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Fluorine-containing rare earth nano lubricating oil additive and preparation process thereof

A lubricating oil additive and additive technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of poor dispersion stability of nano inorganic solid lubricating materials, and achieve the effect of good synergy, uniform and stable dispersion

Inactive Publication Date: 2008-06-18
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current nano-inorganic solid lubricants with excellent tribological properties have not been widely used due to their poor dispersion stability in base oils.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] With 7.28g cetyltrimethylammonium bromide, 500ml organic solvent (V / V trichloromethane: isooctane=1:1), 25 ℃ 5ml lanthanum chloride saturated aqueous solution (3.89mol / L), 6.049 g of isopropyloctyldecylamine was added to a four-neck flask with temperature control and stirring to dissolve the solid, and concentrated hydrochloric acid was added dropwise to make the mixture clear and transparent. Pass a certain amount of hydrogen fluoride gas into the microemulsion at 25°C until the mixture turns blue. Evaporate under reduced pressure at 30°C for 24 hours to obtain a light yellow viscous liquid, to which 650ml of tetrahydrofuran was added and stirred, and the insoluble matter was filtered off. Finally, tetrahydrofuran was evaporated under reduced pressure to obtain 5.13 g of a yellow substance, that is, lanthanum fluoride nanoparticles coated with nitrogen-containing organic matter were prepared.

Embodiment 2

[0039] With 273g cetyltrimethylammonium bromide, 5000ml organic solvent (V / V chloroform: normal hexane = 1: 1), 25 ℃ 5ml lanthanum chloride saturated aqueous solution (3.89mol / L), 14.199g tert-butylamine , adding to a four-neck flask with temperature control and stirring for mixing to dissolve the solid, and adding concentrated hydrochloric acid dropwise to make the mixture clear and transparent. A sufficient amount of hydrogen fluoride gas was passed through the microemulsion until the mixture turned blue. Evaporate under reduced pressure at 30°C for 24 hours to obtain a light yellow viscous liquid, to which 500ml tetrahydrofuran was added and stirred, and the insoluble matter was filtered off. Finally, tetrahydrofuran was evaporated under reduced pressure to obtain 4.73 g of a yellow substance, that is, lanthanum fluoride nanoparticles coated with nitrogen-containing organic matter were prepared.

Embodiment 3

[0041] With 21.84g cetyltrimethylammonium bromide, 600ml organic solvent (V / V chloroform: isooctane=1: 1), 20.946g ashless dispersant T154 (produced by Jinzhou Petrochemical Company, nitrogen content 1.3%) wt), 5ml of lanthanum chloride saturated aqueous solution (3.89mol / L) at 25°C was added into a four-neck flask with temperature control and stirring to dissolve the solid, and concentrated hydrochloric acid was added dropwise to make the mixture clear and transparent. A sufficient amount of hydrogen fluoride gas was passed through the microemulsion until the mixture turned blue. Evaporate under reduced pressure at 30°C for 24 h to obtain a black viscous liquid, to which 300 ml of tetrahydrofuran was added and stirred, and the insoluble matter was filtered off. Finally, tetrahydrofuran was evaporated under reduced pressure to obtain 5.24 g of black matter, that is, lanthanum fluoride nanoparticles coated with nitrogen-containing organic matter were prepared.

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Abstract

The invention relates to a fluorine-containing rare earth nanometre-sized lube oil additive and its process for preparing. The invention comprises adopting organic surface to cover in the preparing nanoparticle course, recognizing the modifying agent as a part of the reaction system while synthesizing the particles, when the particles are formed, the particle surface adsorbs the modifying agent through the interface to form chelate polymer, then the modifying agent is covered on the particle surface evenly and tightly. The grain diameter of the nanoparticle prepared by backward microemulsification in this invention is of 12-17 nm, the rare earth nanoparticle covered by the organic surface can evenly steadily disperse in the base oil and the compounded synergistic effect with lube oil or other additives is good.

Description

technical field [0001] The invention relates to a fluorine-containing rare earth nano lubricating oil additive and a preparation method thereof, in particular to a fluorine-containing rare earth nano lubricating oil additive and a preparation method thereof for water-in-oil microemulsion. technical background [0002] Lubricants are an integral part of machinery operation and maintenance. With the increasing load, speed, temperature and other working parameters of modern machinery and equipment, the original friction reducer and antiwear agent in lubricating oil can no longer fully meet the requirements of its antifriction and antiwear performance. Since the 1990s, with the in-depth research on nanomaterials and technologies, it has been found that inorganic-organic nanomaterials have broad application prospects in many fields due to their good optical, electrical, magnetic and mechanical properties. The unique structure of the material makes it have special tribological pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/04C09C3/08
Inventor 周晓龙余国贤易书理李志良余亚清
Owner EAST CHINA UNIV OF SCI & TECH
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