A kind of preparation method of anti-oxidation lubricating oil for internal combustion engine

A lubricating oil and internal combustion engine technology, applied in the field of lubricating oil, can solve the problems of lubricating oil being easily oxidized, and achieve the effects of excellent shear stability, avoiding acid corrosion, and good compatibility

Inactive Publication Date: 2017-12-12
广州市金得机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to solve the problem that the lubricating oil used for internal combustion engines is easily oxidized

Method used

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  • A kind of preparation method of anti-oxidation lubricating oil for internal combustion engine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1, 100Kg of the second-class hydrogenated base oil 500N, high alkali value calcium sulfonate (calcium octadecylbenzenesulfonate with a base value of 320KOH / g) 4Kg, hydroxyethylidene diphosphonic acid 3Kg, sulfur phosphorus Butyl octanol zinc salt 2Kg, di-secondary alcohol alkyl zinc dithiophosphate 1Kg, mixed and heated to 50°C to obtain the first mixture;

[0026] Step 2: In the first mixture, add 1Kg of monosuccinimide, 1Kg of polymethacrylate, 1Kg of triethyl phosphate, and 1Kg of fumarate, heat up to 60°C and stir to obtain the second mixture ;

[0027] Step 3. In the second mixture, add alkenyl succinic acid 2Kg, benzotriazole 2Kg, 2,6-tert-butyl p-cresol 1Kg, dimethyl tin 1Kg, silicone oil 3Kg, polyvinyl alcohol 4Kg, heated up to 50°C and then stirred to obtain lubricating oil.

Embodiment 2

[0029] Step 1, 150Kg of the second-class hydrogenated base oil 500N, high alkali value calcium sulfonate (calcium octadecylbenzenesulfonate with a base value of 320KOH / g) 7Kg, hydroxyethylidene diphosphonic acid 6Kg, sulfur phosphorus 3Kg of butyl octanol zinc salt, 2Kg of di-secondary alcohol alkyl dithiophosphate zinc, mixed and heated to 60°C to obtain the first mixture;

[0030] Step 2: In the first mixture, add 3Kg of monosuccinimide, 3Kg of polymethacrylate, 2Kg of triethyl phosphate, and 3Kg of fumarate, heat up to 70°C and stir to obtain the second mixture ;

[0031] Step 3. In the second mixture, add alkenyl succinic acid 5Kg, benzotriazole 3Kg, 2,6-tert-butyl p-cresol 2Kg, dimethyl tin 3Kg, silicone oil 5Kg, polyvinyl alcohol 6Kg, heated up to 60°C and then stirred to obtain lubricating oil.

Embodiment 3

[0033] Step 1, the second type of hydrogenated base oil 500N 120Kg, high alkali value calcium sulfonate (calcium octadecylbenzenesulfonate with a base value of 320KOH / g) 6Kg, hydroxyethylidene diphosphonic acid 5Kg, sulfur phosphorus 2Kg of butyl octanol zinc salt, 1Kg of di-secondary alcohol alkyl zinc dithiophosphate, mixed and heated to 55°C to obtain the first mixture;

[0034] Step 2: In the first mixture, add 2Kg of monosuccinimide, 2Kg of polymethacrylate, 2Kg of triethyl phosphate, and 2Kg of fumarate, heat up to 65°C and stir to obtain the second mixture ;

[0035] Step 3: In the second mixture, add alkenyl succinic acid 4Kg, benzotriazole 3Kg, 2,6-tert-butyl p-cresol 2Kg, dimethyl tin 2Kg, silicone oil 4Kg, polyvinyl alcohol 5Kg, heated up to 55°C and then stirred to obtain lubricating oil.

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Abstract

The invention discloses a method for preparing anti-oxidation lubricating oil for an internal combustion engine and belongs to the technical field of lubricating oil. The method includes the steps that hydrogenated base oil, overbased calcium sulphonate, HEDP, zinc butyl octanol phosphate, secondary alcohol alkyl zinc dithiophosphate are mixed and heated to obtain a first mixture; a dispersing agent, a thickener, a defoaming agent and a pour point depressant are added into the first mixture, heated and stirred to obtain a second mixture; alkenyl succinic acid, benzotriazole, 2,6-tert-butyl-p-cresol, dimethyltin dichloride, silicon oil and polyvinyl alcohol are added into the second mixture, heated and stirred to obtain the lubricating oil. Oxidation resistance of hydrogenated base oil in the lubricating oil is high, the content of non-hydrocarbon components containing sulfide, chloride and the like is low, and the lubricating oil has the advantages of being low in pour point and high in flashing point. Alkenyl succinic acid can effectively reduce the friction coefficient between movement parts, protective films are formed on the surfaces of the movement parts, and degradation of antioxidants can be prevented.

Description

technical field [0001] The invention discloses a preparation method of oxidation-resistant lubricating oil for internal combustion engines, which belongs to the technical field of lubricating oil. Background technique [0002] The working surface of any moving part, even after extremely precise machining, still cannot avoid the existence of roughness, mechanical friction will inevitably occur in the relative movement, consume a certain amount of power, and cause heat and wear at the same time. In order to reduce wear and power consumption, it is added between the working surfaces of two parts to make them completely separated, that is, when they are in a complete fluid friction state, the power and wear will be greatly reduced. The functions of lubricating oil for internal combustion engines mainly include: 1. Lubrication: The oil pump continuously delivers the clean oil to the working surfaces of the moving parts of the engine to form a thin layer of lubricating oil film, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N30/06C10N30/02C10N30/10C10N30/12C10N40/25
Inventor 秦尘毅
Owner 广州市金得机械科技有限公司
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