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A modified nano-tungsten disulfide lubricating oil additive and its preparation method
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A tungsten disulfide lubricating oil, tungsten disulfide technology, applied in the field of lubricating oil, can solve the problem of slow reaction between tungsten and liquid sulfur, and achieve the effect of uncomplicated and stable process, good compatibility and narrow particle size distribution
Active Publication Date: 2022-02-18
李立强
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Problems solved by technology
[0006] 2. The reaction between tungsten and liquid sulfur is extremely slow
[0008] At present, tungsten disulfide on the market is powder, which cannot be well dispersed into liquid. It can only be used in the field of paste lubrication, and it has the problem of settling in lubricating oil.
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Embodiment 1
[0050] The invention provides a modified nano-tungsten disulfide lubricating oil additive. The components and mass fraction ratios of the modified nano-tungsten disulfide lubricating oil additive are: modified nano-tungsten disulfide accounts for 3-7%, and other additives And base oil accounts for 93-97%. The final particle size distribution of the product of the present invention is narrow, which overcomes the problem of settling in lubricating oil. The process is not complicated, stable and easy to operate, and can realize stable industrial production.
[0051] Wherein, the raw material composition of described modified nano tungsten disulfide includes:
[0052] Raw material 1: sodium sulfide, deionized aqueous solution, the mass fraction ratio is 1:2.8;
[0053] Raw material 2: tungsten hexachloride powder, its mass fraction ratio to sodium sulfide is 1:1.69
[0054] Raw material 3: silane coupling agent, accounting for 3.5% of the total amount of raw materials;
[0055] ...
Embodiment 2
[0071] A preparation method of a modified nano-tungsten disulfide lubricating oil additive, which comprises the following process steps:
[0072] (1) Preparation of modified nano-tungsten disulfide
[0073] a. Add raw material 1: filtered sodium sulfide deionized water solution into the thermal reaction kettle, then turn on the stirring, raise the temperature to 65-70°C, then add raw material 2 tungsten hexachloride powder into the thermal reaction kettle, and then Add raw material 3 silane coupling agent accounting for 3.5% of the total raw material, and carry out reaction and aging for 2 hours.
[0074] b. After 2 hours, add raw material 4 and carry out a constant temperature reaction for 30 minutes. Dark flocs begin to appear floating on the liquid surface. After 30 minutes, remove the flocs and put them into a cleaning tank, and use deionized water to repeat the process. Wash 2-3 times, form a paste, and control the surface water.
[0075] (2) Preparation of modified nan...
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Abstract
The invention proposes a modified nanometer tungsten disulfide lubricating oil additive and a preparation method thereof, and relates to the technical field of lubricating oil. The components and mass fraction ratios of the modified nanometer tungsten disulfide lubricating oil additive are: modified nanometer tungsten disulfide It accounts for 3-7%, and other additives and base oil account for 93-97%. The preparation method includes the preparation of modified nano-tungsten disulfide, and further the preparation of modified nano-tungsten disulfide lubricating oil additive. The advantage of the present invention is that the process The adjustment and optimization of the product, the final particle size distribution of the product is narrow, which overcomes the problem of sedimentation in the lubricating oil, the process is not complicated, stable and easy to operate, and stable industrial production can be realized.
Description
technical field [0001] The invention belongs to the technical field of lubricating oil, in particular to a modified nano-tungsten disulfide lubricating oil additive and a preparation method thereof. Background technique [0002] Lubricating oil antiwear additives are an important part of modern lubricating oils. Antiwear additives commonly used in lubricating oils include sulfur antiwear agents, phosphorus antiwear agents, sulfur phosphorus antiwear agents, halogen antiwear agents, organometallic antiwear agents and boron antiwear agents. [0003] At present, the annual sales of lubricating grease in the mainland is about 90 billion yuan, of which the automotive oil market accounts for about 60% of the share, which is about 54 billion yuan. By 2017, the number of cars will be 320 million, and the contribution rate to the current smog in China will be about 30%. Such huge carbon monoxide, nitrogen oxides, hydrocarbons, and lead-containing compounds have caused irreversible d...
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