The recycled base oil SN 150 is a type of oil used as a base for lubricants. The main element of lubricants (volume-wise) is base oil and it forms about 95% of the lubricant’s weight. In some lubricants (Compressor and hydraulic oil) 99% of the oil has consisted of base oil and only 1% which is left contains additives. Base oils can be reached from oil-based and non-oil based resources. Most of the base oils used in the world are obtained from crude oil refining. Most of the compounds which form base oils are Paraffinic, Naphthenic and aromatic compounds.
Base oil’s chemical properties and their impact on the usage of final lubricant:
Volatility: reduction of the oil, oil thickening, sediments
Surface Activity: foaming, pressure tolerance, air release, emulsion expansion
Oxidations: sediments, oil thickening, metal oxidation, mud forming
Viscosity: Fluidity in lower degrees, energy waste, abrasion protection, proper cooling
Being soluble: Motor neatness, sealant compatibility, process applications, formulation sustainability
The base oil which is extracted from crude oil is called mineral base oil which is categorized into two types (Paraphinic and Naphtshic).
Paraphinic oils have consisted of normal hydrocarbons and Iso hydrocarbons.
Naphthic oils consist of annular full hydrocarbons.
Paraphinic oils have certain attributes in comparison with naphthic oils such as:
More shedding temperature
Less special weight
More viscosity indicators
Less solubility property
Higher resistance against oxidation
Higher flashpoint
Mainly naphthic oils are needed for less temperature criteria and pour point specially; hydraulic oils, coolers, rubber producing oils, metalworking and cylinders’ lubricants for big motors and greases.