Application of high-temperature antioxidant in oxidation resistance of lubricant, high-temperature antioxidant lubricant as well as preparation method and application

A high-temperature antioxidant and lubricant technology, applied in the field of lubricants, can solve the problems of poor thermal stability, incompatible oxidation resistance, and poor oxidation resistance, and achieve excellent oxidation resistance, high-efficiency oxidation resistance and thermal stability. Effect of Oxidation Stability Enhancement

Active Publication Date: 2020-06-05
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the amine antioxidants are only derivatives of diphenylamine antioxidants, and generally have poor thermal stability at higher temperatures, or poor antioxidant performance under harsh conditions, that is, high thermal stability and excellent The disadvantages of incompatibility of antioxidant properties

Method used

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  • Application of high-temperature antioxidant in oxidation resistance of lubricant, high-temperature antioxidant lubricant as well as preparation method and application
  • Application of high-temperature antioxidant in oxidation resistance of lubricant, high-temperature antioxidant lubricant as well as preparation method and application
  • Application of high-temperature antioxidant in oxidation resistance of lubricant, high-temperature antioxidant lubricant as well as preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The present invention also provides a preparation method of the high-temperature anti-oxidant lubricant described in the above technical solution, comprising the following steps:

[0032] The high temperature antioxidant lubricant is obtained by mixing the high temperature antioxidant with lubricating oil.

[0033] In the present invention, each component is consistent with the components described in the foregoing technical solution, and will not be repeated here.

[0034] The invention mixes the high temperature antioxidant with lubricating oil to obtain the high temperature antioxidant lubricant. In the present invention, the mixing method is preferably heat preservation and vibration; the present invention has no special limitation on the temperature of the heat preservation, preferably 50-60°C; there is no special limitation on the frequency of the vibration so that the high temperature resistance The oxygen agent and lubricating oil are fully mixed. In the prese...

Embodiment 1～13

[0038] The lubricating oil reagents used in Examples 1 to 13 are all commercially available, wherein:

[0039] Polyethylene glycol (PEG): purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0040] Formula III: ExxonMobil lubricating oil, model A51;

[0041] 3970: Produced by the British Croda Company;

[0042] 1936: Produced by the British Croda Company.

[0043] The preparation process is:

[0044] The high-temperature antioxidant and lubricating oil were mechanically shaken and mixed at a heat preservation temperature of 50-60°C until the mixed system was clear and cooled to room temperature, and then stood still for 30 minutes without precipitation to obtain a high-temperature antioxidant lubricant.

[0045] The reagents and dosages of Examples 1-5 are shown in Table 1.

[0046] Table 1 Embodiment 1~5 reagent and consumption (mass percentage content)

[0047] Lubricant PEG Antioxidant Formula II Example 1 99.5％ 0.5％ Example 2 99％ 1％ E...

Embodiment 6～13

[0049] Table 2 embodiment 6~13 reagent and consumption

[0050]

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Abstract

The invention belongs to the technical field of lubricants, and particularly relates to application of a high-temperature antioxidant in oxidation resistance of a lubricant, a high-temperature antioxidant lubricant and a preparation method and application of the high-temperature antioxidant lubricant. The invention provides application of the high-temperature antioxidant in oxidation resistance ofthe lubricant. The high-temperature antioxidant is a benzene ring nitrogen-doped diphenylamine antioxidant. Compared with phenolic antioxidants, the high-temperature antioxidant provided by the invention has more excellent oxidation resistance; compared with conventional diphenylamine antioxidants and derivatives thereof for improving the oxidation resistance of lubricants, the benzene ring nitrogen-doped diphenylamine antioxidant obtained by replacing carbon on a benzene ring with nitrogen has more efficient effects of enhancing the oxidation resistance and thermal oxidation stability of thelubricants.

Description

technical field [0001] The invention belongs to the technical field of lubricants, and in particular relates to an application of a high-temperature antioxidant in lubricant anti-oxidation, a high-temperature antioxidant lubricant, a preparation method and application thereof. Background technique [0002] Lubricant is a lubricating medium used to reduce the friction resistance of the friction pair and slow down its wear. The lubricant can also cool, clean and prevent pollution for the friction pair. With the rapid development of the industry, the industry has higher and higher requirements for the performance of lubricants. Lubricants inevitably face the problem of oxidation under some harsh conditions (such as high temperature), so that the acid oxidation products, insoluble oligomer "sludge" and paint film produced in the lubricant are on the surface of lubricating materials (such as metal) Deposition affects the viscosity and acidity of the lubricant, which in turn caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M133/40C10M169/04C10N30/10C10N30/08
CPCC10M133/40C10M169/04C10M2207/2825C10M2209/1033C10M2215/221
Inventor 蔡美荣祁衡周峰于强亮刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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