A brief discussion on the functions and principles of emulsified silicone oil
Source:REPRINT Author:QL CHEMICAL Release time:2024-04-02 17:39 Reading times:26

Silicone emulsion (silicon emulsion for short) is an oil-in-water emulsion composed of silicone oil, water and surfactants.
Silicone emulsion is mainly used as a silicone fabric softening agent. The first generation of silicone fabric finishes were mechanical mixtures of dimethicone and hydrosilicone (and their derivatives). The second generation of silicone fabric finishing agent is hydroxyl-terminated polydimethylsiloxane emulsion, which is emulsified from octamethylcyclotetrasiloxane monomer, water, emulsifier, catalyst and other raw materials under certain conditions. aggregated. Since polymerization and emulsification are completed in one step, it has the advantages of short working hours, high work efficiency, simple equipment, and easy operation. The obtained emulsion is very stable, the particles are very uniform, and the prepared polymer has active groups (hydroxyl groups) at both ends. ) can further react to form a film, which is beneficial to improving the application effect of the emulsion, which is beyond the reach of mechanical emulsified silicone oil.

1. Function of silicone oil emulsion:
Silicone oil emulsion is a commonly used chemical product with a variety of functions and applications. The following are the main functions of silicone oil emulsion:
1. Lubricant: Silicone oil emulsion can form a lubricating film on the friction surface, reducing friction and wear, and improving the working efficiency and life of mechanical equipment.
2. Anti-adhesion agent: Silicone oil emulsion can reduce the adhesion of the material surface, prevent materials, particles or adhesives from adhering to equipment or tools, and facilitate subsequent processing.
3. Preservative: Silicone oil emulsion can form a protective film to prevent oxidation and corrosion of metal surfaces, extending the service life of equipment and parts.
4. Insulating agent: Silicone oil emulsion has good insulating properties and can be used in electronic equipment, wires and cables, and insulating materials to prevent current leakage and failure.
5. Skin care products: Silicone oil emulsion is widely used in skin care products. It can form a protective film to keep the skin moist and smooth, and prevent water evaporation and external stimulation.
6. Surface treatment agent: Silicone oil emulsion can be used for surface treatment to provide a smooth and bright appearance and increase the gloss and visual effect of the material.

2. Principle of silicone oil emulsion:
The principle of silicone oil emulsion is based on emulsification technology. By combining silicone oil with appropriate emulsifiers, it can be miscible with water and form a milky liquid. The following are the principle steps of silicone oil emulsion:
1. Emulsifier selection: Choosing a suitable emulsifier is a key step. Common emulsifiers include surfactants, surfactants or colloidal substances, which have hydrophilic and hydrophobic parts that can reduce the surface tension between liquids and promote the emulsification process.
2. Prepare emulsion: Mix silicone oil and emulsifier in a certain proportion, and emulsify through mechanical stirring or ultrasonic treatment, so that the silicone oil is finely dispersed in the water phase to form a milky liquid.
3. Stable emulsion: The function of emulsifier is to reduce the surface tension between liquids and avoid the aggregation and separation of droplets. During the emulsification process, the concentration of the emulsifier and the emulsification time must be controlled to obtain a stable emulsion liquid.
4. Application emulsion: Stable silicone oil emulsion can be directly used in areas that require lubrication, anti-adhesion, anti-corrosion and other functions. Depending on specific needs, different emulsion formulas and concentrations can be selected.

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