The performance of silicone oil-Iota

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News > Dynamic industry > The performance of silicone oil

The performance of silicone oil

Chinese Name: silicone oil

English Name: 硅油

Chinese alias: organic silicone; silicone foam; foam stabilizer; polysiloxane; methyl silicone oil; twomethyl silicone oil; two methyl polysiloxane; two methyl silicone oil.

Alias: Hard foam silicon English (An even vesicant); Hard foam silicon; Methyl silicone oil,Polydimethylsiloxane

The main characteristics

The surface tension of silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and small, anti compression also has low viscosity temperature coefficient, the higher the) some varieties resistant to radiation performance.

Silicone oil has many special properties, such as antioxidant, high flash point, low volatility, non-toxic and non corrosive to metal, etc..

Basic classification

According to the chemical structure is divided into methyl silicone oil, silicone oil, silicone oil, ethylphenyl methyl silicone oil containing hydrogen, methyl phenyl silicone oil, methyl chloride, methylphenyl silicone ethoxy methyl silicone oil, silicone oil, three fluorine propyl methyl vinyl silicone oil,silicone oil, hydroxy methyl ethyl hydrogen silicone oil, hydroxy silicone oil, silicone oil containing hydrogen cyanide etc.;

According to the purpose, a damping silicone oil, silicone oil diffusion pump, hydraulic oil, insulating oil, heat transfer oil, brake oil etc..

The main purpose

Used for advanced lubricating oil, shockproof oil, insulating oil, defoaming agent, release agent,polishing agent and vacuum oil diffusion pump. In all kinds of silicone oil with methyl silicone oil, the most widely used, is the most important oil in varieties, followed by methyl phenyl silicone oil. In addition, there are ethyl methyl phenyl silicone oil, silicone oil, silicone oil containing nitrile. A variety of functional silicone oil and silicone oil is mainly used for special purposes.

The advantages and disadvantages

Advantage

(1) have excellent shear stability, vibration absorption, prevent the propagation of vibration function,can be used as damping fluid.

(2) excellent thermal oxidation stability, such as thermal decomposition temperature of >300 DEG C,evaporation loss (150 C, 30 days, the evaporation loss is only 2%), oxidation test (200 c, 72h),viscosity and acid value of small changes.

(3) excellent electrical insulation resistance, volume does not change in the normal temperature to 130 DEG C (but not in oil and water).

(4) it is a non-toxic and low foam, strong anti foam oil, can be used as defoaming agent etc..

(5) the viscosity temperature performance is the best liquid lubricant in a wide temperature range,small changes in viscosity. It is generally less than the freezing point of 50 DEG C, some as high as70 degrees, long-term storage at low temperature, the oil viscosity, no change in appearance, it is the base oil of high and low temperature, wide temperature range of both.

Shortcomings

(1) surface tension (easy leakage from the machine).

(2) the gas solubility (difficult to design gas seal).

(3) silicone oil large thermal expansion coefficient (possible overpressure problem).

(4) the poor lubricity of silicone oil, especially for the lubrication of the steel steel friction pair.

(5) a moistureabsorption (later, the water content is higher than 100 * 10-6 electrical performance dramatically)

Application field

Silicone oil is a very wide range of applications, it is not only as the use of special materials,sophisticated technology, military aviation technology sector, but also for the various sectors of the national economy, its application scope has been expanded to: building, electronic and electrical,textile, automobile, machinery, chemical industry, papermaking, leather and metal paint, medicaletc..

The main application of silicone oil and its derivatives: remover, damping oil, dielectric oil, hydraulic oil, heat transfer oil, oil diffusion pump, defoaming agent, lubricant, hydrophobic agent, paintadditives, polishes, cosmetics and daily necessities, additives, surfactants, particle and fibertreatment agent, silicone grease, flocculant.

The harm to human body

Silicone oil was used as the female breast prosthesis, silicone oil is used in more than 40 years later, at the beginning of the ninety's, was found may result in decreased immune function or carcinogenic and banned in europe. At that time, USA production company on silica gel prosthesiswas indicted, lost a lot of money. In recent years, with the discovery of why do breast surgery of female cancer is complex, and silicone oil in Europe open, but still banned in America.