Preparation method of lubricating oil detergent

Abstract

The invention discloses lubricating oil detergent and a preparation method thereof. The detergent is prepared from the following raw materials in parts by weight: 1 part of linoleic acid, 1-2 parts of neutral oil, 1-6 parts of calcium hydroxide, 0.2-1 part of calcium oxide, 0-0.1 part of calcium chloride, 3-10 parts of solvent, 0.2-1 part of methanol, 0.1-0.5 part of water and 0.1-0.4 part of carbon dioxide. The preparation method of the lubricating oil detergent comprises the following steps of: a high-alkalinity reaction, a neutralization reaction and the like. The lubricating oil detergent disclosed by the invention has better detergency and dispersibility and strong corrosive acid neutralization capacity, and is uniform in calcium carbonate grain size distribution. In the whole reaction process, the preparation and treatment process is simple, free of a high-temperature treatment process and easy to realize on the device. Moreover, most of the materials are regenerative, higher in biodegradability and capable of satisfying the green and environmentally-friendly requirements.

Description

technical field

[0001] The invention belongs to the field of chemical industry, and in particular relates to a lubricating oil detergent and a preparation method thereof. Background technique

[0002] During the use of the internal combustion engine, some carbon particles and smoke generated by fuel combustion will enter the lubricating oil, and some dust in the air will also enter the oil. At the same time, the high-temperature oxidation of the lubricating oil itself will produce acidic substances. The combination of these substances will form carbon deposits and sludge, which will lead to deterioration of oil quality, increased wear, increased corrosion, blockage of oil passages and filter screens, adhesion of piston rings, and mechanical failure. In order to prevent the formation of these substances and ensure the normal, long-lasting and economical operation of the internal combustion engine, a detergent and dispersant is added to the lubricating oil to neutralize the ac...