Dimethyl silicone oil has a variety of excellent characteristics, due to the small intermolecular interaction force, molecular spiral structure, methyl outward arrangement and free rotation, so it has a series of characteristics, Such as wide range of colorless transparent liquid, viscosity, temperature coefficient and viscosity and large low vapor pressure, high flash point expansion coefficient, high temperature resistant, good low temperature resistance, weather resistance, irradiation, low surface tension, high compression rate, oxygen plasma, high insulation resistance, resistance to shear, thin film deposition, hydrophobic, defoaming, demoulding, high gloss, on materials inert, chemical inertness, non-corrosive and physiological inertia, etc., It is these characteristics that determine its wide use.It is widely used in electrical insulation, demoulding, defoaming, damping, shockproof, rolling, dustproof, waterproof, wetting and other aspects.

　　1、in the mechanical and electrical industry application: dimethyl silicone oil is widely used in motor, electrical appliances, electronic instruments as temperature resistance, arc corona, corrosion resistance, moisture-proof, dustproof insulating medium, is also used as transformers, capacitors, TV scanning transformer impregnation agent.In all kinds of precision machinery, instruments and meters, used as liquid shock proof, damping material.The damping performance of dimethyl silicone oil is little affected by temperature. It is mainly used in the occasions of strong mechanical vibration and large change of ambient temperature. It is used in the instruments of aircraft and automobiles.Used for shock, damping, stable instrument reading, also as a liquid spring, used in aircraft landing gear.

　　2、 for defoaming agent: Because of dimethyl silicone oil surface tension is small, and insoluble in water, animal and plant oil and high boiling point in the mineral oil, good chemical stability, and non-toxic, used as a defoaming agent Has been widely used in petroleum, chemical, medical, pharmaceutical, food processing, textile, printing and dyeing, paper making industries, as long as add 10 x10-6 ~ 10 x10 - silicone oil will have a good defoaming agent.

　　3、 as release agent: because of the non-viscosity of dimethyl silicone oil and rubber, plastic, metal, etc., it is also used as a release agent for all kinds of rubber and plastic products processing, and used for precision casting.Using it as a demoulding agent is not only convenient to demoulding, but also makes the surface of products clean, smooth and clear texture.

　　4、for insulation, dustproof, mildew resistant coating: in glass, ceramic surface dip coated with a layer of dimethyl silicone oil, and heat treatment in 250~300~C, can form a semi-permanent waterproof, mildew resistant and insulating film.With the treatment of insulating devices, can improve the insulation performance of devices: with the treatment of optical instruments, can prevent lens, prism mildew;It can prolong the shelf life of the drug without causing the loss of the preparation due to sticking to the wall.Use it to treat the surface of film, can lubricate, reduce friction, prolong the life of film.

　　5、 as lubricant: dimethyl silicone oil is suitable for rubber, plastic bearings, gear lubricants.It can also be used as a lubricant for rolling friction of steel at high temperature, or friction between steel and other metals. However, because the lubrication performance of methyl silicone oil is not particularly good at room temperature, it is generally not recommended as a lubricant for metals at room temperature.

　　6、 as additives: Dimethyl silicone oil can make many material additives, such as whitening agent can be used as paint, add a small amount of silicone oil into the paint, can make the paint film without package, not wrinkle increase the brightness, add a small amount of silicone oil into the ink, can improve the quality of printing, add a small amount of silicone oil polishing oils (such as car glazing oil), can increase the brightness, protective film, and has a good waterproof effect.

　　7、Application in medical and health care: dimethyl silicone oil has no toxicity to human body and is not decomposed by body fluids, so it is widely used in medical and health care.Taking advantage of its defoaming effect, the oral gastrointestinal defoaming tablet and pulmonary edema defoaming aerosol were prepared.Adding silicone oil into the ointment can improve the penetration of drugs to the skin and improve the efficacy.Some plasters based on silicone oil have a very good effect on burns, dermatitis, bedsores, etc. Using the anticoagulant effect of silicone oil, it can be used to treat the surface of blood storage device, prolong the storage time of blood samples, etc.

　　8、Other aspects: Dimethyl silicone oil has many uses in other aspects.Such as: the use of its high flash point, odorless, colorless, transparent and non-toxic to human body and other characteristics, in steel, glass, ceramics and other industries and scientific research, as the heat carrier in the oil bath or thermostat.With its good shear resistance, it can be used as hydraulic oil, especially aviation hydraulic oil.The static electricity can be eliminated and the quality of drawing can be improved by treating the spinning head of rayon.Adding silicone oil to cosmetics can improve the moisturizing and protective effect on the skin and so on.