Perfluoropolyether supermolecular gel composite nano-particle lubricant as well as preparation method and application thereof

A technology of composite nanoparticles and supramolecular gels, which can be used in lubricating compositions, petroleum industry, etc., and can solve problems such as poor dispersion stability of nanoparticles

Active Publication Date: 2020-09-08
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the use of supramolecular gel lubricants to solve the problem of poor dispersion stability of nanoparticles in perfluoropolyether lubricants

Method used

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  • Perfluoropolyether supermolecular gel composite nano-particle lubricant as well as preparation method and application thereof
  • Perfluoropolyether supermolecular gel composite nano-particle lubricant as well as preparation method and application thereof
  • Perfluoropolyether supermolecular gel composite nano-particle lubricant as well as preparation method and application thereof

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preparation example Construction

[0019] In the present invention, the preparation method of the gel factor preferably comprises the following steps:

[0020] 1,1,2,2-tetrahydroperfluoro-1-decanol and 1,6-n-butyl hexamethylene diisocyanate are subjected to polyurethane reaction in a solvent to obtain the gel factor with the molecular formula shown in formula I.

[0021] In the present invention, the molar ratio of the 1,1,2,2-tetrahydroperfluoro-1-decanol to 1,6-n-butyl hexamethylene diisocyanate is preferably 2:1; the solvent is preferably Acetonitrile; the temperature of the polyurethane reaction is preferably 80-85°C, more preferably 82-83°C, and the time is preferably 12h; the polyurethane reaction is preferably carried out under reflux conditions.

[0022] In a specific embodiment of the present invention, it is preferred to first dissolve 1,1,2,2-tetrahydroperfluoro-1-decanol in a solvent, stir at room temperature for 10 minutes, and then dissolve 1,6-hexamethylene diisocyanate The n-butyl acid was adde...

Embodiment 1

[0034] Add 0.02mol 1,1,2,2-tetrahydroperfluoro-1-decanol to a 250mL three-necked flask, and add 80mL acetonitrile as a solvent, and stir at room temperature for 10min to make 1,1,2,2-tetrahydroperfluoro -1-decanol was completely dissolved to obtain 1,1,2,2-tetrahydroperfluoro-1-decanol solution. Then take 0.01mol of 1,6-hexamethylene diisocyanate and add it dropwise to the 1,1,2,2-tetrahydroperfluoro-1-decanol solution obtained above while stirring, and then stir for 10 minutes to make the solution evenly mixed . Then, it was placed in an oil bath at 85°C and heated under reflux and stirred for 12 hours to obtain a milky white mixed solution, which was cooled to room temperature, filtered with suction and washed twice with acetonitrile, and finally dried in a vacuum oven at 80°C for 8 hours to obtain White powder gel factor. The mass spectrum of the obtained gel factor is as follows figure 1 As shown, it can be seen through mass spectrometry analysis that characteristic pea...

Embodiment 2

[0036] According to the mass concentration ratio of 1.5wt%, take the equivalent gel factor prepared in Example 1, and place the gel factor at a high temperature of 130°C to completely dissolve the gel factor in perfluoropolyether lubricating oil (purchased from Shenzhen Bomei Industrial Materials Co., Ltd. company). Then, add molybdenum disulfide nanoparticles (particle size 100nm, flake structure) in the proportion of 2.0wt%, 3.0wt%, and 4.0wt% respectively according to the mass concentration ratio, stir until the nanoparticles are mixed evenly, take out and cool to room temperature to obtain Perfluoropolyether supramolecular gel composite molybdenum disulfide nanoparticle lubricant, respectively denoted as GEL@2.0%MoS 2 、GEL@3.0%MoS 2 and GEL@4.0%MoS 2 .

[0037] Anti-friction performance test: The Optimol-SRV-IV friction and wear testing machine was used to evaluate the tribological performance of the prepared perfluoropolyether supramolecular gel composite molybdenum di...

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Abstract

The invention relates to the technical field of lubricating materials, and provides a perfluoropolyether supermolecular gel composite nano-particle lubricant as well as a preparation method and application thereof. According to the invention, the perfluoropolyether lubricating oil forms the supermolecular gel lubricant by using a gelator; the nano-particles are limited by using the limiting effectof supermolecular gel, so that the nano-particles are stably dispersed in the perfluoropolyether lubricating oil, and the nano-particles are used as an additive to effectively improve the wear resistance and friction reduction performance of the supermolecular gel lubricating oil and greatly improve the bearing capacity of the supermolecular gel. According to the perfluoropolyether supermoleculargel composite nano-particle lubricant provided by the invention, the problem of poor dispersion stability of nano-particles in perfluoropolyether lubricating oil is solved; a good solution is provided for the application of the nano-particles in the lubricant under the caustic conditions of aerospace and the like, and the method has important significance for prolonging the service life of mechanical equipment in the high-end fields of aerospace and the like.

Description

technical field [0001] The invention relates to the technical field of lubricating materials, in particular to a perfluoropolyether supramolecular gel composite nanoparticle lubricant and a preparation method and application thereof. Background technique [0002] Perfluoropolyether lubricating oil is widely used in aerospace and other high-end fields because of its high chemical stability, wide temperature range, and good radiation resistance. However, this high-cost perfluoropolyether lubricating oil has an important defect, that is, the dispersion of nano-additives in the lubricating oil is poor. As we all know, nanoparticles show excellent tribological properties as lubricating additives. It can not only form a protective film on the surface of the friction pair, reduce the direct contact of the friction pair, thereby reducing the friction coefficient; it can also use its small size characteristics to enter To the scratches, fill and repair the worn surface to reduce wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/04C10N30/06
CPCC10M169/04C10M2201/062C10M2201/066C10M2209/1033C10M2215/08
Inventor 蔡美荣白艳艳周峰刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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