Dimethyl Silicone Oil: A Multi-Functional Polymer with Unmatched Performance Across Industries
Dimethyl silicone oil, also known as polydimethylsiloxane (PDMS), is a transparent, colorless synthetic polymer widely used across various industries.
It spans a broad viscosity range, from 5 cps to 2 million cps, enabling it to take on forms ranging from fluid liquids to thick, semi-solid states. Key characteristics include exceptional smoothness, softness, water-repellent properties, as well as impressive chemical stability, electrical insulation, and resistance to extreme temperatures. With a high flash point and low freezing point, it can be used in a temperature range of -50°C to +200°C. Additionally, it features a low viscosity-temperature coefficient, high compressibility, low surface tension, and excellent moisture resistance, with a relatively low thermal conductivity.
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Dimethyl silicone oil's versatility makes it indispensable in multiple sectors. In cosmetics, it imparts a silky-smooth texture to skincare products, body washes, and shampoos. In rubber, plastic, and latex manufacturing, it serves as a mold release agent, isolating agent, and polishing agent, enhancing the quality of finished products. It's also widely used in the mechanical, automotive, and electronics industries as a lubricant, shock absorber fluid, and transformer oil, offering high-efficiency lubrication and vibration damping. In the textile sector, it improves fabric feel and water-resistance by acting as a softener and tactile enhancer. Furthermore, in chemical and construction industries, dimethyl silicone oil is applied as an antifoaming agent and lubricant.
When handling dimethyl silicone oil, it is important to avoid contact with concentrated strong acids or bases, as these can cause the oil to degrade or volatilize, especially at high temperatures. Additionally, prolonged exposure to low concentrations of acids or bases at elevated temperatures may result in increased viscosity or even cross-linking, so special attention should be given to the working environment.