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High temperature resistant lubricant and preparation method thereof

A high-temperature-resistant lubricant and antioxidant technology, applied in the field of lubricants, can solve the problems of equipment downtime, affecting the surface quality of friction pairs, and unable to maintain lubrication for a long time, and achieve good lubricity, extreme pressure and anti-wear. properties, extended storage and service life, good degradability

Active Publication Date: 2021-12-24
SHANGHAI JINZHAO ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under some extreme conditions such as high temperature and high pressure, because the oil in the frame escapes too quickly, causing dryness, the lubrication effect cannot be maintained for a long time, and frequent replacement of lubricants will cause equipment shutdown and manpower waste
[0003] In order to protect and repair the surface of the friction pair, nano or micron molybdenum disulfide additives are often added to the high-temperature grease, but because molybdenum disulfide is added to the lubricant in a solid form, stratification will occur if the storage time exceeds a certain period of time , affects the use, and at the same time, the particle size of molybdenum disulfide distributed in the grease in solid form will also directly affect the surface quality of the friction pair

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 800g of chitosan dimer ester amine compound, 200g of organic molybdenum, and 5g of tea polyphenols and place them in a homogenization device for homogenization for 2 hours to obtain a high-temperature-resistant lubricant.

[0031] The preparation method of the above-mentioned chitosan dimer ester amine compound: weigh 1000g of chitosan, 3000g of dimer acid, and 40g of phosphoric acid with a concentration of 50% and add them to the reaction kettle respectively, stir and heat to 240°C, and fully react for 8 hours. In the middle of the reaction, depressurize and drain twice, and after the reaction, depressurize and drain the water, which is a chitosan dimer ester amine compound.

[0032] The preparation method of the above-mentioned organic molybdenum: Weigh 200g of oleamide, 50g of molybdic acid, and 40g of hydroxyethylethanolamine, mix them, stir at 100°C for 1 hour, then raise the temperature to 110°C, keep the pressure in the container not greater than 100mmHg aft...

Embodiment 2

[0034] Weigh 900g of chitosan dimer ester amine compound and 100g of organic molybdenum and place them in a homogenization device for homogenization for 1 hour to obtain a high temperature resistant lubricant.

[0035] The preparation method of the above-mentioned chitosan dimer ester amine compound: weigh 1000g of chitosan, 4000g of dimer acid, and 50g of phosphoric acid with a concentration of 85% and add them to the reaction kettle respectively, stir and heat to 180°C, and fully react for 12 hours. In the middle of the reaction, depressurize and drain water for 3 times, and then decompress and drain water after the reaction, which is a chitosan dimer ester amine compound.

[0036] The preparation method of the above organic molybdenum: Weigh 100g of oleamide, 20g of molybdic acid, and 15g of hydroxyethylethanolamine, mix them, stir at 80°C for 2 hours, then raise the temperature to 120°C, keep the pressure in the container not greater than 100mmHg after decompression, and st...

Embodiment 3

[0038] Weigh 850g of chitosan dimer ester amine compound, 150g of organic molybdenum, and 10g of antioxidant (IrganoxL57) and place them in a homogenization device for homogenization for 1.5 hours to obtain a high-temperature-resistant lubricant.

[0039] The preparation method of the above-mentioned chitosan dimer ester amine compound: weigh 1000g of chitosan, 3500g of dimer acid, and 60g of phosphoric acid with a concentration of 50% and add them to the reaction kettle respectively, stir and heat to 200°C, and fully react for 10 hours. In the middle of the reaction, depressurize and drain water for 3 times, and then decompress and drain water after the reaction, which is a chitosan dimer ester amine compound.

[0040] The preparation method of the above-mentioned organic molybdenum: Weigh 200g of oleamide, 45g of molybdic acid, and 36g of hydroxyethylethanolamine, mix them, stir at 90°C for 1.5 hours, then raise the temperature to 115°C, keep the pressure in the container not...

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PUM

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Abstract

The invention provides a lubricating oil composition, which is characterized in that it contains chitosan dimer ester amine compounds; the chitosan dimer ester amine compounds are prepared from chitosan and dimer acid into; wherein the weight ratio of chitosan and dimer acid is 1:3‑4. The present invention also provides a preparation method of the above-mentioned chitosan dimer ester amine compound: weigh chitosan and dimer acid in proportion and add them to the reaction kettle respectively, stir and heat to 180-240°C, fully react for 8-12 Hours, during the reaction and after the reaction, the water is decompressed and discharged 3-4 times, which is a chitosan dimer ester amine compound, and this chitosan dimer ester amine compound can be directly used as a high temperature resistant Grease is used. The high-temperature-resistant lubricating grease prepared by the invention has good lubricity, extreme-pressure anti-wear property, anti-rust property and biodegradability.

Description

technical field [0001] The invention belongs to the technical field of lubricants, and in particular relates to a high-temperature-resistant lubricant and a preparation method thereof. Background technique [0002] The traditional grease processing technology is: add animal and vegetable oil or fatty acid to inorganic base (such as sodium hydroxide, calcium hydroxide, lithium hydroxide, aluminum hydroxide, barium hydroxide, etc.) to prepare metal soap as thickener or use organic or Inorganic thickener, which is thickened by adding mineral oil or synthetic oil, is mainly to store mineral oil or synthetic oil in the framework of thickener, and store it in the thickener under the action of motion pressure and temperature. The oil in the chemical agent escapes to act as a lubricant, and exhibits paste-like physical properties under normal temperature and pressure. Under some extreme conditions such as high temperature and high pressure, because the oil in the frame escapes too ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M159/12C10M165/00C10M167/00C08B37/08C10N50/10C10N30/06C10N30/08
Inventor 张乃庆吴启东蒋宁
Owner SHANGHAI JINZHAO ENERGY SAVING TECH
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