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High-temperature-resistant extreme pressure type lubricating grease composition and preparation method

A lubricating grease composition and high-temperature-resistant technology, applied in the field of lubricating grease, can solve the problems such as the absence of alkaline calcium naphthenate lubricating grease

Active Publication Date: 2013-02-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no literature report on the preparation of lubricating grease by using basic calcium naphthenate as the main raw material

Method used

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  • High-temperature-resistant extreme pressure type lubricating grease composition and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 140g of high-basic calcium naphthenate with a base value of 410mgKOH / g and 60g of high-basic calcium sulfonate with a base value of 400mgKOH / g into 100g of mineral oil, stir and heat to 50-60°C, and add 10g of n-butyl Alcohol and 30g of water, continue to heat up and stir to 80-90°C, add 20g of acetic acid, keep the temperature for 40min, and the material becomes thicker, with an infrared detection of 874cm -1 the absorption peak. Continue to stir and heat up to drain water, add 120g of mineral oil after heating to 200°C. Then, further stir and heat to 225-235°C, the material gradually thickens, and after constant temperature for 5-10 minutes, cool down and homogenize to obtain the finished lubricating grease. The mass percentage composition of lubricating grease is: high alkali value calcium naphthenate 33.3%, high alkali value calcium sulfonate 14.3%, and base oil 52.4%. The properties of the prepared grease are listed in Table 1.

Embodiment 2

[0028] Add 160g of high-basic calcium naphthenate with a base value of 420mgKOH / g and 40g of high-basic calcium sulfonate with a base value of 380mgKOH / g into 100g of mineral oil, heat and stir to 85-95°C, add 25g of water and 24g Acetic acid, after slow stirring, the material gradually thickens. After constant temperature for 60 minutes, the infrared detection has 875cm -1 the absorption peak. Continue to stir and raise the temperature to drain water, add 90g of mineral oil after heating to 170-180°C. Then, further stir and heat to 225-235°C, the material gradually thickens, and after constant temperature for 10-15 minutes, cool down and homogenize to obtain the finished lubricating grease. The mass percentage composition of lubricating grease is: 41.0% of high alkali value calcium naphthenate, 10.3% of high alkali value calcium sulfonate, and 48.7% of base oil. The properties of the prepared grease are listed in Table 1.

Embodiment 3

[0030] Add 150g of high-basic calcium naphthenate with a base value of 310mgKOH / g and 50g of high-basic calcium sulfonate with a base value of 410mgKOH / g into 80g of olefin synthetic oil, stir and heat up to 70-80°C, then add 15g of iso Propanol, 20g water, 35g dodecylbenzenesulfonic acid, continue to heat to 90 ~ 100 ℃, the material gradually thickens, after constant temperature for 70min, infrared detection has 875cm -1 the absorption peak. Continue to stir and raise the temperature to drain water, add 80g of olefin synthetic oil after heating to 190°C. Then, further stir and heat to 230-240°C, the material gradually thickens, and after constant temperature for 20-30 minutes, cool down and homogenize to obtain the finished lubricating grease. The mass percentage composition of lubricating grease is: high alkali value calcium naphthenate 41.7%, high alkali value calcium sulfonate 13.9%, and base oil 44.4%. The properties of the prepared grease are listed in Table 1.

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Abstract

The invention relates to a high-temperature-resistant extreme pressure type lubricating grease composition and a preparation method of the high-temperature-resistant extreme pressure type lubricating grease composition. The preparation method comprises steps as follows: mixing high-base-value calcium naphthenate, high-base-value sulfoacid calcium, and 35 to 65% of base oil; agitating; then adding a transforming agent; heating to reach 75 to 105 DEG C; maintaining the temperature for 40 to 120 minutes until the materials are thick; continuously heating the material until the temperature reaches more than 200 DEG C; removing the water completely, wherein the rest base oil is added during heating; continuously heating the materials until the temperature reaches 220 to 240 DEG C; agitating for 5 to 30 minutes at constant temperature until the materials are thick; and cooling and homogenizing to obtain the product as requirements. The lubricating grease prepared by the preparation method is high in comprehensive performance, excellent in high-temperature resistance, and high in extreme-pressure wear resistance, and can be used for lubricating high-temperature equipment with high load; and the requirements on use in high-temperature and high-load lubricating situations in the ferrous metallurgy industry can be met.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, and in particular relates to a high-temperature and extreme-pressure-resistant composition thickened into grease by using basic calcium naphthenate as a main raw material. Background technique [0002] The present invention relates to a new lubricating grease composition which adopts basic calcium naphthenate as the main raw material to thicken into grease. It does not need to add additives, and the base grease itself has outstanding high temperature resistance and excellent extreme pressure and anti-wear properties, etc. . [0003] The existing high-performance product composite calcium sulfonate-based lubricating grease uses basic calcium sulfonate as the main raw material, and the main raw material of the present invention is basic calcium naphthenate, and the content of basic calcium sulfonate is relatively small. Other high temperature resistant greases such as polyurea grease, l...

Claims

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Application Information

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IPC IPC(8): C10M121/04C10M169/06C10N30/04
Inventor 董禄虎李纪委栗志彬刘庆廉高艳青吴宝杰
Owner CHINA PETROLEUM & CHEM CORP
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