What is a synthetic lubricating oil

    Synthetic oil refers to the preparation of chemical methods and additive compounds, it can be used as lubricating oil, it includes the synthesis of esters, poly alpha olefin (PAO), polyether oil and so on, its composition is different from petroleum hydrocarbon oil;And semi synthetic oil is made of synthetic oil and mineral oil mixed in certain proportion of lubricating oil.

    The use of synthetic oil has a unique performance, can satisfy the general mineral oil cannot meet the requirements, such as can be used for high temperature, low temperature, vacuum and radiation, flameproof and other environmental conditions, and contact with rubber and plastic components are occasions, especially in military industry, aerospace, atomic energy and other fields of cutting-edge technology, synthetic oil become indispensable lubricants.

Advantages compared to mineral oil,

1, Good low temperature performance of synthetic oils are generally the pour point lower than -40 ℃, can work in the following Diester -60 ℃, oxalic acid diester can work at -70 ℃ under.

2, Good high temperature performance due to the molecular structure of the synthetic oil relatively regular, small evaporation loss and has good thermal stability and oxidation stability suitable for working under high temperature.Such as synthetic hydrocarbon oil, esters, silicone oil in 175 ~ 230 ℃ and 230 ~ 175 ℃, the long-term work within 220 ~ 275 ℃.

3, Good viscosity-temperature characteristic most synthetic oil of high viscosity index, in more than 145, and but high viscosity at low temperature, high temperature but low viscosity, thus to adapt to the temperature range is very wide, such as silicone oil can be long-term work within 60 ~ 275 ℃.

4, A lot of good fire resistance Good anti-flammable synthetic oil, water glycol, a liquid ignition point is 650 ℃, phosphate reached 700 ℃, perfluorinated ether in pure oxygen does not burn.

5, Good chemical stability of some synthetic oil thermal stability and oxidation stability and hydrolytic stability is better than that of mineral oil, QuanFuYou and strong acid, strong alkali, etc.Alkyl benzene good radiation resistance, resistant to a variety of radiation exposure.

Because synthetic source material of your side, the synthesis process is relatively complex, high investment, and synthetic abrasion resistance, lubricity better than mineral oil, it has a high value, so synthetic and semi-synthetic oil cost mineral oil is relatively much higher.