Lithium-base lubricating grease composition with low-pressure oil-separating and low-storage oil-separating performance

A lithium-based grease and composition technology, applied in lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of failure, unsatisfactory oil separation performance, low use temperature, etc., and achieve oil separation performance in storage The effect of excellent, good shear stability, good high temperature performance

A lithium-based grease and composition technology, applied in lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of failure, unsatisfactory oil separation performance, low use temperature, etc., and achieve oil separation performance in storage The effect of excellent, good shear stability, good high temperature performance

CN101240216AInactive Publication Date: 2008-08-13ORDNANCE TECH RES INST OF THE GENERAL ARMAMENT DEPT PLA
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] With 560g12-hydroxystearic acid, 4000g mineral base oil (100 ℃ kinematic viscosity is 14.00mm 2 / s) into a 10-liter kettle, heat up to 70-99°C, stir for 20 minutes to dissolve 12-hydroxystearic acid, then dissolve and add 84g of lithium hydroxide, react for 1 hour, heat up and dehydrate to a true solution after the reaction state, add the remaining part of the base oil 5000g, cool, then add the additive diphenylamine 50g, solid filler bentonite 50g, graphite 160g, silicon dioxide 200g, other additives T202 (200g), T405 (200g), T321 (100g), and finally After three-axis roller grinding and homogenization into grease, a lithium-based lubricating grease composition with low pressure oil separation and low storage oil separation performance can be obtained. The performance indexes of the prepared lithium-based grease composition are shown in Table 1.

Embodiment 2

[0019] With 400g12-hydroxystearic acid, 4000g mineral base oil (100 ℃ kinematic viscosity is 14.00mm 2 / s) into a 10-liter kettle, heat up to 70-99°C, stir for 20 minutes to dissolve 12-hydroxystearic acid, then dissolve and add 60g of lithium hydroxide, react for 1 hour, heat up and dehydrate to a true solution after the reaction state, add the remaining part of base oil 5000g, cool, then add additives diphenylamine 50g, solid filler bentonite 160g, silica (A) 200g, other additives T202 (200g), TCP (200g), and finally grind by three-axis roller Homogenizing into grease means to prepare a lithium-based lubricating grease composition with low pressure oil separation and low storage oil separation performance. The performance indexes of the prepared lithium-based grease composition are shown in Table 1.

[0020] Table 1

[0021] Pilot projects

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PUM

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Abstract

The invention relates to a lithium base grease constituent which has low-pressure oil separation performance and low storage oil separation performance, and comprises base oil, thickening agent, solid fillers and additive, wherein the thickening agent are the metal salts which were produced through the reaction between one or more an acid of the C12 to C24 fatty acid and the lithium hydroxide; the grease constituent contents one or more solid packing which come from bentonite, graphite, molybdenum disulfide and silicon dioxide, and the solid packing is in the amount of 0.1 to 15wt percent of the grease constituent. The lithium base grease constituent is compared with the existing lithium base grease: the lithium base grease constituent Not only has good low-pressure oil separation performance and low storage oil separation performance, but also has good shear stability, colloidal stability, good performance and good high-temperature extreme pressure, anti-wear performance, and can be widely used in Bearings, gears and other industrial equipments which have high demands of oil separation performance.

Description

technical field [0001] The invention relates to a lubricant material, in particular to a lithium-based lubricating grease composition with low pressure oil separation and low storage oil separation properties. Background technique [0002] Lithium-based grease is the most common lubricant product in the world. It has the largest output in the world, the most widely used, shear resistance, and good additive sensitivity, but the use temperature is low (about 180°C); It is prepared by adding a complex agent to the base grease. Through complex production processes, the structure and shape of the thickener are changed, and the service temperature of the lubricant is increased (dropping point 280-330°C). However, the existing lubricant products, whether it is Lithium-based grease or complex lithium-based grease, the performance of pressure oil separation and storage oil separation is not ideal. With the increase of temperature and the extension of storage time...

Claims

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Application Information

Patent Timeline
13 Aug 2008
Publication
CN101240216A
IPC
C10M169/00; C10M117/04; C10M125/30; C10N40/00
Inventors
陈学军; 谭胜