CN107216423B - A kind of antirust for reinforced concrete and preparation method thereof - Google Patents
A kind of antirust for reinforced concrete and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F226/06—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
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- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2652—Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/34—Monomers containing two or more unsaturated aliphatic radicals
- C08F212/36—Divinylbenzene
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
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Abstract
The present invention proposes a kind of antirust for reinforced concrete and preparation method thereof, the preparation method is the following steps are included: step S1: monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt being dissolved in the first organic solvent and is configured to the solution that mass fraction is 5-20%, initiator formation mixed solution is added after stablizing 5-10min after agitating and heating is warming up to 70-85 DEG C under the conditions of 1000-2000r/min；Step S2: to the resulting mixed solution and dripping divinylbenzene of step S1, stop obtaining reaction solution after reacting 6-24h；Step S3: being filtered by vacuum after reaction solution obtained by step S2 is cooled to 25 DEG C of room temperatures, and filter cake is placed in drying box under the conditions of 50-80 DEG C dry 6-24h, crushes the filter cake after drying to obtain corrosion inhibitor.A kind of antirust for reinforced concrete and preparation method thereof, compared with the prior art, preparation process is easy, raw material is easy to get, and preparation-obtained corrosion inhibitor belongs to high molecular material, and property is stable, environmentally protective, inhibition anticorrosion performance is excellent.
Description
Technical field
The present invention relates to reinforced concrete anti-rusting technical fields, and in particular to a kind of antirust for reinforced concrete and its preparation
Method.
Background technique
There is indicating a fine epochal beginning, armored concrete knot in Human Architecture history in the invention of armored concrete
Structure is easy to gather materials on the spot with it, resistance to compression and High anti bending strength, volume stability are good, be easy to construct, durability preferably etc. it is many excellent
Point becomes architectural engineering using the most universal, the most commonly used structure type of use scope.However, reinforcing bar in armored concrete
Occur corrosion lead to reinforced concrete structure premature failure, it has also become influence reinforced concrete structure durability an important factor for.
In actual use, the environmental activities such as reinforcement corrosion, concrete carbonization, alkali-aggregate reaction will lead to armored concrete appearance
Structural damage and crack cause armored concrete bearing capacity and deformability to decline, make the military service year of reinforced concrete structure
Limit greatly shortens.At the same time, safeguard and repair the expection that expense used in structure substantially exceeds people again.
In recent decades, the research of antirust for reinforced concrete has obtained very rapidly development, and mixing corrosion inhibitor becomes
It postpones the steel bar corrosion time and slows down the universal method of corrosion rate, and be the good technical measures of most economical practical and effect.
Such as in the Chinese patent application application No. is CN201010185725.4, that is, describe a kind of composite type reinforced concrete resistance
Rust agent, main component are calcium nitrite, sodium benzoate, calgon, zinc oxide and volcanic ash etc., which can be effective
Slow down the corrosion of reinforced concrete, the destruction that can be prevented or delay chloride ion to rebar passivation film, however, nitrous acid
The performances such as setting time, early strength and the later strength of salt and phosphate concrete multipair greatly have different degrees of negative shadow
It rings, and calcium nitrite pollutes environment, to human health；For another example application No. is CN201010517142.7 Chinese patents
In application, a kind of rust-resistant agent for concrete reinforcing bar and preparation method thereof is described, by dicarboxylic acids and organic amine reaction preparation gas phase
Corrosion inhibiter, and the obtained rust-resistant agent for concrete reinforcing bar such as sodium monofluorophosphate, calcium gluconate, the resistance of the invention are added on this basis
Rust agent has many advantages, such as that inhibition anticorrosion performance is excellent, the feature of environmental protection is good, although amido alcohols corrosion inhibiter can be to a certain extent
It prevents harmful ion from entering hand hay cutter muscle surface, reinforcing bar itself is protected or inadequate.By concrete shrinkage or under external force
When concrete generates cracking, when reinforcing bar and harmful substance directly contact, however it remains a possibility that corrosion.
Therefore, it is necessary to propose a kind of antirust for reinforced concrete and preparation method thereof, prepare with inhibition resistance rust property
Can the antirust for reinforced concrete of excellent, water-tolerant and environmental protection be applied in actual production.
Summary of the invention
The purpose of the present invention is to provide a kind of antirust for reinforced concrete and preparation method thereof.
The invention adopts the following technical scheme: a kind of preparation method of antirust for reinforced concrete, comprising the following steps:
Step S1: by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt
It is dissolved in the first organic solvent and is configured to the solution that mass fraction is 5-20%, agitating and heating liter under the conditions of 1000-2000r/min
Initiator is added after temperature to stable 5-10min after 70-85 DEG C and forms mixed solution；
Step S2: to the resulting mixed solution and dripping divinylbenzene of step S1, stop being reacted after reacting 6-24h
Liquid；
Step S3: it is filtered by vacuum after reaction solution obtained by step S2 is cooled to 25 DEG C of room temperatures, filter cake is placed in drying box
Dry 6-24h, crushes the filter cake after drying to obtain corrosion inhibitor under the conditions of 50-80 DEG C.
As a further improvement of the present invention, the step S1 to S3 is in N2It is carried out under atmosphere.
As a further improvement of the present invention, the mass ratio of the divinylbenzene and monomer ion liquid is 1-3:1.
As a further improvement of the present invention, the initiator is ammonium persulfate and/or potassium peroxydisulfate, and additional amount accounts for two
The 0.8-1.5% of vinyl benzene and monomer ion liquid gross mass.
As a further improvement of the present invention, first organic solvent be one of ethyl alcohol, methanol and acetonitrile or
It is a variety of.
As a further improvement of the present invention, the monomer ion liquid 1- vinyl -2- methyl -3- ethamine-imidazoles sun
Ion amino acid anion salt is prepared from the following steps:
Step D1: the preparation of intermediate: N- vinyl -2-methylimidazole is dissolved in the second organic solvent and is configured to quality point
Addition and the equimolar 2- bromine ethylamine hydrobromide of N- vinyl -2-methylimidazole after the solution that number is 5-10%, in 500-
12-36h is reacted after agitating and heating is warming up to 60-80 DEG C under the conditions of 1000r/min, is cooled to 25 DEG C of room temperatures after reaction, very
Filter cake is placed in drying box under the conditions of 50-80 DEG C dry 6-24h, obtains intermediate by empty pump filter；
Step D2: intermediate obtained by step D1 is dissolved in after methylene chloride is configured to the solution that mass fraction is 40-60%
Addition and the equimolar sodium hydroxide of intermediate, are stirred to react 6-24h in 1500-2000r/min, 25 DEG C, instead under room temperature
25 DEG C of room temperatures are cooled to after answering, place the product in dry 6-24h in drying box under the conditions of 50-80 DEG C；
Step D3: step D2 products therefrom is dissolved in and is configured to mass fraction in third organic solvent as the molten of 35-50%
Addition and the equimolar amino acid of step D2 products therefrom, are stirred at room temperature 6-18h, anti-under the conditions of 500-1000r/min after liquid
25 DEG C of room temperatures are cooled to after answering, place the product in dry 6-24h can obtain monomer ion under the conditions of 50-80 DEG C in drying box
Liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt.
As a further improvement of the present invention, the step D1 to D3 is in N2It is carried out under atmosphere.
As a further improvement of the present invention, second organic solvent, third organic solvent are ethyl alcohol, methanol and second
One of nitrile is a variety of.
A kind of antirust for reinforced concrete is prepared by a kind of preparation method of above-mentioned antirust for reinforced concrete.
A kind of antirust for reinforced concrete and preparation method thereof, compared with the prior art, preparation process is easy, raw material is easy
, preparation-obtained corrosion inhibitor belongs to high molecular material, and property is stable, environmentally protective, inhibition anticorrosion performance is excellent, simultaneously also
With excellent resistance to salt water, coastal waters, sea port dock, coastal industry and civilian reinforced concrete building can be widely applied to.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, and make features described above of the invention,
Purpose and advantage are more clear understandable, and the present invention will be further explained with reference to the examples below.Embodiment is only used for
It is bright the present invention rather than limit the scope of the invention.
Embodiment 1
Firstly the need of monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation is prepared according to the following steps
Amino acid anion salt:
Step D1: the preparation of intermediate: N- vinyl -2-methylimidazole is dissolved in the second organic solvent and is configured to quality point
Number is addition after 5% solution and the equimolar 2- bromine ethylamine hydrobromide of N- vinyl -2-methylimidazole, in 500r/min item
Agitating and heating reacts 36h under part after being warming up to 60 DEG C, is cooled to 25 DEG C of room temperatures after reaction, and filter cake is placed in by vacuum filtration
Drying for 24 hours, obtains intermediate under the conditions of 50 DEG C in drying box；
Step D2: intermediate obtained by step D1 is dissolved in after methylene chloride is configured to the solution that mass fraction is 40% and is added
With the equimolar sodium hydroxide of intermediate, it is stirred to react for 24 hours in 1500r/min, 25 DEG C, cools down after reaction under room temperature
To 25 DEG C of room temperatures, place the product in dry for 24 hours under the conditions of 50 DEG C in drying box；
Step D3: step D2 products therefrom is dissolved in after being configured to the solution that mass fraction is 35% in third organic solvent
Addition and the equimolar amino acid of step D2 products therefrom, stir 18h in 500r/min, 25 DEG C, reaction terminates under room temperature
After be cooled to 25 DEG C of room temperatures, place the product in drying box under the conditions of 50 DEG C drying can obtain monomer ion liquid 1- ethylene for 24 hours
Base -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt.
Above step D1 to D3 is in N2It is carried out under atmosphere, above-mentioned second organic solvent, third organic solvent are ethyl alcohol, first
One of alcohol and acetonitrile are a variety of.
Then, by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt with
Cross-linker divinylbenzene prepares corrosion inhibitor by copolyreaction, and steps are as follows:
Step S1: by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt
It is dissolved in the first organic solvent and is configured to the solution that mass fraction is 5%, agitating and heating is warming up to 70 DEG C under the conditions of 1000r/min
Addition accounts for divinylbenzene after stable 5min afterwards and the potassium peroxydisulfate of monomer ion liquid gross mass 0.8% is formed as initiator
Mixed solution；
Step S2: to the resulting mixed solution and dripping divinylbenzene of step S1, wherein divinylbenzene and monomer from
The mass ratio of sub- liquid is 1:1, stops obtaining reaction solution after reacting 6h；
Step S3: it is filtered by vacuum after reaction solution obtained by step S2 is cooled to 25 DEG C of room temperatures, filter cake is placed in drying box
For 24 hours, corrosion inhibitor can be obtained in the filter cake crushing after drying by drying under the conditions of 50 DEG C.
Above-mentioned steps S1 to S3 is in N2It is carried out under atmosphere.Initiator potassium persulfate can with etc. the ammonium persulfate of quality or
Ammonium persulfate and potassium peroxydisulfate mixture replace.
The preparation-obtained antirust for reinforced concrete of the present embodiment when in use, is applied directly to by the additive amount of corrosion inhibitor
Mixing is dissolved in water, while reducing water consumption when corresponding concrete is poured in the ratio of water in composition, and corrosion inhibitor adds
Dosage is calculated with 1% of cement weight required for every cubic meter of concrete construction.
Embodiment 2
Firstly the need of monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation is prepared according to the following steps
Amino acid anion salt:
Step D1: the preparation of intermediate: N- vinyl -2-methylimidazole is dissolved in the second organic solvent and is configured to quality point
Number is addition after 10% solution and the equimolar 2- bromine ethylamine hydrobromide of N- vinyl -2-methylimidazole, in 1000r/min
Under the conditions of agitating and heating be warming up to 80 DEG C after react 12h, be cooled to 25 DEG C of room temperatures after reaction, be filtered by vacuum, filter cake is set
6h is dried under the conditions of 80 DEG C in drying box, obtains intermediate；
Step D2: intermediate obtained by step D1 is dissolved in after methylene chloride is configured to the solution that mass fraction is 50% and is added
With the equimolar sodium hydroxide of intermediate, it is stirred to react 12h under room temperature in 2000r/min, 25 DEG C, cools down after reaction
To 25 DEG C of room temperatures, place the product in dry 6h in drying box under the conditions of 80 DEG C；
Step D3: step D2 products therefrom is dissolved in after being configured to the solution that mass fraction is 40% in third organic solvent
Addition and the equimolar amino acid of step D2 products therefrom, stir 6h in 1000r/min, 25 DEG C, reaction terminates under room temperature
After be cooled to 25 DEG C of room temperatures, place the product in dry 6h can obtain monomer ion liquid 1- ethylene under the conditions of 80 DEG C in drying box
Base -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt.
Above step D1 to D3 is in N2It is carried out under atmosphere, above-mentioned second organic solvent, third organic solvent are ethyl alcohol, first
One of alcohol and acetonitrile are a variety of.
Then, by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt with
Cross-linker divinylbenzene prepares corrosion inhibitor by copolyreaction, and steps are as follows:
Step S1: by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt
It is dissolved in the first organic solvent and is configured to the solution that mass fraction is 10%, agitating and heating is warming up to 85 under the conditions of 2000r/min
Addition accounts for divinylbenzene after stable 5min after DEG C and the potassium peroxydisulfate of monomer ion liquid gross mass 1% is formed as initiator
Mixed solution；
Step S2: to the resulting mixed solution and dripping divinylbenzene of step S1, wherein divinylbenzene and monomer from
The mass ratio of sub- liquid is 3:1, stops obtaining reaction solution after reacting 12h；
Step S3: it is filtered by vacuum after reaction solution obtained by step S2 is cooled to 25 DEG C of room temperatures, filter cake is placed in drying box
Corrosion inhibitor can be obtained in filter cake crushing after drying by the dry 6h under the conditions of 80 DEG C.
Above-mentioned steps S1 to S3 is in N2It is carried out under atmosphere, above-mentioned first organic solvent is in ethyl alcohol, methanol and acetonitrile
It is one or more.Initiator potassium persulfate can with etc. quality ammonium persulfate or ammonium persulfate and potassium peroxydisulfate mixture generation
It replaces.
The preparation-obtained antirust for reinforced concrete of the present embodiment when in use, is applied directly to by the additive amount of corrosion inhibitor
Mixing is dissolved in water, while reducing water consumption when corresponding concrete is poured in the ratio of water in composition, and corrosion inhibitor adds
Dosage is calculated with 3% of cement weight required for every cubic meter of concrete construction.
Embodiment 3
Firstly the need of monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation is prepared according to the following steps
Amino acid anion salt:
Step D1: the preparation of intermediate: N- vinyl -2-methylimidazole is dissolved in the second organic solvent and is configured to quality point
Number is addition after 8% solution and the equimolar 2- bromine ethylamine hydrobromide of N- vinyl -2-methylimidazole, in 800r/min item
Agitating and heating is reacted for 24 hours after being warming up to 70 DEG C under part, is cooled to 25 DEG C of room temperatures after reaction, and filter cake is placed in by vacuum filtration
12h is dried in drying box under the conditions of 65 DEG C, obtains intermediate；
Step D2: intermediate obtained by step D1 is dissolved in after methylene chloride is configured to the solution that mass fraction is 50% and is added
With the equimolar sodium hydroxide of intermediate, it is stirred to react 12h under room temperature in 1800r/min, 25 DEG C, cools down after reaction
To 25 DEG C of room temperatures, place the product in dry 12h in drying box under the conditions of 65 DEG C；
Step D3: step D2 products therefrom is dissolved in after being configured to the solution that mass fraction is 40% in third organic solvent
Addition and the equimolar amino acid of step D2 products therefrom, stir 12h in 800r/min, 25 DEG C, reaction terminates under room temperature
After be cooled to 25 DEG C of room temperatures, place the product in dry 12h can obtain monomer ion liquid 1- ethylene under the conditions of 65 DEG C in drying box
Base -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt.
Above step D1 to D3 is in N2It is carried out under atmosphere, the second organic solvent in above-mentioned steps D1 is ethyl alcohol, methanol
And one of acetonitrile or a variety of.
Then, by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt with
Cross-linker divinylbenzene prepares corrosion inhibitor by copolyreaction, and steps are as follows:
Step S1: by monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt
It is dissolved in the first organic solvent and is configured to the solution that mass fraction is 20%, agitating and heating is warming up to 75 under the conditions of 1500r/min
The potassium peroxydisulfate for accounting for divinylbenzene and monomer ion liquid gross mass 1.5% is added as initiation dosage form after stablizing 8min after DEG C
At mixed solution；
Step S2: to the resulting mixed solution and dripping divinylbenzene of step S1, wherein divinylbenzene and monomer from
The mass ratio of sub- liquid is 2:1, stops obtaining reaction solution after reacting 12h；
Step S3: it is filtered by vacuum after reaction solution obtained by step S2 is cooled to 25 DEG C of room temperatures, filter cake is placed in drying box
Corrosion inhibitor can be obtained in filter cake crushing after drying by the dry 12h under the conditions of 65 DEG C.
Above-mentioned steps S1 to S3 is in N2It is carried out under atmosphere, the first organic solvent in above-mentioned steps S1 is ethyl alcohol, methanol
And one of acetonitrile or a variety of.Initiator potassium persulfate can with etc. quality ammonium persulfate or ammonium persulfate and persulfuric acid
Potassium mixture replaces.
The preparation-obtained antirust for reinforced concrete of the present embodiment when in use, is applied directly to by the additive amount of corrosion inhibitor
Mixing is dissolved in water, while reducing water consumption when corresponding concrete is poured in the ratio of water in composition, and corrosion inhibitor adds
Dosage is calculated with 5% of cement weight required for every cubic meter of concrete construction.
The performance test of corrosion inhibitor is carried out generally according to following methods: with weight-loss method by measurement metal in corrosive medium
It is middle to impregnate the weight lost after a certain period of time, its corrosion rate is calculated, to calculate the corrosion inhibition rate of corrosion inhibitor；With electrokinetic potential
Scanning polarization method tests the corrosion electric current density of different immersion corrosion age sealing reinforcing bar electrodes in each corrosive liquid.
The preparation-obtained corrosion inhibitor of above three embodiments and blank sample, 3% sodium nitrite, 3% commercial resistance are become rusty
Agent carries out above-mentioned performance test, gained corrosion inhibition rate and corrosion electric current density result such as following table as a comparison case.
The performance test results of each embodiment of table 1 and comparative example
Can be seen that the preparation-obtained antirust for reinforced concrete of the present invention according to upper table, there is very good resistance to become rusty
Performance, reason are: on the one hand, hard base group (- NH are both contained in the molecule of the corrosion inhibitor2), and containing soft base group (-
CH3), it is a kind of both sexes alkali, since the passivation layer of rebar surface is made of the oxide of iron, belongs to hard acid, after being passivated damage layer
The base metal exposed then belongs to soft acid, according to hsab theory, hard base and hard acid coordination, soft base and soft acid coordination gained
Complex be it is stable, thus, the corrosion inhibitor can either be adsorbed in securely on the passivating film of rebar surface formed protect
Cuticula, and bulk metal surfaces can be adsorbed onto after Damage of Passive Film, play the role of repairing passivating film, meanwhile, resistance rust
Agent is the copolymer of divinylbenzene and monomer ion liquid, and skeleton is intercrossed network type, coarse micro-nano surface, only
Special meso-hole structure and single organic backbone makes it have super-hydrophobic characteristic, it is made preferably to protect rebar surface；Separately
On the one hand, the cation of corrosion inhibitor by physical absorption in rebar surface, then in molecule on imidazoles the lone pair electrons of N atom and
The interaction of the antibonding orbital of the d track of the iron atom of pi-electron and reinforcing bar on aromatic ring and the d electronics of iron atom and corrosion inhibitor
Chemisorption is formed, to preferably inhibit the corrosion of reinforcing bar.
A kind of antirust for reinforced concrete and preparation method thereof, compared with the prior art, preparation process is easy, raw material is easy
, preparation-obtained corrosion inhibitor belongs to high molecular material, and property is stable, environmentally protective, inhibition anticorrosion performance is excellent, simultaneously also
With excellent resistance to salt water, coastal waters, sea port dock, coastal industry and civilian reinforced concrete building can be widely applied to.
Above embodiment is used for illustrative purposes only, and is not limitation of the present invention, related technical field
Those of ordinary skill without departing from the spirit and scope of the present invention can be with various changes can be made and modification, therefore institute
There is equivalent technical solution also to should belong to scope of the invention.
Claims (9)
1. a kind of preparation method of antirust for reinforced concrete, comprising the following steps:
Step S1: monomer ion liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt is dissolved in
First organic solvent is configured to the solution that mass fraction is 5-20%, and agitating and heating is warming up under the conditions of 1000-2000r/min
Initiator formation mixed solution is added after stablizing 5-10min after 70-85 DEG C；
Step S2: to the resulting mixed solution and dripping divinylbenzene of step S1, stop obtaining reaction solution after reacting 6-24h；
Step S3: it is filtered by vacuum after reaction solution obtained by step S2 is cooled to 25 DEG C of room temperatures, filter cake is placed in drying box in 50-
Dry 6-24h, crushes the filter cake after drying to obtain corrosion inhibitor under the conditions of 80 DEG C.
2. a kind of preparation method of antirust for reinforced concrete according to claim 1, it is characterised in that: the step S1
To S3 in N2It is carried out under atmosphere.
3. a kind of preparation method of antirust for reinforced concrete according to claim 1, it is characterised in that: the divinyl
The mass ratio of base benzene and monomer ion liquid is 1-3:1.
4. a kind of preparation method of antirust for reinforced concrete according to claim 1, it is characterised in that: the initiator
For ammonium persulfate and/or potassium peroxydisulfate, additional amount accounts for the 0.8-1.5% of divinylbenzene and monomer ion liquid gross mass.
5. a kind of preparation method of antirust for reinforced concrete according to claim 1, it is characterised in that: described first has
Solvent is one of ethyl alcohol, methanol and acetonitrile or a variety of.
6. a kind of preparation method of antirust for reinforced concrete according to claim 1, it is characterised in that: the monomer from
Sub- liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt is prepared from the following steps:
Step D1: it the preparation of intermediate: 1- vinyl -2-methylimidazole is dissolved in the second organic solvent is configured to mass fraction and be
Addition and the equimolar 2- bromine ethylamine hydrobromide of 1- vinyl -2-methylimidazole after the solution of 5-10%, in 500-1000r/
12-36h is reacted after agitating and heating is warming up to 60-80 DEG C under the conditions of min, is cooled to 25 DEG C of room temperatures after reaction, is filtered by vacuum,
Filter cake is placed in drying box under the conditions of 50-80 DEG C dry 6-24h, obtains intermediate；
Step D2: intermediate obtained by step D1 is dissolved in after methylene chloride is configured to the solution that mass fraction is 40-60% and is added
With the equimolar sodium hydroxide of intermediate, it is stirred to react 6-24h, reaction knot under room temperature in 1500-2000r/min, 25 DEG C
25 DEG C of room temperatures are cooled to after beam, place the product in dry 6-24h in drying box under the conditions of 50-80 DEG C；
Step D3: step D2 products therefrom is dissolved in after being configured to the solution that mass fraction is 35-50% in third organic solvent
Addition and the equimolar amino acid of step D2 products therefrom, stir 6-18h in 500-1000r/min, 25 DEG C, instead under room temperature
25 DEG C of room temperatures are cooled to after answering, place the product in dry 6-24h can obtain monomer ion under the conditions of 50-80 DEG C in drying box
Liquid 1- vinyl -2- methyl -3- ethamine-glyoxaline cation amino acid anion salt.
7. a kind of preparation method of antirust for reinforced concrete according to claim 6, it is characterised in that: the step D1
To D3 in N2It is carried out under atmosphere.
8. a kind of preparation method of antirust for reinforced concrete according to claim 6, it is characterised in that: described second has
Solvent, third organic solvent are one of ethyl alcohol, methanol and acetonitrile or a variety of.
9. a kind of antirust for reinforced concrete, it is characterised in that: by a kind of any reinforced concrete of the above claim 1-8
The preparation method of native corrosion inhibitor is prepared.
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| CN201710355874.2A CN107216423B (en) | 2017-05-19 | 2017-05-19 | A kind of antirust for reinforced concrete and preparation method thereof |
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| CN102633724A (en) * | 2011-02-14 | 2012-08-15 | 同济大学 | Amino acid imidazolium ionic liquid and preparation method thereof |
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| CN103755200A (en) * | 2014-02-14 | 2014-04-30 | 辽宁科技学院 | Mixing type imidazole ion liquid concrete reinforcement corrosion inhibitor and application thereof |
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