Preparation method of lubricating oil additive with antiwear and antifriction effect

A lubricating oil additive and functional technology, applied in the field of lubricating oil, can solve problems such as environmental pollution, large particle size, chemical corrosion, etc., and achieve the effects of protecting the environment, reducing particle wear, and prolonging life

Inactive Publication Date: 2020-01-24
MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphides have anti-wear properties, and dichlorides and sulfides have extreme pressure properties. However, compound additives such as sulfur, phosphorus, chlorine, and lead are likely to cause pollution or chemical corrosion to the environment. For example, chlorinated paraffin is easy to decompose above 70°C Chlorine gas, which forms hydrogen chloride with moisture in the air, causing corrosion to equipment; due to the large particle size of organic molybdenum, it is easy to precipitate in oil, resulting in poor lubrication

Method used

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  • Preparation method of lubricating oil additive with antiwear and antifriction effect

Examples

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Effect test

Embodiment 1

[0017] A preparation method of a lubricating oil additive with anti-wear and anti-friction effects, the specific preparation method is as follows:

[0018] 1) Take 20 parts of 4,4-diphenylmethane diisocyanate in the reactor, melt at 50°C, then add 15 parts of hydroxyethyl methacrylate, and stir the reaction at 60°C at a speed of 50r / min 30 minutes, then add 5 parts of hydroxyl silicone oil and 30 parts of macromolecular diols after vacuum dehydration, catalyze with 0.2 parts of triethylamine, continue to stir and react for 50 minutes, then take 10 parts of di-n-butylammonium, add to the same equivalent 4,4-diphenylmethane diisocyanate, mixed and stirred at 100r / min for 10min, then added to the above reaction system, stirred and reacted at 50°C at a speed of 60r / min for 80min, to obtain a prepolymer;

[0019] 2) Add 0.6 parts of aromatic diamine to 3 parts of 1,4-butanediol, stir to dissolve and then add to the prepared prepolymer, stir at a speed of 100r / min for 30min, and the...

Embodiment 2

[0029] A preparation method of a lubricating oil additive with anti-wear and anti-friction effects, the specific preparation method is as follows:

[0030] 1) Put 25 parts of 4,4-diphenylmethane diisocyanate into the reactor, melt at 55°C, then add 20 parts of hydroxyethyl methacrylate, and stir the reaction at 65°C at a speed of 70r / min 25 minutes, then add 7 parts of hydroxyl silicone oil and 40 parts of macromolecular diols after vacuum dehydration, catalyze with 0.4 parts of triethylamine, continue to stir and react for 60 minutes, then take 13 parts of di-n-butylammonium, add to the same equivalent 4,4-diphenylmethane diisocyanate, mixed and stirred at 120r / min for 7min, then added to the above reaction system, stirred and reacted at 55°C at a speed of 80r / min for 70min, to obtain a prepolymer;

[0031] 2) Add 0.7 parts of aromatic diamine to 4 parts of 1,4-butanediol, stir to dissolve and add to the prepared prepolymer, stir at a speed of 150r / min for 25min, and then add...

Embodiment 3

[0041] A preparation method of a lubricating oil additive with anti-wear and anti-friction effects, the specific preparation method is as follows:

[0042] 1) Take 30 parts of 4,4-diphenylmethane diisocyanate in the reactor, melt at 60°C, then add 25 parts of hydroxyethyl methacrylate, and stir the reaction at 70°C at a speed of 80r / min 20 minutes, then add 8 parts of hydroxyl silicone oil and 50 parts of macromolecular diols after vacuum dehydration, catalyze with 0.5 parts of triethylamine, continue to stir and react for 70 minutes, then take 15 parts of di-n-butylammonium, add to the same equivalent 4,4-diphenylmethane diisocyanate, mixed and stirred at 150r / min for 5min, then added to the above reaction system, stirred and reacted at 60°C at a speed of 100r / min for 60min, to obtain a prepolymer;

[0043] 2) Add 0.8 parts of aromatic diamine to 5 parts of 1,4-butanediol, stir to dissolve and then add to the prepared prepolymer, stir for 20 minutes at a speed of 200r / min, an...

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Abstract

The invention discloses a preparation method of a lubricating oil additive with an antiwear and antifriction effect. The preparation method comprises the following steps: 1) preparing a polyurethane prepolymer; 2) preparing heat-resistant polyurethane microspheres; 3) preparing polyacrylonitrile / polyurethane copolymer microspheres through graft polymerization; 4) adding the polyacrylonitrile / polyurethane copolymer microspheres into a dimethylformamide solution, and carrying out stirring for dissolving to obtain bowl-shaped polyacrylonitrile / polyurethane copolymer particles; and 5) adding the polyacrylonitrile / polyurethane copolymer particles into a trimethylhydroxysilane solution, and carrying out stirring and drying. The lubricating oil additive is in a bowl-shaped particle structure, hasgood dispersion stability in lubricating oil, can form a layer of film with a pit structure on the surface of a friction pair by self-assembly, and can capture abrasive dust particles generated in anabrasion process, so that serious particle abrasion caused by abrasive dust is reduced, a good antiwear and antifriction effect is achieved, the service life of an engine is prolonged, and noise is reduced.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a preparation method of a lubricating oil additive with anti-wear and anti-friction effects. Background technique [0002] Friction and wear are inevitable in friction pairs. Friction loses about one-third of the world's primary energy, and wear is one of the three most important forms of damage and failure of materials and equipment. In mechanical equipment, where there is relative motion, there will be friction, and the accumulation of friction will cause wear on the surface of the friction pair. The existence of friction consumes extra energy and reduces mechanical efficiency. The occurrence of wear and tear will gradually cause the parts to lose dimensional accuracy and fail, resulting in the scrapping of equipment. Therefore, in the operation of mechanical equipment, various lubrication measures must be adopted to reduce the occurrence of friction and we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M171/06C10M177/00C10N30/06
CPCC10M161/00C10M171/06C10M177/00C10M2217/026C10M2217/045C10M2227/04
Inventor 李孙德
Owner MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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