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Composite urea-aluminum base grease composition and preparation method thereof

A lubricating grease composition and the technology of the composition are applied in the direction of lubricating composition, petroleum industry, etc., which can solve the problems of loss of composite aluminum-based grease, poor shear resistance, high temperature hardening of polyurea grease, etc., so as to enhance the thickening ability , Improve the effect of film formation and extreme pressure wear resistance

Inactive Publication Date: 2018-11-20
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polyurea grease and composite aluminum-based grease are commonly used high-temperature greases. Both have their own outstanding performance characteristics and play an important role in related application fields. At the same time, they both have some unsolvable performances of their own. Disadvantages: For example, polyurea grease has problems such as high-temperature hardening and poor shear resistance; composite aluminum-based grease has problems such as high-temperature softening loss and poor adhesion. These performance shortcomings will also limit their application in some special fields

Method used

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  • Composite urea-aluminum base grease composition and preparation method thereof
  • Composite urea-aluminum base grease composition and preparation method thereof
  • Composite urea-aluminum base grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]

[0044] Mix 350g of HVI 150BS and 30g of MDI and heat to 60°C, at the same time mix 15g of octylamine, 5g of o-phenylenediamine and 350g of HVI150BS and heat to 80°C, then mix and react the above two solutions for 30 minutes. Add 6g of benzoic acid and 14g of stearic acid into the mixing system, mix and heat to 80°C, then add 10g of aluminum isopropoxide trimer to carry out complex reaction, then raise the temperature of all materials to 180°C, and add 220g of HVI 150BS. When the temperature of the system was lowered to 70°C, 5 g of dodecenylsuccinic acid was added, and finally it was ground three times with a three-roll machine to form a fat. Performance see Table 1

Embodiment 2

[0046]

[0047] Mix 420g of HVI 500SN and 70g of TDI and heat to 70°C. At the same time, mix 97g of hexadecylamine, 13g of ethylenediamine and 420g of HVI 500SN and heat to 90°C, then mix and react the above two solutions for 60 minutes. Add 24g of benzoic acid and 57g of stearic acid into the mixing system, mix and heat to 90°C, then add 39g of aluminum isopropoxide to carry out composite reaction, then raise the temperature of all materials to 200°C, and add 60g of HVI 500SN. When the temperature of the system was lowered to 80°C, 12 g of barium dinonylnaphthalenesulfonate was added, and finally it was ground three times with a three-roll machine to form a fat. Performance see table 1

Embodiment 3

[0049]

[0050] Mix 630g of HVI 500SN and 55g of MDI and heat to 65°C. At the same time, mix 35g of aniline, 47g of octadecylamine, 43g of 1,4-cyclohexanediamine and 630g of HVI 150BS and heat to 85°C, then mix and react the above two solutions 45 minutes. Add 25g of benzoic acid and 59g of stearic acid into the mixing system, mix and heat to 85°C, then add 21g of aluminum isopropoxide trimer and 21g of aluminum isopropoxide to carry out composite reaction, and then raise the temperature of all materials to 190°C, Add HVI 500SN234g. When the temperature of the system was lowered to 75°C, 6.8 g of dodecenylsuccinic acid and 6.7 g of barium dinonylnaphthalene sulfonate were added, and finally it was ground three times with a three-roll machine to form a fat. Performance see table 1

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Abstract

The invention aims to provide a composite urea-aluminum base grease composition and a preparation method thereof. The composite urea-aluminum base grease composition comprises the following components: 5-15% of a polyurea thickening agent, 3-10% of a composite aluminum thickening agent, 75-92% of base oil and 0.5-1% of an additional antirust agent, wherein organic amine and isocyanate react to prepare the polyurea thickening agent, benzoic acid, stearic acid and organic aluminum react to prepare composite aluminum soap, then a composite reaction is carried out, the temperature is raised, the antirust agent is added after cooling, and then the composite aluminum soap is ground into grease. In addition to the good water resistance and pumping performance common to polyurea and composite aluminum-based lubricating grease, the composite urea-aluminum base grease which is prepared according to the method provided in the invention and relies on composite penetration of thickening agent fibers can enhance thickening capability and adhesion to metals, and improve film forming property and extreme pressure wear resistance, and has good colloid stability at a high temperature. The compositeurea-aluminum base grease composition is suitable for use under harsh conditions with high temperature, heavy load, humidity, and the like.

Description

technical field [0001] The invention relates to a lubricant, specifically a composite urea-aluminum base grease composition and a preparation method. Background technique [0002] Polyurea grease is a new type of grease product with comprehensive performance, which is prepared from mineral oil or synthetic oil thickened with organic urea. According to the number of urea group, it can be divided into monourea, diurea, triurea, tetraurea, polyurea and so on. Diurea is the earliest developed variety with the most products, and has been widely used in industry. Based on the reaction principle of "double amine coupling and monoamine end capping", tetraurea is a recognized new type of polyurea grease. Due to its strong thickening ability and outstanding high temperature performance, it has developed rapidly. Since polyurea grease does not contain metal ions, it avoids the catalytic oxidation of base oil, so polyurea grease has good thermal stability, oxidation stability, water r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N50/10C10N30/06C10N30/08
CPCC10M169/00C10M177/00C10M2207/12C10M2207/1265C10M2207/1415C10M2217/0456C10M2219/044C10M2219/0466C10N2010/04C10N2030/06C10N2030/08C10N2050/10C10N2010/06
Inventor 栗志彬刘建龙申明主吴宝杰董禄虎
Owner CHINA PETROLEUM & CHEM CORP
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