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Gear oil composition and preparation method thereof

A technology of composition and gear oil, which is applied in the field of lubricating oil, and can solve the problems of oil emulsification and poor water separation of gear oil, etc.

Active Publication Date: 2014-01-01
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Adding a demulsifier to improve the demulsification performance of gear oil can temporarily solve the impact of water ingress on it, but it can only separate water by itself in the case of a small amount of water inflow. If a large amount of water enters the system, the oil will also emulsify
At the same time, the demulsifier added as a surfactant will lose and gradually decrease with the separation of water in the presence of water, resulting in the gradual deterioration of the water separation property of gear oil

Method used

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  • Gear oil composition and preparation method thereof
  • Gear oil composition and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0048] The present invention also provides a kind of preparation method of gear oil composition, comprises the following steps:

[0049] 0.1 to 3 parts by weight of antioxidant, 0.01 to 0.5 parts by weight of metal passivator, 0.1 to 3 parts by weight of corrosion inhibitor, 0.5 to 5.0 parts by weight of extreme pressure antiwear agent, 0.0005 to 0.05 parts by weight of Antifoaming agent, 0-0.05 parts by weight of demulsifier, 75-99 parts by weight of mineral base oil and 0-20 parts by weight of PAO base oil are mixed and stirred evenly to obtain a gear oil composition. The metal passivator is selected from One or more of benzotriazole derivatives, thiadiazole derivatives and organic amine compounds; the corrosion inhibitor is selected from one of fatty acids, fatty acid derivatives, sulfonates and complex phosphate compounds or several; the corrosion inhibitor is selected from one or more of fatty acids, fatty acid derivatives, sulfonates and complex phosphate compounds; the ...

Embodiment 1

[0056] Add antioxidants, metal passivators, corrosion inhibitors, extreme pressure antiwear agents, antifoaming agents, and demulsifiers to mineral base oil and PAO base oil in sequence according to the grades and contents of the component types in Table 1. , and stir evenly to obtain a gear oil composition.

[0057] The performance of the gear oil composition obtained in Example 1 was tested according to standards such as SH / T0193, GB / T8022 and GB / T7305, and the results obtained are shown in Table 1.

Embodiment 2

[0059] Add antioxidants, metal passivators, corrosion inhibitors, extreme pressure antiwear agents, antifoaming agents, and demulsifiers to mineral base oil and PAO base oil in sequence according to the grades and contents of the component types in Table 1. , and stir evenly to obtain a gear oil composition.

[0060] According to the standards of SH / T0193, GB / T8022 and GB / T7305, the performance of the gear oil composition obtained in Example 2 was tested, and the results obtained are shown in Table 1.

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Abstract

The invention provides a gear oil composition and a preparation method thereof. The gear oil composition comprises the following components in parts by weight: 75-99 parts of mineral base oil, 0-20 parts of PAO (poly-alpha-olefin) base oil, 0.1-3 parts of antioxidant, 0.01-0.5 part of metal passivator, 0.1-3 parts of corrosion inhibitor, 0.5-5.0 parts of extreme-pressure antiwear additive, 0.0005-0.05 part of antifoam agent and 0-0.05 part of demulsifier. Compared with the independently added demulsifier in the prior art, the composition selects an additive compound system with water-resistant action, and various additives interact with each other, so that the oil product has excellent water resistance, water diversion property and quick water diversion; and thus, the oil product can be hardly mixed in water, so that the additives are not lost along with water in the water discharge process, thereby reducing the consumption of the oil product.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, in particular to a gear oil composition and a preparation method thereof. Background technique [0002] Lubricating oil is a liquid lubricant used on various types of machinery to reduce friction and protect machinery and processed parts. It mainly plays the role of lubrication, cooling, rust prevention, cleaning, sealing and buffering. It is mainly composed of base oil and additives. Additives can add new properties to base oils or improve and enhance the performance of lubricating oils. Industrial lubricating oil can be divided into lubricating oil for mechanical equipment and lubricating oil for metal processing. Among them, lubricating oil for mechanical equipment can be divided into hydraulic oil, steam turbine oil, gear oil, air compressor oil, guide rail oil, spindle oil, heat transfer oil , Transformer oil, vacuum pump oil and grease, etc. [0003] Gear oil is an important lubri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M177/00C10N30/18
Inventor 马宏宗明曹毅陈士香李姝秦颖
Owner CHINA PETROLEUM & CHEM CORP
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