At present, silicone oil is mainly used as high-grade lubricating oil, anti-vibration oil, insulating oil, defoaming agent, mold release agent, polishing agent, release agent and vacuum diffusion pump oil; emulsion can be used for car tire glazing, instrument panel light, etc. . Different countries have different national conditions, and the consumption structure of silicone oil emulsions is very different. The consumption structure of Europe and the United States is given below.
1. Daily chemical industry:


Silicone emulsions are widely used in cosmetics. Adding appropriate amount of products can make cosmetics have the advantages of lubrication, anti-sunlight and ultraviolet radiation, good gas permeability, etc. At the same time, due to the hydrophobic properties of silicone oil, it can improve the waterproof and sweat resistance of cosmetics.


2. Textile industry:


Silicone oil can be used as a softener, lubricant, waterproofing agent, finishing agent, etc. for fabrics in the textile and apparel industry. In order to meet the high-end needs of textiles, chemical products manufacturers are also constantly developing silicone oils that can be used together with various functional additives such as water repellents, flame retardants, antistatic agents, and fixing agents. In addition, in order to improve the performance of the fabric, there is also a silicone product which can be used in the same bath as the dyeing, a silicone oil which has a cool feeling, a silicone product which can improve the fabric feel, and an excellent deepening effect and storage stability of the fabric. Good, does not affect the color fastness, feel good silicone deepening agent.


In addition to the functionalization of textiles as an additive in textiles, silicone products will also be applied to other areas of textiles, such as the combination of silicone and polyurethane to form a coating of fabric; the polymerization of silicone and acrylic to form a fabric; organic Silicon is combined with organic fluorine to form a water-repellent coating on the surface of the fabric.
3, machinery


Damping damping: Silicone oil is widely used in motors, electrical appliances, electronic instruments as insulation medium for temperature, arc corrosion, corrosion resistance, moisture and dust, and is currently used as a scanning transformer for transformers, capacitors, and televisions. Agents, etc. Used as a liquid shockproof and damping material in various precision machinery, instruments and instruments. Since the vibration damping performance of silicone oil is less affected by temperature, it is often used in the case of strong mechanical vibration and large changes in ambient temperature, such as aircraft and automobile instruments. It is used for shockproof, damping, and stable meter readings. It can also be used as a liquid spring and in the landing gear of an aircraft.


Thermal conductivity: Thermal grease is the most widely used heat transfer medium. It is a kind of ester formed by using silicone oil as raw material and adding thickener and other fillers after heating, decompression, grinding and other processes. The substance has a certain consistency and no obvious graininess. Thermal grease has a working temperature of -50 ° C to 180 ° C. It has good thermal conductivity, high temperature resistance, aging resistance and water resistance. During the heat dissipation process of the device, after heating to a certain state, the thermal grease exhibits a semi-liquid state, fully filling the gap between the CPU and the heat sink, so that the two are more closely coupled, thereby enhancing heat conduction. Under normal circumstances, thermal grease is insoluble in water, is not easily oxidized, and has certain lubricity and electrical insulation. Like thermal grease, thermal silica gel is also made from silicone oil and chemically processed. However, unlike thermal grease, there is some kind of viscous material in the chemical raw materials it adds, so the finished thermal silica gel has a certain adhesive force. The most important feature of thermal silica gel is that it has a hard texture after solidification and its thermal conductivity is slightly lower than that of thermal grease.
Cutting fluid: Silicone oil is added to the cutting fluid for lubrication and defoaming.


Demolding: Because it is not sticky with rubber, plastic, metal, etc., silicone oil can be widely used as a release agent for various rubber and plastic products. It has the advantages of easy demoulding and clean, smooth and clear texture.
4. Medical and food industries


The commonly used medical silicone oil is mostly polydimethylsiloxane. With its defoaming property, it can be used as an anti-dwelling tablet for treating abdominal distension and an aerosol for treating pulmonary edema. It can also be used as an anti-intestinal adhesion prevention in abdominal surgery. Adhesive, used as a gastric defoamer and a lubricant for some medical surgical instruments in gastroscopy.


Silicone oil can also be used as a silicone defoamer for the food industry. The silicone resin for food is used in its emulsified products. Others can be directly used in oil type. Such defoaming occasions include fermentation and sugar production. And other food production process to suppress foam.


Silicone grease is a silicone grease that is thickened with an inorganic thickening agent and is made of a variety of additives such as anti-oxidation and anti-corrosion. Food grade silicone grease designed for sealing and lubrication of food processing equipment. It does not contain any toxic substances and heavy metals and is absolutely safe for food.


Silicone paper is a commonly used wrapping paper with a three-layer structure, a first layer of backing paper, a second layer of laminating film, and a third layer of silicone oil. Because silicone paper has the characteristics of high temperature resistance, moisture resistance and oil resistance, it is generally used for packaging in the food industry.
5, surface treatment


It is mainly used for waterproofing and antifouling of glass fiber materials, and has excellent waterproof performance. After the building materials are treated with silicone oil, they can improve their wind erosion resistance and water repellency. By incorporating 0.1% to 0.15% (mass fraction) or a higher solids silicone oil emulsion into the mortar, the above characteristics can be exhibited, and the ease of mortar and fluidity can be improved. Asbestos, cement, gypsum board, etc. can also be treated with silicone oil.


6, defoamer


Silicone oils are widely used in the field of defoamers.
In the various stages of textile printing and dyeing, as a defoaming agent in the above-mentioned slurry, desizing refining, bleaching and dyeing; in the petrochemical industry, drilling, oil and gas separation, demulsification, refining section, and the use of lubricating oil and cutting fluid Used in the paper industry as well as in coating inks; silicone defoamers in the detergent industry; and silicone defoamers used in the food industry mentioned above.
7, other applications
In addition, silicone oil can also be used as various additives for silicone rubber, paint leveling agents, antistatic agents, surfactants, etc., and is widely used in various fields of daily life and industrial manufacturing.
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