Method for improving elastic deformability of lithium-based lubricating grease by using surface modified nanoparticles

A technology of surface modification of nanometer, lithium-based grease, applied in the field of grease, can solve the problems of declining lubricating performance, restricting the use of high-viscosity lubricating oil, etc., to achieve the effect of improving pumping capacity and changing elastic deformation capacity

Inactive Publication Date: 2017-02-15
HUIZHOU RES INST OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to change the viscosity characteristics of the grease and improve the pumping capacity during the pumping process, a common method is to select a low-viscosity bas

Method used

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  • Method for improving elastic deformability of lithium-based lubricating grease by using surface modified nanoparticles
  • Method for improving elastic deformability of lithium-based lubricating grease by using surface modified nanoparticles
  • Method for improving elastic deformability of lithium-based lubricating grease by using surface modified nanoparticles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] According to the parts by weight in Table 2, weigh the required amount of base oil polyalphaolefin, thickener 12-hydroxy lithium stearate, etc., heat and stir to 220°C, heat at constant temperature for 60 minutes, stop heating and cool at room temperature To 120°C, add 1 part of hydrophilic nano-alumina with a particle size of 10nm-30nm, stir and cool to room temperature, and grind three times with a three-roller machine. The types and amounts of each component in the grease are shown in Table 2. For embodiment 1 amplitude scanning modulus of elasticity result see figure 2 .

[0028] Table 2

[0029] Element parts by weight polyalphaolefin 87 Lithium 12-hydroxystearate 13 Hydrophilic Nano Alumina 1

Embodiment 2

[0031] According to the parts by weight in Table 3, weigh the required amount of base oil, thickener, etc., heat and stir to 220°C, heat at a constant temperature for 60 minutes, stop heating and cool at room temperature to 90°C, add 1 part of lipophilic nano-oxidizer Aluminum, whose particle size is 10nm-30nm, is stirred and cooled to room temperature, and ground three times with a three-roll machine. See Table 3 for the types and amounts of each component in the grease. For embodiment 2 amplitude scanning modulus of elasticity result see image 3 .

[0032] table 3

[0033] Element parts by weight polyalphaolefin 87 Lithium 12-hydroxystearate 13 Oleophilic Nano Alumina 1

Embodiment 3

[0035] According to the parts by weight in Table 4, weigh the required amount of base oil, thickener, etc., heat and stir to 220°C, heat at a constant temperature for 60 minutes, stop heating and cool at room temperature to 90°C, add 5 parts of hydrophilic nano-oxidizer Aluminum, whose particle size is 10nm-30nm, is stirred and cooled to room temperature, and ground three times with a three-roll machine. See Table 4 for the types and amounts of each component in the grease. For embodiment 4 amplitude scanning modulus of elasticity result see Figure 4 .

[0036] Table 4

[0037] Element parts by weight polyalphaolefin 87 Lithium 12-hydroxystearate 13 Hydrophilic Nano Alumina 5

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Abstract

The invention relates to the technical field of lubricating greases, in particular to a method for improving elastic deformability of lithium-based lubricating grease by using surface modified nanoparticles. By a method of adding the surface modified nanoparticles, the elastic deformability of the lithium-based lubricating grease which uses poly-alpha-olefin as base oil and 12-lithium hydroxystearate as a thickening agent is changed so as to improve the pumping capacity of the lithium-based lubricating grease.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a method for improving the ability of lithium-based lubricating grease to resist elastic deformation by using surface-modified nanoparticles. Background technique [0002] Lubrication is the main means to reduce friction and wear. Centralized lubrication refers to a system in which lubricating oil and grease are accurately supplied to multiple lubricating points from one lubricating oil supply source through some distributors to distribute pipelines and oil quantity metering pieces according to a certain period of time. [0003] Lithium-based grease is one of the commonly used lubricating materials. Its main components are base oil and thickener. It has extremely complex rheological properties and exhibits strong non-Newtonian fluid properties. Grease has a certain resistance during the pipeline supply process, and at the same time, due to its complex rheological char...

Claims

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Application Information

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IPC IPC(8): C10M125/10C10M159/12C10M169/06C10M171/00C10N30/06C10N50/10C10N20/02C10N30/02
CPCC10M125/10C10M159/12C10M169/06C10M171/00C10M2201/062C10M2205/02C10M2207/128C10N2020/02C10N2030/06C10N2050/10C10N2010/02
Inventor 纪红兵麦嘉华曾晖晏金灿
Owner HUIZHOU RES INST OF SUN YAT SEN UNIV
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