1.The application of silicone oil in cosmetics polydimethylsiloxane can be used as a silicone surfactant, this product is colorless, tasteless, non-irritating, non-volatile thin to viscous fluid. It has the following good characteristics: ① Good lubrication performance, can form a uniform waterproof protective film after coating the skin, but without any sticky and greasy feeling; ② Good luster. Good resistance to ultraviolet radiation. It will not oxidize under ultraviolet light and cause skin irritation. (3) Good antistatic performance, the test shows that the skin static electricity of the skin containing polysiloxane skin cream is eliminated, and there is a significant dust proof effect of good permeability, even if the formation of siloxane film on the skin does not affect the sweat discharge. ④ It has a slow release and fixed aroma effect on flavors and spices, so the fragrance preservation period is long, high stability, chemically inert, and has no adverse effect on other components of cosmetics, especially the active ingredients.
2.Dimethylsilicone oil is widely used in motors, electrical appliances, electronic instruments as a temperature resistance, arc corona resistance, corrosion resistance, moisture, dust insulation medium, is also used as transformers, capacitors, TV scanning transformer impregnators and so on. In a variety of precision machinery, instruments and meters, used as liquid shock, damping materials. The shock absorption performance of dimethylsilicone oil is little affected by temperature, and it is mostly used in occasions with strong mechanical vibration and large changes in ambient temperature, such as the instruments used in aircraft and automobiles. It is used for shock-proof, damping, stabilizing instrument readings, and can also be used as a liquid spring in aircraft landing devices.
3.The surface tension of silicone oil is very small, and has a unique interface property, adding a small amount of low viscosity dimethyl silicone oil to the paint and ink can effectively reduce its surface tension, improve the coating and expandability, and obtain a uniform coating without orange peel. Compared with traditional coatings, polysiloxane coatings have many excellent properties, so it occupies a very important position in the coating industry, especially in the application of functional coatings will be more and more. Polysiloxane coating has the following characteristics :① excellent light and color retention, high gloss, good decoration, corrosion resistance, excellent chemical resistance, and the physical and mechanical properties of the film are good, the film drying speed is fast, the construction efficiency is high, and the stain resistance is easy to clean; ② The construction does not need to coat the intermediate coating and reduce the number of coating,③ is a high solid coating, low VOC content, no isocyanate, small odor, with safety, health and environmental protection characteristics. Therefore, polysiloxane coatings are used in architectural coatings.
4.Application in medicine Because polysiloxane has the characteristics of non-toxic, tasteless, good biocompatibility, no skin sensitization, physiological inertia, high and low temperature resistance, non-flammable, good gas permeability, unique solution permeability and stable physical and chemical properties, it is widely used in the medical field. Dimethylsilicone oil cream can protect the skin from the effects of acids, bases, salts and various detergents. Silicone oil can be made into a medical defoamer, skin protection agent, can be used to prepare a variety of burns and skin diseases, can also be made into a dental toothpaste containing silicon with anti-caries, anti-allergy dual effects; In addition, polysiloxane has a wide range of applications in the pharmaceutical field.