Polyurea metal salt composite bearing lubricating grease composition and preparation method thereof

A grease composition and composite bearing technology, applied in the field of grease, can solve the problem of weak extreme pressure and anti-wear performance, and achieve the effects of outstanding high temperature performance, improved extreme pressure and anti-wear performance, and long lubrication cycle

Inactive Publication Date: 2017-03-15
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polyurea grease has excellent high and low temperature performance, anti-oxidation performance, but relatively weak extreme pressure and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1 First add 54 g of diisocyanate in the thickening agent to 445 g of autoclave oil. The autoclave oil is mineral oil. Add 40 g of organic amine to another part of 431 g of autoclave oil. The two reactors are heated to 60°C. , Put the two tanks of materials into the reaction kettle after 10 minutes of constant temperature, stir and heat to 75-80℃, react for 1~1.5h to produce diurea metal salt thickener without fiber crystal structure, and then proceed to diurea metal salt thickening Add 10g of barium dinonylnaphthalenesulfonate, control the temperature at 90~100℃, control the reaction time at 1~2h, slowly increase the temperature to the highest refining temperature of 180℃ to produce the dipolyurea with interlaced tubular fiber structure. Metal salt thickener, control the heating time between 1.5h and 2h, add 10g of antioxidant aromatic amine alkylated diphenylamine when the temperature is raised to 160℃-170℃; after the material is naturally cooled to below 80℃, Add

Example Embodiment

[0031] Example 2 First add 91g of the diisocyanate in the thickening agent to 411g of autoclave oil. The autoclave oil is mineral oil. Add 53g of organic amine to another part of 410g of autoclave oil. The two reactors are heated to 60°C. , Put the two tanks of materials into the reaction kettle after 10 minutes of constant temperature, stir and heat to 75-80℃, react for 1~1.5h to produce diurea metal salt thickener without fiber crystal structure, and then proceed to diurea metal salt thickening Add 10g of barium dinonylnaphthalenesulfonate, control the temperature at 90~100℃, control the reaction time at 1~2h, slowly increase the temperature to the highest refining temperature of 180℃ to produce the dipolyurea with interlaced tubular fiber structure. Metal salt thickener, control the heating time between 1.5h and 2h, during the heating to 160℃-170℃, add 5g of antioxidant aromatic amine alkylated diphenylamine, 2,6-di-tert-butyl- 10g of p-cresol. After the material is naturally

Example Embodiment

[0032] Example 3 First add 54 g of diisocyanate in the thickening agent to 445 g of autoclave oil. The autoclave oil is mineral oil. Add 40 g of organic amine to another part of 431 g of autoclave oil. The two reactors are heated to 60°C. , Put the two tanks of materials into the reaction kettle after 10 minutes of constant temperature, stir and heat to 75-80℃, react for 1~1.5h to produce diurea metal salt thickener without fiber crystal structure, and then proceed to diurea metal salt thickening Add 10g of sodium dinonylnaphthalene sulfonate, control the temperature at 90~100℃, control the reaction time at 1~2h, and slowly raise the temperature to the highest refining temperature 180℃ to produce the dipolyurea with interlaced tubular fiber structure. Metal salt thickener, control the heating time between 1.5h and 2h, add 10g of antioxidant aromatic amine alkylated diphenylamine when the temperature is raised to 160℃-170℃. After the material is naturally cooled to below 80°C, add

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PUM

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Abstract

The invention relates to a polyurea metal salt composite bearing lubricating grease composition and a preparation method thereof. The composition comprises the components by the percentage: 10-20% of a dipolyurea metal salt thickening agent, 75%-85% of base oil, and 1.5-5% of an additive including (a) 0.5-4.0% of an aromatic amine and/or phenol antioxidant and (b) 0.5-2% of a phosphorus-series antiwear agent. With use of polyurea as the thickening agent, the composition has better oxidation resistance, so as to ensure longer lubrication period; at the same time, the composition has outstanding high-temperature performance and relative wide applicable temperature range; due to introduction of metal elements, the extreme pressure antiwear performance of the polyurea lubricating grease is greatly improved, and the polyurea lubricating grease can be applied to an occasion having relatively high requirement on the extreme pressure antiwear performance. Through composite of the metal salt and the polyurea thickening agent, the polyurea lubricating grease product used at a relatively high load environment and having the advantages of excellent extreme pressure antiwear performance and good high and low temperature fluidity, anti-rust performance and antioxidant performance is provided.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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