High viscosity silicone oil and low viscosity silicone oil: the application logic behind the viscosity difference
The viscosity of silicone oil directly affects its application scenarios. Low viscosity silicone oil (such as 0.6-10cst) has strong fluidity and is easy to spread, commonly used as a moisturizer in cosmetics and a lubricant in the textile industry. Its low surface tension allows it to quickly penetrate the fiber gaps, enhancing the softness of the fabric. Medium viscosity silicone oil (20-1000cst) has become the preferred choice for lubricating grease and insulating oil due to its excellent chemical stability. For example, dimethyl silicone oil in transformer oil needs to maintain a specific viscosity range to ensure cooling efficiency. High viscosity silicone oil (>1000cst) is widely used in engine dampers and liquid floating gyroscopes due to its high shear resistance and shock absorption performance. For example, dimethyl silicone oil used as a suspension in a semi floating gyroscope must meet strict requirements such as high density and low viscosity temperature coefficient. The selection of viscosity requires comprehensive consideration of fluidity, load capacity, and environmental adaptability.