CN111117746A - Preparation of nano MoS by dopamine polymerization2-Al2O3Method for compounding rolling lubricant - Google Patents
Preparation of nano MoS by dopamine polymerization2-Al2O3Method for compounding rolling lubricant Download PDFInfo
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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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- 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
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- 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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- 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
- C10M2201/085—Phosphorus oxides, acids or salts
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- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/046—Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
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Abstract
Preparation of nano MoS by dopamine polymerization2‑Al2O3A method for compositely rolling a lubricant belongs to the technical field of lubrication, and the surface of a molybdenum disulfide nanosheet is modified by utilizing dopamine autopolymerization as polydopamine to obtain a polydopamine modified molybdenum disulfide nanosheet; then adding aluminum chloride hexahydrate, polyethylene glycol 200 and sodium acetate, centrifuging, washing and drying the obtained solution to obtain nano MoS2‑Al2O3Compounding powder; and finally, dispersing the prepared composite nano powder into deionized water, and adding glycerol, triethanolamine, sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a trace amount of defoamer to obtain the required composite rolling lubricant. The invention has simple preparation process, good reproducibility, low cost and high efficiency, is beneficial to batch production, and can replace the prior art to a certain extentThe traditional rolling lubricating oil which has serious environmental pollution is used for process lubrication in the hot rolling process of the plate and strip steel, and promotes energy conservation, emission reduction and environment-friendly production in the rolling process of the plate and strip steel.
Description
Technical Field
The invention relates to lubricationThe technical field is used for process lubrication in the hot rolling process of plate and strip steel, and particularly relates to preparation of nano MoS by dopamine polymerization2-Al2O3A method for compounding rolling lubricants.
Background
The proper process lubrication technology is adopted in the process of rolling and hot rolling the plate strip steel, so that the friction force can be effectively reduced, the rolling force is reduced, the reduction rate is improved, the surface quality is improved, the energy consumption is reduced, and the like. The traditional rolling lubricating oil has serious pollution to the environment, worsens the production environment, has high waste oil treatment cost and does not meet the environmental protection requirements of energy conservation and emission reduction. With the development of nanotechnology in recent years, nanoparticles with unique physical and chemical properties are increasingly applied in the field of process lubrication, and the water-based nano rolling lubricating fluid has very wide development prospect by virtue of the characteristics of excellent friction-reducing and wear-resisting properties, lubricating and cooling properties, energy conservation and environmental protection.
Nano molybdenum disulfide (MoS)2) Is a nano material with a two-dimensional layered structure with larger specific surface area, is easy to slide relatively between layers, has good wear-resistant and antifriction properties, is a solid lubricant and a lubricating additive which are commonly used in the material processing process, and is high-hardness spherical nano α alumina (α -Al)2O3) The nano α aluminum oxide is compounded with the nano α aluminum oxide to obtain a composite nano material, and the composite nano material is added into a water-based rolling lubricant as an additive, so that the lubricating property of the rolling lubricant in the plate and strip steel hot rolling process can be further improved through a synergistic effect while the dispersion stability of the nano particles is ensured, and further the traditional hot rolling lubricant is improved and replaced to a certain extent, thereby promoting the energy conservation and emission reduction and the environmental-friendly production of the plate and strip steel rolling process。
Disclosure of Invention
Aiming at the defects and requirements of the prior art, the invention aims to provide a method for preparing nano MoS by utilizing dopamine polymerization2-Al2O3The preparation method of the composite rolling lubricant is simple and efficient, and the obtained water-based composite nano rolling lubricant has excellent stability, uniformity, cleanness and lubricating property, and can replace the traditional rolling oil and the rolling lubricant containing single nano particles.
To achieve the aim, the method for preparing the nano MoS by polymerizing the dopamine is provided2-Al2O3The preparation method of the composite hot rolling lubricant comprises the following steps:
(1) modifying the surface of a molybdenum disulfide nanosheet by utilizing dopamine autopolymerization as Polydopamine (PDA) to obtain a polydopamine-modified molybdenum disulfide nanosheet (MoS)2-PDA)；
(2) The MoS prepared in the step (1) is used2PDA is added to a sufficient quantity of ethylene glycol to obtain a suspension, followed by stepwise addition of aluminum chloride hexahydrate (AlCl)3·6H2O) and polyethylene glycol 200(PEG-200), magnetically stirring at 60 deg.C for 15-20min for mixing, ultrasonic treating for 14-16min, adding sodium acetate (NaAc), and magnetically stirring at 60 deg.C for 1.5-2.5h to obtain stable and uniform solution. Wherein, MoS2The mass ratio of PDA to aluminum chloride hexahydrate is 1:2-4, and polyethylene glycol 200 and MoS2-mass ratio of PDA 4-6: 1;
(3) transferring the liquid obtained in the step (2) into a polytetrafluoroethylene high-temperature high-pressure reaction kettle, and carrying out hydrothermal reaction at the temperature of 170-190 ℃ for 13-17 h;
(4) washing the product obtained in the step (3) by using absolute ethyl alcohol and deionized water, and then carrying out centrifugal purification and drying to obtain molybdenum disulfide-aluminum oxide composite nano powder;
(5) dispersing the composite nano powder prepared in the step (4) into deionized water, gradually adding glycerol, triethanolamine, sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a trace amount of defoaming agent, magnetically stirring at 50 ℃ for 20-30min, and performing ultrasonic treatment for 10-15min to obtain the water-based hot rolling lubricant with excellent stability and lubricating property. Wherein the mass ratio of the composite nano powder to the sodium hexametaphosphate to the sodium dodecyl benzene sulfonate is 1:0.3-0.5:0.7-0.8, and the mass ratio of the glycerol to the triethanolamine to the water-based borate to the deionized water is 2-4:3-6:0.5: 100.
Further, the preparation method of the polydopamine modified molybdenum disulfide nanosheet in the step (1) is as follows:
a. preparing a triaminomethane buffer solution (Tris) with the concentration of 1.6g/L and the pH value of 8.5;
b. adding nano molybdenum disulfide and dopamine powder into a mixed solution of absolute ethyl alcohol and a Tris buffer solution, and magnetically stirring for 5-6 hours at 60 ℃ to perform reaction, wherein the mass ratio of the molybdenum disulfide to the dopamine is 5:2, and the volume ratio of the absolute ethyl alcohol to the Tris buffer solution is 1: 2;
c. and c, centrifuging the liquid obtained in the step b, washing the product by using absolute ethyl alcohol and deionized water, and drying to obtain the polydopamine modified molybdenum disulfide nanosheet.
Further, in the step c, the centrifugation speed is 6000-.
Further, in the step (2), the rotation speed of the magnetic stirrer is 800-.
Further, in the step (4), the centrifugation speed is 4000-.
Further, in the step (5), the rotation speed of the magnetic stirrer is 600-. The antifoaming agent was added dropwise with stirring until it was foamy.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the invention has simple preparation process, good reproducibility and low cost and high efficiency, is beneficial to batch production, can replace traditional rolling lubricating oil which has serious environmental pollution to a certain extent, is used for process lubrication in the hot rolling process of the plate and strip steel, promotes energy conservation and emission reduction and environment-friendly production in the rolling process of the plate and strip steel, and simultaneously meets the requirement of environmental friendliness.
2. The water-based nano composite hot rolling lubricant prepared by the invention has extremely high dispersion stability, can be stored for a long time without agglomeration and deterioration of particles, expands the application range of a nano lubricating technology, and can be directly used in the hot rolling process of plate and strip steel. The rolling process has no toxic and irritant gases, the application is simple and convenient, the rolling force and the friction coefficient in the rolling process of the plate and strip steel can be obviously reduced, the surface quality of the rolled steel plate is improved, the energy consumption is reduced, and the energy conservation and emission reduction are promoted.
Drawings
FIG. 1 is a four-ball long-grinding test friction coefficient-time curve of the hot rolling lubricants obtained in example 1, example 2 and example 3 of the present invention.
FIG. 2 is a schematic diagram of the wear pattern of a four-ball long wear test of the hot rolling lubricant obtained in example 1 of the present invention.
FIG. 3 is a schematic diagram of the wear pattern of a four-ball long wear test of the hot rolling lubricant obtained in example 2 of the present invention.
FIG. 4 is a schematic diagram of the wear pattern of a four-ball long wear test of the hot rolling lubricant obtained in example 3 of the present invention.
Detailed Description
The present invention will be further described with reference to specific embodiments. The specific examples described in the following embodiments of the present invention are merely illustrative of specific embodiments of the present invention and are intended to further illustrate the present invention and not to limit the present invention.
Example 1
The main components and mass fractions of example 1 are as follows:
| serial number | Component name | Mass fraction/wt.％ |
| 1 | Molybdenum disulfide- |
1 |
| 2 | Glycerol | 5 |
| 3 | Triethanolamine | 6 |
| 4 | Sodium hexametaphosphate | 0.4 |
| 5 | Sodium dodecyl benzene sulfonate | 0.8 |
| 6 | Aqueous boric acid ester | 0.5 |
| 7 | Defoaming agent | 0.1 |
| 8 | Deionized water | 86.2 |
Adding 2.0g of polydopamine modified molybdenum disulfide nanosheet and 100g of ethylene glycol into a beaker, magnetically stirring for 5min, gradually adding 4.0g of aluminum chloride hexahydrate and 10.0g of polyethylene glycol 200, continuously stirring for 20min at 900r/min, and then placing the beaker in 40kHz ultrasonic waves for treatment for 15 min. And then adding 20g of sodium acetate, keeping the temperature and the rotating speed, stirring for 2 hours, transferring the obtained liquid into a high-temperature reaction kettle, heating to 180 ℃, carrying out hydrothermal reaction for 15 hours, centrifuging the product at 5000rpm, washing and drying to obtain the molybdenum disulfide-alumina composite nanoparticles. According to the mass formula of each component shown in the table, 86.2g of deionized water is heated to 50 ℃, and molybdenum disulfide-aluminum oxide nano particles, glycerol and triethanolamine are slowly added at the rotating speed of 750 r/min. After stirring for 18min, the particles are uniformly distributed, sequentially and slowly adding sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a defoaming agent, keeping the rotating speed, continuously stirring for 25min until the liquid is uniform, and finally treating in 40kHz ultrasonic waves for 15min to obtain black suspension liquid, namely the water-based nano rolling lubricating liquid.
The water-based rolling lubricant has good dispersion stability, and has trace precipitation after standing for 7 days, and the precipitation amount is basically unchanged along with the prolonging of time. The precipitate disappears after slight shaking, and the use of the lubricant is not influenced.
Example 2
The main components and mass fractions of example 2 are as follows:
| serial number | Component name | Mass fraction/wt. -%) |
| 1 | Molybdenum disulfide-alumina nanoparticles | 3 |
| 2 | Glycerol | 3 |
| 3 | Triethanolamine | 5 |
| 4 | |
1 |
| 5 | Sodium dodecyl benzene sulfonate | 2.2 |
| 6 | Aqueous boric acid ester | 0.5 |
| 7 | Defoaming agent | 0.1 |
| 8 | Deionized water | 85.2 |
Adding 2.0g of polydopamine modified molybdenum disulfide nanosheet and 100g of ethylene glycol into a beaker, magnetically stirring for 5min, gradually adding 4.0g of aluminum chloride hexahydrate and 8.0g of polyethylene glycol 200, continuously stirring for 20min at 900r/min, and then placing the beaker in 40kHz ultrasonic waves for treatment for 15 min. And then adding 20g of sodium acetate, keeping the temperature and the rotating speed, stirring for 2 hours, transferring the obtained liquid into a high-temperature reaction kettle, heating to 180 ℃, carrying out hydrothermal reaction for 15 hours, centrifuging the product at 4000rpm, washing and drying to obtain the molybdenum disulfide-alumina composite nanoparticles. According to the mass formula of each component shown in the table, 85.2g of deionized water is heated to 50 ℃, and molybdenum disulfide-aluminum oxide nano particles, glycerol and triethanolamine are slowly added at the rotating speed of 650 r/min. After stirring for 15min, the particles are uniformly distributed, sequentially and slowly adding sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a defoaming agent, keeping the rotating speed, continuously stirring for 20min until the liquid is uniform, and finally treating in 40kHz ultrasonic waves for 12min to obtain black suspension liquid, namely the water-based nano rolling lubricating liquid.
The water-based rolling lubricant has good dispersion stability, a little precipitate exists after standing for 7 days, and the precipitation amount is basically unchanged along with the prolonging of time. The precipitate disappears after the light stirring, and the use of the lubricant is not influenced.
Example 3
The main components and mass fractions of example 3 are as follows:
| serial number | Component name | Mass fraction/wt. -%) |
| 1 | Molybdenum disulfide-alumina nanoparticles | 4 |
| 2 | Glycerol | 3 |
| 3 | Triethanolamine | 3 |
| 4 | Sodium hexametaphosphate | 1.5 |
| 5 | Sodium dodecyl benzene sulfonate | 3.2 |
| 6 | Aqueous boric acid ester | 0.5 |
| 7 | Defoaming agent | 0.1 |
| 8 | Deionized water | 84.7 |
Adding 2.0g of polydopamine modified molybdenum disulfide nanosheet and 100g of ethylene glycol into a beaker, magnetically stirring for 5min, gradually adding 6.0g of aluminum chloride hexahydrate and 10.0g of polyethylene glycol 200, continuously stirring for 20min at 1000r/min, and then placing the beaker in 40kHz ultrasonic waves for treatment for 15 min. And then adding 20g of sodium acetate, keeping the temperature and the rotating speed, stirring for 2 hours, transferring the obtained liquid into a high-temperature reaction kettle, heating to 190 ℃, carrying out hydrothermal reaction for 15 hours, centrifuging the product at 4000rpm, washing and drying to obtain the molybdenum disulfide-alumina composite nanoparticles. According to the mass formula of each component shown in the table, 84.7g of deionized water is heated to 50 ℃, and molybdenum disulfide-aluminum oxide nano particles, glycerol and triethanolamine are slowly added at the rotating speed of 800 r/min. After stirring for 20min, uniformly distributing particles, slowly adding sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a defoaming agent in sequence, keeping the rotating speed, continuously stirring for 30min until the liquid is uniform, and finally treating in 40kHz ultrasonic waves for 15min to obtain black suspension liquid, namely the water-based nano rolling lubricating liquid.
The water-based rolling lubricant has good dispersion stability, a little precipitate exists after standing for 5 days, slight layering exists after standing for 7 days, but the precipitation and layering phenomena disappear after stirring, and the use of the lubricant is not influenced.
The performance indexes of the products prepared by the above embodiment are as follows:
the above embodiments are only preferred embodiments of the present invention, but the implementation manner of the present invention is not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, simplifications, which do not depart from the spirit and principle of the present invention, should be regarded as equivalent replacements within the protection scope of the present invention.
Claims (6)
1. Preparation of nano MoS by dopamine polymerization2-Al2O3The method for compounding the rolling lubricant is characterized by comprising the following preparation steps:
(1) modifying the surface of a molybdenum disulfide nanosheet by utilizing dopamine autopolymerization as Polydopamine (PDA) to obtain a polydopamine-modified molybdenum disulfide nanosheet MoS2-PDA；
(2) The MoS prepared in the step (1) is used2PDA is added to a sufficient quantity of ethylene glycol to obtain a suspension, followed by stepwise addition of AlCl hexahydrate3·6H2O and polyethylene glycol 200(PEG-200), magnetically stirring for 15-20min at 60 ℃ for mixing, then ultrasonically treating for 14-16min, then adding sodium acetate NaAc, and magnetically stirring for 1.5-2.5 at 60 ℃ to obtain a stable and uniform solution; wherein, MoS2The mass ratio of PDA to aluminum chloride hexahydrate is 1:2-4, and polyethylene glycol 200 and MoS2-mass ratio of PDA 4-6: 1;
(3) transferring the liquid obtained in the step (2) into a polytetrafluoroethylene high-temperature high-pressure reaction kettle, and carrying out hydrothermal reaction at the temperature of 170-190 ℃ for 13-17 h;
(4) washing the product obtained in the step (3) by using absolute ethyl alcohol and deionized water, and then carrying out centrifugal purification and drying to obtain molybdenum disulfide-aluminum oxide composite nano powder;
(5) dispersing the composite nano powder prepared in the step (4) into deionized water, gradually adding glycerol, triethanolamine, sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a trace amount of defoaming agent, magnetically stirring at 50 ℃ for 20-30min, and performing ultrasonic treatment for 10-15min to obtain a water-based hot rolling lubricant with excellent stability and lubricating performance; wherein the mass ratio of the composite nano powder to the sodium hexametaphosphate to the sodium dodecyl benzene sulfonate is 1:0.3-0.5:0.7-0.8, and the mass ratio of the glycerol to the triethanolamine to the water-based borate to the deionized water is 2-4:3-6:0.5: 100.
2. Preparation of nanomos using dopamine polymerization according to claim 12-Al2O3The method for compositely rolling the lubricant is characterized in that the preparation method of the polydopamine modified molybdenum disulfide nanosheet in the step (1) is as follows:
a. preparing Tris-aminomethane buffer solution with the concentration of 1.6g/L and the pH value of 8.5;
b. adding nano molybdenum disulfide and dopamine powder into a mixed solution of absolute ethyl alcohol and a Tris buffer solution, and magnetically stirring for 5-6 hours at 60 ℃ to perform reaction, wherein the mass ratio of the molybdenum disulfide to the dopamine is 5:2, and the volume ratio of the absolute ethyl alcohol to the Tris buffer solution is 1: 2;
c. and c, centrifuging the liquid obtained in the step b, washing the product by using absolute ethyl alcohol and deionized water, and drying to obtain the polydopamine modified molybdenum disulfide nanosheet.
3. Preparation of nanomos using dopamine polymerization according to claim 22-Al2O3The method for compositely rolling the lubricant is characterized in that in the step c, the centrifugal rotating speed is 6000-8000rpm, the centrifugal time is 30-40min, and the drying temperature is 50 ℃.
4. Preparation of nanomos using dopamine polymerization according to claim 12-Al2O3Composite rolling lubricantThe method is characterized in that in the step (2), the rotating speed of the magnetic stirrer is 800-1000rpm, the ultrasonic treatment frequency is 40kHz, and the power is 400W.
5. Preparation of nanomos using dopamine polymerization according to claim 12-Al2O3The method for compositely rolling the lubricant is characterized in that in the step (4), the centrifugal rotating speed is 4000-.
6. Preparation of nanomos using dopamine polymerization according to claim 12-Al2O3The method for compositely rolling the lubricant is characterized in that in the step (5), the rotating speed of a magnetic stirrer is 600-750rpm, the ultrasonic treatment frequency is 28kHz, and the power is 300W; the antifoaming agent was added dropwise with stirring until it was foamy.
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| CN113201392A (en) * | 2021-04-30 | 2021-08-03 | 南京工程学院 | Functional lubricant for surface processing of steel plate strip, preparation method and online detection system |
| CN113549334A (en) * | 2021-08-18 | 2021-10-26 | 鄂尔多斯市路泰新材料科技发展有限公司 | High-elasticity high-weather-resistance modified asphalt and preparation method thereof |
| CN113621420A (en) * | 2021-07-29 | 2021-11-09 | 清华大学 | Preparation method of composite lubricating material |
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| CN113999710A (en) * | 2021-11-10 | 2022-02-01 | 北京科技大学 | Preparation method of nitrogen-doped carbon quantum dot reinforced hBN nano fluid lubricant |
| CN114836257A (en) * | 2022-04-29 | 2022-08-02 | 宁波职业技术学院 | High-adhesion magnetic water-based nano lubricant for magnetic field-assisted micro lubrication and preparation method thereof |
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| CN114836257B (en) * | 2022-04-29 | 2022-12-13 | 宁波职业技术学院 | High-adhesion type magnetic water-based nano lubricant for magnetic field-assisted micro lubrication and preparation method thereof |
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