Lubricating oil containing sheet magnetic nanometer Fe3O4 particles and preparation method of lubricating oil

A kind of magnetic nano and lubricating oil technology, applied in lubricating composition, petroleum industry, additives and other directions, can solve the problems of low stability, easy precipitation, corrosion, etc., to improve anti-friction and anti-wear performance, good dispersibility and The effect of stability and wide application prospects

Inactive Publication Date: 2013-08-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of anti-wear and anti-friction additives used in lubricating oil, but they can be roughly divided into two categories: one is oil-soluble organic compounds, which are easy to combine with lubricating oil and evenly dispersed in various lubricating oils, which can effectively change the lubrication The quality of the oil, but harmful components may be produced during the friction process, especially when the temperature is high, it may corrode the bearing materials of non-ferrous metals (such as silver and tin); the other type is the solid lubricant type, which is made of some Solid particles with a layered or scaled structure (such as colloidal molybdenum disulfide, graphite, polytetrafluoroethylene, etc.) and some soft metals such as Pb and Cu are uniformly dispersed in lubricating oil, but solid lubricants in lubricating oil The dispersion and stability in the system are not good, and it is easy to precipitate after long-term storage, which affects the mechanical lubrication effect and the life of the lubricating oil
[0003] About nano Fe 3 o 4 Particles have also been studied as lubricating oil additives, but due to the synthesis of nano-Fe 3 o 4 The shape of the particles is irregular. After being modified and dispersed in the base oil, due to its large specific surface area, high surface activity, easy agglomeration, low stability, it cannot be placed for a long time, and because of its irregular shape, it cannot effectively improve the lubricating oil. The tribological properties of

Method used

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  • Lubricating oil containing sheet magnetic nanometer Fe3O4 particles and preparation method of lubricating oil
  • Lubricating oil containing sheet magnetic nanometer Fe3O4 particles and preparation method of lubricating oil
  • Lubricating oil containing sheet magnetic nanometer Fe3O4 particles and preparation method of lubricating oil

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Embodiment 1

[0028] Preparation of Flake Magnetic Nano-Fe by Oxidation Co-precipitation Assisted by Weak Magnetic Field 3 o 4 Particles: with FeCl 2 as raw material, NaOH as precipitant, H 2 o 2 as an oxidizing agent, in N 2 Under protection, by controlling the reactant FeCl 2 The concentration is 0.6mol·L -1 And the weak magnetic field intensity is 460Gs to make particle size be 20-70nm, sheet thickness is the flaky magnetic nanometer Fe of 20nm 3 o 4 Particles (for their morphology and particle size see figure 1 ), and then dried in a vacuum oven. The dried nano-Fe 3 o 4 Add 100g of pellets and 300g of deionized water into a beaker to prepare Fe 3 o 4 For suspension of nanopowder, place the beaker in a water bath at 80°C and keep stirring, then add glacial acetic acid solution with a concentration of 1mol / L to the beaker until the pH value drops to 6.9, and finally add 1.3g oleic acid slowly Carry out the coating reaction. After coating, the coated sample was washed with ab...

Embodiment 2

[0030] The difference between this embodiment and embodiment 1 is:

[0031] The composition of the lubricating oil contains 0.5% flake magnetic nano-Fe by mass percentage 3 o 4 particles.

Embodiment 3

[0033]The difference between this embodiment and embodiment 1 is:

[0034] The composition of the lubricating oil contains 1.0% flake magnetic nano-Fe by mass percentage 3 o 4 particles.

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Abstract

The invention discloses lubricating oil containing sheet magnetic nanometer Fe3O4 particles and a preparation method of the lubricating oil. The preparation method of the lubricating oil comprises the following steps of: (1), using oleic acid to clad sheet magnetic nanometer Fe3O4 particles to carry out surface modification to obtain modified Fe3O4 particles; (2), mixing the modified Fe3O4 particles with III base oil, wherein mass fraction of the modified Fe3O4 particles is 0.1%-2.0wt%, and preparing the lubricating oil containing sheet magnetic nanometer Fe3O4 particles through ultrasonic dispersion and high-speed shearing dispersion. The lubricating oil prepared by the preparation method disclosed by the invention has extremely good friction resistance and abrasion resistance, and high carrying capacity. Moreover, the prepared lubricating oil has the advantages of being stable in characteristics, capable of being stored for a long time without precipitation. Besides, the lubricating oil can be extensively applied to mechanical lubricating, can be used for saving energy consumption and prolonging service lives of mechanical parts, and therefore, the application prospect is extensive.

Description

technical field [0001] The invention belongs to sheet magnetic nano Fe 3 o 4 Granules are used in the technical field of lubricating oils. Background technique [0002] Lubricating oil generally consists of two parts: base oil and additives. Base oil is the main component of lubricating oil, which determines the basic properties of lubricating oil. Additives can make up for and improve the performance of base oil, endow some new properties, and are an important part of lubricating oil. There are many kinds of anti-wear and anti-friction additives used in lubricating oil, but they can be roughly divided into two categories: one is oil-soluble organic compounds, which are easy to combine with lubricating oil and evenly dispersed in various lubricating oils, which can effectively change the lubrication The quality of the oil, but harmful components may be produced during the friction process, especially when the temperature is high, it may corrode the bearing materials of no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/10C10M177/00C10N30/06
Inventor 王燕民向龙华高传平潘志东胡大为
Owner SOUTH CHINA UNIV OF TECH
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