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Lubricating grease composition and preparation method thereof

A grease composition and composition technology, applied in lubricating compositions, petroleum industry, etc., can solve problems such as poor extreme pressure and anti-wear properties, high resistivity, difficulty in adapting to the lubrication requirements of conductive precision instruments, etc., and achieve excellent electrical conductivity , the effect of meeting the lubrication requirements

Active Publication Date: 2021-10-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the conductive grease of the prior art, there are still high resistivity, poor extreme pressure and anti-wear properties, and it is difficult to meet the lubrication requirements of conductive precision instruments, and further improvement is still needed

Method used

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  • Lubricating grease composition and preparation method thereof
  • Lubricating grease composition and preparation method thereof
  • Lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of bentonite grease composition:

[0040] Raw material components: 150BS lubricating base oil 536kg (viscosity of 29mm at 100°C 2 / s); Organobentonite 240kg; Acetone 40kg; Tantalum sulfide 4kg; N-phenyl-α-naphthylamine 4kg; Potassium triborate 8kg; Zinc dibutyldithiocarbamate 8kg;

[0041]Add 400kg of lubricating base oil into the grease making kettle and stir, slowly add 240kg of organic bentonite to it, stir to mix it evenly with the lubricating base oil; raise the temperature to 40°C, add 40kg of acetone, and stir for 60min until the grease structure is formed; raise the temperature to 60 ℃, refining for 20 minutes; add the remaining lubricating base oil, stir to cool down, mix well and then add 4kg tantalum sulfide, 4kg N-phenyl-α-naphthylamine, 8kg potassium triborate, 8kg zinc dibutyldithiocarbamate , Stir evenly; Grind 2-3 times through a three-roller machine to form fat. The product performance is shown in Table 2.

[0042] Calculated according to...

Embodiment 2

[0044] Preparation of lithium complex grease:

[0045] Raw material composition: PAO10 (20%) and PAO40 (80%) mixed oil 600kg, (100 ℃ viscosity is 30mm 2 / s); Lithium hydroxide monohydrate 25.1kg; 12-hydroxystearic acid 87.8kg; Sebacic acid 29.3kg; β-naphthylamine 8kg; Potassium metaborate 24kg; Tantalum 24kg;

[0046] First add 450kg of base oil, 87.8kg of 12-hydroxystearic acid and 29.3kg of sebacic acid into the fat-making kettle, heat and stir, and add lithium hydroxide aqueous solution (containing 25.10kg of lithium hydroxide, 50kg of water ) for saponification reaction for 1 hour, raised the temperature to 200°C for high-temperature refining for 10 minutes; added the remaining base oil and cooled down to 105°C, then added 8kg β-naphthylamine, 24kg potassium metaborate, 24kg antimony diamyl dithiocarbamate, 24kg vulcanized Tantalum, stirred to cool down to room temperature, and ground twice by a three-roll mill to form fat. The product performance is shown in Table 2. ...

Embodiment 3

[0049] Preparation of lithium complex grease:

[0050] Raw material components: 500SN base oil 608kg (viscosity at 100°C is 10mm 2 12-hydroxystearic acid 57kg; Azelaic acid 35kg; Diphenylamine 12kg; Sodium metaborate 40kg; Diamyl zinc dithiocarbamate 40kg; Tantalum sulfide 4kg;

[0051] First, add 480kg of base oil, 57kg of 12-hydroxystearic acid and 35kg of azelaic acid into the fat-making kettle, heat and stir, and raise the temperature to 95°C, add lithium hydroxide aqueous solution (containing 24.6kg of lithium hydroxide and 25kg of water) to carry out Saponification reaction for 0.5h, heat up to 190°C for high-temperature refining for 5min; add the remaining base oil and cool down to 100°C, add 12kg of diphenylamine, 40kg of sodium metaborate, 40kg of zinc diamyl dithiocarbamate, 4kg of tantalum sulfide, Stir to cool down to room temperature, and grind twice through a three-roll mill to form fat. The product performance is shown in Table 2.

[0052] Calculated accordin...

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Abstract

The invention provides a lubricating grease composition and a preparation method thereof. Based on the total weight of the lubricating grease composition, the lubricating grease composition comprises the following components: 60%-95% of lubricating base oil, 3%-35% of a thickening agent, 0.1%-15% of tantalum sulfide, 0-10% of an antioxidant, 0-10% of an extreme pressure agent and 0-10% of a multi-effect additive. The lubricating grease composition disclosed by the invention has excellent conductivity, extreme pressure anti-wear property, oxidation resistance, corrosion resistance and rust resistance, and can meet the lubricating requirement under a conductive working condition.

Description

technical field [0001] The invention relates to a lubricating grease composition, in particular to a conductive lubricating grease composition and a preparation method thereof. Background technique [0002] The semi-fluid to solid lubricants prepared by thickening the base oil with a thickener are called greases. Grease has a wide range of application fields. It can be used for various mechanical friction parts, and also has the function of protection and sealing. It almost covers the industrial field, agricultural field, transportation industry, aerospace industry, electronic information industry and national defense equipment. Among petroleum products, although the output of lubricating grease accounts for a small proportion, there are many varieties, and it is an indispensable and important material for all sectors of the national economy. [0003] With the advancement of science and technology and the rapid development of industry, the quality and process requirements o...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M177/00C10N30/06C10N30/10C10N30/12C10N50/10
CPCC10M169/00C10M177/00C10M2201/065C10M2201/1036C10M2201/145C10M2207/08C10M2215/065C10M2201/087C10M2219/068C10M2207/128C10M2207/127C10M2215/064C10M2207/32C10M2205/0206C10M2205/163C10M2207/401C10M2203/1065C10M2207/402
Inventor 郑会王春璐庄敏阳刘欣阳刘显秋陈靖何懿峰孙洪伟
Owner CHINA PETROLEUM & CHEM CORP
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