CN112779074B - Lubricant as well as preparation method and application thereof - Google Patents
Lubricant as well as preparation method and application thereof Download PDFInfo
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- CN112779074B CN112779074B CN202110058566.XA CN202110058566A CN112779074B CN 112779074 B CN112779074 B CN 112779074B CN 202110058566 A CN202110058566 A CN 202110058566A CN 112779074 B CN112779074 B CN 112779074B
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- 239000000314 lubricant Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 88
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 78
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 21
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 20
- 238000005406 washing Methods 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 58
- 239000002245 particle Substances 0.000 claims description 38
- 239000000377 silicon dioxide Substances 0.000 claims description 29
- 235000012239 silicon dioxide Nutrition 0.000 claims description 18
- 241000252506 Characiformes Species 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 abstract description 18
- 239000008367 deionised water Substances 0.000 abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 abstract description 11
- 238000003756 stirring Methods 0.000 abstract description 10
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 4
- 238000001132 ultrasonic dispersion Methods 0.000 abstract description 4
- 238000001192 hot extrusion Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 12
- 235000019441 ethanol Nutrition 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/22—Compounds containing sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/105—Silica
Abstract
The invention discloses a lubricant, a preparation method and application thereof. The steps for preparing the lubricant of the present invention include: adding molybdenum disulfide into a strong oxidizing solution, continuously stirring for a certain time, and then washing and drying; adding deionized water into the treated molybdenum disulfide, performing ultrasonic dispersion, roughly preparing a suspension, mixing the suspension with absolute ethyl alcohol, adding tetraethoxysilane and ammonia water, starting reaction at a certain temperature, and reacting for several hours under electromagnetic stirring; and separating the reaction product, washing the reaction product with absolute ethyl alcohol for a plurality of times, washing the reaction product with deionized water for a plurality of times, and then drying the reaction product in vacuum to obtain the lubricant. The lubricant prepared by the method can be used as a lubricant for processing metal materials such as hot extrusion and the like, and the method has the characteristics of simple process, easily obtained raw materials, low cost, good lubricating property and the like.
Description
Technical Field
The invention belongs to the technical field of lubricating materials, and particularly relates to a lubricant, and a preparation method and application thereof.
Background
Molybdenum disulfide is taken as a typical binary transition metal compound and has a graphene-like junctionAnd a covalent bond is formed between Mo and S atoms in the layer, so that the structure is stable. With the rapid development of science and technology, moS 2 Nanomaterials have important applications in many areas, such as: lubricants, catalysts, coating materials, electron probes, and the like; in addition, moS 2 Is a P-type narrow-band-gap semiconductor nano material, and is also widely applied to the aspects of solar cells, photoelectric devices and the like. Molybdenum disulfide overcomes the defects of the zero-band-gap graphene material by virtue of unique structural properties, and simultaneously has a plurality of advantages, and has huge potential in a plurality of fields, but the research of the novel molybdenum disulfide nano material has a plurality of scientific problems to be solved.
MoS 2 The lubricating oil is widely applied to lubrication as a solid lubricant due to good lubricating property, but is difficult to play a role in lubrication of a plurality of metal material processing techniques due to easy oxidation failure at high temperature.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a lubricant, a preparation method and application thereof, so as to solve the problem that molybdenum disulfide is easy to oxidize in the lubricant.
In order to solve the technical problems, the invention is realized by the following technical scheme.
The lubricant is of a core-shell structure and comprises a core and a shell, wherein the core is molybdenum disulfide particles, and the shell is silicon dioxide coated outside the molybdenum disulfide particles.
Preferably, in the lubricant, the volume percentage of the molybdenum disulfide particles is 40-60%, the volume percentage of the silicon dioxide is 60-40%, and the particle size of the lubricant is 0.2-0.4 μm.
The preparation method of the lubricant comprises the following steps:
preparing a silica shell on the surface of the molybdenum disulfide particles with hydroxylated surfaces to obtain the lubricant.
Preferably, the molybdenum disulfide is added into the piranha solution for reaction, and after the reaction is finished, the molybdenum disulfide is washed and dried to obtain the surface hydroxylated molybdenum disulfide particles.
Preferably, the reaction time of the molybdenum disulfide and the piranha solution is 5-10min, and the molybdenum disulfide and the piranha solution are continuously stirred in the reaction process.
Preferably, the process for preparing a silica shell on the surface of the surface hydroxylated molybdenum disulfide particles comprises:
mixing the suspension of the molybdenum disulfide particles with hydroxylated surfaces with ethanol, and adding tetraethoxysilane and ammonia water for reaction; and after the reaction is finished, carrying out solid-liquid separation, and washing and drying the obtained solid to obtain the lubricant.
Preferably, the volume ratio of the ethanol to the water in the suspension of the surface hydroxylated molybdenum disulfide particles is (2-5): 1, the dosage proportion of the molybdenum disulfide particles with hydroxylated surfaces, ammonia water and ethyl orthosilicate satisfies the following relationship: and correspondingly adding 20-40 ml of ammonia water and 15-35 ml of ethyl orthosilicate into each gram of the molybdenum disulfide particles with the hydroxylated surfaces, wherein the mass percentage of the solute of the ammonia water is 25-28%.
Preferably, the reaction temperature of the molybdenum disulfide particles with surface hydroxylation, ethanol, ethyl orthosilicate and ammonia water is room temperature, and the reaction time is 6-24 hours.
Preferably, the resulting solid is dried under vacuum to remove water.
The lubricant of the invention can be applied to extrusion lubrication.
The invention has the following beneficial effects:
the structure of the lubricant is a core-shell structure, wherein the core is molybdenum disulfide particles, the shell is silicon dioxide coated outside the molybdenum disulfide particles, and the friction coefficient of the lubricant is reduced and the compression resistance and wear resistance are enhanced through the coating of the silicon dioxide on the molybdenum disulfide particles and the synergistic effect of the silicon dioxide and the nano molybdenum disulfide; and the melting point of the silicon dioxide is high, and the coated molybdenum disulfide is not easy to oxidize, so that the molybdenum disulfide particles in the lubricant are not easy to oxidize and lose efficacy at high temperature, and can play a good lubricating role. In conclusion, the lubricant disclosed by the invention solves the problem of oxidative decomposition of molybdenum disulfide under a high-temperature working condition.
In the preparation method of the lubricant, the silicon dioxide shell is prepared on the surface of the molybdenum disulfide particles with hydroxylated surfaces, so that the silicon dioxide is easier to coat the surface of the molybdenum disulfide particles. In the preparation method, the composite material generated by the reaction does not need to be sintered at high temperature, so that the oxidation failure of the molybdenum disulfide during roasting is prevented. The silicon dioxide is used for coating the surface of the molybdenum disulfide, so that the molybdenum disulfide is prevented from decomposing and losing efficacy at high temperature in the processing process of metal materials such as hot extrusion.
Further, adding molybdenum disulfide into the piranha solution for reaction, and washing and drying after the reaction is finished to obtain the surface hydroxylated molybdenum disulfide particles. The piranha solution is a mixed solution of hydrogen peroxide and concentrated sulfuric acid, has strong oxidizability, and can remove most impurities on the surface of the molybdenum disulfide and hydroxylate the surface of the molybdenum disulfide by treating the surface of the molybdenum disulfide with the piranha solution.
Further, the process for preparing the silica shell on the surface of the surface-hydroxylated molybdenum disulfide particles comprises the following steps: mixing the suspension of the molybdenum disulfide particles with hydroxylated surfaces with ethanol, and adding tetraethoxysilane and ammonia water for reaction; and after the reaction is finished, carrying out solid-liquid separation, and washing and drying the obtained solid to obtain the lubricant. The tetraethoxysilane can be hydrolyzed and condensed under the acidic and alkaline environment, and the hydrolysis and condensation reaction are a pair of competitive reactions. Under the same concentration and acidic condition, the hydrolysis speed is higher than the polycondensation speed; under alkaline conditions, the rate of polycondensation is greater than the rate of hydrolysis. The invention selects alkaline condition, and provides hydroxide radical by ammonia water. The low reaction temperature, the alkaline reaction environment, the low ethyl orthosilicate concentration and the high hydrophilicity of the nucleation interface are favorable for the non-spontaneous nucleation process, so that the nucleation is formed on the existing interface.
Furthermore, the volume ratio of the ethanol to the water in the suspension of the molybdenum disulfide particles with hydroxylated surfaces is (2-5): 1, the dosage proportion of the molybdenum disulfide particles with hydroxylated surfaces, ammonia water and ethyl orthosilicate satisfies the following relationship: and correspondingly adding 20-40 ml of ammonia water and 15-35 ml of ethyl orthosilicate into each gram of the molybdenum disulfide particles with the hydroxylated surfaces, wherein the mass percentage of the solute of the ammonia water is 25-28%. Only one part of the raw material of the tetraethoxysilane participates in the reaction, the utilization rate is greatly changed along with the ratio of the feeding concentration of the tetraethoxysilane, and if the feeding concentration is high, the loss rate of the tetraethoxysilane is high and the utilization rate is lower.
Drawings
FIG. 1 is a field emission electron microscope (TEM) image of the silica-coated molybdenum disulfide composite prepared in example 1,
FIG. 2 is a field emission projection electron microscope (TEM) image of the silica-coated molybdenum disulfide composite prepared in example 2,
fig. 3 is a field emission projection electron microscope (TEM) image of the silica-coated molybdenum disulfide composite prepared in example 3.
Detailed Description
The invention is further described below with reference to the figures and examples.
The preparation method of the lubricant comprises the following steps:
(1) Adding molybdenum disulfide into the piranha solution, continuously stirring for 5-10min, and then washing and drying to obtain surface hydroxylated molybdenum disulfide particles;
(2) Ultrasonically dispersing the surface-hydroxylated molybdenum disulfide particles obtained in the step (1) in deionized water to prepare a suspension, mixing the suspension with absolute ethyl alcohol, adding tetraethoxysilane and ammonia water, starting reaction at a certain temperature, and reacting for 6-24 hours under electromagnetic stirring;
(3) And (3) after the reaction in the step (2) is finished, separating the reaction product in the step (2), washing the reaction product with absolute ethyl alcohol and deionized water in sequence, and then carrying out vacuum drying to obtain the silicon dioxide-coated molybdenum disulfide composite material (namely the lubricant of the invention).
In the piranha solution adopted by the invention, the volume ratio of concentrated sulfuric acid to hydrogen peroxide is 3:1. the volume ratio of the ethanol to the deionized water in the step (2) is 2:1, the dosage proportion of the molybdenum disulfide, ammonia water and ethyl orthosilicate in the step (2) is 1g: 20-40 ml: 15-35 ml. The reaction temperature in the step (2) is 25 ℃, and the reaction time is 6-24 hours.
According to the invention, after the molybdenum disulfide is pretreated by the strong oxidation solution, the surface of the molybdenum disulfide is hydroxylated and is easier to coat. The silicon dioxide coated molybdenum disulfide composite material prepared by the invention has better dispersibility in a lubricant and is not easy to agglomerate. The composite material generated by the reaction does not need to be sintered at high temperature, so that the oxidation failure of the molybdenum disulfide during roasting is prevented. The silicon dioxide is used for coating the surface of the molybdenum disulfide, so that the molybdenum disulfide is prevented from decomposing and losing efficacy at high temperature in the processing process of metal materials such as hot extrusion. The coated molybdenum disulfide has good dispersibility in the lubricant, stable property and difficult decomposition.
When the lubricant is used as an additive in other lubricants, the molybdenum disulfide particles are wrapped by the silicon dioxide, so that the dispersibility of the molybdenum disulfide in the lubricant is promoted, the agglomeration phenomenon is avoided, the lubricant can be better applied, and the integral high-temperature service capacity of the lubricant can be improved.
Example 1
The preparation method of the lubricant of the embodiment comprises the following steps:
(1) Adding 0.003g of molybdenum disulfide powder into the prepared piranha solution, continuously stirring for 5min, washing and drying;
(2) Adding 15ml of deionized water into the molybdenum disulfide treated in the step (1), performing ultrasonic dispersion for 10min to prepare a suspension roughly, mixing the suspension with 30ml of absolute ethanol, adding 0.3ml of tetraethoxysilane and 0.5ml of ammonia water, starting reaction at 25 ℃, and reacting for 16 hours under electromagnetic stirring;
(3) And (3) separating the reaction product, washing the reaction product with absolute ethyl alcohol for 2 times, then washing the reaction product with deionized water for 2 times, and then drying the reaction product in vacuum to obtain the silicon dioxide-coated molybdenum disulfide composite material (namely the lubricant of the invention).
Fig. 1 is a transmission electron microscope image of the silica-coated molybdenum disulfide composite material prepared in example 1 of the method of the present invention. The molybdenum disulfide powder wraps SiO with the thickness of about 30nm 2 And the coating is compact and continuous, and the thickness is uniform.
Example 2
The preparation method of the lubricant of the embodiment comprises the following steps:
(1) Adding 0.003g of molybdenum disulfide powder into the prepared piranha solution, continuously stirring for 5min, washing and drying;
(2) Adding 10ml of deionized water into the molybdenum disulfide treated in the step (1), performing ultrasonic dispersion for 10min to prepare a suspension roughly, mixing the suspension with 20ml of absolute ethanol, adding 0.8ml of tetraethoxysilane and 0.6ml of ammonia water, starting reaction at 25 ℃, and reacting for 6 hours under electromagnetic stirring;
(3) And (3) separating the reaction product, washing the reaction product with absolute ethyl alcohol for 2 times, then washing the reaction product with deionized water for 2 times, and then drying the reaction product in vacuum to obtain the silicon dioxide-coated molybdenum disulfide composite material (namely the lubricant of the invention).
Fig. 2 is a transmission electron microscope image of the silica-coated molybdenum disulfide composite material prepared in example 2 of the method of the present invention. The coating layer is compact and continuous, and the thickness is uniform. And the coating layer is relatively thin, so that the morphological characteristics of the molybdenum disulfide are maintained.
Example 3
The preparation method of the lubricant of the embodiment comprises the following steps:
(1) Adding 0.02g of molybdenum disulfide powder into the prepared piranha solution, continuously stirring for 10min, washing and drying;
(2) Adding 20ml of deionized water into the molybdenum disulfide treated in the step (1), performing ultrasonic dispersion for 10min to prepare a suspension roughly, mixing the suspension with 40ml of absolute ethanol, adding 2.0ml of tetraethoxysilane and 1.0ml of ammonia water, starting reaction at 25 ℃, and reacting for 24 hours under electromagnetic stirring;
(3) And (3) separating the reaction product, washing the reaction product with absolute ethyl alcohol for 2 times, then washing the reaction product with deionized water for 2 times, and then drying the reaction product in vacuum to obtain the silicon dioxide-coated molybdenum disulfide composite material (namely the lubricant of the invention).
Fig. 3 is a transmission electron microscope image of the silica-coated molybdenum disulfide composite material prepared in example 3 of the method of the present invention. The coating layer is relatively thin, and the thickness is uniform and continuous. The morphological characteristics of the molybdenum disulfide are maintained.
Claims (6)
1. The lubricant is characterized by comprising a core and a shell, wherein the core is a molybdenum disulfide particle, and the shell is silicon dioxide coated outside the molybdenum disulfide particle;
in the lubricant, by volume percentage, the volume of molybdenum disulfide particles accounts for 40-60%, the volume of silicon dioxide accounts for 60-40%, and the particle size of the lubricant is 0.2-0.4 μm;
the preparation method of the lubricant comprises the following steps:
preparing a silica shell on the surface of the molybdenum disulfide particles with hydroxylated surfaces to obtain the lubricant;
adding molybdenum disulfide into the piranha solution for reaction, and washing and drying after the reaction is finished to obtain the surface hydroxylated molybdenum disulfide particles;
the reaction time of the molybdenum disulfide and the piranha solution is 5-10min, and the molybdenum disulfide and the piranha solution are continuously stirred in the reaction process.
2. The lubricant of claim 1, wherein the process of preparing the silica shell on the surface of the surface hydroxylated molybdenum disulfide particles comprises:
mixing the suspension of the molybdenum disulfide particles with hydroxylated surfaces with ethanol, and adding tetraethoxysilane and ammonia water for reaction; and after the reaction is finished, carrying out solid-liquid separation, and washing and drying the obtained solid to obtain the lubricant.
3. The lubricant according to claim 2, wherein the volume ratio of ethanol to water in the suspension of surface hydroxylated molybdenum disulfide particles is (2 to 5): 1, the dosage proportion of the molybdenum disulfide particles with hydroxylated surfaces, ammonia water and ethyl orthosilicate satisfies the following relationship: and correspondingly adding 20-40 ml of ammonia water and 15-35 ml of ethyl orthosilicate into each gram of the molybdenum disulfide particles with the hydroxylated surfaces, wherein the mass percentage of the solute of the ammonia water is 25% -28%.
4. The lubricant of claim 2, wherein the reaction temperature is room temperature and the reaction time is 6 to 24 hours.
5. The lubricant of claim 2, wherein the resulting solid is vacuum dried to remove moisture.
6. Use of the lubricant according to any one of claims 1-5 for extrusion lubrication.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003000831A1 (en) * | 2001-06-20 | 2003-01-03 | Dow Corning Asia Ltd. | Poly alpha olefin grease composition |
| CN105800697A (en) * | 2016-03-14 | 2016-07-27 | 西安建筑科技大学 | Laminated MoS2-Fe3O4 nano composite material and preparation method thereof |
| RU2690259C1 (en) * | 2018-05-19 | 2019-05-31 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Method of producing nanocomposite coating from silicon dioxide with nanoparticles of molybdenum disulphide |
| CN111410230A (en) * | 2020-02-18 | 2020-07-14 | 天津大学 | Graphene/molybdenum disulfide composite material and liquid phase preparation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO121397B1 (en) * | 2001-04-11 | 2007-04-30 | Sumitomo Metal Industries, Ltd. | Threaded joint for steel pipes |
| CN102412394B (en) * | 2011-10-20 | 2013-10-09 | 浙江大学 | Preparation method of lamellar stannic sulfide/silicon oxide nuclear shell nanorod for lithium battery |
| US9206377B1 (en) * | 2013-02-25 | 2015-12-08 | Leonard P. Warren | Solid lubricant blends for use in lubricating compositions |
| KR102019563B1 (en) * | 2016-11-24 | 2019-09-06 | 숭실대학교산학협력단 | Preparing method of heterojunction structure with large-area monolayer transition metal dicalcogenide via controlling the vaporizing concentration of precursors |
| US20180229299A1 (en) * | 2017-02-15 | 2018-08-16 | The Board Of Trustees Of The University Of Arkansas | Copper-silica core-shell nanoparticles and methods |
| CN108913279A (en) * | 2018-07-26 | 2018-11-30 | 界首市鑫全龙粮食机械购销有限公司 | A kind of modified Nano Molykote of high dispersive and preparation method thereof |
| CN111378520B (en) * | 2019-12-01 | 2022-08-26 | 苏州福瑞斯德新材料科技有限公司 | MoS-containing 2 Water-soluble trace lubricating fluid |
| CN111925668A (en) * | 2020-07-14 | 2020-11-13 | 申雨润滑科技有限公司 | Intercalation inlaid coated oil-soluble molybdenum-based lubricating oil additive and preparation method thereof |
-
2021
- 2021-01-16 CN CN202110058566.XA patent/CN112779074B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003000831A1 (en) * | 2001-06-20 | 2003-01-03 | Dow Corning Asia Ltd. | Poly alpha olefin grease composition |
| CN105800697A (en) * | 2016-03-14 | 2016-07-27 | 西安建筑科技大学 | Laminated MoS2-Fe3O4 nano composite material and preparation method thereof |
| RU2690259C1 (en) * | 2018-05-19 | 2019-05-31 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Method of producing nanocomposite coating from silicon dioxide with nanoparticles of molybdenum disulphide |
| CN111410230A (en) * | 2020-02-18 | 2020-07-14 | 天津大学 | Graphene/molybdenum disulfide composite material and liquid phase preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Xia, Y.等.MoS2 nanosheets modified SiO2 to enhance the anticorrosive and mechanical performance of epoxy coating.2019,132316–327. * |
| 白璞 ; 刘艳娜 ; 孙彦琳 ; 张召述 ; .核壳结构复合微球研究进展.2013,第32卷(第04期),663-667. * |
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