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A kind of lubricating grease containing nano rare earth oxide and its preparation method

A technology of nano-rare earth and lubricating grease, which is applied in the field of lubrication, can solve the problems of uneven dispersion of additives, small mixing degree between soap particles, and inconspicuous lubricating effect, and achieve obvious anti-wear and anti-friction effects, good thermal stability, and extremely The effect of pressure increase

Inactive Publication Date: 2019-02-22
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modified nano-rare earth oxide has an unstable structure and is easy to precipitate; it only needs to be modified under certain working conditions or special requirements, and its application range is limited
In addition, adding additives after saponification of lubricating grease will cause problems such as uneven dispersion of additives, small mixing degree between soap particles, and inconspicuous lubricating effect.

Method used

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  • A kind of lubricating grease containing nano rare earth oxide and its preparation method
  • A kind of lubricating grease containing nano rare earth oxide and its preparation method
  • A kind of lubricating grease containing nano rare earth oxide and its preparation method

Examples

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Effect test

example 1

[0030] Example 1: Take a certain amount of pure rapeseed oil and filter it to remove impurities, add activated carbon at 110°C for decolorization, and obtain treated pure rapeseed oil. Get this base oil of 60.165g, the nanometer CeO of 1 / 3 base oil, 10.289g lauryl hydroxystearic acid and 0.007g 2 Mix in advance for 10 minutes, wait until the temperature of the oil bath reaches 110°C, add lithium hydroxide-calcium hydroxide solution dropwise. After feeding nitrogen, slowly add the solution dropwise, the state of the reactant changes from liquid to solid, and add about 1 / 3 of base oil at an appropriate time, and keep saponifying for 1 hour. When the state of the reactant no longer changes, the temperature is raised to 150°C to remove water for 1 hour. When there are no water droplets and no water vapor, add residual oil, raise the temperature to 220°C, and the solid (dilute) reactant reaches a true solution state, and keep it for 5 minutes. After natural cooling, collect the g...

example 2

[0031] Example 2: Take a certain amount of pure rapeseed oil and filter it to remove impurities, add activated carbon at 110°C for decolorization, and obtain treated pure rapeseed oil. Get this base oil of 60.392g, the nanometer CeO of 1 / 3 base oil, 10.392g lauryl hydroxystearic acid and 0.035g 2 Mix in advance for 10 minutes, wait until the temperature of the oil bath reaches 110°C, add calcium hydroxide solution dropwise. After feeding nitrogen, slowly add the solution dropwise, the state of the reactant changes from liquid to solid, and add about 1 / 3 of base oil at an appropriate time, and keep saponifying for 1 hour. When the state of the reactant no longer changes, the temperature is raised to 150°C to remove water for 1 hour. When there are no water droplets and no water vapor, add residual oil, raise the temperature to 220°C, and the solid (dilute) reactant reaches a true solution state, and keep it for 5 minutes. After natural cooling, collect the grease.

example 3

[0032]Example 3: Take a certain amount of pure rapeseed oil and filter it to remove impurities, add activated carbon at 110°C for decolorization, and obtain treated pure rapeseed oil. Get this base oil of 60.377g, the nanometer CeO of 1 / 3 base oil, 10.216g lauryl hydroxystearic acid and 0.07g 2 Mix in advance for 10 minutes, wait until the temperature of the oil bath reaches 110°C, add the prepared 10% lithium hydroxide solution dropwise. After feeding nitrogen, slowly add the solution dropwise, the state of the reactant changes from liquid to solid, and add about 1 / 3 of base oil at an appropriate time, and keep saponifying for 1 hour. When the state of the reactant no longer changes, the temperature is raised to 150°C to remove water for 1 hour. When there are no water droplets and no water vapor, add residual oil, raise the temperature to 220°C, and the solid (dilute) reactant reaches a true solution state, and keep it for 5 minutes. After natural cooling, collect the grea...

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Abstract

The invention discloses a lubricating grease containing nano-rare earth oxides and a preparation method thereof. The additive in the lubricating grease is nano-CeO 2 or nano La 2 o 3 , nano-CeO 2 or nano La 2 o 3 The mass percentage in the lubricating grease is 0.01%-1%. Nano rare earth oxide is added before saponification, and different base oils are used for saponification to form lithium-based grease, calcium-based grease or lithium-calcium-based grease. The beneficial effect of the present invention is obvious: (1) can fully disperse additive, increase the mixing degree of nanometer material; (2) reuse waste vegetable oil or low-priced pure rapeseed oil, is a kind of environment-friendly lubricating grease; (3) ) The unmodified nano-rare earth oxide has a wide range of applications, and the lubricating grease containing the nano-rare earth oxide has good tribological properties and thermal stability.

Description

technical field [0001] The invention belongs to the technical field of lubrication, and relates to a lubricating grease and a preparation method thereof, in particular to a lubricating grease added with rare earth oxides and a preparation method thereof. Background technique [0002] Nanotechnology is an emerging technology in the new century, which is applied in many fields such as environment, materials, communication and processing. Nanomaterials have attracted the attention of various countries, and under the impetus of the concept of sustainable development of my country's economy, the related research of nanomaterials has opened a new chapter. After the technical interdisciplinary research of various disciplines, how to use nanomaterials and develop the modification of new nanomaterials has been hotly discussed. Due to my country's rich rare earth resources, many researchers have introduced nanotechnology into the field of rare earth industry. [0003] Cui Ruimin and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/06C10M125/10C10M121/04C10N30/06C10N30/08C10N50/10
CPCC10M121/04C10M125/10C10M169/06C10M2201/062C10M2207/126C10M2207/401C10N2030/06C10N2030/08C10N2050/10C10N2010/06C10N2020/06
Inventor 何忠义朱星星熊丽萍
Owner EAST CHINA JIAOTONG UNIVERSITY