CN109943111A - A kind of preparation method of graphene-based anti-corrosion reinforcing bar - Google Patents
A kind of preparation method of graphene-based anti-corrosion reinforcing bar Download PDFInfo
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Abstract
A kind of preparation method of graphene-based anti-corrosion reinforcing bar, it is related to a kind of preparation method of anti-corrosion reinforcing bar.Rebar surface Damage of Passive Film reinforcing bar is caused to corrode when the invention aims to solve the problem of that existing Reinforcing Steel Bar In Reinforced Concrete Structure surface amount of chloride ions is accumulated to a certain amount of.Method: the one, pretreatment of reinforcing bar；Two, silane coupler solution is prepared；Three, silane coupler modified reinforcing bar；Four, ultrasonic disperse；Five, watersoluble plumbago alkene solution modification reinforcing bar obtains graphene-based anti-corrosion reinforcing bar.For graphene-based anti-corrosion reinforcing bar prepared by the present invention compared with the untreated reinforcing bar of blank sample, corrosion electric current density can be reduced to 1 × 10‑9~0A/cm2, corrosion potential can be improved to more than -0.40V (vs.SCE), ultimate bond stress decline 3%~5%.The present invention can get a kind of graphene-based anti-corrosion reinforcing bar.
Description
Technical field
The present invention relates to a kind of preparation methods of anti-corrosion reinforcing bar.
Background technique
Now and in the long duration from now on, reinforced concrete structure is as structure shape main in field of civil engineering
Formula plays extremely important effect.In recent years, with the fast-developing implementation of China's economic society, China is simultaneously
It will be chronically at the construction of large-scale infrastructure, in the infrastructure for largely building up armored concrete, while every year because of steel
The steel quantity that muscle corrosion is scrapped and is not available increases, and causes huge national economy loss.Great amount of investment over ten billion
Concrete works just build up or are building, fermenting among design.For example, the overall length 36km being open to the traffic for 2008
Construction of Hangzhou Bay Cross-sea Bridge；The Jiaozhou Bay of Qingdao bridge spanning the sea for the overall length 34.48km being open to the traffic for 2011；By 2018, at present
It will be open to traffic, invest the pearl Hongkong and Macro bridge for surpassing hundred billion yuan.However, under the conditions of these locating severe Service Environments and expend number with
The endurance issues of the concrete works of the infrastructure of ten thousand meter national economy are related to the development of national economy and the life of the people
Life safety.
The reinforced concrete structure in natural environment, corrosion caused by the invasion of chloride ion are that its durability reduces most
Main cause.Under the action of the factors such as diffusion, convection current, electromigration, capillary attraction, chloride ion is invaded in concrete, is reached
Rebar surface.When rebar surface amount of chloride ions is accumulated to a certain amount of, it will cause rebar surface Damage of Passive Film, in oxygen and
In the presence of moisture, reinforcing bar corrodes.So spontaneous corrosion erosion environment acts on lower reinforced concrete anti-corrosion
Durable Journal of Sex Research is always domestic and international hot spot.But previous anticorrosive paint using effect on reinforced concrete structure is not very
Good, steel bar corrosion is serious, and building structure is caused not to be available, and traditional coating will affect between reduction reinforcing bar and concrete
Cohesive force, to influence the bearing capacity of whole building.
Summary of the invention
The invention aims to solve existing Reinforcing Steel Bar In Reinforced Concrete Structure surface amount of chloride ions be accumulated to it is a certain amount of
When cause rebar surface Damage of Passive Film, the problem of reinforcing bar corrodes, and a kind of preparation of graphene-based anti-corrosion reinforcing bar is provided
Method.
A kind of preparation method of graphene-based anti-corrosion reinforcing bar, is completed by the following steps:
One, the pretreatment of reinforcing bar:
The iron rust for removing rebar surface first reuses deionized water and is cleaned by ultrasonic to reinforcing bar, then will be after ultrasonic cleaning
Reinforcing bar is dried, the reinforcing bar after obtaining degreasing and rust removal, is finally put into the reinforcing bar after degreasing and rust removal spare in hermetic bag；
Two, silane coupler solution is prepared:
Silane coupling agent is added in distilled water, is stirred for uniformly, obtaining silane coupler solution；
The volume ratio of silane coupling agent described in step 2 and distilled water is 1:(3~5)；
Three, silane coupler modified reinforcing bar:
1., the reinforcing bar after degreasing and rust removal is immersed in 15min in the silane coupler solution that temperature is 25 DEG C~50 DEG C~
30min, then reinforcing bar is taken out；
2., repeat step 3 1. one time to three times, then will reinforcing bar after degreasing and rust removal take out after be put into temperature be 80 DEG C~
Dry 2h~4h in 100 DEG C of baking oven, obtain it is silane coupler modified after reinforcing bar；
Four, ultrasonic disperse:
By watersoluble plumbago alkene solution ultrasonic power be 150W~200W under ultrasonic disperse 15min~30min, obtain ultrasound
Watersoluble plumbago alkene solution after dispersion；
Five, watersoluble plumbago alkene solution modification reinforcing bar:
1., will be silane coupler modified after reinforcing bar be immersed in 5min in the watersoluble plumbago alkene solution after ultrasonic disperse~
10min, then reinforcing bar is taken out；
2., repeat step 5 1. one time to three times, then will be silane coupler modified after reinforcing bar take out after be put into temperature and be
Dry 2h~4h, obtains graphene-based anti-corrosion reinforcing bar in 80 DEG C~100 DEG C of baking oven.
The present invention has the advantage that
One, silane coupling agent has good transition connection function, the graphene that the present invention uses silane coupling agent to prepare
Base anti-corrosion reinforcing bar solves graphene and is applied directly on reinforcing bar, and graphene and rebar surface adhere to bad problem, solves
Graphene directly forms the problem of Van der Waals force and Hydrogen bonding forces difference on the surface that reinforcing bar substrate combines, and is allowed to be formed reliable
Covalent bond and chemical bond increase its stable bond power with reinforcing bar substrate；
Two, traditional coating is coated on reinforcing bar to the cohesive force that can be reduced between reinforcing bar and concrete, to influence entire
The problem of bearing capacity of building, it is to utilize graphene sheet layer that it is mostly, which to add anticorrosive paint of graphene etc. currently on the market,
The dispersed path for increasing corrosion medium factor arrival substrate surface with barrier property, and the barrier property of graphene lamella itself is simultaneously
Do not utilize；Compared with traditional handicraft, the present invention uses silane coupler modified reinforcing bar, forms one layer of silane idol in rebar surface
Join agent, silane coupling agent has good transition connection function, graphene sheet layer is covered on reinforcing bar substrate surface, utilizes it
The insulating of body is isolated the corrosion medium factors such as chloride ion, ambient oxygen partial, hydrone, and steel bar anti-corrosion performance can be made big
It is big to increase, it plays a protective role；
Three, graphene-based anti-corrosion reinforcing bar prepared by the present invention will not be due to the machine of aggregate in armored concrete process of vibrating
Tool frictional force causes rebar surface graphene to destroy, it was demonstrated that in concreting process of vibrating, graphite prepared by the present invention
The graphite ene coatings of alkenyl anti-corrosion rebar surface can keep complete globality；
Four, for graphene-based anti-corrosion reinforcing bar prepared by the present invention compared with the untreated reinforcing bar of blank sample, corrosion current is close
Degree can be reduced to 1 × 10-9A/cm2~0A/cm2, corrosion potential can be improved to more than -0.40V (vs.SCE)；
Five, graphene-based anti-corrosion reinforcing bar prepared by the present invention and the untreated reinforcing bar of the blank sample (steel after degreasing and rust removal
Muscle) it compares, ultimate bond stress decline 3%~5%, it follows that the influence of method of the invention to interfacial adhesion is extremely micro-
It is weak.
The present invention can get a kind of graphene-based anti-corrosion reinforcing bar.
Detailed description of the invention
Fig. 1 is the digital photograph figure of the spiral after the degreasing and rust removal that comparative example one obtains；
Fig. 2 is the digital photograph figure for the graphene-based anti-corrosion spiral that embodiment one obtains；
Fig. 3 is the digital photograph figure of the plain steel-bar after the degreasing and rust removal that comparative example two obtains；
Fig. 4 is the digital photograph figure for the graphene-based anti-corrosion plain steel-bar that embodiment two obtains；
Fig. 5 is Tafel polarization curve, the Tafel of the 1 graphene-based anti-corrosion spiral obtained for embodiment one in figure
Polarization curve, 2 be the Tafel polarization curve of the spiral after the degreasing and rust removals that comparative example one obtains.
Specific embodiment
Specific embodiment 1: present embodiment is a kind of preparation method of graphene-based anti-corrosion reinforcing bar, it is by following step
Suddenly it completes:
One, the pretreatment of reinforcing bar:
The iron rust for removing rebar surface first reuses deionized water and is cleaned by ultrasonic to reinforcing bar, then will be after ultrasonic cleaning
Reinforcing bar is dried, the reinforcing bar after obtaining degreasing and rust removal, is finally put into the reinforcing bar after degreasing and rust removal spare in hermetic bag；
Two, silane coupler solution is prepared:
Silane coupling agent is added in distilled water, is stirred for uniformly, obtaining silane coupler solution；
The volume ratio of silane coupling agent described in step 2 and distilled water is 1:(3~5)；
Three, silane coupler modified reinforcing bar:
1., the reinforcing bar after degreasing and rust removal is immersed in 15min in the silane coupler solution that temperature is 25 DEG C~50 DEG C~
30min, then reinforcing bar is taken out；
2., repeat step 3 1. one time to three times, then will reinforcing bar after degreasing and rust removal take out after be put into temperature be 80 DEG C~
Dry 2h~4h in 100 DEG C of baking oven, obtain it is silane coupler modified after reinforcing bar；
Four, ultrasonic disperse:
By watersoluble plumbago alkene solution ultrasonic power be 150W~200W under ultrasonic disperse 15min~30min, obtain ultrasound
Watersoluble plumbago alkene solution after dispersion；
Five, watersoluble plumbago alkene solution modification reinforcing bar:
1., will be silane coupler modified after reinforcing bar be immersed in 5min in the watersoluble plumbago alkene solution after ultrasonic disperse~
10min, then reinforcing bar is taken out；
2., repeat step 5 1. one time to three times, then will be silane coupler modified after reinforcing bar take out after be put into temperature and be
Dry 2h~4h, obtains graphene-based anti-corrosion reinforcing bar in 80 DEG C~100 DEG C of baking oven.
The purchase of watersoluble plumbago alkene solution described in present embodiment step 4 is limited from Nanjing Xian Feng nano material science and technology
Company.
Present embodiment has the advantages that
One, silane coupling agent has good transition connection function, the stone that present embodiment uses silane coupling agent to prepare
Mertenyl anti-corrosion reinforcing bar solves graphene and is applied directly on reinforcing bar, and graphene and rebar surface adhere to bad problem, solves
Graphene of having determined directly forms the problem of Van der Waals force and Hydrogen bonding forces difference on the surface that reinforcing bar substrate combines, and being allowed to be formed can
The covalent bond and chemical bond leaned on increases its stable bond power with reinforcing bar substrate；
Two, traditional coating is coated on reinforcing bar to the cohesive force that can be reduced between reinforcing bar and concrete, to influence entire
The problem of bearing capacity of building, it is to utilize graphene sheet layer that it is mostly, which to add anticorrosive paint of graphene etc. currently on the market,
The dispersed path for increasing corrosion medium factor arrival substrate surface with barrier property, and the barrier property of graphene lamella itself is simultaneously
Do not utilize；Compared with traditional handicraft, present embodiment uses silane coupler modified reinforcing bar, forms one layer of silicon in rebar surface
Alkane coupling agent, silane coupling agent have good transition connection function, graphene sheet layer are covered on reinforcing bar substrate surface, utilize
The insulating of itself is isolated the corrosion medium factors such as chloride ion, ambient oxygen partial, hydrone, can make steel bar anti-corrosion
It can greatly increase, play a protective role；
Three, the graphene-based anti-corrosion reinforcing bar of present embodiment preparation will not be due to aggregate in armored concrete process of vibrating
Mechanical friction cause rebar surface graphene to destroy, it was demonstrated that in the concreting process of vibrating, present embodiment system
The graphite ene coatings of standby graphene-based anti-corrosion rebar surface can keep complete globality；
Four, the graphene-based anti-corrosion reinforcing bar of present embodiment preparation is compared with the untreated reinforcing bar of blank sample, corrosion electricity
Current density can be reduced to 1 × 10-9A/cm2~0A/cm2, corrosion potential can be improved to more than -0.40V (vs.SCE)；
Five, the graphene-based anti-corrosion reinforcing bar and the untreated reinforcing bar of blank sample of present embodiment preparation are (after degreasing and rust removal
Reinforcing bar) compare, ultimate bond stress decline 3%~5%, it follows that shadow of the method for present embodiment to interfacial adhesion
Sound is extremely faint.
Present embodiment can get a kind of graphene-based anti-corrosion reinforcing bar.
Specific embodiment 2: the differences between this implementation mode and the specific implementation mode are that: using being impregnated in step 1
The absorbent cotton of dehydrated alcohol wipes the surface of reinforcing bar to remove the iron rust of rebar surface.Other steps and one phase of specific embodiment
Together.
Specific embodiment 3: one of present embodiment and specific embodiment one or two difference are: making in step 1
Reinforcing bar is cleaned by ultrasonic with deionized water, the power of ultrasonic cleaning is 150W~200W, the time of ultrasonic cleaning be 5min~
15min.Other steps are the same as one or two specific embodiments.
Specific embodiment 4: one of present embodiment and specific embodiment one to three difference are: being done in step 1
Dry temperature is 80 DEG C~100 DEG C, and the dry time is 2h~4h.Other steps are identical as specific embodiment one to three.
Specific embodiment 5: one of present embodiment and specific embodiment one to four difference are: institute in step 2
The silane coupling agent stated is KH550.Other steps are identical as specific embodiment one to four.
Specific embodiment 6: one of present embodiment and specific embodiment one to five difference are: institute in step 2
The volume ratio of the silane coupling agent and distilled water stated is 1:(3~4).Other steps are identical as specific embodiment one to five.
Specific embodiment 7: one of present embodiment and specific embodiment one to six difference are: institute in step 2
The volume ratio of the silane coupling agent and distilled water stated is 1:(4~5).Other steps are identical as specific embodiment one to six.
Specific embodiment 8: one of present embodiment and specific embodiment one to seven difference are: step 3 2. in
It repeats step 3 1. one time to two times, then is put into after the reinforcing bar after degreasing and rust removal is taken out in the baking oven that temperature is 80 DEG C~90 DEG C
Dry 2h~3h, obtain it is silane coupler modified after reinforcing bar.Other steps are identical as specific embodiment one to seven.
Specific embodiment 9: one of present embodiment and specific embodiment one to eight difference are: step 5 2. in
Repeat step 5 1. one time to two times, then will be silane coupler modified after reinforcing bar take out after to be put into temperature be 80 DEG C~90 DEG C
Dry 2h~3h, obtains graphene-based anti-corrosion reinforcing bar in baking oven.Other steps are identical as specific embodiment one to eight.
Beneficial effects of the present invention are verified using following embodiment:
Embodiment one: a kind of preparation method of graphene-based anti-corrosion spiral is completed by the following steps:
One, the pretreatment of reinforcing bar:
The surface for wiping reinforcing bar using the absorbent cotton for being impregnated with dehydrated alcohol first, removes the iron rust of rebar surface, then
Ultrasonic power is to be cleaned by ultrasonic 10min to reinforcing bar using deionized water under 200W, then the reinforcing bar after ultrasonic cleaning is dried,
Reinforcing bar after degreasing and rust removal is finally put into spare in hermetic bag by the reinforcing bar after obtaining degreasing and rust removal；
Reinforcing bar described in step 1 is spiral；
Two, silane coupler solution is prepared:
Silane coupling agent is added in distilled water, is stirred for uniformly, obtaining silane coupler solution；
The volume ratio of silane coupling agent described in step 2 and distilled water is 1:4；
Three, silane coupler modified reinforcing bar:
1., the reinforcing bar after degreasing and rust removal is immersed in 15min in the silane coupler solution that temperature is 25 DEG C, then by reinforcing bar
It takes out；
2., repeat step 3 1. one time, then will reinforcing bar after degreasing and rust removal take out after be put into the baking oven that temperature is 80 DEG C
Dry 2h, obtain it is silane coupler modified after reinforcing bar；
Four, ultrasonic disperse:
By watersoluble plumbago alkene solution ultrasonic power be 200W under ultrasonic disperse 15min, it is aqueous after obtaining ultrasonic disperse
Graphene solution；
Watersoluble plumbago alkene solution described in step 4 is bought from Nanjing Xian Feng Nono-material Science & Technology Ltd.；
Five, watersoluble plumbago alkene solution modification reinforcing bar:
1., will be silane coupler modified after reinforcing bar be immersed in 5min in the watersoluble plumbago alkene solution after ultrasonic disperse, then
Reinforcing bar is taken out；
2., repeat step 5 1. one time, then will be silane coupler modified after reinforcing bar take out after to be put into temperature be 80 DEG C
Dry 2h, obtains graphene-based anti-corrosion spiral in baking oven.
Embodiment two: the difference of the preparation method and embodiment one of the graphene-based anti-corrosion plain steel-bar of the present embodiment is:
Reinforcing bar described in step 1 is plain steel-bar.Other steps and parameter and embodiment one are all the same.
Comparative example one: the spiral after degreasing and rust removal is completed by the following steps:
The surface for wiping reinforcing bar using the absorbent cotton for being impregnated with dehydrated alcohol first, removes the iron rust of rebar surface, then
Ultrasonic power is to be cleaned by ultrasonic 10min to reinforcing bar using deionized water under 200W, then the reinforcing bar after ultrasonic cleaning is dried,
Reinforcing bar after degreasing and rust removal is finally put into spare in hermetic bag by the reinforcing bar after obtaining degreasing and rust removal；
Reinforcing bar described in step 1 is spiral.
Comparative example two: the preparation method and comparative example one of the plain steel-bar after the present embodiment degreasing and rust removal are not
Be with point: reinforcing bar described in step 1 is plain steel-bar.Other steps and parameter and comparative example one are all the same.
Fig. 1 is the digital photograph figure of the spiral after the degreasing and rust removal that comparative example one obtains；
Fig. 2 is the digital photograph figure for the graphene-based anti-corrosion spiral that embodiment one obtains；
Fig. 3 is the digital photograph figure of the plain steel-bar after the degreasing and rust removal that comparative example two obtains；
Fig. 4 is the digital photograph figure for the graphene-based anti-corrosion plain steel-bar that embodiment two obtains；
By FIG. 1 to FIG. 4 it is found that the graphene-based corrosion-inhibiting coating on spiral and plain steel-bar can be sprawled effectively,
Fine and close bright corrosion-inhibiting coating is formed on spiral and plain steel-bar；
In order to further verify the anti-corrosion effect for the graphene-based anti-corrosion spiral that embodiment one obtains, by embodiment one
Spiral after the degreasing and rust removal that obtained graphene-based anti-corrosion spiral and comparative example one obtains is immersed in respectively
In the NaCl solution that mass fraction is 3.5% for 24 hours, then to embodiment one the graphene-based anti-corrosion spiral and comparison obtained is real
Spiral after applying the degreasing and rust removal that example one obtains carries out the test of Tafel polarization curve, as a result sees Fig. 5；
Fig. 5 is Tafel polarization curve, the Tafel of the 1 graphene-based anti-corrosion spiral obtained for embodiment one in figure
Polarization curve, 2 be the Tafel polarization curve of the spiral after the degreasing and rust removals that comparative example one obtains；
As can be seen from Figure 5, relative to the untreated reinforcing bar of blank sample (after the degreasing and rust removal that i.e. comparative example one obtains
Spiral) it compares, the current density for the graphene-based anti-corrosion spiral that embodiment one obtains reduces at least three quantity
Grade, corrosion potential improve about 200mV.
In order to verify the graphene-based corrosion-inhibiting coating in graphene-based anti-corrosion spiral surface that embodiment one obtains to steel reinforced concrete
The influence of interfacial adhesion is added under the corrosive environment of NaCl in the concrete of C55 and has carried out pull-out test test, and NaCl's adds
The mass ratio for entering amount and the concrete mixing water of C55 is 5:100；Testing the untreated reinforcing bar of blank sample, (i.e. comparison is real
Spiral after applying the degreasing and rust removal that example one obtains), the obtained graphene-based anti-corrosion spiral of embodiment one and existing skill
The spiral that E51 (618) epoxy coating is contained on surface in art is added under the corrosive environment of NaCl in the concrete of C55
Drawing, test result is shown in Table 1.
Table 1
As shown in Table 1, the graphene-based corrosion-inhibiting coating on the graphene-based anti-corrosion spiral surface that embodiment one obtains is only
Cause about to drop 3.12% under the ultimate bond stress of armored concrete, and E51 (618) epoxy resin is contained on surface in the prior art
E51 (618) epoxy coating on the spiral surface of coating causes ultimate bond stress to decline 26.97%, it follows that
Influence of the graphene-based corrosion-inhibiting coating on the graphene-based anti-corrosion spiral surface that embodiment one obtains to interfacial adhesion is extremely
It is faint.
Claims (10)
1. a kind of preparation method of graphene-based anti-corrosion reinforcing bar, it is characterised in that a kind of preparation method of graphene-based anti-corrosion reinforcing bar
It is completed by the following steps:
One, the pretreatment of reinforcing bar:
The iron rust for removing rebar surface first reuses deionized water and is cleaned by ultrasonic to reinforcing bar, then by the reinforcing bar after ultrasonic cleaning
It is dried, the reinforcing bar after obtaining degreasing and rust removal, is finally put into the reinforcing bar after degreasing and rust removal spare in hermetic bag；
Two, silane coupler solution is prepared:
Silane coupling agent is added in distilled water, is stirred for uniformly, obtaining silane coupler solution；
The volume ratio of silane coupling agent described in step 2 and distilled water is 1:(3~5)；
Three, silane coupler modified reinforcing bar:
1., the reinforcing bar after degreasing and rust removal is immersed in 15min in the silane coupler solution that temperature is 25 DEG C~50 DEG C~
30min, then reinforcing bar is taken out；
2., repeat step 3 1. one time to three times, then by after degreasing and rust removal reinforcing bar take out after be put into temperature be 80 DEG C~100 DEG C
Baking oven in dry 2h~4h, obtain it is silane coupler modified after reinforcing bar；
Four, ultrasonic disperse:
By watersoluble plumbago alkene solution ultrasonic power be 150W~200W under ultrasonic disperse 15min~30min, obtain ultrasonic disperse
Watersoluble plumbago alkene solution afterwards；
Five, watersoluble plumbago alkene solution modification reinforcing bar:
1., will be silane coupler modified after reinforcing bar be immersed in 5min~10min in the watersoluble plumbago alkene solution after ultrasonic disperse,
Reinforcing bar is taken out again；
2., repeat step 5 1. one time to three times, then will be silane coupler modified after reinforcing bar take out after be put into temperature be 80 DEG C
Dry 2h~4h, obtains graphene-based anti-corrosion reinforcing bar in~100 DEG C of baking oven.
2. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that make in step 1
The surface of reinforcing bar is wiped with the absorbent cotton for being impregnated with dehydrated alcohol to remove the iron rust of rebar surface.
3. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that make in step 1
Reinforcing bar is cleaned by ultrasonic with deionized water, the power of ultrasonic cleaning is 150W~200W, the time of ultrasonic cleaning be 5min~
15min。
4. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that done in step 1
Dry temperature is 80 DEG C~100 DEG C, and the dry time is 2h~4h.
5. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that institute in step 2
The silane coupling agent stated is KH550.
6. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that institute in step 2
The volume ratio of the silane coupling agent and distilled water stated is 1:(3~4).
7. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that institute in step 2
The volume ratio of the silane coupling agent and distilled water stated is 1:(4~5).
8. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that step 3 2. in
It repeats step 3 1. one time to two times, then is put into after the reinforcing bar after degreasing and rust removal is taken out in the baking oven that temperature is 80 DEG C~90 DEG C
Dry 2h~3h, obtain it is silane coupler modified after reinforcing bar.
9. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that step 5 2. in
Repeat step 5 1. one time to two times, then will be silane coupler modified after reinforcing bar take out after to be put into temperature be 80 DEG C~90 DEG C
Dry 2h~3h, obtains graphene-based anti-corrosion reinforcing bar in baking oven.
10. a kind of preparation method of graphene-based anti-corrosion reinforcing bar according to claim 1, it is characterised in that institute in step 1
The reinforcing bar stated is spiral or plain steel-bar.
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| CN113404169A (en) * | 2021-07-06 | 2021-09-17 | 江苏科技大学 | Coral concrete multiple-anticorrosion construction method in marine environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404169A (en) * | 2021-07-06 | 2021-09-17 | 江苏科技大学 | Coral concrete multiple-anticorrosion construction method in marine environment |
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