CN108409229B - Modified resistance-lowering material of a kind of graphene and preparation method thereof - Google Patents
Modified resistance-lowering material of a kind of graphene and preparation method thereof Download PDFInfo
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- CN108409229B CN108409229B CN201810192105.XA CN201810192105A CN108409229B CN 108409229 B CN108409229 B CN 108409229B CN 201810192105 A CN201810192105 A CN 201810192105A CN 108409229 B CN108409229 B CN 108409229B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 74
- 239000000463 material Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004917 carbon fiber Substances 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 16
- 239000010439 graphite Substances 0.000 claims abstract description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 15
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000011507 gypsum plaster Substances 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 13
- 239000000440 bentonite Substances 0.000 claims abstract description 13
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000006185 dispersion Substances 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 18
- 229940092782 bentonite Drugs 0.000 claims description 11
- 238000010907 mechanical stirring Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 8
- 229940080314 sodium bentonite Drugs 0.000 claims description 8
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 6
- 150000001336 alkenes Chemical class 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- JAJWGJBVLPIOOH-IZYKLYLVSA-M sodium taurocholate Chemical compound [Na+].C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(=O)NCCS([O-])(=O)=O)C)[C@@]2(C)[C@@H](O)C1 JAJWGJBVLPIOOH-IZYKLYLVSA-M 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000011268 mixed slurry Substances 0.000 claims description 2
- 238000004210 cathodic protection Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract 2
- 230000002421 anti-septic effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000002585 base Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
- C04B2111/94—Electrically conducting materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides modified resistance-lowering material of a kind of graphene and preparation method thereof.It is made of the component proportion of following parts by weight: cement 20~50, crystalline flake graphite 20~40, graphene 0.01~4, carbon fiber 1~10, zinc powder 1~10, dispersing agent 1~10, steel fibre 1~10, bentonite 10~30, the plaster of paris 0.5~2.Preparation method is: graphene dispersing solution is made in the graphene, dispersing agent and water for choosing the formula first, then the uniform suspension of graphene dispersion is obtained by ultrasonic treatment in case using, and bentonite and the plaster of paris are added in this suspension and stirred evenly；In addition cement and carbon fiber, steel fibre machinery are stirred, are added thereto after later mixing zinc powder with crystalline flake graphite, and be mixed evenly；Above two mixed liquor is merged and is uniformly mixed.The modified resistance-lowering material resistivity of the graphene is small, high mechanical properties, use scope is wide, antiseptic property is good, form of construction work is simple.
Description
Technical field
The present invention relates to a kind of grounding resistance-reducing materials and preparation method thereof, belong to earth work Material Field.
Background technique
Skyscraper is easy to be struck by lightning in thunder and lightning weather, as the precautionary measures, it will usually earth protective device is set,
Resistance-lowering material is exactly a kind of engineering material for reducing grounding electrode surrounding soil resistance in earth work protective device.
Early stage resistance-lowering material is mainly some metal salts or metal oxide, is ionized in water by these substances and generates band
Electron ion is to make the electric conductivity of soil increase.This mode is inevitably easy to cause to corrode to wire ground electrode, and
And resistance reducing effect vulnerable to soil moisture influence and cause material stability poor.Therefore, with the development of resistance-lowering material, again
Some organic matters (such as urine aldehyde, amide, resin) are added to form the jello with tridimensional network, to increase drop resistance
The water suction moisture retention of material reduces the loss of electrolyte, but its corrosivity is stronger, and the organic matter that cannot degrade exist but also
It is very big to the pollution of natural environment.Based on deficiency existing for chemical type resistance-lowering material, in recent years, people are for resistance-lowering material
Research and development are concentrated mainly on non-electrolyte solid powder (generally carbon materials) as conductive material, and Silicates material is gelling
The physical resistance-lowering material of object.This kind of resistance-lowering material directly leans on the conductive powder of itself to play the role of dropping resistance, not by the shadow of rainwater
It rings, substantially alleviates the corrosion to wire ground electrode.Meanwhile conductive characteristic is not also by acid-alkali salt, high/low temperature, humidity institute
The requirement of ground resistance stability is more easily satisfied in arid, short of rain, extremely frigid zones by limit.
Graphene be it is a kind of with good electric conductivity, thermal conductivity, high specific strength, bigger serface new material, permitted
It is multi-field to have obtained good application effect.Patent document (CN105957577A) discloses a kind of " earthy calcium-base bentonite
Base friction reducer " has used grapheme material, and wherein the adding manner of graphene is and carbon fiber, aluminium powder, nickel powder, zinc powder and oxygen
Change calcium is added jointly to be uniformly mixed.The effect of π-π stacking and stronger van der Waals interaction due to graphene film interlayer, cause stone
Black alkene is difficult to be uniformly dispersed in aqueous solution, is easy to reunite.Therefore, graphite is added using simple mode in above-mentioned patent
Alkene is difficult for it to be uniformly dispersed in resistance-lowering material, cannot give full play to the advantage of graphene enhancing drop resistance.Meanwhile the patent
In friction reducer joined a large amount of electrolytic salts, be likely to encounter rainwater and be lost, reduce resistance reducing effect.So far, although stone
Black alkene is paid close attention in resistance-lowering material field, but can give full play to graphene advantage to greatly improve resistance-lowering material comprehensive
The related report of energy is simultaneously few.
Summary of the invention
The purpose of the present invention is being directed to the problem of graphene dispersion difference, using graphene dispersion technology into cement matrix
Graphene is added, while adding conductive material, finally prepares that a kind of small resistivity, high mechanical properties, use scope be wide, anti-corrosion
Performance is good, the simple resistance-lowering material of form of construction work.
Technical problem to be solved by the invention is to provide a kind of, and the modified drop of the graphene with good service performance hinders material
Material and preparation method thereof.
A kind of modified resistance-lowering material of graphene of the present invention, it is made of the component proportion of following parts by weight:
Cement 20~50,
Crystalline flake graphite 20~40,
Graphene 0.01~4,
Carbon fiber 1~10,
Zinc powder 1~10,
Dispersing agent 1~10,
Steel fibre 1~10,
Bentonite 10~30,
The plaster of paris 0.5~2.
In the proportion, cement chooses No. 425 cement of common silicate, and crystalline flake graphite chose 200 mesh powders,
Graphene select the number of plies be 3-20 layer, lamella size 10-20um multi-layer graphene, carbon fiber choose length be 6-10mm,
Diameter is 7um；
In the proportion, length of steel fiber 20-40mm, draw ratio 30-70 improve material for improving electric conductivity
Expect mechanical property；Dispersing agent is neopelex or polyvinylpyrrolidone or sodium taurocholate；
In the proportion, zinc powder chose the powder of 325 mesh, for preventing the surface corrosion of contact electrode, played cathode
Protective effect, and increase the electric conductivity of resistance-lowering material；Bentonite chooses sodium bentonite or calcium-base bentonite, and granularity is less than 300
Mesh, to increase the electric conductivity of this material in a wetted condition；The plaster of paris chooses granularity less than 300 mesh, for adjusting the solidifying of cement
Gu the time simultaneously increases strength of cement.
A kind of preparation method of the modified resistance-lowering material of graphene as described above, includes the following steps:
(1), choose and meet the graphene, dispersing agent and water of the ratio requirement and be made graphene dispersing solution, graphene with
Water ratio carries out ultrasonic treatment 2 hours between 1:20-1:30, by dispersion liquid, and stirs evenly；
(2), the bentonite for meeting the ratio requirement and the plaster of paris are added in mixed liquor made from step (1), machine
Tool, which stirs 1 hour, reaches uniform state；
(3), by the cement for meeting the ratio requirement and carbon fiber, reach uniform state within steel fibre mechanical stirring 1 hour,
Then it is added thereto to remix 1 hour after the zinc powder for meeting the ratio requirement being mixed with crystalline flake graphite and reaches uniform state,
And the mixture obtained herein is all added in mixed slurry made from step (2), stirring reaches uniform state in 1 hour；
(4), by slurry agitation made from step (3) it is uniform after pour into mold, stand 24 hours solidification after obtain described in
The modified resistance-lowering material of graphene.
Modified resistance-lowering material of a kind of graphene of the present invention and preparation method thereof, its advantages have:
The present invention uses graphene dispersion technology, by graphene uniform is added in resistance-lowering material, physical drop resistance material
Material can generally add cement as gelling object, and graphene has template effect to the formation of hydrated cementitious crystalline product, can promote
Regular nano-sized crystal body is formed into hydrolysis product of cement, to dramatically increase cement matrix intensity, toughness, electric conductivity, resistance to
The comprehensive performances such as corrosivity；On the other hand, the graphene of incorporation can be attached to the surface of the hydrated calcium silicate in cement, filling
Into the micron order pore between hydrated product, the consistency of material is effectively improved.Based on above-mentioned advantage, evenly dispersed lacks
Amount graphene just can be improved the comprehensive performance of resistance-lowering material in the present invention.Meanwhile the present invention is a kind of solid modules material, is not had
Use electrolyte as conductive constituent element, compared with traditional resistance-lowering material, material of the invention is high with intensity, resistance is small, nothing
Pollution, simple to install, Applicable temperature range are wide, and to the free from corrosion advantage of grounding electrode.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below further specifically to the present invention
Bright but following embodiment is only simple example of the invention, does not represent or limit the scope of the present invention, this
Invention protection scope is subject to claims.
Embodiment 1:
Step 1: choosing 3% graphene, 5% sodium taurocholate, which is poured into water, is prepared into graphene dispersing solution, graphene and water
Ratio be 1:25, and carry out ultrasonic agitation 2 hours.
Step 2: it is small that 20% sodium bentonite bentonite and 1% plaster of paris are added to stirring 1 in graphene dispersing solution
When reach uniform state.
Step 3: 27% cement is mixed with 7% carbon fiber and 7% steel fibre, after mechanical stirring 1 hour, it is added thereto
25% graphite and 5% zinc powder, which remix 1 hour, reaches uniform state, mixes again with the material that second step obtains later, and stir
It mixes 1 hour and reaches uniform state.
Step 4: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
Embodiment 2:
Step 1: choosing 4% graphene, 3% neopelex, which is poured into water, is prepared into graphene dispersing solution,
The ratio of graphene and water is 1:20, and carries out ultrasonic agitation 2 hours.
It is reached step 2: the plaster of paris of 20% sodium bentonite and 0.5% is added to stir 1 hour in graphene dispersing solution
To uniform state.
Step 3: 34% cement is mixed with 5% carbon fiber and 7% steel fibre, after mechanical stirring 1 hour, it is added thereto
20% graphite and 6.5% zinc powder, which remix 1 hour, reaches uniform state, mixes again with the material that second step obtains later, and
Stirring reaches uniform state in 1 hour.
Step 4: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
Embodiment 3:
Step 1: choosing 1% graphene, being poured into water for 5% polyvinylpyrrolidone is prepared into graphene dispersing solution, stone
The ratio of black alkene and water is 1:30, and carries out ultrasonic agitation 2 hours.
Reach step 2: the plaster of paris of 20% sodium bentonite and 1% is added to stir 1 hour in graphene dispersing solution
Uniform state.
Step 3: 30% cement is mixed with 5% carbon fiber and 7% steel fibre, after mechanical stirring 1 hour, it is added thereto
24% graphite and 7% zinc powder, which remix 1 hour, reaches uniform state, mixes again with the material that second step obtains later, and stir
It mixes 1 hour and reaches uniform state.
Step 4: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
Embodiment 4:
Step 1: choose 3% graphene, 4.5% sodium taurocholate, which is poured into water, is prepared into graphene dispersing solution, graphene with
The ratio of water is 1:20, and carries out ultrasonic agitation 2 hours.
It is reached step 2: the plaster of paris of 19% sodium bentonite and 1.5% is added to stir 1 hour in graphene dispersing solution
To uniform state.
Step 3: 30% cement is mixed with 5% carbon fiber and 7% steel fibre, after mechanical stirring 1 hour, it is added thereto
25% graphite and 5% zinc powder, which remix 1 hour, reaches uniform state, mixes again with the material that second step obtains later, and stir
It mixes 1 hour and reaches uniform state.
Step 4: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
Embodiment 5:
Step 1: choosing 2.5% graphene, 5% neopelex, which is poured into water, is prepared into graphene dispersion
The ratio of liquid, graphene and water is 1:25, and carries out ultrasonic agitation 2 hours.
It is reached step 2: the plaster of paris of 25% calcium-base bentonite and 1.5% is added to stir 1 hour in graphene dispersing solution
To uniform state.
Step 3: 29% cement is mixed with 5% carbon fiber and 5% steel fibre, after mechanical stirring 1 hour, it is added thereto
20% graphite and 7% zinc powder, which remix 1 hour, reaches uniform state, mixes again with the material that second step obtains later, and stir
It mixes 1 hour and reaches uniform state.
Step 4: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
In order to illustrate in the present invention graphene addition and dispersion technology can actually promote the performance of resistance-lowering material, this hair
It is bright also to have devised the experiment of two comparative examples and be compared.
Comparative example 1:
Step 1: being mixed and stirred for the plaster of paris of 20% sodium bentonite and 1% to reach uniform state in 1 hour.
Step 2: 35% cement is mixed with 7% carbon fiber and 7% steel fibre, after mechanical stirring 1 hour, it is added thereto
25% graphite and 5% zinc powder mix and reach uniform state in 1 hour, mixs again with the material that the first step obtains later, and stirring 1
Hour reaches uniform state.Later plus water, water weight are separately added according to the 40%-60% of above-mentioned resistance-lowering material proportion total weight.
Step 3: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
Comparative example 2:
Step 1: being mixed and stirred for 20% sodium bentonite and 1% plaster of paris, 3% graphene to reach equal in 1 hour
Even state.
Step 2: 32% cement is mixed with 7% carbon fiber and 7% steel fibre, after mechanical stirring 1 hour, it is added thereto
25% graphite and 5% zinc powder mix and reach uniform state in 1 hour, mixs again with the material that the first step obtains later, and stirring 1
Hour reaches uniform state.Later plus water, water weight are separately added according to the 40%-60% of above-mentioned resistance-lowering material proportion total weight.
Step 3: slurry obtained is poured into mold, stands 24 hours and obtain the modified drop resistance of graphene after its solidification
Module material.
Measure the basic performance such as table 1 and table 2 of material obtained by embodiment 1-5 and comparative example 1-2.Wherein, comparative example
1 graphene is not added, and comparative example 2 is added graphene and does not use dispersion technology.Performance test is all made of survey well known in the art
Trial work section carries out.As can be seen that compared with the resistance-lowering material performance that graphene is not added, by graphene uniform using dispersion technology
Resistivity can be reduced significantly by being added in resistance-lowering material, improve the strength of materials, and reduce the corrosion to ground connection metallic object
Rate, energy with good stability, and it is still able to maintain lower resistivity at low temperature.If only addition graphene is without making
With dispersion technology, since graphene dispersion is uneven, improvement is unobvious, and the properties of resistance-lowering material are significantly lower than this hair
The bright resistance-lowering material.
Table 1, basic performance situation
Table 2, temperature characterisitic test
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention equally should be considered as technical proposal scope disclosed in this invention.
Claims (2)
1. a kind of modified resistance-lowering material of graphene, which is characterized in that it is made of the component proportion of following parts by weight:
Cement 20~50,
Crystalline flake graphite 20~40,
Graphene 0.01~4,
Carbon fiber 1~10,
Zinc powder 1~10,
Dispersing agent 1~10,
Steel fibre 1~10,
Bentonite 10~30,
The plaster of paris 0.5~2；
Preparation method includes the following steps:
(1), graphene dispersing solution, graphene and water ratio is made in the graphene, dispersing agent and water that selection meets the ratio requirement
Example carries out ultrasonic treatment 2 hours between 1:20-1:30, by dispersion liquid, and stirs evenly,
(2), the bentonite for meeting the ratio requirement and the plaster of paris are added in mixed liquor made from step (1), machinery stirs
It mixes 1 hour and reaches uniform state,
(3), by the cement for meeting the ratio requirement and carbon fiber, reach uniform state within steel fibre mechanical stirring 1 hour, then
It is added thereto to remix after the zinc powder for meeting the ratio requirement is mixed with crystalline flake graphite and reaches within 1 hour uniform state, and will
The mixture obtained herein is all added in mixed slurry made from step (2), and stirring reaches uniform state in 1 hour,
(4), by slurry agitation made from step (3) it is uniform after pour into mold, stand 24 hours and obtain the stone after solidifying
The modified resistance-lowering material of black alkene.
2. the modified resistance-lowering material of a kind of graphene according to claim 1, which is characterized in that in the proportion, cement
No. 425 cement of common silicate are chosen, crystalline flake graphite chose 200 mesh powders, and it is 3-20 layers that graphene, which selects the number of plies, piece
Multi-layer graphene of the layer size at 10-20 μm, carbon fiber selection length is 6-10mm, diameter is 7 μm；
Length of steel fiber is 20-40mm, draw ratio 30-70, for improving electric conductivity, improvement material mechanical performance；Dispersing agent
It is neopelex or polyvinylpyrrolidone or sodium taurocholate；
Zinc powder chose the powder of 325 mesh, for preventing the surface corrosion of contact electrode, played the role of cathodic protection, and increase drop
Hinder the electric conductivity of material；Bentonite chooses sodium bentonite or calcium-base bentonite, granularity are existed less than 300 mesh with increasing this material
Electric conductivity under wet condition；The plaster of paris chooses granularity less than 300 mesh, for adjusting the setting time of cement and to increase cement strong
Degree.
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| CN110137704A (en) * | 2019-05-30 | 2019-08-16 | 武汉明心电力科技有限公司 | A kind of novel power transmission overhead line structures earthing pole material |
| CN112624725A (en) * | 2019-10-09 | 2021-04-09 | 中国科学院宁波材料技术与工程研究所 | Conductive concrete composition capable of being rapidly cured and formed, preparation method and application thereof |
| CN112688093B (en) * | 2020-12-24 | 2021-08-17 | 湖北省雷博盾科技有限公司 | Graphene modified grounding resistance-reducing module and processing method |
| CN113517082A (en) * | 2021-04-09 | 2021-10-19 | 湖南省雷博盾科技有限公司 | Resistance reducing liquid for grounding and preparation method thereof |
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| CN105957577B (en) * | 2016-05-05 | 2017-10-17 | 国网江西省电力科学研究院 | A kind of earthy calcium-base bentonite base friction reducer |
| CN106064907B (en) * | 2016-06-05 | 2018-03-02 | 南昌航空大学 | A kind of sulfonated polyaniline is modified Na-bentonite soil matrix friction reducer |
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