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Composite calcium sulfonate based lubricating grease for open gear as well as preparation method and application thereof

A composite calcium sulfonate-based, composite calcium sulfonate technology, applied in lubricating compositions, petroleum industry, etc., can solve problems such as poor temperature resistance, poor extreme pressure performance, and small sintering load, and achieve excellent extreme pressure resistance The effect of grinding performance

Active Publication Date: 2020-11-20
上海果石实业(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The open gear lubricating grease provided by the invention has the advantages of simple composition and low cost, and also has strong adhesion, excellent lubricity and good oil-saving properties, but the extreme pressure performance is relatively poor, (four-ball method) The sintering load (PD value) is small, only 6100-7000N (622-714kg), the temperature resistance is poor, and the dropping point is 164-173°C

Method used

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  • Composite calcium sulfonate based lubricating grease for open gear as well as preparation method and application thereof
  • Composite calcium sulfonate based lubricating grease for open gear as well as preparation method and application thereof

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preparation example Construction

[0040] The present invention also provides the preparation method of the composite calcium sulfonate-based open gear grease described in the above technical solution, comprising the following steps:

[0041] Mix the composite calcium sulfonate thickener with part of the base oil for phase inversion reaction to obtain the phase inversion reaction product;

[0042] Mixing the phase inversion reaction product, ethylene propylene rubber and the remaining base oil to obtain a mixed material;

[0043] After the mixed material is filtered, firstly cooled, sheared and refluxed and secondly cooled, mixed with diphenylamine, sulfurized olefin, calcium petroleum sulfonate and graphite to obtain the composite calcium sulfonate-based open gear grease.

[0044] The invention mixes the composite calcium sulfonate thickener and part of the base oil for phase inversion reaction to obtain a phase inversion reaction product. In the present invention, the complex calcium sulfonate thickener is ...

Embodiment 1～3

[0060] Press the consumption of raw material in table 1, prepare compound calcium sulfonate base type lubricating grease for open gear, concrete preparation method is as follows:

[0061] (1) Mix 150BS bright stock and polyethylene propylene synthetic oil to obtain base oil;

[0062] (2) isopropanol and part of water are mixed to obtain isopropanol aqueous solution, and the mass ratio of isopropanol and part of water is 3:7;

[0063] Glacial acetic acid is mixed with remaining water to obtain an aqueous solution of glacial acetic acid, and the mass ratio of glacial acetic acid and remaining water is 1:3;

[0064] Add part of the base oil and high alkalinity petroleum calcium sulfonate T106D into the saponification kettle, stir and heat up to 70°C, and the speed is 30rpm, add isopropanol aqueous solution and calcium carbonate, heat up to 75°C while stirring, add glacial acetic acid Aqueous solution, carry out the first phase inversion reaction, after 5 minutes, when the temper...

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Abstract

The invention provides a composite calcium sulfonate based lubricating grease for an open gear as well as a preparation method and application thereof, and belongs to the technical field of lubricating grease preparation. The provided composite calcium sulfonate based lubricating grease comprises the following components in percentage by mass: 67-72% of base oil, 11-15% of a composite calcium sulfonate thickening agent, 4.5-6.0% of an extreme pressure anti-wear additive, 1.5-3% of ethylene-propylene rubber, 0.4-0.5% of diphenylamine and 10-12% of graphite, and the sum of the mass percentages of the components is 100%, wherein the extreme pressure anti-wear additive comprises vulcanized olefin and petroleum calcium sulfonate; the composite calcium sulfonate is prepared from the following raw materials through a phase inversion reaction: high-base-number petroleum calcium sulfonate, isopropanol, calcium carbonate, glacial acetic acid and dodecyl benzene sulfonic acid. The provided composite calcium sulfonate based lubricating grease for an open gear has an excellent extreme pressure property and temperature resistance.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease preparation, and in particular relates to a compound calcium sulfonate-based lubricating grease for open gears and a preparation method and application thereof. Background technique [0002] The machining accuracy of the tooth surface of the open gear is relatively low, the roughness is large, and it is under heavy load and continuous working condition for a long time. In addition, the working environment is relatively harsh, and it is often under the condition of heavy load or impact load, and the gear lubricant is lacking. Sealing protection, dust, impurities, water and other external media can easily pollute the meshing tooth surface, which requires that the open gear lubricant should have excellent anti-friction, anti-wear, anti-pitting, anti-extreme pressure properties, and should also have Low toxicity, odorless, environment-friendly characteristics. [0003] At present, conventi...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M177/00C10N40/04C10N40/34C10N30/06C10N30/08C10N10/04
CPCC10M169/00C10M177/00C10M2201/041C10M2215/064C10M2205/022C10M2205/024C10M2219/022C10M2219/044C10M2219/0466C10M2219/0445C10M2203/1006C10M2205/0225C10M2205/0245
Inventor 曹智鹏蒋和清
Owner 上海果石实业(集团)有限公司
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