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A kind of low noise mixed soap base grease composition and preparation method thereof

A grease composition and the technology of the composition are applied in the field of grease, which can solve the problems of difficulty in meeting high requirements for noise and life, and the inability of grease to reach the noise level, and achieve excellent mechanical stability, excellent quietness, and good protection. performance effect

Active Publication Date: 2022-07-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN110669567A discloses a preparation method of low-noise and long-life composite barium-based grease, which uses PAO, mineral oil, ester oil, polyol ester thickened composite barium soap, to a certain extent solves the existing noise of present composite barium-based grease and the technical problem that the service life is difficult to meet higher requirements
[0006] With the improvement of industrial technology, household appliances, electronic equipment, office equipment, automobiles, precision instruments, and some military equipment use Be Quiet+ and More Quiet noise testers to evaluate the silent level of grease, the low-noise lubrication mentioned above Fat cannot reach the highest noise level

Method used

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  • A kind of low noise mixed soap base grease composition and preparation method thereof
  • A kind of low noise mixed soap base grease composition and preparation method thereof
  • A kind of low noise mixed soap base grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The components of this example are based on the total weight of the composition:

[0032] (1) Base oil 87%;

[0033] (2) Thickener 8%;

[0034] (3) Anti-wear agent 2%;

[0035] (4) 1% rust inhibitor;

[0036] (5) Antioxidant 2%.

[0037] Add dodecylhydroxystearic acid to 1 / 2 base oil (ether oil and synthetic oil, mass ratio 1:2, base oil viscosity is 80mm 2 / s, the pour point is -40°C), mixed and heated to 85°C, after the fatty acid was dissolved, an aqueous solution of lithium hydroxide monohydrate and potassium hydroxide (mass ratio 9:1) was added, and the saponification reaction was carried out for 1.5 hours; after the reaction was completed The temperature was raised to 130°C, the temperature was kept constant for 30 minutes, and the water was drained. After the drain was completed, the temperature was raised to a maximum temperature of 210°C. Then, the remaining base oil was added, stirred for five minutes, taken out and rapidly cooled, and the quenching temper...

Embodiment 2

[0042] The components of this example are based on the total weight of the composition:

[0043] (1) Base oil 78%;

[0044] (2) Thickener 15%;

[0045] (3) Anti-wear agent 3%;

[0046] (4) Rust inhibitor 2%;

[0047] (5) Antioxidant 2%.

[0048] Add dodecylhydroxystearic acid and stearic acid (mass ratio 4:1) to 1 / 2 base oil (mineral oil and synthetic oil, mass ratio 2:1, base oil viscosity 70mm 2 / s, pour point is -30 ℃), mix and heat to 90 ℃, after the fatty acid is dissolved, add the aqueous solution of monohydrate lithium hydroxide and potassium hydroxide (mass ratio 1:1), saponification reaction for 1.0 hours; The temperature was raised to 120°C, kept at a constant temperature for 30 minutes, and then drained. After draining, the temperature was raised to a maximum temperature of 190°C. Then, the remaining base oil was added, stirred for five minutes, taken out and rapidly cooled, and the quenching temperature was controlled to 135°C. Continue to lower the temperature ...

Embodiment 3

[0053] The components of this example are based on the total weight of the composition:

[0054] (1) Base oil 83%;

[0055] (2) Thickener 12%;

[0056] (3) Anti-wear agent 2%;

[0057] (4) 1% rust inhibitor;

[0058] (5) Antioxidant 2%.

[0059] Add dodecylhydroxystearic acid and hydrogenated castor oil (mass ratio 3:2) to 1 / 2 base oil (mineral oil and ether oil, mass ratio 5:1, base oil viscosity 100mm 2 / s, pour point is -35 ℃), mix and heat to 87 ℃, after the fatty acid is dissolved, add the aqueous solution of monohydrate lithium hydroxide and potassium hydroxide (mass ratio 2:1), saponification reaction for 1.5 hours; The temperature was raised to 130°C, the temperature was kept constant for 20 minutes, and the water was drained. After the drain was completed, the temperature was raised to a maximum temperature of 205°C, then the remaining base oil was added, stirred for five minutes, taken out and rapidly cooled, and the quenching temperature was controlled to 145°C....

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Abstract

The present invention relates to a low-noise mixed soap base lubricating grease composition and a preparation method thereof. According to the total weight percentage of the composition, the composition comprises the following components: 78-87% of base oil; 9-15% of thickener; 2.0-3.0% of rust inhibitor; 1.0-2.0% of rust inhibitor; 1.0-2.0% of antioxidant; the base oil is selected from one or more of mineral oil or ether oil or polyalphaolefin synthetic oil; the The thickener is the reaction product of fatty acid with lithium hydroxide and potassium hydroxide. Compared with the lithium-based grease, the low-noise mixed soap-based grease provided by the present invention has a shorter and more uniform fiber structure, which effectively reduces the collision between the ball and the cage along the bearing radial direction, and has an obvious effect of reducing vibration. And the obtained product can be used in the environment below ‑30℃, and has long bearing life and protection effect. The preparation method of the invention has the advantages of saving energy, and can ensure that the fibers are short and uniform, the process is simple, and the product quality is stable.

Description

technical field [0001] The invention relates to the technical field of grease, in particular to a low-noise mixed soap-based grease composition and a preparation method thereof. Background technique [0002] Greases are shaping lubricants composed of thickeners, base oils and additives, with semi-fluid properties. The thickener is dispersed in the base oil, and the function of the additive is to improve the relative properties of the grease. The output and usage of lubricating grease is far lower than that of lubricating oil, but the types of lubricating grease and its role in industry and life are no less than lubricating oil. First of all, grease can be used in a sealed environment, which can reduce lubricant consumption and maintenance costs; grease has a certain structure and is not easy to lose, which can simplify the purpose of lubricating system design; grease can be suitable for harsh operating conditions, Such as high temperature, low speed, high load conditions. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N50/10C10N40/02C10N30/06C10N30/10C10N30/12
CPCC10M169/00C10M2207/1285C10M2223/045C10M2219/044C10M2223/041C10M2207/026C10M2207/402C10M2215/223C10M2207/1265C10M2203/1006C10M2205/0206
Inventor 申明主吴宝杰周伟东刘建龙
Owner CHINA PETROLEUM & CHEM CORP
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