What is silicone oil?

    Silicone oil usually refers to linear polysiloxane products that remain liquid at room temperature and are generally divided into two categories: methylsilicone oil and modified silicone oil.The most commonly used silicone oil a methyl silicone oil, also known as ordinary silicone oil, its organic groups are all methyl, methyl silicone oil has good chemical stability, insulation, good hydrophobic performance.It is made of dimethyl dichlorosilane hydrolyzed by initial polycondensation ring, ring by cracking, distillation to produce low ring, and then the ring, head agent, catalyst together polymerization can be obtained a variety of different degrees of polymerization mixture, by reducing pressure distillation to remove the low boiling content can be made of silicone oil.

    Silicone oil is a kind of non-toxic, tasteless and not easy to evaporate liquid, silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertness and small surface tension, in addition to low viscosity and temperature coefficient, high compression resistance, some varieties also have radiation resistance.Because of these reasons, it is called universal fluid.

    Dimethylsilicone oil has a variety of excellent characteristics, so in industrial and agricultural production departments, national defense industry, scientific research and medical and health departments, have been extremely widely used.It is widely used in demoulding, defoaming, damping, shockproof, rolling, dustproof, waterproof, high and low wetting and so on.

    disadvantages

    (1) the lubricity of silicon oil is not good, especially for steel friction pair.

    (2) the coefficient of thermal expansion of silicon oil is large (may cause overpressure problem).

    (3) High solubility of gas (difficult to design gas seal device).