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High-temperature environment-friendly lubricating grease and preparation method thereof

A technology of lubricating grease and grease composition, which is applied in the field of lubricating grease, can solve the problems of not being able to maintain the lubricating effect for a long time, equipment downtime, manpower, waste, etc., and achieve good degradable performance, good lubricity, and good friction resistance Effect

Pending Publication Date: 2020-04-21
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 grease is required, resulting in equipment shutdown and manpower waste

Method used

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  • High-temperature environment-friendly lubricating grease and preparation method thereof
  • High-temperature environment-friendly lubricating grease and preparation method thereof
  • High-temperature environment-friendly lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1: Weigh 1000g of ricinoleic acid, 800g of stearyl alcohol, 100g of isopropanolamine, and 50g of boric acid into the reaction kettle together, heat to 100°C and stir evenly.

[0037] Step 2: Slowly add 50g of phosphorus pentoxide and stir for 60 minutes, then use the heat of reaction to heat to 180°C at the same time, remove the water generated by the reaction in time, keep the pressure in the kettle not exceeding 200mmHg, and fully react for 5 hours, which is a A grease composition.

[0038] The above-mentioned grease composition can be used as a grease as it is.

Embodiment 2

[0040] Step 1: Weigh 1000g of ricinoleic acid, 500g of stearyl alcohol, 80g of isopropanolamine and 30g of boric acid into the reaction kettle together, heat to 100°C and stir evenly.

[0041] Step 2: Slowly add 30g of phosphorus pentoxide, stir and react for 30 minutes, use the heat of reaction, heat to 150°C at the same time, remove the water generated by the reaction in time, keep the pressure in the kettle not exceeding 200mmHg, and fully react for 6 hours, which is a A grease composition.

[0042] Weigh 500g of the grease composition prepared above, 500g of polysucrose decanoate, 5g of antioxidant (Irganox L57) and heat and stir to about 100°C. After stirring for 1 hour, place it in a homogenization device for homogenization treatment 1 Hours or so, that is, a high-temperature environment-friendly grease.

[0043] The preparation method of above-mentioned polysucrose decanoate:

[0044] Step 1: Add 342.3g (1mol) of sucrose, 139.28g (1.2mol) of maleic acid, 1033.56g (6mo...

Embodiment 3

[0047] Step 1: Weigh 1000g of ricinoleic acid, 600g of stearyl alcohol, 90g of isopropanolamine, and 40g of boric acid into the reaction kettle together, heat to 100°C and stir evenly.

[0048] Step 2: Slowly add 40g of phosphorus pentoxide, stir and react for 40 minutes, heat to 170°C, remove the water generated by the reaction in time, keep the pressure in the kettle not exceeding 200mmHg, and fully react for 5 hours, which is a grease composition .

[0049]Weigh 400g of the above-prepared grease composition, 600g of polysucrose laurate, and 10g of antioxidant (Irganox L01) and heat and stir to about 100°C. After stirring for 2 hours, place it in a homogenization device for homogenization treatment 1 Hours or so, that is, a high-temperature environment-friendly grease.

[0050] The preparation method of above-mentioned polysucrose laurate:

[0051] Step 1: Add 342.3g (1mol) of sucrose, 116.07g (1mol) of fumaric acid, 900.96g (3mol) of lauric acid, and 2g of lanthanum oxide...

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Abstract

The invention provides a lubricating grease composition which is characterized by being prepared from the following components (by weight): 100 parts of ricinoleic acid, 50-80 parts of stearyl alcohol, 8-10 parts of isopropanolamine, 3-5 parts of boric acid, and 3-5 parts of phosphorus pentoxide. The invention also provides high-temperature environment-friendly lubricating grease which is characterized by being prepared from the following components (by weight): 40-60% of the lubricating grease composition and 40-60% of polysucrose fatty acid ester. The lubricating grease composition preparedby adopting the preparation method is a B-P-N type friction modifier and an antirust agent, is an excellent thickening agent, is good in degradability, and can ensure that the paste physical form of the lubricating grease is good. The polysucrose fatty acid ester has good lubricity, excellent biodegradability and good friction resistance, and can completely or partially replace S and Cl extreme-pressure anti-wear agents which have adverse effects on the environment.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, and in particular relates to a high-temperature environment-friendly lubricating grease 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 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10N30/06C10N30/12C10N40/02C10N50/10
CPCC10M169/06C10M2207/281C10M2215/08C10M2223/04C10M2223/08C10M2223/086C10M2227/06C10M2227/061
Inventor 张乃庆吴启东蒋宁丁金波
Owner SHANGHAI JINZHAO ENERGY SAVING TECH
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