Silicone oil


Silicone oil is a polyorganosiloxane of different degree of polymerization chain structure.


Silicone chemical formula
The most commonly used silicone oil is methyl silicone oil.


1 silicone oil characteristics


Generally colorless (or light yellow), odorless, non-toxic, non-volatile liquid;
Silicone oil is insoluble in water, methanol, glycol and - ethoxyethanol. It is miscible with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene. It is slightly soluble in acetone, dioxane, ethanol and alcohol. ;
Has a small vapor pressure, a high flash point and ignition point, a low freezing point;
As the number of segments n is different, the molecular weight is increased and the viscosity is also increased, so that the silicone oil can have various viscosities;
Excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertness and low surface tension;
Low viscosity temperature coefficient, high compression resistance) Some varieties also have radiation resistance;


2 silicone oil types
According to chemical structure
Methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl Silicone oil, methyl hydroxy silicone oil, ethyl hydrogen silicone oil, hydroxyl hydrogen silicone oil, cyanide containing silicone oil, etc.;


Divided by purpose
Damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulating oil, heat transfer oil, brake oil, etc.;
Silicone emulsion (a form of silicone oil) mainly contains silicone oil fabric soft finishing agent; silicone oil emulsion type defoaming agent: it is the most widely used and defoaming agent in silicone defoaming agent.