Introduction of naphthenic oil

Introduction of naphthenic oil

Text/Mite Polymer Nova

Naphthenic oil is a naphthenic substance from natural mineral oil. It is a saturated hydrocarbon and a hydrocarbon with a ring structure. Since its components are a mixture, there is no single molecular formula. It consists of one or more saturated rings. carbon chain is main body, and several branched chains are attached to it.

Naphthenic oil belongs to category of process oils (process oil, diluent oil) and is a petroleum fraction, main component of which is naphthene. Relative density 0.89~0.95g/cm3, flash point>160℃, acid number<0.1mgKOH/g, aniline point 66~82℃, pour point -40~-12℃. Store in a cool ventilated warehouse, away from fire and heat sources.

Naphthenic oil has a saturated ring carbon chain structure, low pour point, high density, high viscosity, no toxic side effects, etc., and its ring is usually associated with saturated branched chains. Because of this structure, naphthenic oil not only has some of properties of aromatic hydrocarbons, but also has some of properties of straight chain hydrocarbons, and since naphthenic oil is obtained from natural oil, it has advantages of low price and reliable source, which determines quality of naphthenic oil, which may have special applications in many areas.

Introduction of naphthenic oil

Naphthenic oil is extracted from naphthenic crude oil. The world's naphthenic crude oil resources are mainly concentrated in four locations, namely Texas, California in US, Venezuela and Venezuela in South America. Xinjiang oil field in China, Liaohe oil field, Dagan oil field and Bohai Bay and other regions. The amount of dilute naphthenic crude oil in Texas and California in United States gradually decreased and heavy naphthenic crude oil production began. A large amount of Venezuelan heavy naphthenic oil is currently being produced, and cost of extraction is getting higher and higher.

All naphthenic oils that we can currently obtain are obtained from natural mineral oil - naphthenic crude oil, and only some naphthenes are obtained by artificial synthesis, for example, cyclohexane from product of hydrogenation and saturation of benzene. However, hydrocarbons such as benzene are derived almost from petroleum, so source of naphthenic oil is processing of special naphthenic crude oil. Naphthenic crude oil is obtained from natural oil, but proportion of naphthenic crude oil in natural oil is relatively small.

Because formation of naphthenic crude oil requires difficult geological conditions, production is low. Crude oil is generally considered to be an ancient form, formed by burial of living organisms in earth and after exposure to pressure, temperature, etc., decomposition, polymerization and other chemical reactions. However, due to different geological conditions, different depths and different forms of oil recovery, properties of crude oil in oil blocks are different. It is roughly divided into three types: paraffin-based crude oil, intermediate-based crude oil, and phthenic-based crude oil.

Introduction of naphthenic oil

For naphthenic crude oil, this is usually due to fact that underground crude oil has a long history of formation and coincides with changes in geological conditions, oil layer gradually rises to a position closer to ground, because it has ability to interact with water, contact with oxygen, microorganisms, etc., so that unstable components in crude oil are gradually oxidized and polymerized, and paraffins are absorbed by microorganisms, and such crude oil forms naphthenic crude oil.

Naphthenic oil is an ideal raw material for making rubber oil. It is well compatible with rubber. Therefore, naphthenic oil is added to rubber to improve elasticity, flexibility, workability and lightness of rubber compound, etc. In actual use of rubber oil, due to different objects of rubber oil and different requirements for rubber oil, names of rubber oil are also different.

Recommended reading: How to determine naphthenic oil by pour point, density, viscosity index

Supplementary Information: Key Points and Challenges in Applying Oil to TPE

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