Solid-liquid phase composite internal combustion engine oil additive

Abstract

The invention relates to a solid-liquid phase composite internal combustion engine oil additive and a preparation method thereof. The additive consists of a solid lubricating material, a liquid medium and other auxiliary materials. The auxiliary materials consist of a dispersant, an oxidation and corrosion inhibitor, a detergent and a stable dispersant, which are processed into the solid-liquid phase composite internal combustion engine oil additive with a stable dispersion system by high-speed shearing emulsification, ultrasonic oscillation and sanding dispersion. The additive is added into a finished product of the internal combustion engine oil according to a certain proportion. During usage, a liquid-solid composite lubricating film is formed on the surface of a friction pair of an internal combustion engine. The composite lubricating film can improve the lubrication status of the surface of the friction pair of the internal combustion engine so as to reduce the friction and relieve the abrasion. Meanwhile, the energy is saved and the air leakage quantity of the engine is reduced. The air tightness is improved and the power property is enhanced. The service life of the engine is prolonged.

Description

1. Technical field: [0001] The invention belongs to the field of lubricants, and in particular relates to a solid-liquid composite type internal combustion engine oil additive. 2. Background technology: [0002] Lubrication is to add a lubricant between the frictional contact surfaces in relative motion, so that a lubricating film is formed between the two contacting surfaces, and the dry friction becomes the internal friction between the molecules inside the lubricant, so as to reduce friction, reduce wear and prolong the use of mechanical equipment purpose of life. [0003] Modern lubricants can be roughly divided into the following categories: [0004] 1. Liquid lubricants: including animal and vegetable oils, mineral oils, synthetic oils, water-based liquids, etc. [0005] 2. Semi-solid lubricant: It is a lubricating material-lubricating grease that is in a semi-fluid state at normal temperature and pressure and has a colloidal structure. [0006] 3. Solid lubricant: ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the oil film strength of the liquid lubricant is not high enough. When the boundary lubrication or the equipment stops running, the liquid lubricant returns to the oil pan (or oil tank). At this time, the thickness of the lubricating film on the friction pair is less than 1um (complete liquid lubrication The thickness of the oil film should be in the range of 2 ~ 10um, and it must be continuous), this thickness cannot meet the requirements of equipment operation

However, none of them can achieve a uniform and stable solid-liquid dispersion system.

The stability is extremely poor. During the storage process, the solid-liquid phase system can only be stable for about three months at the longest, and solid-liquid separation will occur. Serious solids will precipitate and harden in the lower part of the container; it will not work well during use. To achieve a stable lubrication effect, even deposits will be formed on the metal surface, which will block the oil circuit and cause equipment damage

[0016] In addition, due to the lack of reasonable selection of the optimal particle size distribution zone of the solid lubricating material and the matching additive formula suitable for different applications (according to the difference in the surface roughness of various friction pairs), resulting in the use process, The lubricating film cannot achieve the best lubricating effect, and the strength of the oil film cannot reach the ideal state

Images