CN110127677A

CN110127677A - Water body graphene slurry production method

Info

Publication number: CN110127677A
Application number: CN201910367028.1A
Authority: CN
Inventors: 陈让珠; 梁思敬; 司徒若祺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2019-08-16

Abstract

The invention discloses water body graphene slurry production methods, and sugar is mixed with percarbonic acid object or peroxide, prepares and tears a layer agent open；It by natural graphite powder and tears a layer agent open and is sent in blender and be sufficiently mixed, then carry out heating and cooling processing；By mixture be sent to ultrasonic wave dispersion bottle in, carry out ultrasonic disperse, after be cooled to room temperature；It is added and hits agent, continue stirring and be sufficiently mixed, obtain graphene slurry；Graphene slurry is prepared by the raw material of following percentage composition, natural graphite powder is 70-80%, tearing layer agent open is 10-20%, shock agent is 10-20%, the yield of water body graphene slurry as made from the invention is more excellent, the materials'use sugar of preparation simultaneously, improve the infiltration and wetting ability of natural graphite powder, the speed for improving reaction saves the time, while avoiding using chemical substances such as strong acid, highly basic, prepare material environmental pollution, it is at low cost, it is a kind of safe and reliable method, is convenient for industrialized mass production.

Description

Water body graphene slurry production method

Technical field

The invention belongs to grapheme material technical fields, and in particular to water body graphene slurry production method.

Background technique

Graphene is a kind of two-dimentional membrane material of monoatomic layer being made of carbon atom, and thickness only has 0.34nm, due to stone The surface of black alkene piece is simultaneously non-fully smooth, by the fold of many out-of-flatnesses, therefore has high specific surface area；Graphene is opposite In traditional inorganic nano material, in mechanics, electricity etc. there is very big advantage in nature, cause grinding for functional material Study carefully upsurge, at the same graphene polymer nanocomposites, field effect transistor, Mechatronic Systems, electronic device, hydrogel, The materials application such as solar battery shows special advantage, has broad application prospects.

The method for preparing graphene at present is mainly mechanical stripping method, chemical vapour deposition technique and oxidation-reduction method etc..

The method that mechanical stripping method goes out graphene sheet layer using mechanical benefit from graphite crystal sur-face peeling, obtained product energy It is enough to keep more perfect crystal structure, although having optimal performance in terms of purity and photo electric, use mechanical stripping Consuming time is long, low output for the graphene of method preparation, can not carry out large-scale industrial production.

Chemical vapour deposition technique mainly utilizes carbon source to decompose in high temperature reaction zone, and release carbon atom is deposited on metal On substrate, the technology of continuous graphene film is gradually grown into, can be produced on a large scale, but is vapor-deposited Method is affected to the electric property of grapheme material, so the requirement to metal substrate is stringent, therefore in process of production, material Expect higher cost, and if metal substrate deal with improperly and be easy to cause environmental pollution.

Oxidation-reduction method be mainly using strong oxidizer prepare high quality, good dispersion graphite oxide on the basis of, This method is mainly aoxidized graphene by using oxides such as the chemical reagent such as sulfuric acid, nitric acid and potassium permanganate, Increase the spacing between graphite linings, be inserted into oxide between layers in graphite, graphene oxide is made, then carries out ultrasonic shake Removing graphene sheet layer is swung, the thin layer even graphene oxide of single layer are prepared, finally by chemical method by graphene oxide It is restored, obtains graphene, a large amount of epoxy-functional in graphene oxide can be removed in oxidation-reduction process, so that The graphene prepared easily disperses in water, is easy self assembly, in terms of transparent conductive film, composite material and energy storage extensively Using, but because the missing of carbon atom is be easy to cause in oxidation-reduction process, while also will cause the participation of epoxy-functional, Remaining oxygen-containing functional group can reduce the electric conductivity of graphene, and the graphene method of oxidation-reduction method preparation is relatively easy, and produces Amount is higher, but the defect of prepared graphene is more.

Since the graphene powder of preparation has great specific surface area, serious lamella is be easy to cause to stack and reunite, Cause to be difficult to disperse in later period application process, thus the performance of graphene can be seriously affected, it is therefore desirable to a kind of inexpensive, environmental protection Pollution-free, safe and reliable method come prepare the graphene dispersing solution of high concentration, high stability solve graphene stack group Poly- problem improves the performance of graphene.

Summary of the invention

For graphene high production cost, low efficiency in the prior art, it be easy to cause environmental pollution and is easy to appear heap Folded the problem of reuniting, the object of the present invention is to provide water body graphene slurry production methods, by using to natural flake graphite Graphene is separated on material, the application material for adding food-grade prepares graphene, realize it is a kind of it is inexpensive, environment friendly and pollution-free, Safe and reliable method improves the yield of graphene.

To achieve the above object, technical scheme is as follows:

A kind of water body graphene slurry, the graphene slurry are prepared by the raw material of following percentage composition, natural stone Ink powder is 70-80%, and tearing layer agent open is 10-20%, and shock agent is 10-20%.

Further, water body graphene slurry production method, comprising the following steps:

(1) it tears the preparation of layer agent open: sugar being mixed with percarbonic acid object or peroxide, prepares and tears a layer agent open；

(2) it by natural graphite powder and tears a layer agent open and is sent in blender and be sufficiently mixed, then carry out at heating and cooling Reason；

(3) by mixture be sent to ultrasonic wave dispersion bottle in, carry out ultrasonic disperse, after be cooled to room temperature；

(4) it is added and hits agent, continue stirring and be sufficiently mixed, obtain water body graphene slurry.

Further, sugar described in step (1) accounts for the 0.1%~10% of natural graphite, sugar molecular structure be poly and The form of polysaccharide chain can guarantee that graphite powder is easy to and tears open a layer agent and combines in water, and the graphene of preparation is effectively avoided to occur Agglomeration guarantees that graphite powder is tearing dispersion full and uniform in layer agent open, and stirring is simple and convenient, and life is effectively reduced in simple process Produce cost.

Further, percarbonic acid object described in step (1) or peroxide are one kind of potassium substrate or amine base compound Or it is a variety of, the graphene lattice defect produced through oxidation-reduction method is larger, the heat transfer coefficient of graphene is greatly reduced, so that The reduced performance of graphene, the present invention uses percarbonic acid object or peroxide with potassium substrate or amido bottom, in the work of sugar It under, can make graphite during tearing layer open, form non-gravity and accumulate bridge type structure, so that the graphene of preparation has more preferably Towards conductivity of heat, while space infra-red radiation area increases, so that radiant emissivity and absorptive rate of radiation be made to be optimal Radiation effect enhances infrared emanation, improves high radiation and the high heat-transfer performance of graphene.

Further, described in step (2) shock agent be EDTA, PTDA, PDTA, the polymers such as HEDTA it is a kind of or more Kind, agent is hit by addition, the effect of collection and the enrichment of chelating agent is utilized, graphene slurry obtained can be made to be in chela Conjunction state, the stably dispersing in slurry, does not settle, and does not agglomerate, conducive to the export of graphene slurry.

Further, in step (2), wherein mixing speed is 100-150r/min, mixing time 3-3.5h in blender.

Further, in step (2), the heating and cooling processing is the heating and cooling processing 5 carried out in quartz ampoule repeatedly It is secondary, wherein heating up is 60-65 DEG C, and cooling down is 40-45 DEG C.It is operated, can be made with cooling using heating repeatedly in whipping process Graphite powder expands with heat and contract with cold with a layer agent process is torn open, improves graphene and tears the attaching space and contact area of layer agent open, improves removing rate, Effectively reduce production cost.

Further, in step (3), the ultrasonic disperse temperature is 55-65 DEG C, and ultrasonic disperse power is 5kW, ultrasonic disperse Time is 30min, when graphite powder and tears layer agent open by stirring, reaction of expanding with heat and contract with cold carries out ultrasonic response, can make not permeate To tearing open between layer agent preferably penetrate into graphite flake layer under ultrasonic state for graphite flake layer, the utilization rate for tearing layer agent open is improved, is reduced Production cost.

Further, mixing speed is 100-150r/min in blender in step (4), and the shock agent reaction time is 1.5h.

Beneficial effect

(1) present invention is food-grade application material using in terms of material, reaches safety and reliable on the whole Property, to reach the production decision for preparing graphene that environmental protection and economy is reliable, inexpensive, it is conducive to graphene industrialization and mass production Production.

(2) present invention uses the compound of potassium substrate and amido bottom in terms of tearing layer agent open, can after handling in water phase It to be used for plant irrigation, avoids using other ionic compounds, such as sodium ion, sodium ion is to inhibit plant growth, cannot For plant irrigation；It avoids reaching zero-emission by using ep-type material using the material contamination environment of strong acid and highly basic simultaneously The purpose put.

(3) present invention is added to sugar in tearing layer agent open, since sugar molecular structure is the form of poly and polysaccharide chain, energy Enough guarantee that graphite powder is easy to and tears open a layer agent and combines in water, improves the infiltration and wetting ability for tearing layer agent open, save wetting The time of stirring is conducive to industrialized mass production graphene.

Detailed description of the invention

Fig. 1 is the Raman spectrogram of water body graphene slurry obtained

Specific embodiment

Clear, complete description is carried out below with reference to technical solution of the attached drawing to various embodiments of the present invention, it is clear that is retouched The embodiment stated is only a part of the embodiments of the present invention, instead of all the embodiments；Based on the embodiment of the present invention, originally Field those of ordinary skill obtained all other embodiment without making creative work, belongs to this hair Bright protected range.

Embodiment 1

(1) it tears the preparation of layer agent open: by sugar and potassium percarbonate, preparing and tear a layer agent open；

(2) 70% natural graphite powder and 15% are torn open a layer agent and be sent in blender and be sufficiently mixed, wherein tearing layer open Sugar accounts for the 6% of natural graphite powder in agent, then mixing speed 100r/min, mixing time 3h carry out heating repeatedly With cooling processing 5 times, wherein heating up is 60 DEG C, and cooling down is 40 DEG C；

(3) mixture is sent in ultrasonic wave dispersion bottle, carries out ultrasonic disperse, ultrasonic disperse temperature is 55 DEG C, ultrasound Dispersion power be 5kW, the ultrasonic disperse time be 30min, after be cooled to room temperature；

(4) it is added and hits agent EDTA, content 15% continues stirring and is sufficiently mixed, obtains graphene slurry.

Fig. 1 is the Raman spectrogram of water body graphene slurry obtained, and as seen from Figure 1, the peak 2D of graphene occurs In 2650cm^-1Near, the Lorentz with height is symmetrical, in addition, D peak intensity relevant to defect is very weak, it might even be possible to ignore, Illustrate the prepared graphene slurry quality with higher of this experiment.

On the basis of embodiment 1, it is contemplated that influence of the additive amount of sugar to water body graphene slurry yield, at other In the case that condition is constant, by changing the additive amount of sugar, water body graphene slurry yield, embodiment 1-5, such as table 1 are investigated It is shown.

Table 1:

Embodiment	Sugar additive amount	Water body graphene slurry yield
			1	0.05%	66.50%
2	0.10%	85.12%
			3	5.00%	95.67%
4	10.00%	97.48%
			5	12.00%	91.94%

As can be seen from Table 1, for the yield of graphene slurry as sugar additive amount is in the trend being gradually increasing, this is main It is because the main component of sugar is sucrose, molecular structure is mainly the relationship of poly and polysaccharide chain, and food is being added in natural graphite Sugar is torn open in layer agent, and the wetting speed and seepage velocity of crystalline flake graphite alkene can be significantly increased, since natural graphite is with hydrophobic Property, tear a layer agent open with sugar by being added, graphite powder is easy and tears layer agent open and combined in water, save that wetting permeates when Between, therefore the 0.1%~10% of natural graphite is accounted in sugar content, the yield of the water body graphene of preparation is more excellent.

Embodiment 6-10

On the basis of embodiment 1, wherein natural graphite powder content is 70%, and tearing layer agent content open is 10-25%, tears a layer agent open For potassium percarbonate and peroxamine mixture, tearing cane sugar content in layer agent open is the 5% of natural graphite powder, mixing speed 120r/ Then min, mixing time 3.2h carry out heating repeatedly and cooling processing 5 times, wherein heating is 65 DEG C, cooling down is 42 DEG C； Ultrasonic dispersing time is 30min, and shock agent is PTDA, and content 10-20%, mixing speed is 125r/min, when stirring Between be 3.2h.

In view of tearing influence of the additive amount of layer agent to graphene slurry yield open, in the case where other conditions are constant, lead to It crosses to change and tears the additive amount of layer agent open, investigate graphene slurry yield, embodiment 6-10, as shown in table 2.

Table 2:

As can be seen from Table 2, with the increase for tearing layer agent content open, the yield of water body graphene slurry first increases to be reduced afterwards, This is because, the distance between graphite flake layer is gradually increased, by not stopping as potassium percarbonate and potassium peroxide tear the addition of layer agent open Stirring heating cooling operates, and distance expands between graphitic molecules, and the interlayer pressure of generation gradually makes graphite be detached from intermolecular force The nanoscale twins for forming graphene single layer or few layer continue to add, are easy to lead however as potassium percarbonate and potassium peroxide It causes to recombine between established graphene sheet layer, agglomeration occurs, so that graphene content in graphene slurry It reduces, to influence the yield of graphene slurry, therefore is 10-20%, the yield of water body graphene slurry when tearing layer agent content open It is more excellent.

Embodiment 11-15

On the basis of embodiment 1, wherein natural graphite powder content is 75%, and tearing layer agent content open is 12%, and tearing a layer agent open is Peroxamine tears 6%, mixing speed 150r/min, mixing time 3h that cane sugar content in layer agent is natural graphite powder open, so Heating repeatedly and cooling processing 5 times are carried out afterwards, wherein heating is 60-65 DEG C, cooling down is 40-45 DEG C；Ultrasonic dispersing time For 25min, shock agent is PDTA, and content 13%, mixing speed is 130r/min, mixing time 3.3h.

In view of graphite and after tearing layer agent mixing open, influence of the heating and cooling processing to graphene slurry yield is carried out, In the case that other conditions are constant, heating and cooling temperature is carried out by changing, investigation graphene slurry yield, embodiment 11-15, such as Shown in table 3.

Table 3:

Embodiment	It heats up (DEG C)	Cool down (DEG C)	Water body graphene slurry yield
				11	60	40	88.37%
12	60	42	90.13%
				13	62	43	95.71%
14	65	45	97.01%
				15	65	42	95.42%

As can be seen from Table 3, as heating and cooling carry out, the trend being gradually increased is presented in the yield of water body graphene slurry, This, which is primarily due to be brought rapidly up, can cause to expand between graphitic molecules, and then makes to tear a layer agent open and quickly enter in graphite flake layer, And then improve graphitic molecules and tear layer agent mutual infiltration and infiltration open, it heats up after a period of time, cooling can make interlayer Pressure is more than the molecular force of graphite layers rapidly, so that graphite expansion is made to be separated into the graphene of single layer or multilayer, with Heating and cooling carry out, tear open layer agent be ink sheet layer infiltration and infiltration, progressively reach saturation state, continue heating cooling, having can It can cause agglomeration, therefore in heating and cooling processing 5 times, wherein heating is 60-65 DEG C, cooling down is 40-45 DEG C, water body The yield of graphene slurry is more excellent.

Embodiment 16-20

On the basis of embodiment 1, wherein natural graphite powder content is 80%, and tearing layer agent content open is 10%, and tearing a layer agent open is Percarbonic acid amine tears 8%, mixing speed 150r/min, mixing time 3h that cane sugar content in layer agent is natural graphite powder open, so Heating repeatedly and cooling processing 5 times are carried out afterwards, wherein heating is 63 DEG C, cooling down is 43 DEG C；The ultrasonic disperse time is 20- 40min, shock agent are HEDTA, and content 10%, mixing speed is 150r/min, mixing time 3h.

In view of graphite and after tearing layer agent mixing open, influence of the ultrasonic disperse to graphene slurry yield, at other In the case that part is constant, by changing the time of ultrasonic wave dispersion, graphene slurry yield, embodiment 16-20, such as table 4 are investigated It is shown.

Table 4:

As can be seen from Table 4, as the time of ultrasonic wave increases, the yield of water body graphene slurry tends to after being gradually increasing Gently, be primarily due to after ultrasonic wave acts on, allow not with to tear graphite powder that layer agent is permeated and infiltrated open swollen rapidly It is swollen, while tearing peroxide in layer agent, percarbonic acid object generation great amount of carbon dioxide and oxygen open, it is released when the generating rate of gas is greater than When putting rate, the molecular force between being more than graphite is caused also unstripped lamellar graphite to be shelled rapidly by the interlayer pressure of generation From the graphene for single layer or few layer, the time of ultrasonic wave, the generating rate and rate of release basic one of gas are continued growing It causes, it is graphene that the interlayer pressure of generation, which is insufficient to allow graphite to continue removing, considers the factor of production cost etc., and selection exists Ultrasonic time is 25min-30min, and the yield of water body graphene slurry is more excellent.

Embodiment 21-25

On the basis of embodiment 1, wherein natural graphite powder content is 70%, and tearing layer agent content open is 10-20%, tears a layer agent open For potassium peroxide, tearing cane sugar content in layer agent open is the 5% of natural graphite powder, and mixing speed is 100r/min, and mixing time is Then 3.5h carries out heating repeatedly and cooling processing 5 times, wherein heating is 62 DEG C, cooling down is 45 DEG C；The ultrasonic disperse time is 26min, shock agent are EDTA and PTDA, content 10-20%, mixing speed 100r/min, mixing time 3.5h.

In view of hitting influence of the additive amount of agent to graphene slurry yield, in the case where other conditions are constant, lead to Cross change hit agent additive amount, investigate graphene slurry yield, embodiment 21-25, as shown in table 5.

Table 5:

As can be seen from Table 5, with the increase for hitting agent, what the yield presentation of water body graphene slurry gradually rose becomes Then gesture tends to balance, this be primarily due to hit agent addition so that the graphene molecules separated start and Chelating agent starts to act on, and chelating agent has the function of collecting and be enriched with, and graphene slurry can be made to be in sequestering properties, avoid stone Influence the performance of graphene the phenomenon that black alkene is reunited, therefore after addition chelating agent, water body graphene disperses surely in slurry It is fixed, it does not settle, does not agglomerate, conducive to the export of graphene slurry, with the continuous addition for hitting agent, graphene slurry gradually tends to Saturation, therefore its yield is not changing, therefore is 10-20% hitting agent content, the traits of yield of water body graphene slurry is more excellent.

Embodiment 26-33

On the basis of embodiment 1, wherein natural graphite powder content is 75%, and tearing layer agent content open is 12%, and tearing a layer agent open is Percarbonic acid amine and potassium peroxide mixture, tearing cane sugar content in layer agent open is the 9% of natural graphite powder, mixing speed 50-200r/ Then min, mixing time 2-4h carry out heating repeatedly and cooling processing 5 times, wherein heating is 64 DEG C, cooling down is 42 DEG C； The ultrasonic disperse time is 28min, and shocks agent is PTDA and PDTA, and content 13%, mixing speed is 125r/min, when stirring Between be 3.3h.

It in view of graphite and tears open after layer agent be mixed, the shadow of mixing speed and mixing time to water body graphene yield It rings, in the case where other conditions are constant, by changing mixing speed and mixing time, investigate graphene slurry yield, implement Example 26-30, as shown in table 6.

Table 6:

As can be seen from Table 6, with the extension of mixing time, what the yield presentation of water body graphene slurry was gradually increasing becomes Gesture, this is primarily due under this mixing speed, can make natural graphite powder and tear layer agent open under the action of sugar, can be quick Infiltration and wetting, improve the speed of infiltration and wetting, can effectively save cost, at the same with the extension graphite powder of time and It tears layer agent infiltration open and wetting basically reaches saturation, continue to stir the water body that the content of graphene does not continue to improve, therefore prepares There is no significant changes for the yield of graphene slurry；Simultaneously with the raising of mixing speed, the yield of water body graphene slurry is first It is reduced after increase, this is primarily due to being gradually increasing with mixing speed, and the graphene molecules separated may be because stirring Excessive velocities are mixed, agglomeration occur, the structure of graphene is caused to change, thereby reduce the performance of graphene, therefore Low whipping speed is 100-150r/min, and the yield of mixing time 3-3.5h, water body graphene slurry are more excellent.

Embodiment 34-41

On the basis of embodiment 1, wherein natural graphite powder content is 75%, and tearing layer agent content open is 14%, and tearing a layer agent open is Potassium percarbonate and peroxamine mixture, tearing cane sugar content in layer agent open is the 4% of natural graphite powder, and mixing speed is 120r/ Then min, mixing time 3.2h carry out heating repeatedly and cooling processing 5 times, wherein heating is 64 DEG C, cooling down is 42 DEG C； The ultrasonic disperse time is 29min, and shocks agent is PTDA and HEDTA, and content 11%, mixing speed 100-150r/min stirs Mixing the time is 3-3.5h.

After hitting agent addition, the influence of mixing speed and mixing time to water body graphene yield, at other In the case that part is constant, by changing mixing speed and mixing time, graphene slurry yield, embodiment 34-41, such as table are investigated Shown in 7.

Table 7:

As can be seen from Table 7, with the extension of mixing time, what the yield presentation of water body graphene slurry was gradually increasing becomes Gesture, this is primarily due to, and under this mixing speed, can make the graphene molecules separated and chelating agent snap action, The phenomenon that making the graphene separated quickly be in sequestering properties, graphene is avoided to reunite, influences the property of graphene Can, with the extension of mixing time, the graphene chelation separated weakens, and the performance change of graphene slurry is gradually It reduces, therefore continues to stir, the performance of graphene slurry is influenced little；Simultaneously with the raising of mixing speed, water body graphite The yield of alkene slurry first increases to be reduced afterwards, this is primarily due to being gradually increasing with mixing speed, the graphite separated Alkene molecule with hit agent carry out chelation when, may be too fast because of mixing speed, cause graphitic molecules also not with It hits agent and carries out agglomeration occur when chelation, thereby reduce the performance of graphene, therefore low whipping speed is 100- The yield of 150r/min, mixing time 3-3.5h, water body graphene slurry are more excellent.

Comparative example 1

On the basis of embodiment 1, it under conditions of other conditions are constant, tears open and does not add sugar in layer agent, stone obtained Black alkene slurry yield only has 60.12%, this illustrates to add sugar, facilitates the infiltration and wetting of natural graphite powder, improves infiltration Thoroughly with the speed of wetting, sugar is not added, natural graphite powder weakens with the infiltration and wetting action for tearing layer agent open, when increasing effect Between, it is unfavorable for the progress of reaction.

Comparative example 2

On the basis of embodiment 1, it in the case where other conditions are constant, tears a layer agent open and is changed to concentrated nitric acid, water body graphene Slurry yield is 92.37%.

Comparative example 3

On the basis of embodiment 1, it in the case where other conditions are constant, tears a layer agent open and is changed to SODIUM PERCARBONATE, water body graphite Alkene yield is 90.46%.

From comparative example 2 and comparison 3 as can be seen that the change of production of graphene slurry obtained is little, but in comparative example 2 Concentrated nitric acid has been used in tearing layer agent open, there is strong corrosive, have strong stimulation and corrosiveness to skin and mucous membrane, it is readily volatilized, Cause the pollution of environment；Tear the compound that layer agent contains sodium ion in comparative example 3 open, the compound with sodium ion may not apply to Plant irrigation easily causes the inverse growth of plant；The present invention is avoided using strong acid, highly basic and compound material containing sodium ion Material, ensure that and preparing environmental protection and zero-emission on grapheme material, avoid environmental pollution.

The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims

1. a kind of water body graphene slurry, which is characterized in that the graphene slurry by following percentage composition raw material preparation and At natural graphite powder 70-80%, tearing layer agent open is 10-20%, and shock agent is 10-20%.

2. a kind of production method of water body graphene slurry as described in claim 1, which comprises the following steps:

(2) it by natural graphite powder and tears a layer agent open and is sent in blender and be sufficiently mixed, then carry out heating and cooling processing；

3. water body graphene slurry production method according to claim 2, which is characterized in that sugar described in step (1) Account for the 0.1%~10% of natural graphite.

4. water body graphene slurry production method according to claim 2, which is characterized in that cross carbon described in step (1) Sour object or peroxide are the one or more of potassium substrate or amine base compound.

5. water body graphene slurry production method according to claim 2, which is characterized in that hit described in step (2) Agent is EDTA, PTDA, PDTA, the one or more of the polymers such as HEDTA.

6. water body graphene slurry production method according to claim 2, which is characterized in that in step (2), wherein stirring Mixing speed is 100-150r/min, mixing time 3-3.5h in machine.

7. water body graphene slurry production method according to claim 2, which is characterized in that in step (2), the lifting Temperature processing is that heating repeatedly and cooling processing 5 times are carried out in quartz ampoule, wherein heating up is 60-65 DEG C, is cooled down as 40-45 ℃。

8. water body graphene slurry production method as claimed in claim 2, which is characterized in that in step (3), the ultrasonic disperse Temperature is 55 DEG C, and ultrasonic disperse power is 5kW, and the ultrasonic disperse time is 25-30min.

9. water body graphene slurry production method according to claim 2, which is characterized in that in step (4) in blender Mixing speed is 100-150r/min, and the shock agent reaction time is 1.5h.