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The application of dimethyl silicone oil


Dimethylsilicone oil generally refers to polydimethylsiloxane, polydimethylsiloxane, is a kind of hydrophobic silicone materials. In medicine, daily chemicals, food, construction and other fields are used, its derivatives have reached hundreds of kinds, commonly used polysiloxane mainly: polydimethylsiloxane, cyclomethylsiloxane, amino siloxane, polymethylphenyl siloxane, polyether polysiloxane copolymer, etc..

With SI-O-Si as the main chain, the linear dimethylsilicone oil connected to the methyl group on the silicon atom, because of the small intermolecular force, the molecule is helical structure, the methyl group is arranged outward and can rotate freely, so it has a series of characteristics. Such as colorless transparent, small temperature viscosity coefficient, large expansion coefficient, low vapor pressure, high flash point, high and low temperature resistance, low surface tension, high compression rate, inert material, chemical inert, non-corrosion and physiological inert, it is these characteristics determine its broad use.

1. The role of demoulding in rubber, plastic and metal

Dimethylsilicone oil can BE used FOR the demoulding of POLYURETHANE microporous elastomer moulding products, rubber products, ABS moulding products AND so on, because of its non-adhesive property with rubber, rubber AND rubber. The main advantages of the release agent are small release force, no pollution, convenient transportation, and make the surface of the product clean, smooth, clear texture. With the rapid development of polyurethane industry, silicone oil release agent market is expanding.

2. Application of silicone oil in textile industry

Methylsilicone oil is widely used for fiber filament, raw cotton with oil, spinning with oil, sewing thread with smoothing agent. The oil agent used for raw silk and cotton is methylsilicone oil with low viscosity, generally 10 viscosity. The smoothing agent used for sewing thread is methylsilicone oil with medium and high viscosity. Generally, 500 viscosity silicone oil is used. Using THE THERMAL STABILITY AND LOW VISCOSITY AND TEMPERATURE COEFFICIENT OF METHYLSILICONE OIL, WITH ELECTROSTATIC AGENTS, EMULSIFIERS AND OTHER OIL AGENTS MADE OF SPINNING agent, used in nylon, POLY cool spinning process, to prevent the SPINNERet process very fine MONofilaments bundles from the nozzle during the EJECtion and fast winding caused by wire breaking and loose. When melting and preventing wire, the nozzle should also use methylsilicone oil for demoulding treatment to prevent carbide or melt attachment caused by broken wire. In addition to the functionalization of textiles as additives, organosilicon products will also be used in other fields of textiles, such as the combination of organosilicon and polyurethane to form a fabric coating; Organosilicon and acrylic acid polymerization to form fabric printing; The combination of organic silicon and organic fluorine forms a waterproof coating on the surface of the fabric.

3. Application of silicone oil defoamer

Because dimethylsilicone oil surface tension is small, and insoluble in water, good chemical stability, non-toxic, as an defoamer has been widely used in petroleum, chemical, medical, pharmaceutical, food processing, textile, printing and dyeing, paper and other industries. Secondary processing of silicone oil can also produce defoaming agent emulsion for water-based systems.

4. Application of silicone oil in cosmetics

Polydimethylsiloxane can be used as silicon oxygen surfactant, colorless, tasteless, non-irritating, non-volatile thin to viscous fluid. Has the following good characteristics: ① good lubrication performance; (2) good gloss; ③ Good antistatic performance; ④ It has the effect of slow release and fixed fragrance on essence and fragrance.

5. Application of silicone oil in electromechanical industry

Widely used in motors, electrical appliances, electronic instruments as temperature resistance, arc corona resistance, corrosion resistance, moisture-proof, dustproof insulation medium, currently also used as transformers, capacitors, television scanning transformer impregnation agent. In a variety of precision machinery, instruments and meters, used as liquid shock – proof, damping materials. The damping performance of 201 methylsilicone oil is little affected by temperature, and it is mostly used in the situations with strong mechanical vibration and large environmental temperature changes. It is used in the instruments of aircraft and automobiles.

6. Application in coatings

It can be used as a additive of many materials, such as paint brightening agent, add a small amount of silicone oil to the paint, can make the paint does not float, wrinkle-free, improve the brightness of the film; Adding a small amount of silicone oil to the ink can improve the quality of printing; Add a small amount of silicone oil to the polishing oil (such as car polish oil), can increase brightness, protect the paint film, and have excellent wa

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