Lubricating oil antioxidant composition

A technology of antioxidant and composition, applied in the field of lubrication, can solve problems such as inconsistency, and achieve the effects of prolonging service life, improving induction period, and high-efficiency antioxidant performance

Active Publication Date: 2020-10-16
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a lubricating oil antioxidant composition, which is different from the prior art, solves the technical problem of high-temperature oxidation of lubricating oil in the prior art, has excellent oxidation resistance, and prolongs lubrication Oxidation induction period of oil, improve the service life of lubricating oil, and achieve the purpose of saving energy and reducing consumption

Method used

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  • Lubricating oil antioxidant composition
  • Lubricating oil antioxidant composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Using pentaerythritol ester (5750) as the base oil, add 2% L57, 0.2% tetraoctylphosphonium dioctyl phosphate ionic liquid ([P8888][DEHP]) and the combination of the two, and evaluate by the oxidation induction period The antioxidant properties of the oil samples are shown in Table 1.

[0022] Table 1 Example 1 Oil sample oxidation induction period

[0023] oil sample Oxidation induction period, min 5750+2％L57 53.2 5750+0.2%[P8888][DEHP] 0 5750+2%L57+0.2%[P8888][DEHP] 67.2

Embodiment 2

[0025] With pentaerythritol ester (5750) as the base oil, add 1% T531, 1% tributyltetradecylphosphonium dioctyl phosphate ionic liquid ([P44414][DEHP]) and the combination of the two, through oxidation The induction period was used to evaluate the antioxidant properties of the oil samples, and the results are shown in Table 2.

[0026] Table 2 Example 2 Oil sample oxidation induction period

[0027] oil sample Oxidation induction period, min 5750+1％T531 44.3 5750+1%[P44414][DEHP] 0 5750+1%T531+1%[P44414][DEHP] 72.8

Embodiment 3

[0029] Using pentaerythritol ester (5750) as base oil, adding 2% V81, 1% tetraoctylphosphonium dioctyl phosphate ionic liquid ([P8888][DEHP]) and the combination of the two, it is evaluated by the oxidation induction period The antioxidant properties of the oil samples are shown in Table 3.

[0030] Table 3 Example 3 Oil sample oxidation induction period

[0031] oil sample Oxidation induction period, min 5750+2％V81 57.4 5750+1%[P8888][DEHP] 0 5750+2% V81+1%[P8888][DEHP] 105.8

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Abstract

The invention discloses a lubricating oil antioxidant composition. The composition is prepared from an amine antioxidant and tetraalkyl phosphonium phosphate ionic liquid in a ratio of 1: 100-100:1. The lubricating oil antioxidant composition has excellent oxidation resistance in synthetic ester base oil, can remarkably prolong the oxidation induction period of the base oil and prolong the servicelife of lubricating oil, and is particularly suitable for lubricating working conditions with strict high-temperature requirements.

Description

technical field [0001] The invention relates to a lubricating oil antioxidant composition, which belongs to the technical field of lubrication. Background technique [0002] With the development of modern mechanical equipment design towards small size, high speed, high load and high power, the working conditions of lubricating oil are becoming more and more harsh, and higher requirements are put forward for the oxidation stability of lubricating oil. Therefore, it is necessary to Develop high-efficiency, new, multi-functional, compound antioxidants to meet this demand. Composite antioxidants have the advantages of good effect, good comprehensive performance and full synergistic effect of multiple additives, often can obtain performance that cannot be achieved by a single agent, and can meet the requirements of more stringent service conditions for the antioxidant performance of lubricants . The development of composite antioxidants is becoming more and more important in lu...

Claims

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Application Information

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IPC IPC(8): C10M141/10C10M161/00C10N30/08C10N30/10
CPCC10M141/10C10M161/00C10M2207/0225C10M2215/065C10M2217/046C10M2215/064C10M2223/06
Inventor 李维民马瑞王晓波陈云龙
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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