Silicone oil usually refers to a linear polysiloxane product that remains in a liquid state at room temperature, and is generally a colorless (or light yellow), odorless, non-toxic, and non-volatile liquid. Their molecular weights are not high, and they are in a flowing state at normal temperature, so they are usually called silicone oil. It is generally not simply used, but is made by a special formula, often used as an auxiliary material to produce a certain effect.
Generally speaking, there are three basic forms of silicone oil on the market: pure silicone oil, solution, emulsion.
1. Pure silicone oil has very strong stability
Heat resistance, frost resistance, good storage, high flash point and high fire point, few storage and transportation problems.
2. In fact, it is often necessary to dilute the silicone oil solution
Sometimes it is desirable to add active auxiliary agents (catalysts, cross-linking agents, etc.) to the solution for storage and use. Aliphatic, aromatic, or chlorinated hydrocarbons can be used as solvents, and other types of solvents are used in special cases. Generally, the concentration of polymer polysiloxane solution can only reach 35%, otherwise the viscosity is too high.
3. A large part of silicone oil or products containing silicone oil are made into emulsion form
Compared with solvent silicone oil, it has the advantages of low price, non-flammability, and no harm to health. Unlike the solvent type, all silicone emulsions are "oil-in-water" heterogeneous systems. Its external closed phase is the water phase. The silicone oil is dispersed in the water phase with very fine droplets, which is easy to dilute to the required concentration with water For application, the stability of this emulsion can be achieved by making the droplets as thin as possible and the stabilizing effect of the emulsifier.