An extreme-pressure-resisting lubricating oil additive and lubricating oil

A lubricating oil additive and lubricating oil technology, applied in the chemical field, can solve problems such as component discharge, metal surface corrosion, chemical pollution, etc., achieve the effects of preventing sintering, low cost, and improving extreme pressure resistance

Active Publication Date: 2017-07-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These additives will corrode the metal surface during use, and there are pro

Method used

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  • An extreme-pressure-resisting lubricating oil additive and lubricating oil
  • An extreme-pressure-resisting lubricating oil additive and lubricating oil
  • An extreme-pressure-resisting lubricating oil additive and lubricating oil

Examples

Experimental program
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Effect test

Example Embodiment

[0057] Example 1

[0058] The method of the embodiment of the present invention is used to synthesize oil-soluble nanometer magnesium hydroxysilicate, and the specific process is as follows:

[0059] 1) Weigh 2.05g of sodium nitrate, 0.41g of sodium silicate, and 10.3g of sodium hydroxide to dissolve into 200ml of water, and stir evenly;

[0060] 2) Heat the above mixed solution to 180 degrees, keep it for 24 hours, and then cool to room temperature to obtain a white liquid;

[0061] 3) Centrifuge the above white liquid to obtain a white precipitate, which is dissolved in water and ethanol alternately to wash the white precipitate;

[0062] 4) Weigh 2.0g of the white precipitate and dissolve it in 15ml of ethanol, heat to 70°C, add 0.1g of SG-SiF17 silane coupling agent dropwise, stir, react for 2 hours, and cool to room temperature to obtain a white liquid;

[0063] 5) Centrifuge the white liquid obtained in step 4) to obtain a white precipitate;

[0064] 6) Repeatedly washing the white ...

Example Embodiment

[0065] Example 2

[0066] The oil-soluble nano-magnesium hydroxysilicate prepared in the embodiment is measured according to the mass fraction of the raw materials shown in Table 1, and the raw materials are mixed and subjected to ultrasonic treatment to obtain the lubricating oil additive product of this embodiment.

[0067]

[0068] This lubricant additive product is added to the lubricant to obtain a lubricant containing oil-soluble nano-magnesium hydroxysilicate with a mass fraction of three thousandths.

[0069] The SRV friction and wear performance was used to evaluate the extreme pressure and anti-wear characteristics of lubricating oil. The experimental conditions were carried out in accordance with the experimental conditions of the determination of the extreme pressure test standard for lubricating oils ASTM D7421. The specific parameters were: frequency 50Hz, amplitude 2mm, temperature 50℃, friction pair GCr15. It adopts continuous loading mode, loading 100N every two min...

Example Embodiment

[0072] Example 3

[0073] According to the mass fraction of the raw materials shown in Table 3, according to the method of the present invention, the raw materials are mixed and ultrasonically processed to obtain the lubricating oil additive product of this embodiment.

[0074]

[0075] This lubricant additive product is added to the lubricant to obtain a lubricant containing oil-soluble nano-magnesium hydroxysilicate with a mass fraction of five thousandths.

[0076] The friction and wear properties of SRV4 were used to evaluate the extreme pressure and antiwear properties of lubricants. The experimental conditions were carried out in accordance with the test conditions of the standard ASTM D7421 for determining the extreme pressure of lubricating oil. The specific parameters were: frequency 50Hz, amplitude 2mm, temperature 50℃, friction pair GCr15. It adopts continuous loading mode, loading 100N every two minutes until lubrication fails. Comparing the base oil with the lubricatin...

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Abstract

A lubricating oil additive and lubricating oil are disclosed. The additive includes 70-99 parts by mass of base oil and 1-30 parts by mass of oil-soluble magnesium silicate hydroxide. The additive is stable in performance, and the cost is low. The additive is free of sulfur, phosphorus and other elements, thus avoiding pollutant discharge problems of sulfur, phosphorus and other elements. The additive, under boundary lubrication conditions, can effectively prevent direct contact between a friction pair, reduce abrasion, prevent clinkering, seizing and stuck phenomena, and scratches on surfaces of the friction pair, and greatly improve extreme pressure resistance of the lubricating oil.

Description

technical field [0001] The present invention relates to the field of chemistry, in particular, to lubricating oil additives and lubricating oils. Background technique [0002] The basic function of lubricating oil is to reduce mechanical friction and wear, and prevent gluing caused by frictional heat. In order to improve the lubricating performance of lubricating oil, in addition to improving the properties of the base oil, it is necessary to add different types of additives to the lubricating oil. Under low-speed high-load or high-speed impact conditions, that is, under extreme pressure conditions, the friction interface is prone to sintering. In order to prevent this sintering, it is necessary to add extreme pressure additives to the lubricating oil. [0003] At present, the extreme pressure additives commonly used in lubricating oil are mainly sulfur-based additives, such as sulfurized hydrocarbons, thioesters, etc., and phosphorus-containing additives, such as metal dia...

Claims

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Application Information

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IPC IPC(8): C10M159/12C10M169/04C10N30/06
CPCC10M159/12C10M169/042C10M2203/1006C10M2201/14C10N2030/43C10N2030/42C10N2030/06C10N2020/06
Inventor 刘鹏霄刘宇宏金元生雒建斌
Owner TSINGHUA UNIV
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