CN108975321A - A kind of method that the removing of Hydrodynamic cavitation liquid phase prepares graphene - Google Patents
A kind of method that the removing of Hydrodynamic cavitation liquid phase prepares graphene Download PDFInfo
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- CN108975321A CN108975321A CN201811024752.6A CN201811024752A CN108975321A CN 108975321 A CN108975321 A CN 108975321A CN 201811024752 A CN201811024752 A CN 201811024752A CN 108975321 A CN108975321 A CN 108975321A
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- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
- C01B32/19—Preparation by exfoliation
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/02—Single layer graphene
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/04—Specific amount of layers or specific thickness
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/32—Size or surface area
Abstract
The invention discloses a kind of method that the removing of Hydrodynamic cavitation liquid phase prepares graphene, the methods are as follows: by graphite dispersion in the solvent containing surfactant, be sufficiently stirred, obtain graphite dispersing solution；Graphite dispersing solution is sent into cavitation element with flow 0.5-50000L/h with pump, maintains cavitation pressure 0.1-50Mpa, maintenance system temperature obtains the dispersion liquid of a cavitation at 4-50 DEG C in cavitation processes；The dispersion liquid of cavitation is continued to be passed through cavitation element, cavitation is repeated and operates 1-200 times, the dispersion liquid after obtaining circulation cavitation；Dispersion liquid after collecting circulation cavitation, is centrifuged 5-120min at 500-1000rpm, takes supernatant liquor, graphene powder can be obtained after freeze-drying.The present invention provide technical equipment and it is easy to operate, charge stripping efficiency is high, superior product quality, low energy consumption, non-environmental-pollution, is easy to large-scale production, have broad application prospects.
Description
Technical field
The present invention relates to a kind of methods that the removing of Hydrodynamic cavitation liquid phase prepares graphene, belong to graphene preparation technology neck
Domain.
Background technique
Graphene, thickness are only two stratified nano materials of a carbon atom.Due to its unique excellent physical chemistry
Performance, graphene have all shown huge application prospect in many fields, such as electronic information, photon, catalysis, energy storage
Deng.However, to realize these potential applications of graphene, the stone of high-quality must be just prepared on a large scale with lower cost
Black alkene.In recent years, researcher has put into a large amount of research energy in the technology of preparing of graphene, achieves marked improvement.
Currently, the technology of preparing of graphene mainly has chemical vapour deposition technique (CVD), oxidation-reduction method, epitaxial growth method,
Electrochemical process and liquid phase stripping method etc..In these methods, liquid phase stripping method is considered as most being expected to realize high-quality graphene
Low cost, the technology of large scale preparation.Traditional liquid phase stripping method directly removes graphite at graphite mainly by ultrasonic wave
Alkene lamella.However as going deep into for research, it has been found that there are many defects for the graphene that ultrasonic liquid-phase stripping method obtains, and
Ultrasonic technique itself there is also low efficiency, be difficult to realize the shortcomings that large-scale industrial production.In recent years, fluid dynamics liquid phase
The characteristics of stripping method is due to its flux height and superior product quality, receives more and more attention.Such as patent of invention
CN102249222A discloses a kind of method for preparing graphene using jet flow cavitation technique；In addition, there are also vortex liquid phases to remove,
Height cut stirring liquid phase removing, high-pressure homogeneous liquid phase removing etc., they be using the active force generated in process fluid flow come
Prepare graphene.However these methods there are still the high requirements on the equipment, charge stripping efficiency is low, yield is not high the disadvantages of.
Hydrodynamic cavitation is a kind of hydrodynamics phenomenon.When liquid passes through a certain restricting element, the flow velocity of liquid increases severely, pressure
It reduces sharply, when pressure is down to cavitation inception pressure (saturated vapor pressure generally under relevant temperature), a large amount of cavitation will be generated
Bubble restores to downstream pressure value, and cavitation bubble moment vanishes, and when cavitation bubble is vanished, forms fluid microjet, and generate thump
Wave, principle is similar to conventional ultrasound cavitation, but compared with ultrasonic cavitation, Hydrodynamic cavitation flux and it is high-efficient, low energy consumption, be more suitable for
Large-scale production.
Summary of the invention
The object of the present invention is to provide a kind of methods that the removing of Hydrodynamic cavitation liquid phase prepares graphene.Technical side of the invention
Case is as follows:
A kind of method that the removing of Hydrodynamic cavitation liquid phase prepares graphene specifically carries out in accordance with the following steps:
(1) it by graphite dispersion in the solvent containing surfactant, is sufficiently stirred, obtains graphite dispersing solution；The stone
The initial final concentration of 1-200g/L of ink；
(2) graphite dispersing solution is sent into cavitation element with flow 0.5-50000L/h with pump, adjusts flow and maintains cavitation pressure
Power 0.1-50Mpa obtains the dispersion liquid of a cavitation at 4-50 DEG C by water-bath control system temperature in cavitation processes；
(3) dispersion liquid of a cavitation is continued to be passed through cavitation element, repeats operation 1-200 times of step (2), obtains
Dispersion liquid to after circulation cavitation；
(4) dispersion liquid after collecting circulation cavitation, is centrifuged 5-120min at 500-1000rpm, takes supernatant liquor, freezes
Graphene powder can be obtained after drying.
Further, in step (1), the surfactant is lauryl sodium sulfate, neopelex, ten
Six alkyl trimethyl ammonium bromides, Triton X-100, polysorbas20, Tween 80, polysorbate85, polyethylene glycol 400, polyoxy third
It is alkene ethylene oxide glycerin ether, polyvinylpyrrolidone, polyoxyethylene laurel ether, cow-bezoar NaTDC, microcrystalline cellulose, wooden
One of element or any several mixture.
It further, is to preferably assist Hydrodynamic cavitation item using the solvent containing surfactant in step (1)
Liquid phase removing under part, obtains the graphene that concentration is high, quality is good.
Further, in step (1), the initial final concentration of 0.01-10g/L of the surfactant.
Further, in step (1), the solvent can be one of organic solvent or any two kinds of mixed solvent
Or the mixed solution of one of organic solvent and water；The organic solvent is acetone, chloroform, isopropanol, ethyl alcohol, positive fourth
Alcohol, dimethyl sulfoxide, benzene, phenyl-hexafluoride, N-Methyl pyrrolidone, N,N-dimethylformamide, chlorosulfonic acid, methanesulfonic acid.
Further, in step (1), the solvent is that volume ratio is any two kinds of organic solvents or described of 1:1-10
Organic solvent and water volume ratio are 1:0.1-10.
Further, in step (2), the cavitation element aperture size 0.01-100mm.
Further, in step (2), the cavitation element is orifice plate, Venturi tube or valve.
Further, in step (2), the orifice plate is in the form of annular discs, diameter 10-500mm, and number of aperture 1-100, aperture
1-100mm。
Further, in step (2), the Venturi tube is that both ends are wide, intermediate narrow cylinder, narrowest part it is straight
Diameter, i.e. larynx diameter 1-500mm, pipe range 100-1000mm.
Further, in step (2), the valve is throttle valve, and latus rectum 1-30mm, opening size is 0.01- in valve
10mm。
Further, in step (2), cavitation element is that graphite removing is that graphene provides place, due to cavitation element
Cavitation effect, shearing force and collision occur under pressure change and change in flow sharply for slype structure, graphite dispersing solution
Effect, to removing graphite for graphene.
Further, in step (2), pressure is higher before cavitation element, more significant to the peeling effect of graphite, fragmentation effect
Also more preferable.
Further, in step (2), cycle-index has a significant impact the peeling effect of graphite, and cycle-index is more, removing
Graphite effect is better, and graphene yield is higher.
Graphene dispersing solution after cavitation of the present invention, concentration in 0.1-2.0mg/mL, dispersion liquid the number of plies less than 5 layers
Graphene sheet layer account for sum 50%-90%, 1-10 μm of lamella size.
The principle of the present invention is: after graphite dispersing solution is pressurized to high pressure, into cavitation element, then flowing out, restores extremely
Normal pressure occurs Hydrodynamic cavitation effect, while generating shear action and graphite by the turbulent flow generated when cavitation element in fluid
Intergranular collision effect, these effects result in graphite jointly and are stripped as graphene.According to surface tension matching theory, choosing
Suitable dispersing agent is selected, the surface tension of dispersion and graphene can be made close to (about 40-50mNm-1), can effectively it subtract
Energy needed for few removing, to facilitate the removing of graphite, and is able to maintain the stability of graphene dispersing solution.
The present invention is tested using the device of self assembly, and the device includes head tank 1, pump 2, pressure gauge 3, cavitation
Element (valve 4, orifice plate 7 or Venturi tube 8), constant temperature water bath 5 and products pot 6, the feeding inlet and head tank 1 of the pump 2
Connection, discharge port are connect with the import of the cavitation element 4, and the outlet of the cavitation element 4 is connect with products pot 6；It is described
Pressure gauge 3 be immersed in constant temperature water bath 5；The connecting pipe of the pump 2 and cavitation element 4 is equipped with pressure gauge 3.
Compared with prior art, the beneficial effects of the present invention are:
The present invention provides a kind of method for preparing graphene using Hydrodynamic cavitation liquid phase removing, compared to conventional ultrasound liquid phase
Stripping method and other hydrodynamics liquid phase stripping methods, the preparation efficiency of graphene of the present invention significantly improves, equipment is simple, is produced into
This is low, time-consuming short, and preparation process is environmental-friendly, and amplification production, obtained graphite can be realized by being easy to large-scale industrial production
Alkene quality is high, based on single layer and few layer (< 5 layers) graphene, can be widely applied to the fields such as catalyst, photoelectric material, the energy,
It has a good application prospect.
Detailed description of the invention
Fig. 1 is that the method cavitation element that Hydrodynamic cavitation liquid phase removing of the present invention prepares graphene is the device process of valve
Scheme, in figure, 1- head tank；2- pump；3- pressure gauge；4- valve；5- constant temperature water bath；6- products pot.
Fig. 2 is that the method cavitation element that Hydrodynamic cavitation liquid phase removing of the present invention prepares graphene is the device process of orifice plate
Scheme, in figure, 1- head tank；2- pump；3- pressure gauge；4- valve；5- constant temperature water bath；6- products pot；7- orifice plate.
Fig. 3 is that the method cavitation element that Hydrodynamic cavitation liquid phase removing of the present invention prepares graphene is the device stream of Venturi tube
Cheng Tu, in figure, 1- head tank；2- pump；3- pressure gauge；4- valve；5- constant temperature water bath；6- products pot；8- Venturi tube.
Fig. 4 is the transmission electron microscope picture of graphene obtained by the present invention.
Specific embodiment
With reference to embodiments and experimental example, to a kind of method that liquid phase removing prepares graphene of the present invention do into
One step explanation, but the scope of the present invention is not limited thereto.
The orifice plate, valve, Venturi tube producer be instrument and meter for automation Co., Ltd of Guomei of Jinhu County.
Embodiment 1
It is reacted in homemade device in conjunction with 2 technical solutions according to the invention of Figure of description: the device
It is connect including head tank 1, pump 2, pressure gauge 3, orifice plate 7 and products pot 5, the feeding inlet of the pump 2 with head tank 1, discharge port
It is connect with the import of the orifice plate 7, the outlet of the orifice plate 7 is connect with products pot 6；The pressure gauge 3 is immersed in constant temperature
In water bath 5；The connecting pipe of the pump 2 and orifice plate 7 is equipped with pressure gauge 3；7 both ends of orifice plate pass through flange and pipe
Road connection.
It 1) is surfactant by solvent, Tween 80 of pure isopropanol, configuration graphite concentration is 3g/L, surfactant
The dispersion liquid of concentration 0.5g/L, is sufficiently stirred, and obtains graphite dispersing solution；
2) graphite dispersing solution is sent into aperture with the flow of 0.5L/h with pump is 0.01mm, and the orifice plate that number of aperture is 5 maintains
Cavitation pressure 10Mpa is recycled 10 times, and system temperature is 25 DEG C；
3) dispersion liquid after recycling cavitation is collected, 90min is centrifuged under 500rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 3.3% can be obtained in the graphene dispersing solution of 0.10g/L after freeze-drying.
Embodiment 2
It is reacted in homemade device in conjunction with 1 technical solutions according to the invention of Figure of description: the device
It is connect including head tank 1, pump 2, pressure gauge 3, valve 4 and products pot 5, the feeding inlet of the pump 2 with head tank 1, discharge port
It is connect with the import of the valve 4, the outlet of the valve 4 is connect with products pot 6；The pressure gauge 3 is immersed in constant temperature
In water bath 5；The connecting pipe of the pump 2 and valve 4 is equipped with pressure gauge 3.
1) it is surfactant by solvent, cow-bezoar NaTDC of pure N-Methyl pyrrolidone, configures graphite concentration
It for the dispersion liquid of 30g/L, surfactant concentration 0.1g/L, is sufficiently stirred, obtains graphite dispersing solution；
2) graphite dispersing solution is sent into opening size with the flow of 1L/h as the valve of 0.02mm with pump, maintains cavitation pressure
40Mpa is recycled 15 times, and system temperature is 35 DEG C；
3) dispersion liquid after recycling cavitation is collected, 45min is centrifuged under 1000rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 3.3% can be obtained in the graphene dispersing solution of 1.0g/L after freeze-drying.
Embodiment 3
It is reacted in homemade device in conjunction with 3 technical solutions according to the invention of Figure of description: the device
It is connect including head tank 1, pump 2, pressure gauge 3, Venturi tube 8 and products pot 5, the feeding inlet of the pump 2 with head tank 1, out
Material mouth is connect with the import of the Venturi tube 8, and the outlet of the Venturi tube 8 is connect with products pot 6；The pressure gauge
3 are immersed in constant temperature water bath 5；The connecting pipe of the pump 2 and Venturi tube 8 is equipped with pressure gauge 3.
1) using volume ratio for 2:1 N-Methyl pyrrolidone-water mixed solution as solvent, neopelex be table
Face activating agent, configuration graphite concentration are the dispersion liquid of 50g/L, surfactant concentration 0.1g/L, are sufficiently stirred, and graphite point is obtained
Dispersion liquid；
2) graphite dispersing solution is sent into larynx diameter size with the flow of 5L/h as the Venturi tube of 0.4mm with pump, maintains cavitation
Pressure 20Mpa is recycled 20 times, and system temperature is 40 DEG C；
3) dispersion liquid after recycling cavitation is collected, 90min is centrifuged under 1000rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 2% can be obtained in the graphene dispersing solution of 1.0g/L after freeze-drying.
Embodiment 4
Device is the same as embodiment 3
1) using volume ratio for 1:1 isopropanol-water mixed solution as solvent, polyoxypropylene ethylene oxide glycerin ether be surface
Activating agent, the dispersion liquid of configuration graphite concentration 10g/L, surfactant concentration 0.2g/L, is sufficiently stirred, obtains graphite dispersion
Liquid；
2) graphite dispersing solution is sent into larynx diameter size with the flow of 100L/h as the Venturi tube of 1mm with pump, maintains cavitation
Pressure 25Mpa is recycled 80 times, and system temperature is 35 DEG C；
3) dispersion liquid after recycling cavitation is collected, 45min is centrifuged under 500rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 3.5% can be obtained in the graphene dispersing solution of 0.35g/L after freeze-drying.
Embodiment 5
Device is the same as embodiment 1
It 1) is surfactant by solvent, Tween 80 of pure n,N-Dimethylformamide, configuration graphite concentration is 80g/
L, the dispersion liquid of surfactant concentration 3g/L, is sufficiently stirred, and obtains graphite dispersing solution；
2) graphite dispersing solution is sent into pore size with the flow of 20L/h with pump is 0.5mm, the orifice plate that number of aperture is 10,
Cavitation pressure 50Mpa is maintained, is recycled 100 times, system temperature is 40 DEG C；
3) dispersion liquid after recycling cavitation is collected, 60min is centrifuged under 500rpm, takes supernatant liquor, obtaining concentration is 1.3g/
Graphene powder, yield 1.6% can be obtained in the graphene dispersing solution of L after freeze-drying.
Embodiment 6
Device is the same as embodiment 2
It 1) is surfactant by solvent, polysorbas20 of pure chloroform, configuration graphite concentration is 10g/L, surfactant
The dispersion liquid of concentration 10g/L, is sufficiently stirred, and obtains graphite dispersing solution；
2) graphite dispersing solution is sent into opening size with the flow of 15L/h as the valve of 0.1mm with pump, maintains cavitation pressure
15Mpa is recycled 20 times, and system temperature is 35 DEG C；
3) dispersion liquid after recycling cavitation is collected, 45min is centrifuged under 1000rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 1.7% can be obtained in the graphene dispersing solution of 0.17g/L after freeze-drying.
Embodiment 7
Device is the same as embodiment 3
1) as solvent, lauryl sodium sulfate it is surfactant for the alcohol-water mixed solution of 1:1 using volume ratio, matches
The dispersion liquid that graphite concentration is 100g/L, surfactant concentration 0.1g/L is set, is sufficiently stirred, obtains graphite dispersing solution；
2) graphite dispersing solution is sent into larynx diameter size with the flow of 10000L/h as the Venturi tube of 20mm with pump, remains empty
Change pressure 40Mpa, recycle 200 times, system temperature is 50 DEG C；
3) dispersion liquid after recycling cavitation is collected, 90min is centrifuged under 500rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 0.65% can be obtained in the graphene dispersing solution of 0.65g/L after freeze-drying.
Embodiment 8
Device is the same as embodiment 2
It 1) is surfactant by solvent, lignin of pure dimethyl sulfoxide, configuration graphite concentration is 30g/L, surface
The dispersion liquid of surfactant concentration 0.5g/L, is sufficiently stirred, and obtains graphite dispersing solution；
2) graphite dispersing solution is sent into opening size with the flow of 2000L/h as the valve of 3mm with pump, maintains cavitation pressure
30Mpa is recycled 100 times, and system temperature is 50 DEG C；
3) dispersion liquid after recycling cavitation is collected, 90min is centrifuged under 1000rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 1.7% can be obtained in the graphene dispersing solution of 0.50g/L after freeze-drying.
Embodiment 9
Device is the same as embodiment 1
It 1) is surfactant by solvent, Triton X-100 of pure n-butanol, configuration graphite concentration is
The dispersion liquid of 150g/L, surfactant concentration 0.01g/L, are sufficiently stirred, and obtain graphite dispersing solution；
2) graphite dispersing solution is sent into pore size with the flow of 500L/h with pump is 10mm, the orifice plate that number of aperture is 50,
Cavitation pressure 35Mpa is maintained, is recycled 50 times, system temperature is 50 DEG C；
3) dispersion liquid after recycling cavitation is collected, 60min is centrifuged under 500rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 0.45% can be obtained in the graphene dispersing solution of 0.68g/L after freeze-drying.
Embodiment 10
Device is the same as embodiment 3
1) using volume ratio for 7:3 acetone-water mixed solution as solvent, cetyl trimethylammonium bromide be surface-active
Agent, configuration graphite concentration are the dispersion liquid of 8g/L, surfactant concentration 1g/L, are sufficiently stirred, obtain graphite dispersing solution；
2) graphite dispersing solution is sent into larynx diameter size with the flow of 20000L/h as the Venturi tube of 15mm with pump, remains empty
Change pressure 30Mpa, recycle 100 times, system temperature is 40 DEG C；
3) dispersion liquid after recycling cavitation is collected, 90min is centrifuged under 800rpm, takes supernatant liquor, obtaining concentration is
Graphene powder, yield 5.25% can be obtained in the graphene dispersing solution of 0.42g/L after freeze-drying.
Claims (10)
1. a kind of method that the removing of Hydrodynamic cavitation liquid phase prepares graphene, it is characterised in that: the method is specifically according to as follows
Step carries out:
(1) it by graphite dispersion in the solvent containing surfactant, is sufficiently stirred, obtains graphite dispersing solution；The graphite
Initial final concentration of 1-200g/L；
(2) graphite dispersing solution is sent into cavitation element with flow 0.5-50000L/h, adjusts flow and maintains cavitation pressure 0.1-
50Mpa obtains the dispersion liquid of a cavitation at 4-50 DEG C by water-bath control system temperature in cavitation processes；
(3) dispersion liquid of a cavitation is continued to be fed into cavitation element, repeats operation 1-200 times of step (2), is followed
Dispersion liquid after annular space；
(4) dispersion liquid after collecting circulation cavitation, is centrifuged 5-120min at 500-1000rpm, takes supernatant liquor, is freeze-dried
After graphene powder can be obtained.
2. according to the method described in claim 1, it is characterized by: the surfactant is dodecyl in step (1)
Sodium sulphate, neopelex, cetyl trimethylammonium bromide, Triton X-100, polysorbas20, tween
80, polysorbate85, polyethylene glycol 400, polyoxypropylene ethylene oxide glycerin ether, polyvinylpyrrolidone, polyoxyethylene laurel ether, ox
One of yellow NaTDC, microcrystalline cellulose, lignin or any several mixture.
3. according to the method described in claim 2, it is characterized by: in step (1), the surfactant be polysorbas20,
Tween 80, cow-bezoar NaTDC, neopelex, polyoxypropylene ethylene oxide glycerin ether, lauryl sodium sulfate,
Lignin, Triton X-100, cetyl trimethylammonium bromide.
4. according to the method described in claim 1, it is characterized by: in step (1), the surfactant it is first dense always
Degree is 0.01-10g/L.
5. according to the method described in claim 1, it is characterized by: the solvent can be in organic solvent in step (1)
Mixed solution with water of one kind or one of any two kinds of mixed solvent or organic solvent.
6. according to the method described in claim 5, it is characterized by: in step (1), the organic solvent be acetone, chloroform,
Isopropanol, ethyl alcohol, n-butanol, dimethyl sulfoxide, benzene, phenyl-hexafluoride, N-Methyl pyrrolidone, N,N-dimethylformamide, chlorine sulphur
Acid, methanesulfonic acid.
7. according to the method described in claim 1, it is characterized by: the solvent is that volume ratio is 1:1-10 in step (1)
Any two kinds of organic solvents or the organic solvent and water volume ratio are 1:0.1-10.
8. according to the method described in claim 1, it is characterized by: the cavitation element aperture is big in step (2) or (3)
Small 0.01-100mm.
9. according to the method described in claim 1, it is characterized by: in step (2) or (3), the cavitation element be orifice plate,
Venturi tube or valve.
10. according to the method described in claim 9, it is characterized by: the orifice plate is in the form of annular discs, diameter 10-500mm,
Number of aperture 1-100, aperture 1-100mm；The Venturi tube larynx diameter is 1-500mm, pipe range 100-1000mm；The valve
For throttle valve, latus rectum 1-30mm, opening size is 0.01-10mm in valve.
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| CN109761225A (en) * | 2019-03-30 | 2019-05-17 | 山东大学 | A kind of system based on Hydrodynamic cavitation and preparing grapheme through oxidation reduction |
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| CN111377437B (en) * | 2018-12-31 | 2024-01-16 | 浙江工业大学 | Stripping device and stripping method for layered material |
| CN111377437A (en) * | 2018-12-31 | 2020-07-07 | 浙江工业大学 | Device and method for stripping layered material |
| CN109761225A (en) * | 2019-03-30 | 2019-05-17 | 山东大学 | A kind of system based on Hydrodynamic cavitation and preparing grapheme through oxidation reduction |
| CN110042284A (en) * | 2019-05-08 | 2019-07-23 | 东南大学 | A kind of preparation method of high-strength aluminum alloy |
| CN110128733A (en) * | 2019-06-10 | 2019-08-16 | 浙江工业大学 | A method of nano lignin composite particles are prepared using micro passage reaction |
| CN110128733B (en) * | 2019-06-10 | 2021-07-27 | 浙江工业大学 | Method for preparing nano lignin composite particles by using microchannel reactor |
| CN112125299A (en) * | 2019-06-24 | 2020-12-25 | 浙江工业大学 | Gas-driven multi-channel laminar material stripping device |
| CN110681309A (en) * | 2019-09-30 | 2020-01-14 | 浙江工业大学 | Method for preparing emulsion by gas-driven emulsification |
| CN111232982A (en) * | 2020-03-18 | 2020-06-05 | 中国科学院宁波材料技术与工程研究所 | Two-dimensional Ti3C2TXMethod for peeling nanosheet |
| CN112642590A (en) * | 2020-12-30 | 2021-04-13 | 宁夏嘉峰化工有限公司 | Hydrodynamic cavitation enhanced cyanamide waste residue flotation separation method |
| CN112642590B (en) * | 2020-12-30 | 2022-06-03 | 宁夏嘉峰化工有限公司 | Hydrodynamic cavitation enhanced cyanamide waste residue flotation separation method |
| CN112624094A (en) * | 2020-12-31 | 2021-04-09 | 浙江工业大学 | Method for preparing graphene by utilizing gas-driven liquid phase stripping in microchannel |
| CN112624094B (en) * | 2020-12-31 | 2022-03-18 | 浙江工业大学 | Method for preparing graphene by utilizing gas-driven liquid phase stripping in microchannel |
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