Ethyl silicone oil (polydiethylsiloxane) is an important branch of organic silicon materials, which exhibits low surface tension, high and low temperature resistance (-60 β to 200 β), chemical inertness, and excellent lubricity due to its unique molecular structure - the combination of silicon oxygen bond main chain and ethyl side chain. In the industrial field, it is widely used as a release agent, insulating oil, and damping fluid: for example, in the manufacturing of automotive tires, ethyl silicone oil release agent can reduce mold wear and improve production efficiency; In power equipment, its dielectric strength reaches 20kV/mm, which can effectively isolate high-voltage components.
Compared with dimethyl silicone oil, the ethyl side chain of ethyl silicone oil enhances intermolecular forces, resulting in higher viscosity and stronger shear resistance, but sacrifices some transparency. This feature makes it more suitable for scenarios that require high viscosity lubrication, such as heavy-duty machinery gearboxes. In the future, with the increasing demand for high-temperature resistant lubricating materials in new energy equipment, the market for ethyl silicone oil is expected to expand at a compound annual growth rate of 5%, and the global scale is expected to exceed 1.2 billion US dollars by 2027.
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