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Test method for evaluating thermal oxidation stability of coal-made PAO base oil

A technology of stability test and test method, which is applied in the test field of evaluating the thermal oxidation stability of coal-based PAO base oil, can solve the problems of time-consuming and labor-intensive test methods, long test methods, and inability to be widely used in industrial production and processing, so as to reduce test costs , the effect of reducing the length of the test

Inactive Publication Date: 2021-10-29
山西潞安太行润滑科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, reasonable test conditions must be selected according to the actual use environment of the lubricating oil to be tested. At present, the commonly used test method is GB / T12581 "Determination of Oxidation Characteristics of Mineral Oil with Inhibitors", but the test method of GB / T12581 takes a long time , time-consuming and labor-intensive, and cannot be widely used in industrial production and processing. Therefore, we propose a test method for evaluating the thermal oxidation stability of coal-based PAO base oils

Method used

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  • Test method for evaluating thermal oxidation stability of coal-made PAO base oil

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Experimental program
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Effect test

Embodiment 1

[0031] see figure 1 , a kind of test method for evaluating the thermo-oxidative stability of coal-made PAO base oil, comprises the following steps:

[0032] S1. Select a test tube to weigh an array of coal-based PAO base oil samples for the thermal oxidation stability test of the coal-based PAO base oil;

[0033] S2. Selecting a test tube to weigh an array of antioxidants for the thermal oxidation stability test of the coal-made PAO base oil;

[0034] S3. Determination and calculation of the kinematic viscosity and acid value of the coal-based PAO base oil sample before the test;

[0035] S4. Select a group of samples from the coal-based PAO base oil samples used in the thermal oxidation stability test of the coal-based PAO base oil as a control group, without adding antioxidants;

[0036] S5. The coal-based PAO base oil sample that was weighed for the thermal oxidation stability test of the coal-based PAO base oil is correspondingly added with an antioxidant, as a comparati...

Embodiment 2

[0053] A test method for evaluating thermal oxidation stability of coal-based PAO base oil, comprising the following steps:

[0054] S1. Select a test tube to weigh a group of coal-based PAO base oil samples for the thermal oxidation stability test of coal-based PAO base oil. The coal-based PAO base oil of each group of coal-based PAO base oil samples is the same. The number of groups of PAO base oil samples can be 3 groups;

[0055] S2. Select a test tube to weigh the antioxidants used in the thermal oxidation stability test of the coal-based PAO base oil. The doses of the antioxidants used in the thermal oxidation stability test of the coal-based PAO base oil are different, and the doses are weighed according to a certain gradient. Take, the group number of described antioxidant is 3 groups, and the mass fraction of 3 groups of antioxidants is 0.2%, 0.4% and 0.6% respectively, described antioxidant selects free radical terminator for use, and described free radical terminato...

Embodiment 3

[0067] A test method for evaluating thermal oxidation stability of coal-based PAO base oil, comprising the following steps:

[0068] S1. Select a test tube to weigh a group of coal-based PAO base oil samples for the thermal oxidation stability test of coal-based PAO base oil. The coal-based PAO base oil of each group of coal-based PAO base oil samples is the same. The number of groups of PAO base oil samples can be 5 groups;

[0069] S2. Select a test tube to weigh the antioxidants used in the thermal oxidation stability test of the coal-based PAO base oil. The doses of the antioxidants used in the thermal oxidation stability test of the coal-based PAO base oil are different, and the doses are weighed according to a certain gradient. Take, the group number of described antioxidant is 5 groups, the mass fraction of 5 groups of antioxidants is 0.2%, 0.4%, 0.6%, 0.8% and 1.0% respectively, described antioxidant selects free radical terminator for use, and described free radical ...

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Abstract

The invention discloses a test method for evaluating thermal oxidation stability of coal-made PAO base oil, and belongs to the technical field of PAO base oil performance detection.The test method comprises the following steps that S1, selecting test tubes to weigh a plurality of groups of coal-made PAO base oil samples used for a coal-made PAO base oil thermal oxidation stability test; s2, selecting test tubes to weigh a plurality of groups of antioxidants for the thermal oxidation stability test of the coal PAO base oil; s3, measuring and calculating the values of the kinematic viscosity and the acid value of the coal PAO base oil sample before the test; and S4, selecting a group of samples from the plurality of groups of coal PAO base oil samples for the thermal oxidation stability test of the coal PAO base oil as a control group. According to the test method for evaluating the thermal oxidation stability of the coal-made PAO base oil, the indirect index kinematic viscosity of the thermal oxidation stability index is measured; and the consumption rate of the antioxidant is measured before and after the test, so that the test duration and the test cost are effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of PAO base oil performance detection, in particular to a test method for evaluating the thermal oxidation stability of coal-made PAO base oil. Background technique [0002] The thermal oxidation stability of lubricating oil based on coal-based PAO base oil refers to the anti-aging performance of the oil, which is generally expressed by the sediment and acid value generated in the oil, and is one of the main indicators that determine the service life of the oil. During use, lubricating oil will inevitably come into contact with air, metals and impurities, etc. When used under high temperature conditions, the oxidation of oil products will be accelerated, and the sludge generated during the oxidation process will shorten the service life of oil products and industrial equipment components. shortened, affecting the lubrication effect. At the same time, with the increasingly stringent energy-saving and environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00G01N21/3577
CPCG01N11/00G01N21/3577
Inventor 田晔李树晓张晓军吴天杰成凌翔马毅苏玉萍
Owner 山西潞安太行润滑科技股份有限公司