8-uril grease lubricant and its preparation method

A technology of lubricating grease and lubricating oil base oil, which is applied in the direction of lubricating composition, petroleum industry, thickener, etc., can solve the problem of few reports of octaurea lubricating grease, and achieve the effect of good extreme pressure performance

Active Publication Date: 2012-04-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the reports of the prior art mainly focus on the preparatio

Method used

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  • 8-uril grease lubricant and its preparation method
  • 8-uril grease lubricant and its preparation method
  • 8-uril grease lubricant and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1

[0039] First, about 145 grams of 500SN (with a kinematic viscosity of 92-98 cSt at 40°C) and 37.8 grams of MDI are mixed and heated to 50°C, slowly added 9.08 grams of ethylenediamine, heated to 80°C, reacted for 30min, slowly added 4.54 grams of ethylenediamine , A constant temperature of 80 ℃, reaction for 30 minutes, 145 grams of base oil and 20.37 grams of octadecylamine are mixed and heated to 60 ℃ and added to the above mixture, kept at 80 ℃, reacted for 30 minutes, continue to heat up to 210 ℃, then add about 145 grams of The base oil can be cooled to about 100°C for grinding.

Example Embodiment

[0040] Example 2

[0041] Firstly, 146.67 grams of 150BS (with a kinematic viscosity of 29 cSt at 100°C) and 23.77 grams of TDI were mixed and heated to 40°C, 5.57 grams of propylene diamine were slowly added, the temperature was raised to 70°C, and the reaction time was 30 minutes. Slowly added 2.79 grams of propylene diamine at a constant temperature 70°C, react for 30 minutes, mix 146.67 grams of base oil with 27.88 grams of dodecylamine and heat to 50°C and add to the above mixture, keep the temperature at 70°C, react for 30 minutes, continue to heat up to 200°C, then add about 146.67 grams of base oil Just cool to about 80°C and grind.

Example Embodiment

[0042] Example 3

[0043] First, about 148.33 grams of PAO10 synthetic oil (kinematic viscosity at 100°C: 9.8-10.2 cSt) and 31.27 grams of HDI are mixed and heated to 45°C, 10.05 grams of p-phenylenediamine are slowly added, and the temperature is raised to 75°C, reacted for 30 minutes, and 5.03 is slowly added Gram p-phenylenediamine, constant temperature 75 ℃, reaction for 30 minutes, 148.33 grams of base oil and 8.66 grams of aniline are mixed and heated to 55 ℃ and added to the above mixture, constant temperature 75 ℃, react for 30 minutes, continue to heat up to 205 ℃, then add 148.33 The base oil of about gram can be cooled to about 90℃ for grinding.

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Abstract

An 8-uril grease lubricant contains, by weight, 70-90% of lubricating base oil and 10-30% of an 8-uril densifier calculated according to the total weight of the grease lubricant being 100%. The preparation method of the 8-uril grease lubricant provided by the invention comprises a step of respectively performing reactions between diisocyanate and diamines and between diisocyanate and monoamines to obtain the 8-uril grease lubricant. In comparison with a 2-uril grease lubricant, the 8-uril grease lubricant has higher dropping point, better extreme pressure performance, colloid stability and shearing stability.

Description

technical field [0001] The invention relates to an octaurea lubricating grease and a preparation method thereof Background technique [0002] Grease is composed of grease, thickener and additives. Thickener is an indispensable component in grease, and its properties are one of the main factors that directly affect the performance of grease. Polyurea thickener and polyurea grease are developed to meet the more stringent requirements for lubricating materials due to the rapid development of modern industrial technology and equipment. [0003] With the rapid development of modern industry, the requirements for lubricating materials are becoming more and more stringent. Mechanical equipment operating continuously under high load, high speed and high temperature, the high temperature range of lubricating grease reaches 175-235 ℃ or higher, and requires a long Long service life of lubrication to prolong grease change cycle, improve production efficiency and reduce production cost...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M119/24C10M177/00C10N50/10C10N30/06
Inventor 刘磊孙洪伟何懿峰段庆华
Owner CHINA PETROLEUM & CHEM CORP
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