Mining grease composition and preparation method thereof

A technology of composition and lubricating grease, which is applied in the field of lubricating grease to achieve the effects of stable product quality, good high-load performance, and energy saving

Active Publication Date: 2013-01-30
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And CN101157878A adds the ethylene-propylene copolymer in the previous step in the traditional lithium-based grease, and it is only used as a tackifier compound

Method used

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  • Mining grease composition and preparation method thereof
  • Mining grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Base oil: 74.2%;

[0042] Thickener: 18.1%;

[0043] Additives: 7.7%;

[0044] 12-Hydroxystearic acid: 14.1

[0045] Boric acid: 1.3

[0046] Sebacic acid: 2.7

[0047] Ethylene-propylene copolymer: 3.8%;

[0048] Extreme pressure agent: 1.9%;

[0049] Rust inhibitor: 1.0%;

[0050] Antiwear agent: 1.0%.

[0051]Add 14.1% by mass of 12-hydroxystearic acid, 2.7% by mass of sebacic acid and 3.8% by mass of ethylene-propylene copolymer to 74.2% by mass of base oil, mix and heat to 60- 90°C, add lithium hydroxide monohydrate and calcium hydroxide with 1.3% boric acid in mass parts for saponification and compounding for 1.5-2 hours; heat up to 185-190°C in 2 hours, keep this temperature for 1.5 hours; continue to heat up to 220-240 ℃, then naturally lower the temperature to below 120°C, and then add extreme pressure agents (sulfurized olefin cottonseed oil, vanlube829 and vanlube855) with a mass fraction of 1.9%, fatty acid amide with a mass fraction of 1.0%, and tri...

Embodiment 2

[0056] Base oil: 52%;

[0057] Thickener: 25%;

[0058] Additives: 23%;

[0059] 12-Hydroxystearic acid: 20.3%

[0060] Boric acid: 1.3%

[0061] Sebacic acid: 3.4%

[0062] Ethylene-propylene copolymer: 8.0%;

[0063] Extreme pressure agent: 5.0%;

[0064] Rust inhibitor: 5.0%;

[0065] Antiwear agent: 5.0%.

[0066] Add 20.3% by mass of 12-hydroxystearic acid, 3.4% by mass of sebacic acid and 8.0% by mass of ethylene-propylene copolymer to 52% by mass of base oil, mix and heat to 60- 90°C, add lithium hydroxide monohydrate and calcium hydroxide with 1.3% boric acid in mass parts for saponification and compounding for 1.5-2 hours; heat up to 185-190°C in 2 hours, keep this temperature for 1.5 hours; continue to heat up to 220-240 ℃, then naturally lower the temperature to below 120°C, and then add extreme pressure agents (sulfurized olefin cottonseed oil, vanlube829 and vanlube855) with a mass fraction of 5.0%, fatty acid amide with a mass fraction of 5.0%, and triphe...

Embodiment 3

[0068] Base oil: 86%;

[0069] Thickener: 8%;

[0070] Additives: 6%;

[0071] 12-Hydroxystearic acid: 5.9%

[0072] Boric acid: 0.6%

[0073] Sebacic acid: 1.5%

[0074] Ethylene-propylene copolymer: 3.0%;

[0075] Extreme pressure agent: 1.0%;

[0076] Rust inhibitor: 1.0%;

[0077] Antiwear agent: 1.0%.

[0078] Add 5.9% by mass of 12-hydroxystearic acid, 1.5% by mass of sebacic acid and 3.0% by mass of ethylene-propylene copolymer to 86% by mass of base oil, mix and heat to 60- 90°C, add lithium hydroxide monohydrate and calcium hydroxide with 0.6% boric acid in mass parts for saponification and compounding for 1.5-2 hours; heat up to 185-190°C in 2 hours, keep this temperature for 1.5 hours; continue to heat up to 220-240 ℃, then naturally lower the temperature to below 120°C, add extreme pressure agents (sulfurized olefin cottonseed oil, vanlube829 and vanlube855) in parts by mass of 1.0%, succinimide in parts by mass of 1.0% and phosphorothioate in parts by mass...

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Abstract

The invention provides a mining grease composition and a preparation method thereof. A thickening agent consists of products of reaction of 12-hydroxystearic acid, boric acid and sebacic acid with aqueous solutions of lithium hydroxide and calcium hydroxide; and an additive comprises an ethylene-propylene copolymer, an extreme pressure agent, an antirust agent and an antiwear agent. The preparation method comprises the following steps of: adding 12-hydroxystearic acid, sebacic acid and ethylene-propylene copolymer into base oil, mixing, heating to 60 to 90 DEG C, adding lithium hydroxide monohydrate containing boric acid and calcium hydroxide to carry out saponification and compounding for 1.5 to 2 hours; heating to 185 to 190 DEG C in a period of 2 hours, and keeping the temperature for 1.5 hours; and continuing to heat to 220 to 240 DEG C, naturally cooling to below 120 DEG C, adding the extreme pressure agent, the antirust agent and the antiwear agent and carrying out posttreatment to obtain the product needed. The grease has high high-load performance, so the wear is low under a high load (PD is more than 315kg).The grease also has highly improved water resistance and adhesive strength.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a composition and a preparation method of mine lubricating grease. Background technique [0002] Since the United States Unit-Rig Company and G.E Company jointly developed the world's first mining electric wheel dump truck with a loading capacity of 77t in 1963, after more than 30 years of continuous improvement and the adoption of a large number of new technologies, new materials and new processes , Heavy-duty mining electric wheel dump trucks have matured as a new variety of vehicles, and their loading quality has risen from 77t per vehicle to the current maximum of about 320 tons. Through literature and market research, it is found that the weight of mining vehicles is increasing. From the development trend of mining vehicles, it can be seen that heavy load and large-scale mining vehicles are a theme in the development of mining vehicles. [0003] Grease is used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M121/04C10M167/00C10N30/06C10N30/12
Inventor 李勇吴宝杰高艳青郭振俊高思嘉刘志颖李倬张晓凯李栋
Owner CHINA PETROLEUM & CHEM CORP
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