CN106520354A - Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant - Google Patents

Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant Download PDF

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Publication number
CN106520354A
CN106520354A CN201610920997.1A CN201610920997A CN106520354A CN 106520354 A CN106520354 A CN 106520354A CN 201610920997 A CN201610920997 A CN 201610920997A CN 106520354 A CN106520354 A CN 106520354A
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carbon quantum
water
quantum dot
dimensional material
nanometer sheet
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CN201610920997.1A
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张文玲
刘敬权
田煜
郭飞
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Tsinghua University
Qingdao University
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Tsinghua University
Qingdao University
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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
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • 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
    • C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
    • 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
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • 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
    • 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
    • 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
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure

Abstract

The invention belongs to the technical field of nano lubricant material preparation and relates to a water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and a preparation method of the water-based lubricant. Carbon quantum dot powder is first prepared, then the prepared carbon quantum dot powder is added into ultra-pure water, and ultrasonic treatment is conducted for 10 min to obtain a carbon quantum dot aqueous solution; then, two-dimensional material nanosheets are added into the carbon quantum dot aqueous solution for ultrasonic treatment to prepare the water-based lubricant based on the two-dimensional material nanosheets/carbon quantum dots, wherein the water-based lubricant comprises, by mass, 0.01-15% of the carbon quantum dots, 0.001-0.1% of the two-dimensional material nanosheets and the balance ultra-pure water. The lubricant is simple and controllable in preparation process, low in cost, environmentally friendly, clean and free of toxin, large-scale production is easy, and the prepared water-based lubricant is extremely low in friction coefficient and good in adaptability with friction pairs, and does not corrode common carbon steel.

Description

A kind of water-based lubricating liquid and its preparation based on two-dimensional material nanometer sheet/carbon quantum dot Method
Technical field：
The invention belongs to nano-lubricating material preparing technical field, is related to a kind of based on two-dimensional material nanometer sheet/carbon quantum Water-based lubricating liquid of point and preparation method thereof, it is particularly a kind of to be prepared based on two-dimensional material nanometer sheet/carbon using ultrasonic hole method The method of the high dispersion stability water-based lubricating liquid of quantum dot, the nano water-based lubricating fluid of preparation have coefficient of friction ultralow, and Preparation process environmental friendliness, it is with low cost the advantages of.
Background technology：
According to statistics, the energy in the whole world annual about 1/1 to two/3rds is consumed in various forms of fretting wears Cheng Zhong, lubrication technology are to solve one of most effectual way of this problem.At present, conventional fluid lubricant can be divided into oil base profit Lubrication prescription and water base lubricant, both compare, and the biodegradable of oil lubricant is poor, and easily retains in the environment for a long time And be progressively enriched with, it is unfavorable for sustainable development.Water base lubricant has that with low cost, processed surface smoothness is good, heat conductivity It is high, the advantages of environment compatibility is good, be widely used in precise polished, cutting and the field such as cold rolling, but water base lubricant is present Abrasion resistance is poor and the shortcomings of corrosivity.By adding various functions additive in water, water based lubrication can ensured While agent special performance, it is to avoid its corrosivity simultaneously improves its lubrication and abrasion resistance.
With starting for Graphene research boom in recent years, the two-dimensional material of other class graphene-structureds also begins to cause and grinds The extensive concern of the person of studying carefully.Such as, hexagonal boron nitride (h-BN), layered double-hydroxide (layered double hydroxide, LDH), transistion metal compound (molybdenum bisuphide (MoS2), tungsten disulfide (WS2), two selenizing molybdenum (MoSe2)) etc. be all typical Inorganic lamellar material.These two-dimensional materials are added to as lubricating additive can increase the lubrication of oils and fatss in various oils and fatss Property.Meanwhile, when two-dimensional material is peeled off to nanometer grade thickness, these nanometer sheet are easy to enter into and rub with friction process Wipe between pair, unique layer structure makes which easily be attached on surface of friction pair again, layer protecting film is formed in surface of friction pair, made Friction then occur between the two-dimensional material thin film for attaching to surface of friction pair, it is to avoid the direct collision contact of friction pair, Reduce friction, reduce the effect of abrasion.However, the intrinsic hydrophobic performance of these two-dimensional materials, rarely has at present with regard to conduct The report of their Water-based Lubricating Additives.
Nano material of the quantum dot as zero dimension, it is excellent with unique skin effect, dimensional effect, quantum confined effect etc. Point, also retains the performance of raw material.Such as, carbon quantum dot has the optics and electric property of quantum dot, is also effectively maintained The characteristic of material with carbon element.Meanwhile, the carbon quantum dot of the nano-scale dispersion stabilization in water is fabulous, compared to traditional nano-sized carbon Material lubricating additive, carbon quantum dot have broader practice prospect in Water-based Lubricating Additives field.Therefore, we report It is this can in combination with two-dimensional material and the advantage of carbon quantum dot, using carbon quantum dot as surfactant and stably dispersing Agent, prepares the method based on two-dimensional material nanometer sheet/carbon quantum dot water base lubricant using ultrasonic hole method.
The content of the invention：
It is an object of the invention to the shortcoming for overcoming prior art to exist, seeks design and provides a kind of with ultra-low friction system Number and the water-based lubricating liquid of environmental protection and preparation method thereof, using carbon quantum dot as surfactant and dispersion stabilizer, Prepared based on two-dimensional material nanometer sheet/carbon quantum dot water-based lubricating liquid using ultrasonic hole method.
To achieve these goals, the water-based lubricating liquid bag based on two-dimensional material nanometer sheet/carbon quantum dot of the present invention Include ultra-pure water, carbon quantum dot and two-dimensional material nanometer sheet, wherein carbon quantum dot account for water-based lubricating liquid gross mass 0.01～ 1.5%, two-dimensional material nanometer sheet accounts for the 0.001～0.1% of water-based lubricating liquid gross mass, and remaining is ultra-pure water.
It is prepared by the present invention：
(1) with citric acid and carbamide as raw material, add ultra-pure water, successively stirring, ultrasound after obtain settled solution, wherein lemon Lemon acid：Carbamide：The mass ratio of ultra-pure water is 5～10:10:30～60, mixing speed is 100～500 revs/min, and ultrasonic power is 20～80 watts, temperature is 50～95 degrees Celsius, and ultrasonic time is 50～100 hours；
(2) settled solution is placed in microwave oven and is reacted 5～10 minutes, obtain black solid reactant, add ultra-pure water After carry out cell pulverization and obtain carbon quantum dot aqueous solution in 30～60 minutes；
(3), after the carbon quantum dot aqueous solution of preparation being carried out sucking filtration, dialysis, lyophilization obtains carbon quantum in 12～60 hours Point powder；
(4) carbon quantum dot of preparation is added in ultra-pure water, ultrasound obtains carbon quantum dot aqueous solution in 10 minutes；
(5) two-dimensional material nanometer sheet is added in carbon quantum dot aqueous solution prepared by step (4), at 50～95 degrees Celsius Lower ultrasonic 50～100 hours, prepare the water-based lubricating liquid based on two-dimensional material nanometer sheet/carbon quantum dot.
Two-dimensional material nanometer sheet of the present invention includes Graphene, boron nitride, molybdenum bisuphide, tungsten disulfide and two selenizings Molybdenum.
The present invention compared with prior art, its preparation process is simple is controllable, low cost, environmental friendliness, clean it is nontoxic and It is easy to large-scale production, prepared water based lubrication coefficient of friction is extremely low, it is fine to the adaptability of friction pair, to ordinary carbon steel not Produce corrosion.
Description of the drawings：
Fig. 1 is high-resolution transmission plot (a) of carbon quantum dot prepared by the embodiment of the present invention 1 and shear viscosity figure (b).
Fig. 2 is the high-resolution transmission plot of graphene nanometer sheet/carbon quantum dot prepared by the embodiment of the present invention 1.
Fig. 3 is the coefficient of friction figure of graphene nanometer sheet/carbon quantum dot aqueous solution prepared by the embodiment of the present invention 1.
Fig. 4 is the coefficient of friction figure of molybdenum disulfide nano sheet/carbon quantum dot aqueous solution prepared by the embodiment of the present invention 2.
Specific embodiment：
Below by embodiment and combine accompanying drawing and be described further.
Embodiment 1：
The present embodiment prepares graphene nanometer sheet/carbon quantum dot water-based lubricating liquid by raw material of graphite citric acid carbamide, Its concrete preparation process is：
(1) carbon quantum dot is prepared with existing microwave method；
(2) 300mg carbon quantum dots are distributed in 200mL ultra-pure waters, ultrasound 10 minutes, preparing the concentration that is uniformly dispersed is The carbon quantum dot aqueous solution of 1.5g/L；
(3) weigh 50mg graphite powders to be added in carbon quantum dot aqueous solution prepared by step (2), ultrasound is divided for 10 minutes Dispersion liquid；
(4) dispersion liquid that step (3) is obtained is poured in 250 milliliters of vial, carries out ultrasound, ultrasonic power is 80 Watt, ultrasonic temperature is 60 degree, and ultrasonic time is 60 hours, obtains graphene nanometer sheet/carbon quantum dot water-based lubricating liquid；
(5) graphene nanometer sheet for obtaining step (4)/carbon quantum dot water-based lubricating liquid is lubricated performance test, knot Fruit is as shown in Figure 3.
Embodiment 2：
The present embodiment prepares molybdenum bisuphide/carbon quantum dot water-based lubricating liquid by raw material of molybdenum bisuphide citric acid carbamide, Its concrete preparation process is：
(1) carbon quantum dot is prepared with existing microwave method；
(2) 300mg carbon quantum dots are placed in 200mL ultra-pure waters, ultrasound 10 minutes, draw be uniformly dispersed, concentration is The carbon quantum dot aqueous solution of 1.5g/L；
(3) weigh 50mg molybdenum disulfide powders to be added in carbon quantum dot aqueous solution, ultrasound obtains dispersion liquid in 10 minutes；
(4) dispersion liquid that step (3) is obtained is poured in 250 milliliters of vial, carries out ultrasound, ultrasonic power is 80 Watt, ultrasonic temperature is 60 degree, and ultrasound is 60 hours time, obtains aqueous dispersion liquid, as the water base profit of molybdenum bisuphide/carbon quantum dot Synovial fluid；
(5) greasy property of the molybdenum bisuphide that testing procedure (4) is obtained/carbon quantum dot water-based lubricating liquid, as a result such as Fig. 4 institutes Show.

Claims (3)

1. a kind of water-based lubricating liquid based on two-dimensional material nanometer sheet/carbon quantum dot, it is characterised in that including ultra-pure water, carbon quantum Point and two-dimensional material nanometer sheet, wherein carbon quantum dot account for the 0.01～1.5% of water-based lubricating liquid gross mass, two-dimensional material nanometer sheet The 0.001～0.1% of water-based lubricating liquid gross mass is accounted for, remaining is ultra-pure water.
2. a kind of preparation method as claimed in claim 1 based on the water-based lubricating liquid of two-dimensional material nanometer sheet/carbon quantum dot, its It is characterised by that detailed process is：
(1) with citric acid and carbamide as raw material, add ultra-pure water, successively stirring, ultrasound after obtain settled solution, wherein Fructus Citri Limoniae Acid：Carbamide：The mass ratio of ultra-pure water is 5～10:10:30～60, mixing speed is 100～500 revs/min, and ultrasonic power is 20 ～80 watts, temperature is 50～95 degrees Celsius, and ultrasonic time is 50～100 hours；
(2) settled solution is placed in microwave oven and is reacted 5～10 minutes, obtain black solid reactant, add ultra-pure water laggard Row cell pulverization obtains carbon quantum dot aqueous solution in 30～60 minutes；
(3), after the carbon quantum dot aqueous solution of preparation being carried out sucking filtration, dialysis, lyophilization obtains carbon quantum dot powder in 12～60 hours End；
(4) carbon quantum dot of preparation is added in ultra-pure water, ultrasound obtains carbon quantum dot aqueous solution in 10 minutes；
(5) two-dimensional material nanometer sheet is added in carbon quantum dot aqueous solution prepared by step (4), is surpassed under 50～95 degrees Celsius Sound 50～100 hours, prepares the water-based lubricating liquid based on two-dimensional material nanometer sheet/carbon quantum dot.
3. preparation method according to claim 2 based on the water-based lubricating liquid of two-dimensional material nanometer sheet/carbon quantum dot, which is special Levy is that the two-dimensional material nanometer sheet includes Graphene, boron nitride, molybdenum bisuphide, tungsten disulfide and two selenizing molybdenums.
CN201610920997.1A 2016-10-21 2016-10-21 Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant Pending CN106520354A (en)

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CN106952704A (en) * 2017-03-24 2017-07-14 青岛海澄知识产权事务有限公司 One kind is based on the regulatable cobalt-nickel alloy magnetic flow liquid of surface roughness
CN107068320A (en) * 2017-03-24 2017-08-18 青岛大学 A kind of preparation method based on the regulatable cobalt-nickel alloy magnetic flow liquid of surface roughness
CN107603609A (en) * 2017-09-12 2018-01-19 西安交通大学 A kind of carbon nanodot fluorescence powder composite material, preparation method and white-light LED structure
CN107937089A (en) * 2017-11-10 2018-04-20 中国科学院兰州化学物理研究所 The application of molybdenum disulfide or tungsten disulfide quantum dot as high―temperature nuclei lubricating oil antiwear and friction-reducing additive
CN108148650A (en) * 2018-01-03 2018-06-12 清华大学 Two-dimensional material micro-nano piece and the compound lubricating oil of carbon quantum dot and preparation method thereof
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CN111073221A (en) * 2020-01-10 2020-04-28 中国科学院兰州化学物理研究所 Preparation method of graphene quantum dot-nanoparticle-epoxy resin composite material
CN112442365A (en) * 2019-09-03 2021-03-05 清华大学 Two-dimensional material quantum dot composite material and preparation method thereof
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CN113637338A (en) * 2021-08-18 2021-11-12 天津大学 Modified hexagonal boron nitride, water-based anti-oxidation anticorrosive coating and preparation method thereof
CN114686216A (en) * 2020-12-31 2022-07-01 南京理工大学 Double-function nano lubricating additive and preparation method thereof
CN114703003A (en) * 2022-04-14 2022-07-05 上海绿晟环保科技有限公司 Carbon quantum dot-loaded nano-material lubricating additive and preparation method thereof
EP4112705A1 (en) * 2021-07-01 2023-01-04 TotalEnergies OneTech Aqueous lubricating composition comprising mos2 nanosheet
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EP4112704A1 (en) * 2021-07-01 2023-01-04 TotalEnergies OneTech Aqueous lubricating composition comprising mos2 nanosheet
WO2023275296A1 (en) * 2021-07-01 2023-01-05 Totalenergies Onetech Aqueous lubricating composition comprising mos2 nanosheet
WO2023275236A1 (en) * 2021-07-01 2023-01-05 Totalenergies Onetech Aqueous lubricating composition comprising mos2 nanosheet
CN113637338A (en) * 2021-08-18 2021-11-12 天津大学 Modified hexagonal boron nitride, water-based anti-oxidation anticorrosive coating and preparation method thereof
CN114703003A (en) * 2022-04-14 2022-07-05 上海绿晟环保科技有限公司 Carbon quantum dot-loaded nano-material lubricating additive and preparation method thereof

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Application publication date: 20170322