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Photo-stabilization type lubricating grease and preparation method thereof

A lubricating grease and light-stabilizing technology, applied in the field of lubricating grease, can solve the problems of reduced structural strength, complex production process formula, and reduced consistency, and achieve the effect of ensuring light stability, high cost performance, and obvious colloidal stability characteristics

Inactive Publication Date: 2015-03-11
无锡中石油润滑脂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Lubricating oil belongs to Newtonian fluid, and lubricating grease is different from lubricating oil, which is thickened lubricating oil. It needs thickener to react in base oil, refine and disperse to get it. It is a typical non-Newtonian fluid. The production of lubricating grease The process formula is much more complicated than that of lubricating oil, which also makes the lubricating grease have a special three-dimensional network fiber structure, has obvious colloidal stability characteristics, and has a certain shear resistance. The addition of some additives will affect the arrangement and distribution of its structure. Serious It can cause it to lose the characteristics that the grease itself should have. The specific performance is that the consistency of the product is reduced and the structural strength is reduced.

Method used

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  • Photo-stabilization type lubricating grease and preparation method thereof
  • Photo-stabilization type lubricating grease and preparation method thereof
  • Photo-stabilization type lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A light-stable lubricating grease is prepared according to the following steps:

[0031] (1) Put 35 parts of Class I mineral oil (kinematic viscosity of 120cst at 40°C) into the reactor, heat to 70°C and put in 18.2 parts of lithium lauryl stearate soap, stir and heat up to 170°C, add 25 parts of I Thickened with mineral oil (40℃ kinematic viscosity is 120cst);

[0032] (2) Heat up to the highest temperature of 210°C, add 20 parts of polyalphaolefin synthetic base oil (40°C kinematic viscosity is 100cst) after 2 minutes of heat preservation, keep heat at 180°C for 10 minutes, then transfer to the second reaction kettle, and cool to 135± Grind twice in a grinder at 5°C to obtain base grease;

[0033] (3) Cool the base grease obtained in step (2) to 80°C, add 0.5 parts of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 0.4 parts of benzotriazole , 0.3 parts of barium dinonylnaphthalene sulfonate, 0.6 parts of diphenylamine, after being ground twice by a grinder, filtered a...

Embodiment 2

[0035] A light-stable lubricating grease is prepared according to the following steps:

[0036] (1) Put 40 parts of type II mineral oil (kinematic viscosity of 110cst at 40°C) into the reaction kettle, heat to 60°C and put in 12 parts of lithium dodecyl hydroxystearate soap, stir and heat up to 180°C, add 30 Part II type mineral oil (40 ℃ kinematic viscosity is 110cst) for thickening;

[0037] (2) Heat up to the highest temperature of 212°C, add 15 parts of ester base oil (kinematic viscosity at 40°C is 80cst) after 2 minutes of heat preservation, heat at 182°C for 8 minutes, then transfer to the second reaction kettle, and cool to 135±5°C Reflow shearing to obtain base grease;

[0038] (3) Cool the base grease obtained in step (2) to 70°C, and add 0.01 parts of 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorinated benzene Triazole, 0.3 part of 2,6-di-tert-butyl-p-cresol, and 0.2 part of zinc naphthenate are refluxed and sheared by a reflux pump, filtered and packaged t...

Embodiment 3

[0040] A light-stable lubricating grease is prepared according to the following steps:

[0041] (1) Put 45 parts of type II mineral oil (40°C kinematic viscosity is 100cst) into the reactor, heat to 65°C and put in 5 parts of lithium lauryl stearate soap, 1 part of calcium lauryl stearate soap, Stir and heat up to 175°C, add 30 parts of type II mineral oil (40°C kinematic viscosity is 100cst) for thickening;

[0042] (2) Heat up to the highest temperature of 211°C, keep warm for 2 minutes, add 16 parts of type II mineral oil (40°C kinematic viscosity is 100cst), keep warm at 185°C for 5 minutes, cool to 135±5°C and grind twice with a grinder to obtain the foundation fat;

[0043] (3) Cool the base grease obtained in step (2) to 75°C, add 0.6 parts of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 0.7 parts of 2, 4-dihydroxybenzophenone, 0.4 parts of alkenyl succinic acid, 1.3 parts of zinc dialkyl dithiophosphate, after being ground twice by a grinder, filtered and package...

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Abstract

The present invention discloses a photo-stabilization type lubricating grease, which comprises, by weight, 75-92 parts of a base oil, 5-20 parts of a fatty acid soap thickener, 0.1-2 parts of an antioxidant, 0.01-2 parts of a light stabilizer, and 0.1-2 parts of an anti-rust agent, wherein the components are matched under a certain condition according to the ratio to obtain the photo-stabilization type lubricating grease. According to the present invention, the added functional additive does not affect the product structure, wherein the specific performance is that the consistency (cone penetration) and the strength limit of the product are not changed significantly; and with the addition of the light stabilizer, the photo-stabilization type lubricating grease of the present invention has the light stability, wherein the appearance of the lubricating grease is essentially the same before and after the illumination, and the product meets a variety of lubricating requirements.

Description

technical field [0001] The invention relates to the field of lubricating grease, in particular to a novel lubricating grease with light stability and a preparation method thereof. Background technique [0002] In 2012, the global grease production reached 1.1213 million tons, a decrease of 3.43% compared with 2011; China's grease production was 422,200 tons, a decrease of 7.24% compared with 2011. Three companies including Mobil, Shell and Flowserve produced grease in China It is 14,200 tons. China accounts for 37.65% of the world's total grease production. China's lubricating grease output still ranks first in the world. Lithium-based grease still occupies an important position in the domestic market, and its output still accounts for more than 70% of the total grease. [0003] After the light test of two domestic brands of lithium-based grease, it was found that the samples were reddened and darkened to varying degrees. For smaller grease companies, the instability of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M169/00C10N50/10
Inventor 冯青姣安华瑞施江波王绘玲杨晓钧王晓龙
Owner 无锡中石油润滑脂有限责任公司
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