terms of lubrication properties, the main chain of silicone oil molecules is a silicon-oxygen bond structure, with high bond energy and weak intermolecular forces, making it have excellent high and low temperature stability and low friction coefficient. Within the wide temperature range of -50℃ to 200℃, the viscosity of silicone oil changes very little, enabling it to continuously form a uniform oil film and avoid lubrication failure due to temperature fluctuations. At the same time, its chemical inertness is strong, and it is unlikely to react with metals, rubber, etc., which can reduce component wear and extend equipment lifespan. For example, in precision bearings and automotive engine seals, silicone oil can effectively reduce mechanical friction loss, and its anti-aging property is superior to traditional mineral oil.
In terms of insulation properties, silicone oil molecules do not contain polar groups, and the molecular chain is regular, making them have extremely high volume resistivity and breakdown voltage, capable of blocking current leakage in high-voltage environments. In addition, its tangent of dielectric loss angle is low, and it has low energy loss in high-frequency electric fields, making it suitable as an insulating medium for electronic components. At the same time, silicone oil is not prone to absorbing moisture, and its insulation performance is not easily degraded even in a humid environment. It is commonly found in transformer insulating oil, capacitor impregnating agents, and electronic chip heat dissipation insulation coatings, ensuring the safe operation of electronic equipment in complex conditions.