Dimethyl silicone oil, as a colorless, tasteless, odorless, non-toxic oily liquid, has a series of excellent physical and chemical properties, such as high flash point, low freezing point, good thermal stability, high and low temperature resistance, etc. It has a wide range of applications, and different concentrations of dimethyl silicone oil have specific applications in different fields. The following is a detailed description of the application of different concentrations of dimethyl silicone oil.

1. Application of low-concentration dimethyl silicone oil (0.6~10cst)
Cosmetics industry
Low-concentration dimethyl silicone oil (usually refers to substances with a molecular weight of 200~1000) is widely used in the cosmetics industry. Due to its low viscosity, light and easy to push, and easy to absorb, it is often used as a moisturizer, sunscreen, thickener, etc. In cosmetics such as sunscreen, isolation cream, face cream, and moisturizer, low-concentration dimethyl silicone oil can effectively protect the skin, improve the consistency and gloss of cosmetics, and will not block the breathing of the skin. In addition, low-concentration dimethyl silicone oil can also be used as a lubricant and foaming agent to improve the use experience of cosmetics.
Textile industry
In the textile industry, low-concentration dimethyl silicone oil can be used as a lubricant for fibers. It can effectively reduce the friction between fibers and improve the softness and smoothness of fabrics. In addition, low-concentration dimethyl silicone oil can also be used as a finishing agent for fabrics to improve the antistatic and wear resistance of fabrics.
Other fields
In addition to the cosmetics and textile industries, low-concentration dimethyl silicone oil can also be used in other fields. For example, in leather processing, it can be used as a softener; in ink manufacturing, it can be used as an additive to improve the fluidity and stability of ink; in the coating industry, it can be used as a leveling agent to improve the coating performance of the coating.

2. Application of medium-concentration dimethyl silicone oil (20~1000cst)

 Lubricating oil and grease
Medium-concentration dimethyl silicone oil (substances with molecular weight of 1000~16000) is widely used in the field of lubricating oil and grease. Due to its chemical stability and high-temperature stability, medium-concentration dimethyl silicone oil can be used as lubricating oil and grease under harsh working conditions such as high temperature, high pressure, and high speed. In the fields of machinery manufacturing and automobile industry, medium-concentration dimethyl silicone oil can effectively reduce the wear and durability of mechanical parts and improve the operating efficiency and service life of equipment.
Insulating materials
Medium-concentration dimethyl silicone oil can also be used as insulating materials in industries such as electrical appliances and electronics. Due to its good electrical insulation properties and high-temperature resistance, medium-concentration dimethyl silicone oil can be used as a heat-resistant, arc-resistant, corrosion-resistant, and moisture-resistant insulating medium. In the fields of high-voltage electrical appliances, transformers, cables, etc., medium-concentration dimethyl silicone oil can effectively protect electrical equipment from damage by electric shock and moisture.
Defoamer raw materials
Dimethyl silicone oil is an important raw material for silicone defoaming, and its common viscosity is 100~1000 viscosity.

3. Application of high-concentration dimethyl silicone oil (2000~1 million cst)
 Polishing agent and mold release agent
High-concentration dimethyl silicone oil (substances with a molecular weight greater than 16,000) is widely used in the field of polishing agents and mold release agents. Due to its high viscosity, high density, high lubricity and other characteristics, high-concentration dimethyl silicone oil can be used as a high-efficiency polishing agent and high-temperature mold release agent. In the molding process of plastics and rubber, high-concentration dimethyl silicone oil can effectively improve the gloss and wear resistance of the product; in metal processing and casting, it can be used as a high-temperature mold release agent to reduce the adhesion and wear of the product.
As shock-absorbing and damping oil
Silicone oil is widely used as a shock-absorbing and damping medium in the machinery manufacturing and instrumentation industries due to its unique viscosity-temperature characteristics, wide viscosity range, excellent thermal stability and high compressibility. As a damping oil for automotive engine cooling fans, dimethyl silicone oil helps improve the efficiency and reliability of the cooling system. According to different vibration force requirements, dimethyl silicone oil with appropriate viscosity is selected as the anti-shock oil for automobile and aircraft instruments to ensure accurate signal output and stable pointer readings.
In addition, high-concentration dimethyl silicone oil can also be used in synthetic resins, oil processing, food manufacturing, fermentation, papermaking and other processes. Due to its low surface tension and good dispersibility, high-concentration dimethyl silicone oil can effectively eliminate the foam and bubbles generated during the process to improve product quality and production efficiency.
4.Conclusion
In summary, dimethyl silicone oil has a wide range of applications in different fields due to its excellent physical and chemical properties. Dimethyl silicone oil of different concentrations plays an important role in cosmetics, textile industry, lubricating oil and grease, insulating materials, polishing agents and release agents, defoaming agents and other fields. With the continuous advancement of science and technology and the continuous development of industry, the application fields of dimethyl silicone oil will become more extensive and diversified.