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Lubricating oil with oxidation stability

A technology of oxidation stability and lubricating oil, applied in the field of lubricating oil, can solve the problems of reducing friction, cooling, sealing, buffering, rust prevention, cleaning, poor oxidation stability of lubricating oil, easy to change performance, etc., to achieve good lubrication, High viscosity index, the effect of improving stable performance

Inactive Publication Date: 2019-09-20
界首永恩机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because lubricating oil is mostly used in harsh working environments such as high temperature and high pressure, its original performance is prone to change, and even no longer plays the role of reducing friction, cooling, sealing, buffering, rust prevention, cleaning and neutralization. As a result, about 30% of mechanical energy is consumed in friction every year, and 80% of damaged equipment is scrapped due to wear and tear. The existing lubricating oil has poor oxidation stability, resulting in a significant reduction in its service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A lubricating oil with oxidation stability, comprising the following steps:

[0019] (1) Synthesis of ester modifier: obtained by mixing and reacting methyl isopropenyl ketone and ethyl dichloroacetate in an organic solvent under the condition of cesium carbonate as a catalyst;

[0020] (2) Nanoparticle treatment: Evenly disperse the nanoparticles into the treatment solution, adjust the pH of the treatment solution to 2.2 with hydrochloric acid, slowly heat to 60°C, and stir at 150r / min for 2 hours before filtering, and then use the mass fraction Wash and soak in 30% ethanol solution for 10 minutes, then wash with water, and dry to constant weight to obtain modified nanoparticles;

[0021] (3) Base oil pretreatment: heat the base oil to 100°C, then stir at 1500r / min for 40 minutes, then add 1.2% polyisobutenyl succinimide to the base oil, and continue stirring for 30 minutes. Obtain pretreated base oil;

[0022] (4) Preparation of lubricating oil: The lubricating oil ...

Embodiment 2

[0030] A lubricating oil with oxidation stability, comprising the following steps:

[0031] (1) Synthesis of ester modifier: obtained by mixing and reacting methyl isopropenyl ketone and ethyl dichloroacetate in an organic solvent under the condition of cesium carbonate as a catalyst;

[0032] (2) Nanoparticle treatment: uniformly disperse the nanoparticles into the treatment solution, adjust the pH of the treatment solution to 2.5 with hydrochloric acid, slowly heat to 70°C, and stir at 150r / min for 2 hours before filtering, and then use the mass fraction Wash and soak in 30% ethanol solution for 10 minutes, then wash with water, and dry to constant weight to obtain modified nanoparticles;

[0033] (3) Base oil pretreatment: heat the base oil to 110°C, then stir at 1500r / min for 40 minutes, then add 1.5% polyisobutenyl succinimide to the base oil, and continue stirring for 30 minutes. Obtain pretreated base oil;

[0034] (4) Preparation of lubricating oil: The lubricating o...

Embodiment 3

[0042] A lubricating oil with oxidation stability, comprising the following steps:

[0043] (1) Synthesis of ester modifier: obtained by mixing and reacting methyl isopropenyl ketone and ethyl dichloroacetate in an organic solvent under the condition of cesium carbonate as a catalyst;

[0044](2) Nanoparticle treatment: Evenly disperse the nanoparticles into the treatment solution, adjust the pH of the treatment solution to 2.3 with hydrochloric acid, slowly heat to 65°C, and stir at 150r / min for 2 hours before filtering, and then use the mass fraction Wash and soak in 30% ethanol solution for 10 minutes, then wash with water, and dry to constant weight to obtain modified nanoparticles;

[0045] (3) Base oil pretreatment: heat the base oil to 102°C, then stir at 1500r / min for 40 minutes, then add 1.3% polyisobutenyl succinimide to the base oil, and continue stirring for 30 minutes. Obtain pretreated base oil;

[0046] (4) Preparation of lubricating oil: The lubricating oil i...

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PUM

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Abstract

Relating to the technical field of lubricating oil, the invention discloses lubricating oil with oxidation stability. The lubricating oil is prepared by the steps of: (1) synthesis of a modifier; (2) nanoparticle treatment; and (4) preparation of the lubricating oil. The lubricating oil prepared according to the invention has high viscosity index, and low pour point and flocculation point, and can be applied to occasions with higher performance requirements.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, in particular to a lubricating oil with oxidation stability. Background technique [0002] Mechanical lubricant mainly refers to the liquid lubricant coated on the surface of a certain part of the machine to reduce friction and protect machinery and workpieces. It mainly plays the role of reducing friction, cooling, sealing, buffering, rust prevention, cleaning and neutralization. Generally, it is the product of fractionated petroleum, and it is also extracted from animal and vegetable oils, also known as "lubricating grease". Non-volatile oily lubricants are divided into three categories according to their sources: moving oil, vegetable oil, petroleum lubricating oil and synthetic lubricating oil. The most important properties of lubricating oil are viscosity, oxidation stability and lubricity, which are closely related to the composition of lubricating oil fractions. Viscosity is an im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M177/00C10N30/02C10N30/10C10N30/06
CPCC10M169/04C10M177/00C10M2201/103C10M2201/14C10M2205/0206C10M2207/281C10M2215/28C10N2030/02C10N2030/06C10N2030/10C10N2020/06
Inventor 张海涛
Owner 界首永恩机电科技有限公司
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