At present, silicone oil is mainly used as advanced lubricating oil, anti-vibration oil, insulating oil, defoaming agent, mold release agent, polishing agent, release agent and vacuum diffusion pump oil; the emulsion can be used for glazing of automobile tires, glazing of dashboards, etc. . Different countries have different national conditions, and the consumption structure of silicone oil emulsion is very different.

1. Daily chemical industry:

Silicone emulsions are widely used in cosmetics. Adding an appropriate amount of products can make cosmetics have the advantages of lubrication, resistance to sunlight and ultraviolet radiation, and good air permeability. 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 fabric softener, lubricant, waterproofing agent, finishing agent and so on in the textile and garment industry. In order to meet the high-end demand for textiles, chemical product manufacturers are also constantly developing silicone oils that can be used together with various functional additives such as waterproofing agents, flame retardants, antistatic agents, and color-fixing agents. In addition, in order to improve the performance of the fabric, there are also silicone products that can be used in the same bath with dyeing, silicone oil for cotton with a cool feeling, silicone products that can improve the fabric feel, and can give fabrics excellent darkening effect and storage stability Good, does not affect color fastness, good hand feel, such as silicone-based deepening agent.

In addition to the functionalization of textiles as additives in textiles, silicone products will also be applied to other fields in textiles, such as the combination of silicone and polyurethane to form the coating of the fabric; the polymerization of silicone and acrylic to form the printing of the fabric; The combination of silicon and organic fluorine forms a waterproof coating on the surface of the fabric, etc.

3. Machinery

Damping and shock absorption: Silicone oil is widely used in motors, electrical appliances and electronic instruments as an insulating medium for temperature resistance, arc corona resistance, corrosion resistance, moisture resistance and dust resistance. agent, etc. It is used as liquid shockproof and damping material in various precision machinery, instruments and meters. Since the shock absorption performance of silicone oil is less affected by temperature, it is mostly used in instruments such as aircraft and automobile instruments in occasions with strong mechanical vibration and large changes in ambient temperature. For shock resistance, damping, stabilizing instrument readings, and also as a liquid spring, and in aircraft landing gear.

Thermal conductivity: thermally conductive silicone grease is the most widely used thermal conductivity medium at present. It is an ester formed by adding silicone oil as raw material and adding fillers such as thickeners after heating, decompression, grinding and other processes. The substance has a certain viscosity and no obvious graininess. The working temperature of thermal grease is generally -50 ℃ ~ 180 ℃, it has good thermal conductivity, high temperature resistance, aging resistance and waterproof properties. During the heat dissipation process of the device, after heating to a certain state, the thermal grease will appear in a semi-fluid state, fully filling the gap between the CPU and the heat sink, making the two more closely bonded, thereby enhancing heat conduction. Under normal circumstances, thermal grease is insoluble in water, not easy to be oxidized, and has certain lubricity and electrical insulation. Like thermal grease, thermal silicone is also made of silicone oil with certain chemical raw materials added and chemically processed. However, unlike thermal grease, there is a certain viscous substance in the chemical raw material it adds, so the finished thermal silicone has a certain adhesive force. The biggest feature of thermally conductive silicone is that it has a hard texture after solidification, and its thermal conductivity is slightly lower than that of thermally conductive silicone grease.

Demoulding: Since it is not sticky to rubber, plastics, metals, etc., silicone oil can be widely used as a release agent for the molding of various rubber and plastic products.

4. Medical and food industries

The most commonly used medical silicone oil is polydimethylsiloxane, and its defoaming properties can be used to make anti-bloating tablets for abdominal distension and aerosol for treating pulmonary edema, and can also be used as a preventive against intestinal adhesion in abdominal surgery. Adhesive, used as a gastric defoamer in gastroscopy and as a lubricant for some medical surgical instruments.

Silicone oil can also be used as a silicone antifoaming agent for food industry, the product of polysiloxane resin for food after emulsification, and other products that can be directly used in oil. Such defoaming occasions include fermentation and sugar making, And other food production process to suppress foam.

Silicone grease is a kind of silicone grease refined by inorganic thickener thickening food grade silicone oil and adding various additives such as anti-oxidation and anti-corrosion. Food grade silicone grease designed for sealing lubrication of food processing equipment. Does not contain any toxic substances and heavy metals, absolutely safe for food.

Silicone oil paper is a commonly used wrapping paper with a three-layer structure, the first layer of base paper, the second layer of lamination, and the third layer of silicone oil. Because silicone oil 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 waterproof and anti-fouling of glass fiber materials, and has excellent waterproof performance. After the building material is treated with silicone oil, its weather resistance and hydrophobicity can be improved. Incorporating 0.1% to 0.15% (mass fraction) or a silicone oil emulsion with a higher solid content in the mortar can display the above characteristics and improve the ease and fluidity of the mortar. Asbestos, cement, gypsum board, etc. can also be treated with silicone oil.

6. Defoamer

Silicone oils are widely used in the field of defoaming agents.

It is used as a defoamer in various process sections of textile printing and dyeing, such as sizing, desizing refining, bleaching and dyeing; in the petrochemical industry, it is used in drilling, oil and gas separation, demulsification, and oil refining, as well as in lubricating oil and cutting fluid. ; Used in the paper industry and coating inks; Silicone defoamers used in the detergent industry; and the aforementioned silicone defoamers used in the food industry.

7. Other applications

In addition, silicone oil can also be used as various additives for silicone rubber, coating leveling agent, antistatic agent, surfactant, etc., and is widely used in many fields of daily life and industrial manufacturing.