Lubricating oil composition and its preparation method

A technology of lubricating oil composition and mixture, which is applied in the field of lubricating oil, can solve problems such as poor stability, achieve the effects of reducing energy consumption, easily obtaining raw materials, and reducing wear and friction

Active Publication Date: 2020-03-31
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And long-term placement still exists delamination phenomenon, poor stability

Method used

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  • Lubricating oil composition and its preparation method
  • Lubricating oil composition and its preparation method

Examples

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preparation example Construction

[0050] According to the lubricating oil composition of the present invention, the preparation method of the hydrophilic fumed silica (d) comprises the following steps:

[0051] After gasifying silicon tetrachloride at high temperature, in the presence of hydrogen and oxygen, or air, perform gas phase hydrolysis at high temperature to obtain fumed silica;

[0052] Purging the fumed silica with nitrogen-containing air until the pH is between 4-6 to obtain the hydrophilic fumed silica (d).

[0053] Specifically, the preparation method of said hydrophilic fumed silica (d) comprises the following steps:

[0054] Silicon tetrachloride is gasified at a flame temperature of 1000-1800°C, and in the presence of hydrogen, oxygen, or air, gas-phase hydrolysis is carried out at a high temperature of about 1800°C to obtain fumed silica; the gas phase produced at this time Silica particles are extremely fine and form an aerosol with gas, which is not easy to capture. Therefore, the obtaine...

Embodiment 1

[0066] 1 weight part of dodecyltrimethoxysilane (manufacturer: Nanjing Quanxi Chemical Co., Ltd., the same below) is added to 1 weight part of hydrophilic fumed silica (manufacturer: Evonik Degussa company, Trademark: AEROSIL300) in the heating container, be warmed up to 80 ℃, fully stir 20min; 50 parts by weight of saturated polyol ester (manufacturer: Croda Chemical Company, brand: Priolube3987), 50 parts by weight of mineral oil 500N (produced Manufacturer: Sinopec Maoming Petrochemical Company, brand: 500N) into a stainless steel blending kettle with a stirrer, keep the temperature of the kettle at 80 ° C, add 1 weight part of stearic acid, stir for 7 minutes until uniform and transparent; then put it into the heating container The mixture of dodecyltrimethoxysilane and hydrophilic fumed silica was added into a stainless steel mixing kettle, stirred for 10 minutes, the heating was stopped, and the temperature of the kettle was lowered to 50° C. with cooling water to obtain ...

Embodiment 2

[0076] The finished lubricating oil composition VI was obtained in the same manner as in Example 1, except that 1 part by weight of the hydrophilic fumed silica in Example 1 was replaced by 0.4 parts by weight.

[0077] Table 1 lists the performance test data of the above lubricating oil compositions I, II, III, IV, V and VI.

[0078] The performance test data of table 1 lubricating oil composition I, II, III, IV, V and VI

[0079]

[0080] In Example 1 of the present invention, fatty acids and alkylsilanes, that is, dodecyltrimethoxysilane, have significant dispersion-promoting and dissolution-promoting effects after they are coordinated together, and the hydrophilic fumed silica can be uniformly and stably dissolved to In lubricating oils, a clear liquid is formed.

[0081] However, only alkylsilanes were added to the lubricating oil composition of Comparative Example 1, and other types of silanes were used instead of alkylsilanes in the lubricating oil composition III o...

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Abstract

The invention provides a lubricating oil composition and a preparation method thereof. The lubricating oil composition is prepared from the following components: (a) base oil, (b) fatty acid, (c) alkylsilane and (d) hydrophilic fumed silica, wherein, counted on the basis that the total mass of the base oil (a) is 100 percent, the addition amount of the fatty acid (b) is 0.1 to 3 percent by mass, and is preferably 0.3 to 2 percent by mass; the addition amount of the alkylsilane (c) is 0.1 to 1 percent by mass, and is preferably 0.5 to 1 percent by mass; the addition amount of the hydrophilic fumed silica (d) is 0.3 to 6 percent by mass, and is preferably 0.5 to 3 percent by mass. The lubricating oil composition provided by the invention has excellent wear-reduction, anti-abrasion, extreme-pressure, anti-oxidation, viscosity-temperature and corrosion-prevention performance, is excellent in overall performance, and can be applicable to the lubrication of a device under various loads; the abrasion and the friction of the device can be greatly lightened; the energy consumption is reduced; the service life is prolonged. The preparation method of the lubricating oil composition, which is provided by the invention, is simple, and is suitable for industrialized production; raw materials are easily obtained.

Description

technical field [0001] The invention relates to a lubricating oil composition and a preparation method thereof, belonging to the field of lubricating oils. Background technique [0002] Solid lubricants have strong anti-load and anti-wear properties, which can effectively reduce the friction and wear of friction pairs; when lubricating oil is subjected to high loads, the liquid oil film will be destroyed, and it will lose its lubricating ability at high temperatures, while solid lubricants It has high temperature resistance and can maintain lubrication at high temperatures above 1000 °C. In addition, solid lubricants can lubricate both chemical machinery in a severely corrosive gas environment and aerospace machinery subject to strong radiation, so its application has also been developed rapidly. [0003] Patent application document CN105296057A discloses a lubricating oil composition, including a lubricating carrier oil and a solid lubricant-copper-based composite powder m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/10C10N30/12C10N30/02
CPCC10M169/04C10M2201/10C10M2203/1025C10M2205/0285C10M2207/126C10M2207/128C10M2207/2835C10M2227/04C10N2030/02C10N2030/06C10N2030/10C10N2030/12C10N2030/72
Inventor 范海粉王瑞兴
Owner SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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