CN111996062A - MXene/MoS2Preparation of novel nano lubricant - Google Patents
MXene/MoS2Preparation of novel nano lubricant Download PDFInfo
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- CN111996062A CN111996062A CN201910459993.1A CN201910459993A CN111996062A CN 111996062 A CN111996062 A CN 111996062A CN 201910459993 A CN201910459993 A CN 201910459993A CN 111996062 A CN111996062 A CN 111996062A
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- 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
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- 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
- C10M2201/061—Carbides; Hydrides; Nitrides
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- 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
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Abstract
The invention discloses MXene/MoS2Novel nano-lubricant consisting of flaky molybdenum disulfide (MoS)2) Is compounded with Mxene, and specifically introduces an MXene/MoS2A preparation method of a novel nano lubricant and application in the field of friction lubrication. The preparation process is easy to operate and suitable for large-scale production, and the material is used as a lubricant applied to the field of friction lubrication, so that the abrasion degree between friction pieces is effectively improved, and the service life of the friction pieces is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of lubricating friction materials, in particular to MXene/MoS2Composite material, method of preparation and friction application.
Background
MXene is a two-dimensional metal carbide or nitride material with a two-dimensional sheet structure similar to graphene. Can be prepared by etching the corresponding MAX phase, which is a generic name for ternary layered compounds and is generally given by the formula Mn+ 1AXnWherein M is a transition metal, a is a group III, IV element, X is C or N, N is 1, 2, 3, etc. In the MAX phase structure, M atoms and A atomic layers are alternately arranged to form a close-packed hexagonal layered structure, X atoms are filled in octahedral gaps, and an M-A bond has a metal bond characteristic and is weaker than an M-X bond acting force. MXene also exhibits excellent physicochemical properties in many respects due to its unique structure, such as: has high specific surface area, good chemical stability, excellent conductivity and hydrophilicity. MXene is applied to a plurality of fields, such as the technical fields of photoelectrocatalysis, energy storage, environmental pollution control, liquid crystal display and the like, and has certain application value in the technical field of friction lubrication. But lubrication by MXene as a single lubricantThe effect is yet to be further improved. We have then appreciated that transition metal sulfides are attractive materials for research in the field of photovoltaic technology because of their relatively high theoretical capacity and relatively low cost. However, the technical field of lubricating friction is rarely reported, so that an MXene/MoS is designed2The novel lubricating composite material has excellent application prospect in the technical field of lubricating friction.
Disclosure of Invention
The invention makes corresponding improvement aiming at the defects in the prior art, and mainly aims to provide MXene/MoS2The composite material and the preparation method thereof are used as a lubricant applied to the field of friction lubrication, so that the wear degree between friction parts is effectively improved, and the service life of the friction parts is greatly prolonged.
The invention provides MXene/MoS2Composite material and its preparation method and application.
The first purpose of the invention is to introduce MXene/MoS2A composite material.
MXene/MoS2The composite material is characterized in that the flaky molybdenum disulfide is uniformly adhered to MXene, when the composite structure material is used for friction and abrasion, the characteristic of large surface area of the peeled MXene can be fully utilized, the compounding between the flaky molybdenum disulfide and the MXene is convenient, and the flaky MoS can be utilized2Good lubricating properties of; thus, the composite structural material can be significantly mitigated.
Mxene/MoS2The composite material has the mass ratio of the flaky molybdenum disulfide to MXene of 1: 0.8-1, and the flaky molybdenum disulfide is uniformly adhered to the MXene.
Further, the mass ratio of the flaky molybdenum disulfide to MXene is 1: 0.8-1.
MXene/MoS2The synthetic method of the composite material comprises the following steps:
1) pre-polymer titanium aluminium carbide (Ti)3AlC2) Stripping with hydrofluoric acid:
pouring 0.5-2g of precursor titanium aluminum carbide into a beaker filled with 5-20ml of hydrofluoric acid, stirring, carrying out ultrasonic cleaning after the reaction is finished for 2-4h, collecting the precipitate, cleaning for several times by using deionized water until the pH reaches (6-8), drying, grinding for later use; MXene material is obtained.
2) Adding (0.4-0.8g) MXene obtained in step (1) into a reaction kettle, and then adding (0.5-1g) Na2MoO4·2H2O, (0.5-1g) hydroxylamine chloride, (1-1.5g) thiourea and (40-80ml) deionized water to obtain a mixed solution, stirring for 1-3h, then adding (0.15-0.2g) CTAB, stirring for 30-60min, putting into a drying oven for reaction, after the heat preservation is finished (24-48 h), collecting the precipitate, then washing the precipitate with water and ethanol for 3-5 times, finally performing centrifugal washing, and drying in vacuum at 60-80 ℃.
In the step (1), the ratio of the precursor titanium aluminum carbide to the hydrofluoric acid is (0.5-2mg) to (5-15 mL).
In the step (2), the temperature of the hydrothermal reaction is 160-200 ℃, and the time is 24-48 hours; the ultrasonic treatment time is 30-60 min.
In the step (2), MXene and Na are contained in the mixed solution2MoO4·2H2The mass of O, hydroxylamine chloride and thiourea is 0.5-2g, 0.5-1g, 0.4-1g and 1.5-1.8g respectively; the volume of water in the aqueous solution is 40-80 mL.
MXene/MoS prepared by the invention2The composite material is applied to friction and wear.
Has the advantages that:
(1) MXene/MoS prepared by the invention2Composite material, sheet-like MoS2Can be uniformly attached to MXene.
(2) MXene/MoS prepared by the invention2The composite material can improve the surface contact area of the molybdenum disulfide in the friction and wear process and can also utilize the related metal characteristics of MXene.
(3) MXene/MoS2The composite material may be applied to frictional wear with a lubricant.
Drawings
FIG. 1 is a sheet-like MoS obtained in example 1 of the present invention2Scanning electron microscope photo of the surface of the/MXene composite material.
FIG. 2 is a drawing of the present inventionExample 2 sheet-like MoS2Scanning electron microscope photo of the surface of the/MXene composite material.
FIG. 3 shows a sheet-like MoS obtained in example 3 of the present invention2the/MXene composite material and the friction wear graph.
FIG. 4 shows a sheet-like MoS obtained in example 4 of the present invention2Friction wear pattern of (a).
FIG. 5 is a graph showing the frictional wear of MXene obtained in example 5 of the present invention.
FIG. 6 shows a sheet-like MoS obtained in example 6 of the present invention2the/MXene composite material and the friction wear graph.
FIG. 7 shows MoS obtained in examples 4 and 5 of the present invention2And MXene friction coefficient map.
Detailed description of the preferred embodiments
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
Pouring a precursor titanium aluminum carbide into a beaker filled with hydrofluoric acid, wherein the ratio of the precursor titanium aluminum carbide to the hydrofluoric acid is 0.5 g: 5 ml; stirring for 1 hour; collecting the precipitate after the reaction is finished, and ultrasonically cleaning the precipitate by using deionized water to ensure that the pH value reaches 6; drying and grinding for later use; MXene material is obtained.
Adding the MXene material treated in the step into a reaction kettle, and then adding Na2MoO4·2H2O, hydroxylamine chloride and thiourea and an aqueous solution of MXene material, Na2MoO4·2H2The mass of O, hydroxylamine chloride and thiourea was 0.5g, 0.5g, 0.4g and 1.5g, respectively. Wherein the deionized water is 50 ml; stirring for 1h at normal temperature; adding 0.15g CTAB, stirring for 30min, placing in a drying oven for reaction at 160 deg.C for 24 hr, collecting precipitate after heat preservation, cleaning with water and ethanol for 3 times, centrifuging, and vacuum drying at 80 deg.C. Sample 1 was obtained as shown in FIG. 1.
Example 2:
pouring a precursor titanium aluminum carbide into a beaker filled with hydrofluoric acid, wherein the ratio of the precursor titanium aluminum carbide to the hydrofluoric acid is 2 g: 15 ml; stirring for 1 hour; collecting precipitate after the reaction is finished, and ultrasonically cleaning the precipitate by using deionized water to ensure that the pH value reaches 8; drying and grinding for later use; MXene material is obtained.
Adding the MXene material treated in the step into a reaction kettle, and then adding Na2MoO4·2H2O, hydroxylamine chloride and thiourea and an aqueous solution of MXene material, Na2MoO4·2H2The mass of O, hydroxylamine chloride and thiourea was 2g, 1g, 1g and 1.8g, respectively. Wherein the deionized water is 50 ml; stirring for 1h at normal temperature; then adding 0.2g CTAB, stirring for 60min, placing into a drying oven for reaction at 200 deg.C for 48h, collecting precipitate after heat preservation, washing the precipitate with water and ethanol for 5 times, centrifuging, and vacuum drying at 100 deg.C. Sample 2 was obtained as shown in FIG. 2.
Example 3:
0mg, 7mg, 10mg, 30mg, 50mg and 70mg of Mxene/MoS are weighed respectively2Adding the mixture into 1g of paraffin base oil, and performing ultrasonic dispersion for two hours; after the sample is completely dissolved in the paraffin oil, the Mxene/MoS is dissolved in the paraffin oil2Carrying out friction performance test on the paraffin base oil of the sample; zeroing a steel sheet with the diameter of 2cm and without paraffin oil, dropping 2-3 paraffin oil drops on the middle position of the steel sheet after the friction coefficient is stable, and starting to test the friction performance under the experimental conditions of the load of 5N and the rotating speed of 300 r/min. Pure paraffin oil was used as a control, as shown in FIG. 3.
Example 4:
0mg, 7mg, 10mg, 30mg, 50mg, 70mg of MoS were weighed out separately2Adding the mixture into 1g of paraffin base oil, and performing ultrasonic dispersion for two hours; after the sample is completely dissolved in the paraffin oil, the MoS is dissolved in the paraffin oil2Carrying out friction performance test on the paraffin base oil of the sample; zeroing a steel sheet with the diameter of 2cm and without paraffin oil, dropping 2-3 paraffin oil drops on the middle position of the steel sheet after the friction coefficient is stable, and starting to test the friction performance under the experimental conditions of the load of 5N and the rotating speed of 300 r/min. Wherein the pure paraffin oil is used as a reference,as shown in fig. 4.
Example 5:
respectively weighing 0mg, 7mg, 10mg, 30mg, 50mg and 70mg of Mxene, adding into 1g of paraffin base oil, and ultrasonically dispersing for two hours; after the sample is completely dissolved in the paraffin oil, the Mxene/MoS is dissolved in the paraffin oil2Carrying out friction performance test on the paraffin base oil of the sample; zeroing a steel sheet with the diameter of 2cm and without paraffin oil, dropping 2-3 paraffin oil drops on the middle position of the steel sheet after the friction coefficient is stable, and starting to test the friction performance under the experimental conditions of the load of 5N and the rotating speed of 300 r/min. With pure paraffin oil as a control, as shown in figure 5.
Example 6:
0mg, 7mg, 10mg, 30mg, 50mg and 70mg of Mxene/MoS are weighed respectively2Adding the mixture into 1g of paraffin base oil, and performing ultrasonic dispersion for two hours; after the sample is completely dissolved in the paraffin oil, the Mxene/MoS is dissolved in the paraffin oil2Carrying out friction performance test on the paraffin base oil of the sample; zeroing a steel sheet with the diameter of 2cm and without paraffin oil, dropping 2-3 paraffin oil drops on the middle position of the steel sheet after the friction coefficient is stable, and starting to test the friction performance under the experimental conditions of the load of 10N and the rotating speed of 600 r/min. With pure paraffin oil as a control, as shown in figure 6.
Claims (7)
1. MXene/MoS2The novel nano lubricant is characterized in that: in the composite material, sheet-shaped MoS2The mass ratio of the MoS to MXene is 1: 0.8-12Uniformly attached to the surface of MXene.
2. MXene/MoS according to claim 12Composite material, characterized in that in the composite material, the sheet-like MoS2The mass ratio of the MXene to the MXene is 1: 0.8-1.
3. MXene/MoS according to claim 12The synthetic method of the composite material is characterized by comprising the following steps:
1) pre-polymer titanium aluminium carbide (Ti)3AlC2) Stripping with hydrofluoric acid:
pouring 0.5-2g of precursor titanium aluminum carbide into a beaker filled with 5-20ml of hydrofluoric acid, stirring for 2-4h, carrying out ultrasonic cleaning after the reaction is finished, collecting precipitates, cleaning for 3-5 times by using deionized water to enable the pH to reach 6-8, drying, and grinding for later use; MXene material is obtained.
2) MXene (0.4-0.8g) obtained in step (1) was added to a reaction kettle, followed by addition (0.5-1g) of Na2MoO4·2H2O, (0.5-1g) hydroxylamine chloride and (1-1.5g) thiourea are added into (40-80ml) deionized water to obtain a mixed solution, ultrasonic stirring is carried out for 1-3h, then (0.15-0.2g) CTAB (cetyl trimethyl ammonium bromide) is added, stirring is carried out for 30-60min, the mixed solution is placed into a drying box for reaction (24-48 h), after heat preservation is finished, precipitate is collected, then the precipitate is washed by water and ethanol for 3-5 times, finally centrifugal washing is carried out, and vacuum drying is carried out at 60-80 ℃.
4. MXene/MoS according to claim 32The synthesis method of the composite material is characterized in that in the step (1), the ratio of the precursor titanium aluminum carbide to the hydrofluoric acid is (0.5-2g) to (5-20 mL).
5. MXene/MoS according to claim 32The synthesis method of the composite material is characterized in that in the step (1), the temperature of the hydrothermal reaction is 160-200 ℃, and the time is 24-48 hours; the ultrasonic time is 30-60 min.
6. MXene/MoS according to claim 32The method for synthesizing the composite material is characterized in that MXene and Na are contained in the mixed solution in the step (2)2MoO4·2H2The mass of O, hydroxylamine chloride and thiourea is 0.4-0.8g, 0.5-1g, 0.5-1g and 1-1.5g respectively; the volume of water added to the mixed solution is 40-80 mL.
7. The MXene/MoS of claim 12The composite material can be used as a lubricating friction agent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113801533A (en) * | 2021-02-05 | 2021-12-17 | 中国科学院兰州化学物理研究所 | Dry film lubricant based on dopamine modified pigment filler and application thereof |
| CN114479453A (en) * | 2021-12-20 | 2022-05-13 | 西安理工大学 | Preparation method of MXene-based hyperbranched polysiloxane reinforced resin composite material |
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2019
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Patent Citations (3)
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| CN106590815A (en) * | 2016-11-30 | 2017-04-26 | 江苏大学 | Preparation method of g-C3N4/MoS2 nano composite material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113801533A (en) * | 2021-02-05 | 2021-12-17 | 中国科学院兰州化学物理研究所 | Dry film lubricant based on dopamine modified pigment filler and application thereof |
| CN113801533B (en) * | 2021-02-05 | 2022-03-01 | 中国科学院兰州化学物理研究所 | Dry film lubricant based on dopamine modified pigment filler and application thereof |
| CN114479453A (en) * | 2021-12-20 | 2022-05-13 | 西安理工大学 | Preparation method of MXene-based hyperbranched polysiloxane reinforced resin composite material |
| CN114479453B (en) * | 2021-12-20 | 2024-08-23 | 忠信世纪电子材料(始兴)有限公司 | Preparation method of MXene-based hyperbranched polysiloxane reinforced resin composite material |
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