Silicone oil emulsion is a dispersion system composed of silicone oil, water, surfactants and other components with specific properties. It is an ideal choice for surface treatment applications.
Structure and Composition
The core component of silicone oil emulsion is silicone oil, which belongs to the poly siloxane family. Its main chain is composed of silicon-oxygen bonds (Si-O-Si), and the silicon atoms are connected with organic groups, commonly including methyl, phenyl, etc. This unique structure endows silicone oil with many excellent properties, such as low surface tension, good thermal stability, chemical inertness, etc. In the emulsion system, silicone oil is uniformly dispersed in the continuous water phase in the form of tiny droplets, while surfactants adsorb on the surface of the silicone oil droplets, playing a key role in reducing interfacial tension and stabilizing the emulsion structure. Depending on the structure of silicone oil molecules and the type of surfactants, silicone oil emulsions can be classified into various types, such as hydroxyl silicone oil emulsion, amino silicone oil emulsion, polyether-modified silicone oil emulsion, etc. Different types of emulsions have their own unique properties due to the differences in component composition. 
Characteristics
Silicone oil emulsion is an insoluble organic silicone that is uniformly dispersed in water through the aid of surfactants. Depending on the type of emulsifier system used, silicone emulsions can be mainly classified into three categories: anionic type, cationic type, and nonionic type. Most emulsions initially are of the nonionic type. Since they can be compatible with either of the other two systems, cationic or anionic emulsions can be used as supplements for different applications. 
Different polymers can be utilized to alter the viscosity of these organic silicone emulsions, thereby changing their physical properties. High-solid-content emulsions can be provided in concentrated form and diluted with water before use, which helps to enhance the cost-effectiveness of transportation and reduce storage requirements. 
The most common form of silicone oil emulsion is water-based emulsion. It can also be further diluted with water to evenly distribute a small amount of substance on the substrate. 
Function
Silicone oil emulsion can be used as a demolding agent and lubricant in the processing of rubber and plastics. 
Used as a demolding agent in the processing of food trays and plastic plates and dishes; 
Used for car polish and household cleaners, to enhance protection performance, resistance, glossiness and spreadability; 
Used for textile finishing to enhance the feel, improve water resistance, and reduce the need for ironing; 
Used for perlite, vermiculite, clay and other building materials to enhance waterproofing and moisture resistance; 
It is used as a lubricant and anti-static agent in printing and papermaking.