Lubricating oil additive based on modified nano alumina and preparation method of lubricating oil additive

A nano-alumina, lubricating oil technology, applied in additives, petroleum industry, lubricating compositions, etc., can solve problems affecting lubricating oil performance and stability, and achieve improved wear resistance, good performance stability, wear resistance Spot diameter reduction effect

Inactive Publication Date: 2018-04-06
苏州市宽道模具机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing disclosed technology, although the addition of nanomaterials can improve some properties of lubricating oil, the long-term stability of nanomaterials in the lubricating oil system will be seriously affected, thereby further affecting the performance of lubricating oil

Method used

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  • Lubricating oil additive based on modified nano alumina and preparation method of lubricating oil additive
  • Lubricating oil additive based on modified nano alumina and preparation method of lubricating oil additive
  • Lubricating oil additive based on modified nano alumina and preparation method of lubricating oil additive

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Effect test

Embodiment 1

[0021] A preparation method of a lubricating oil additive based on modified nano-alumina, comprising the steps of:

[0022] (1) Add 40 parts of nano-alumina, isopropanol, polyethylene glycol, and polyvinylpyrrolidone into 120 parts of an aqueous solution, and after ultrasonic treatment for 15 minutes at room temperature, place it on a magnetic stirrer for stirring. Slowly add 2wt% aluminum-zirconium coupling agent, and stir the reaction system at 50°C for 30 minutes; adjust the pH of the reaction solution to 9.0-9.5 with dilute hydrochloric acid, and form a gel after stirring for 3-5 minutes ; Wash the gel product 3 times with ethanol solution, collect the solid precipitate, and add it to the autoclave for 2-4 hours to react to obtain modified nano-alumina; wherein, the nano-alumina is mixed with isopropanol, polyethylene The mass volume ratio g / mL of diol and polyvinylpyrrolidone is 20:1, 15:1, 15:1 respectively, and the mass volume ratio g / mL of the nano-alumina and aluminum...

Embodiment 2

[0027] A preparation method of a lubricating oil additive based on modified nano-alumina, comprising the steps of:

[0028] (1) Add 30 parts of nano-alumina, isopropanol, polyethylene glycol, and polyvinylpyrrolidone into 80 parts of an aqueous solution, and after ultrasonic treatment for 10 minutes at room temperature, place it on a magnetic stirrer for stirring. Slowly add 1wt% aluminum-zirconium coupling agent, and stir the reaction system at 40°C for 20 minutes; adjust the pH of the reaction solution to 9.0-9.5 with dilute hydrochloric acid, and form a gel after stirring for 3-5 minutes ; Wash the gel product 3-5 times with ethanol solution, collect the solid precipitate, and add it to a high-pressure reactor for 2 hours to obtain modified nano-alumina; wherein, the nano-alumina is mixed with isopropanol, polyethylene The mass volume ratio g / mL of diol and polyvinylpyrrolidone is 15:1, 10:1, 12:1 respectively, and the mass volume ratio g / mL of the nano-alumina and aluminum...

Embodiment 3

[0033] A preparation method of a lubricating oil additive based on modified nano-alumina, comprising the steps of:

[0034] (1) Add 50 parts of nano-alumina, isopropanol, polyethylene glycol, and polyvinylpyrrolidone into 150 parts of an aqueous solution, and after ultrasonic treatment at room temperature for 20 minutes, place it on a magnetic stirrer for stirring. Slowly add 3wt% aluminum-zirconium coupling agent, and stir the reaction system at 60°C for 40 minutes; adjust the pH of the reaction solution to 9.0-9.5 with dilute hydrochloric acid, and form a gel after stirring for 3-5 minutes ; Wash the gel product 3-5 times with ethanol solution, collect the solid precipitate, and add it to a high-pressure reactor for 4 hours to obtain a modified nano-alumina; wherein, the nano-alumina is mixed with isopropanol, polyethylene The mass volume ratio g / mL of diol and polyvinylpyrrolidone is 30:1, 20:1, 18:1 respectively, and the mass volume ratio g / mL of the nano-alumina and alumi...

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Abstract

The invention provides a lubricating oil additive based on modified nano alumina and a preparation method of the lubricating oil additive. The preparation method comprises steps as follows: (1) nano alumina is modified; (2) molybdenum disulfide, titanium dioxide, graphene oxide, oleic acid and modified nano alumina are put in a ball mill for ball milling, and a powdery mixture is obtained; (3) thepowdery mixture prepared in the step (2), dodecyl methyl methacrylate and vinyl acetate are mixed uniformly, and the lubricating oil additive is obtained. The prepared additive is added to the lubricating oil, so that the wear resistance of the lubricating oil is greatly improved, and besides, the wear spot diameter is notably reduced. The performance parameters of the lubricating oil with the additive oil added have no obvious change after the lubricating oil is stored for 3 months and 6 months, which proves that the modified nano alumina and doping of nano alumina with other nanoparticles have great influence on the performance of lubricating oil.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil for machinery, and in particular relates to a lubricating oil additive based on modified nano-alumina and a preparation method thereof. Background technique [0002] Lubricating oil is a liquid lubricant used in various types of machinery to reduce friction and protect machinery and processed parts. It mainly plays the role of reducing friction, cooling, sealing, buffering, rust prevention, cleaning and neutralization. Since lubricating oil is mostly used in harsh working environments such as high temperature and high pressure, after a period of use, due to physical or chemical factors, such as aldehydes, ketones, resins, asphalt colloidal substances, carbon black and organic acids, salts, Impurities such as water and metal debris will change the performance of the lubricating oil and can no longer be used. The service life of lubricating oil is short, which leads to large consumption of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/02C10N30/06
CPCC10M141/02C10M2201/041C10M2201/062C10M2201/066C10M2207/126C10M2207/281C10N2020/06C10N2030/06
Inventor 廖锡林
Owner 苏州市宽道模具机械有限公司
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