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Dimethyl Silicone Oil: A Comprehensive Analysis of Its Applications and Properties
Source:iotachem.com
PostTime:2025-01-10 16:16:18



Dimethyl silicone oil, chemically known as polydimethylsiloxane, is a colorless and transparent polymer synthetic material widely used in various fields. It has a broad range of viscosities, from 5 cps to 2 million cps, allowing it to exhibit different forms, from flowing liquids to thick semi-solid states. Its key characteristics include excellent smoothness, softness, water-repellent properties, as well as good chemical stability, electrical insulation, and resistance to both high and low temperatures.

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This material has a high flash point and low freezing point, making it suitable for long-term use within a temperature range of -50°C to +200°C. Additionally, it has a low viscosity-temperature coefficient, high compressibility, low surface tension, excellent water-repellent and moisture-proof properties, and a relatively low thermal conductivity.



Dimethyl silicone oil is commonly used in a wide range of industries, depending on the application requirements. For instance, in cosmetics, it provides a silky, smooth texture to skincare products, body washes, and shampoos. In the production of rubber, plastics, and latex, it is used as a mold release agent, isolating agent, and polishing agent to enhance product quality. Furthermore, it is widely applied in the mechanical, automotive, and electronics industries as a lubricant, shock absorber oil, and transformer oil, offering efficient lubrication and vibration damping.

In the textile industry, it serves as a softener and tactile improvement agent, enhancing the feel and water-repellent properties of fabrics. In the chemical and building materials industries, dimethyl silicone oil is also used as an antifoaming agent and lubricant.


When using dimethyl silicone oil, it is important to avoid contact with concentrated strong acids or strong bases, as these substances can cause the silicone oil to degrade and volatilize, especially at high temperatures. Additionally, low concentrations of acids or bases, when exposed to prolonged high temperatures, may lead to increased viscosity and even cross-linking reactions, so careful attention should be paid to the operating environment.

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