Dimethyl Silicone Oil: Properties and Applications

Dimethyl silicone oil (also known as polydimethylsiloxane) is a polymer with a siloxane bond as the main chain and methyl groups as the side chains. Due to its special molecular structure, it possesses a series of practical properties and is widely used in various fields.

   

• Strong stability: The siloxane bond structure enables it to resist high temperatures (stable use from -50℃ to 200℃) and oxidation, with little change in performance when exposed to air or outdoor environments for a long time.
• Adjustable viscosity: It ranges from low viscosity close to that of water (0.65 cSt) to high viscosity similar to gel (1,000,000 cSt), which can be selected according to needs.
• Excellent surface activity: It has low surface tension, can defoam and lubricate, and can form a hydrophobic protective film, with both waterproof and anti-sticking functions.
• High safety: It has strong chemical inertness and good compatibility with the human body. Pharmaceutical-grade products meet safety standards and can be used in cosmetics, pharmaceuticals and other fields.

   

• Industrial field: Used as a defoamer in fermentation and sewage treatment; high-viscosity types are used as high-temperature lubricants and release agents to improve production efficiency.
• Daily chemical products: It adds a smooth feeling to skin care products, reduces frizz in hair care products, and helps makeup spread evenly and prolongs makeup hold in cosmetics.
• Medical and electronic fields: It assists in defoaming during gastroscopy and serves as an ointment base; in electronic equipment, it plays a role in insulation and heat dissipation to protect precision components.