Silicone oil according to the chemical structure, including ethyl silicone oil, phenyl methyl silicone oil, silicone oil, methyl hydrogen silicone oil, dimethyl silicone oil, silicone oil methyl benzene group and methyl ethoxy silicone oil, methyl propyl three fluorine silicone oil, methyl vinyl silicone oil, methyl hydroxy silicone oil, ethyl silicone oil containing hydrogen and hydroxyl silicone oil containing hydrogen and cyanide silicone oil, etc.










From the purpose, there are damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulation oil, heat transfer oil, brake oil, and so on.










From the processing status can be divided into primary products and secondary products. The former refers to the silicon oil products before processing, including hydroxyl silicon oil, silicon functional silicon oil, carbon functional silicon oil and inactive modified silicon oil four categories. Traditionally, the first two types are called linear silicone oil, the last two types are called modified silicone oil; The latter is silicone oil as raw material, with thickener, surfactant, solvent and additives, and after the specific process into the products such as lipids, emulsions and solutions, such as silicone grease, silicone cream, defoaming agent, release agent and isolation agent.










Silicone oil is often used not alone, but in an effective way through a special formula; Not as a raw material, but as an auxiliary material for some purpose. Generally speaking, there are three basic forms of silicone oil on the market: pure silicone oil, solution and emulsion.










100% pure silicone oil. Pure silicone oil is very stable, heat resistant, frost resistant, good storage, high flash point and high ignition point, storage and transportation problems are few.










Solution. In practice, silicone oil solutions often need to be diluted, and it is not convenient for users to configure their own solutions. When used, it is sometimes desirable to add active auxiliaries (catalysts, crosslinking agents, etc.) to the solution for storage and use. Aliphatic group, aromatic group or chlorinated hydrocarbon can be used as solvent. Other solvents should be used in special cases. Polymer polysiloxane solution, the concentration can only 35%, otherwise the viscosity is too large.










The emulsion. A large part of silicone oil or silicone oil products are made of emulsion form, it and solvent silicone oil comparison, with cheap, not easy to burn, harmless to health and other advantages. Unlike solvent emulsions, all silicone emulsions are "oil-in-water" (O/W) heterogeneous systems, and the external closed phase is water phase. The silicone oil is dispersed in the water phase in very small drops and is easily diluted with water to the required concentration for application. The stability of the emulsion can be achieved by making the droplets as small as possible and the stabilizing effect of the emulsifier.