CN107986662A - A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its application - Google Patents
A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its application Download PDFInfo
- Publication number
- CN107986662A CN107986662A CN201711222933.5A CN201711222933A CN107986662A CN 107986662 A CN107986662 A CN 107986662A CN 201711222933 A CN201711222933 A CN 201711222933A CN 107986662 A CN107986662 A CN 107986662A
- Authority
- CN
- China
- Prior art keywords
- corrosion inhibitor
- amino
- thiadiazoles
- hydrotalcite
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/006—Compounds containing, besides zinc, two ore more other elements, with the exception of oxygen or hydrogen
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to corrosion inhibitor, specifically a kind of 2 amino of hydrotalcite intercalation, 5 sulfydryl, 1,3,4 thiadiazoles corrosion inhibitor and its application.In zinc-aluminum hydrotalcite interlayer by ion exchange, 2 amino of intercalation, 5 sulfydryl, 1,3, the 4 thiadiazoles anion in a manner of hydrogen bond and Electrostatic Absorption, the compound of formation is corrosion inhibitor.Corrosion inhibitor using the present invention, can volume production, can accomplish controlled release and repair corrosion carbon steel, and there is long-term protective action, can effectively to carbon steel progress corrosion protection, have significant application value and vast market prospect.
Description
Technical field
The present invention relates to corrosion inhibitor, specifically a kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3, the resistance of 4- thiadiazoles
Rust agent and its application.
Background technology
Armored concrete is the material of main part of coastal and offshore engineering construction, under marine corrosion environment, by high concentration cl from
The steel bar corrosion that son infiltration triggers, is the primary factor for causing concrete molecule to deteriorate.The method for completely cutting off Chloride Attack is very much,
Reinforcing steel bar corrosion inhibitor is most simple and direct, economic and efficient aseptic technic.
Reinforcing steel bar corrosion inhibitor refers to add in concrete or brushes in concrete surface, can prevent or slow down the change of reinforcement corrosion
Learn material.At present reinforcing steel bar corrosion inhibitor research and application be broadly divided into two classes：I.e. doped corrosion inhibitor (DCI) and migration-type resistance rust
Agent (MCI), the former is mainly spiked into concrete, can also be used for recovery project for new construction, the latter is mainly sprayed at
Concrete outer surface, the reparation for built engineering.However, big logarithm business corrosion inhibitor is all that function is single, some even can
Ecological environment is destroyed, corrosion inhibitor long-term existence also occurs that in concrete in addition is lost in and fails.Although new reinforcing steel bar resistance rust
Agent is always the emphasis of anticorrosion work person's research, but collects efficient, permanent, selfreparing and environmentally friendly novel and multifunctional resistance rust
Agent slowly fails to come out, and in face of the strategy development requirement of national marine power and the marine environment of harshness, there is an urgent need to research and develop
Multifunctional efficient green corrosion inhibitor.
Hydrotalcite, is also double-layered hydroxides, is a kind of anionite, it is separated by hybrid metal, by anion
Positively charged hydroxide layer and hydrone composition, general formula is [M2+ 1-xM3+ x(OH)2]x+An- x/n·mH2O.Due to its point
Son, size (nanoscale) and composition are adjustable, and have ion exchanging function, therefore have very big dive in field of corrosion prevention
Power.
The content of the invention
Present invention aims at provide a kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its
Using.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitors, zinc-aluminum hydrotalcite interlayer by from
Son exchange, the amino -5- sulfydryls -1,3 of the intercalation 2- in a manner of hydrogen bond and Electrostatic Absorption, 4- thiadiazoles anion, formation it is compound
Thing is corrosion inhibitor.
Zinc-aluminum hydrotalcite [the Zn0.67Al0.33(OH)2][(NO3)0.33·mH2O] reaction equation be：
Zn(NO3)2·6H2O+2NaOH=Zn (OH)2↓+2NaNO3+6H2O (1)
Al(NO3)3·9H2O+3NaOH=Al (OH)3↓+3NaNO3+9H2O (2)
0.67Zn(OH)2+0.33Al(OH)3+mH2O+0.33NaNO3
=[Zn0.67Al0.33(OH)2][(NO3)0.33·mH2O]+0.33NaOH (3)
By the mixed solution A of zinc nitrate and aluminum nitrate, (amount of material compares Zn at room temperature：Al=2:1) it is slowly dropped to nitre
(volume ratio A in acid sodium solution B:B=1:1.5-2), and using NaOH maintain the mixed system pH of solution A and solution B 10 ±
0.5.Then the suspension of acquisition is crystallized in 65-110 DEG C of heating water bath 8-24h, obtains zinc-aluminum hydrotalcite.
A kind of preparation method of hydrotalcite intercalation 2- amino -5- sulfydryl -1,3,4- thiadiazoles corrosion inhibitors：
1) the organic corrosion inhibitor of deprotonation, by equimolar 2- amino -5- sulfydryls -1,3,4- thiadiazoles and NaOH stirrings are mixed
Close, obtain 2- amino -5- sulfydryls -1,3,4- thiadiazoles anion；
2) by the mixed solution A of zinc nitrate and aluminum nitrate, (amount of material compares Zn at room temperature：Al=2:1) it is slowly dropped to
(volume ratio A in sodium nitrate solution B:B=1:1.5-2), and using NaOH the mixed system pH of solution A and solution B is maintained 10
±0.5.Then the suspension of acquisition is crystallized in 65-110 DEG C of heating water bath 8-24h, obtains zinc-aluminum hydrotalcite (Zn-Al-LDH-
NO3)。
3) by the zinc-aluminum hydrotalcite (Zn-Al-LDH-NO of above-mentioned acquisition3) it is added to (matter in the corrosion inhibitor solution of protonation
Measure ratio, zinc-aluminum hydrotalcite：Corrosion inhibitor=1:2-3), 24-48h is continuously stirred, hydrotalcite intercalation is obtained by ion-exchange reactions
2- amino -5- sulfydryl -1,3,4- thiadiazoles corrosion inhibitors.
A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3, the application of 4- thiadiazoles corrosion inhibitors, the corrosion inhibitor is to mixed
Solidifying soil mild steel material and its reinforcing bar product carry out the application in corrosion protection, reparation.
The seawater corrosion inhibitor under concrete alkaline environment or corresponding alkaline condition to concrete mild steel material and
Its reinforcing bar product carries out the application in corrosion protection, reparation.
The concrete alkaline environment or corresponding alkaline condition refer to that pH value is 9.5-13.5 in seawater or sodium chloride medium.
Carbon steel material and its reinforcing bar product are immersed in and added in the alkaline seawater solution or medium of corrosion inhibitor, bath temperature
For 15-45 DEG C, wherein the amount of corrosion inhibitor compound is 0.5-2g/L.
The beneficial effects of the invention are as follows：
Corrosion inhibitor obtained by the present invention is green, efficient, persistently multi-functional in integral new resistance rust with selfreparing from obtaining
Agent is started with, and uses hydrotalcite (double-layered hydroxides) as carrier, and intercalation load is carried out to thiazoles corrosion inhibitor molecule, it is therefore intended that
A kind of reinforcing steel bar corrosion inhibitor for the multi-functional hydrotalcite intercalation thiadiazoles compound that Targeting delivery is carried out by ion exchange is provided,
To suppress the corrosion of concrete medium carbon steel and its bar material product in seawater or sodium chloride medium under alkaline condition；Tool
Body：
1. cost is low.The active ingredient of corrosion inhibitor of the present invention is answered for hydrotalcite with 2- amino -5- sulfydryl -1,3,4- thiadiazoles
Compound, the compound synthesis material derive from a wealth of sources, are of low cost, and industrially a large amount of productions, and preparation method is simple, yield
Height, can be produced in enormous quantities, therefore integrated application cost is cheap.
2. environment Small side effects.Between corrosion inhibitor is supported on hydrotalcite bilayer by the present invention, there is preferable Environmental compatibility,
On the one hand the loss and failure of corrosion inhibitor can be reduced, on the other hand, corrosion inhibitor active ingredient is exposed under strong light or in soil
With it is degradable in organism be innocuous substance, load will not be brought to environment, meet the trend of green corrosion inhibitor development.
3. strong applicability.Corrosion inhibitor of the present invention it is applied widely, in higher salinity, higher temperature and wider alkali
Excellent anticorrosion performance is respectively provided with the range of property pH.
4. high efficiency.This corrosion inhibitor compound yield is high, and dosage is few, can large area be added in concrete, and can have
Effect suppresses carbon steel material or its destruction of corresponding reinforcing bar product in corrosive medium.
5. self-repairability.Corrosion inhibitor of the present invention is applied in corrosive medium, can carry out Corrosion Repair to Corrosion Reinforcement,
Reinforcing bar is prevented further to corrode.
6. durability is good.Between corrosion inhibitor is supported on hydrotalcite bilayer by the present invention, have to erosion carbon dioxide (chlorine in environment
Ion) response release ability, erosion carbon dioxide in medium (chlorion) can also be captured while discharging corrosion inhibitor, when can be long
Between keep higher resistance to become rusty efficiency in alkaline environment.
Brief description of the drawings
Fig. 1 is the synthetic route of corrosion inhibitor compound provided in an embodiment of the present invention.
Embodiment
Further explanation is made to the present invention with reference to the accompanying drawings and examples.
Corrosion inhibitor is intercalation into hydrotalcite layers by the present invention, acts in corrosive medium, not only environmental response can be released
Corrosion inhibitor is put, protection metal exempts from erosion, and can also capture erosion carbon dioxide chlorion in medium by ion exchange, in addition
Release of the harmful substance to environment can also be reduced using hydrotalcite intercalation corrosion inhibitor, the loss and failure of corrosion inhibitor is reduced, reaches
To extended protection effect.
And then using hydrotalcite nano material as carrier, organic corrosion inhibitor molecule is object, nano-device load resistance rust is prepared
Agent, discharges corrosion inhibitor by ion exchange, improves corrosion inhibitor to the long-effective corrosion performance of carbon steel, possess sufficient theoretical foundation and
Technical feasibility.
The present invention is according to GB10124-88《Uniform Corrosion Method of Laboratory Immersion Test method》Carry out zero-G test,
And carry out anticorrosion performance characterization using two kinds of electrochemical methods of electrochemical alternate impedance spectrum and potentiodynamic polarization.Although three kinds of methods
Obtained resistance rust efficiency has different, and what it is mainly due to weight-loss method test is average corrosion rate, and electrochemical method is tested
Be corrosion efficiency in transient process, but the general morphologictrend of various methods is consistent, it can be seen that in different salinity, resistance rust
The compound is respectively provided with excellent anticorrosion performance under agent concentration, temperature, pH value condition.Used experimental test procedures come from text
Offer【1】With【2】：【1】W.Li,L.Hu,S.Zhang,B.Hou,Effects of two fungicides on the
Corrosion resistance of copper in 3.5%NaCl solution under various conditions
[J],Corros.Sci.2011,53:735-745 (weightless test, electrochemical impedance spectroscopy measuring resistance rust efficiency)；【2】
H.Tian,W.Li,B.Hou.Novel application of a hormone biosynthetic inhibitor for
the corrosion resistance enhancement of copper in synthetic seawater[J]
.Corros.Sci.2011,53:3435-3445 (dynamic potential polarization curve measuring resistance rust efficiency).
Embodiment 1
The preparation of hydrotalcite intercalation 2- amino -5- sulfydryl -1,3,4- thiadiazoles corrosion inhibitors.
The first step：Zinc-aluminum hydrotalcite is synthesized, reaction is as follows：
Zn(NO3)2·6H2O+2NaOH=Zn (OH)2↓+2NaNO3+6H2O(1)
Al(NO3)3·9H2O+3NaOH=Al (OH)3↓+3NaNO3+9H2O (2)
0.67Zn(OH)2+0.33Al(OH)3+mH2O+0.33NaNO3
=[Zn0.67Al0.33(OH)2][(NO3)0.33·mH2O]+0.33NaOH (3)
First, by 14.85g Zn (NO3)2·6H2O and 9.38g Al (NO3)3·9H2O is dissolved into 100mL distilled water,
Obtain mixing salt solution A；Again by 25.5g NaNO3It is dissolved into 200mL distilled water, obtains solution B；It is afterwards that 8g NaOH is molten
Solution obtains aqueous slkali C into 100mL distilled water.
Then, solution A is slowly dropped in solution B, while aqueous slkali C is added dropwise, maintain the pH=10 of mixed system ±
0.5, rear system is during which stirred strongly, and high pure nitrogen is constantly passed through into mixed system.
Then, the suspension obtained after the completion of titration is put into 65 DEG C of water-baths and handles 24h crystallizations.
Finally, product is by centrifuging (4500rpm, 10min), and is cleaned four times with distilled water, 70 DEG C of vacuum dryings
(24h) is simultaneously ground, and obtains zinc-aluminum hydrotalcite.
To avoid introducing CO3 2-, all solution are using the distilled water configuration boiled.
Second step：Synthesize zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryl -1,3,4- thiadiazoles corrosion inhibitor compounds.
It is the preparation (deprotonation) of 2- amino -5- sulfydryl -1,3,4- thiadiazoles sodium salt solutions first：By equimolar 2-
Amino -5- sulfydryls -1,3,4- thiadiazoles and NaOH are added in 100mL distilled water, maintain pH=10 ± 0.5 of solution, stirring
30min；
Secondly by zinc-aluminum hydrotalcite Zn-Al-LDH-NO3(half is in the amount of corrosion inhibitor), is added to above-mentioned 2- amino -5- mercaptos
Base -1,3, in 4- thiadiazoles sodium salt solutions, continuously stirs reaction 24h, pH value of solution maintains 10, end product centrifugation by mixed liquor
Recycling, cleaning, drying are simultaneously ground (with zinc-aluminum hydrotalcite recycling step), obtain corrosion inhibitor.
Adjusting its reaction condition in the way of above-described embodiment is recorded can obtain the corrosion inhibitor.
Embodiment 2
Corrosion inhibitor compound is obtained to above-described embodiment and is measured its resistance rust efficiency, is specially：
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibitor into
It is divided into above-described embodiment and obtains zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitors, medium 3.5%
Sodium chloride solution, dosage 1L, the effective content for adding corrosion inhibitor are 0.5g, and temperature is 25 DEG C, pH=11.5, Immersion time 60
My god.
It is respectively weightlessness 89.1% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 89.7%, dynamic potential polarization curve 90.5%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 3
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibitor into
It is divided into above-described embodiment and obtains zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitors, medium 3.5%
Sodium chloride solution, dosage 1L, the effective content for adding corrosion inhibitor are 1g, and temperature is 25 DEG C, pH=11.5, Immersion time 60
My god.
It is respectively weightlessness 91.5% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 92.3%, dynamic potential polarization curve 93.4%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 4
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibitor into
It is divided into above-described embodiment and obtains zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitors, medium 3.5%
Sodium chloride solution, dosage 1L, the effective content for adding corrosion inhibitor are 1.5g, and temperature is 25 DEG C, pH=11.5, Immersion time 60
My god.
It is respectively weightlessness 91.6% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 92.7%, dynamic potential polarization curve 93.5%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 5
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibitor into
It is divided into above-described embodiment and obtains zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitors, medium 3.5%
Sodium chloride solution, dosage 1L, the effective content for adding corrosion inhibitor are 2g, and temperature is 25 DEG C, pH=11.5, Immersion time 60
My god.
It is respectively weightlessness 92.2% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 93.1%, dynamic potential polarization curve 94.3%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 6
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 15 DEG C, pH=11.5, and Immersion time is 60 days.
It is respectively weightlessness 91.6% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 92.4%, dynamic potential polarization curve 93.3%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 7
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 35 DEG C, pH=11.5, and Immersion time is 60 days.
It is respectively weightlessness 91.8% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 92.7%, dynamic potential polarization curve 93.6%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 8
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 45 DEG C, pH=11.5, and Immersion time is 60 days.
It is respectively weightlessness 91.5% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 92.4%, dynamic potential polarization curve 93.5%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 9
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 25 DEG C, pH=9.5, and Immersion time is 60 days.
It is respectively weightlessness 90.5% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 91.3%, dynamic potential polarization curve 92.1%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 10
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 25 DEG C, pH=10.5, and Immersion time is 60 days.
It is respectively weightlessness 91.1% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 91.8%, dynamic potential polarization curve 92.5%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 11
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 25 DEG C, pH=12.5, and Immersion time is 60 days.
It is respectively weightlessness 91.9% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 93.7%, dynamic potential polarization curve 94.6%, shows compound for low, the efficient corrosion inhibitor of dosage.
Embodiment 12
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), corrosion inhibitor component is imitated
Zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 are obtained for above-described embodiment, 4- thiadiazoles corrosion inhibitors, medium is 3.5% chlorine
Change sodium solution, dosage 1L, the effective content for adding corrosion inhibitor is 1g, and temperature is 25 DEG C, pH=13.5, and Immersion time is 60 days.
It is respectively weightlessness 92.1% to obtain resistance rust efficiency by experiment test according to above-mentioned mensuration mode, electrochemistry resistance
Anti- spectrum 93.8%, dynamic potential polarization curve 94.5%, shows compound for low, the efficient corrosion inhibitor of dosage.
Using hydrotalcite nano material as carrier, the organic corrosion inhibitor of thiazoles becomes rusty the present invention for the seawater resistance of chemical load object
Agent, the application under concrete alkaline environment or corresponding alkaline condition.Corrosion inhibitor is applied in concrete environment or corresponding alkalescence
Under the conditions of, organic corrosion inhibitor ion is discharged by hydrotalcite layers ion exchange process, to the carbon in seawater or sodium chloride medium
Steel material and its reinforcing bar product carry out Corrosion Repair, while capture erosion carbon dioxide chlorion in medium.Resistance using the present invention
Become rusty agent, can volume production, can accomplish controlled release and repair corrosion carbon steel, and there is long-term protective action, can be effectively
Corrosion protection is carried out to carbon steel, there is significant application value and vast market prospect.
Claims (7)
1. a kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitors, it is characterised in that：In zinc-aluminum hydrotalcite
Interlayer is by ion exchange, the amino -5- sulfydryls -1,3 of the intercalation 2- in a manner of hydrogen bond and Electrostatic Absorption, 4- thiadiazoles anion,
The compound of formation is corrosion inhibitor.
2. zinc-aluminum hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 as described in claim 1,4- thiadiazoles corrosion inhibitors, its feature
It is：The zinc-aluminum hydrotalcite ([Zn0.67Al0.33(OH)2][(NO3)0.33·mH2O]) reaction equation be：
Zn(NO3)2·6H2O+2NaOH=Zn (OH)2↓+2NaNO3+6H2O (1)
Al(NO3)3·9H2O+3NaOH=Al (OH)3↓+3NaNO3+9H2O (2)
0.67Zn(OH)2+0.33Al(OH)3+mH2O+0.33NaNO3
=[Zn0.67Al0.33(OH)2][(NO3)0.33·mH2O]+0.33NaOH (3)
By the mixed solution A of zinc nitrate and aluminum nitrate, (amount of material compares Zn at room temperature：Al=2:1) it is slowly dropped to sodium nitrate
(volume ratio A in solution B:B=1:1.5-2), and using NaOH the mixed system pH of solution A and solution B is maintained 10 ± 0.5,
Then the suspension of acquisition is crystallized in 65-110 DEG C of heating water bath 8-24h, obtains zinc-aluminum hydrotalcite.
A kind of 3. preparation side of hydrotalcite intercalation 2- amino -5- sulfydryl -1,3,4- thiadiazoles corrosion inhibitors as described in claim 1
Method, it is characterised in that：
1) the organic corrosion inhibitor of deprotonation, by equimolar 2- amino -5- sulfydryls -1,3,4- thiadiazoles is stirred with NaOH,
Obtain 2- amino -5- sulfydryl -1,3,4- thiadiazoles anion；
2) mixed solution A of zinc nitrate and aluminum nitrate is slowly dropped in sodium nitrate solution B (volume ratio A at room temperature:B=
1:1.5-2), and using NaOH maintain the mixed system pH of solution A and solution B 10 ± 0.5, then by the suspension of acquisition in
65-110 DEG C of heating water bath 8-24h crystallization, obtains zinc-aluminum hydrotalcite (Zn-Al-LDH-NO3)；
3) by the zinc-aluminum hydrotalcite (Zn-Al-LDH-NO of above-mentioned acquisition3) be added in the corrosion inhibitor solution of protonation (mass ratio,
Zinc-aluminum hydrotalcite：Corrosion inhibitor=1:2-3), 24-48h is continuously stirred, hydrotalcite intercalation 2- ammonia is obtained by ion-exchange reactions
Base -5- sulfydryl -1,3,4- thiadiazoles corrosion inhibitors.
4. hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 described in a kind of claim 1, the application of 4- thiadiazoles corrosion inhibitors, its
It is characterized in that：Application of the corrosion inhibitor in concrete mild steel material and its reinforcing bar product are carried out corrosion protection, repaired.
5. hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 as described in claim 4, the application of 4- thiadiazoles corrosion inhibitors, it is special
Sign is：The seawater corrosion inhibitor under concrete alkaline environment or corresponding alkaline condition to concrete mild steel material and its
Reinforcing bar product carries out the application in corrosion protection, reparation.
6. hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 as described in claim 5, the application of 4- thiadiazoles corrosion inhibitors, it is special
Sign is：The concrete alkaline environment or corresponding alkaline condition refer to that pH value is 9.5-13.5 in seawater or sodium chloride medium.
7. hydrotalcite intercalation 2- amino -5- sulfydryls -1,3 as described in claim 6, the application of 4- thiadiazoles corrosion inhibitors, it is special
Sign is：Carbon steel material and its reinforcing bar product are immersed in and added in the alkaline seawater solution or medium of corrosion inhibitor, bath temperature
For 15-45 DEG C, wherein the amount of corrosion inhibitor compound is 0.5-2g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711222933.5A CN107986662A (en) | 2017-11-29 | 2017-11-29 | A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711222933.5A CN107986662A (en) | 2017-11-29 | 2017-11-29 | A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107986662A true CN107986662A (en) | 2018-05-04 |
Family
ID=62034183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711222933.5A Pending CN107986662A (en) | 2017-11-29 | 2017-11-29 | A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107986662A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920493A (en) * | 2022-06-22 | 2022-08-19 | 水利部交通运输部国家能源局南京水利科学研究院 | PH self-immune hydrotalcite rust inhibitor and preparation method and application thereof |
| CN114933322A (en) * | 2022-06-28 | 2022-08-23 | 青岛理工大学 | Calcium-aluminum type hydrotalcite of intercalation rust inhibitor and preparation method and application thereof |
| CN115058177A (en) * | 2022-06-20 | 2022-09-16 | 中国船舶重工集团公司第七二五研究所 | Stainless steel anticorrosive paint and preparation method thereof |
| CN115124270A (en) * | 2022-06-22 | 2022-09-30 | 水利部交通运输部国家能源局南京水利科学研究院 | Layered adsorption type hydrotalcite mortar rust-resistant layer and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360907A (en) * | 2013-08-08 | 2013-10-23 | 中国石油大学(北京) | Self-repairing organic coating applied to gathering pipeline and preparation method of self-repairing organic coating |
-
2017
- 2017-11-29 CN CN201711222933.5A patent/CN107986662A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360907A (en) * | 2013-08-08 | 2013-10-23 | 中国石油大学(北京) | Self-repairing organic coating applied to gathering pipeline and preparation method of self-repairing organic coating |
Non-Patent Citations (2)
| Title |
|---|
| 唐雨晴等: "共沉淀法合成锌铝类水滑石化合物的焙烧产物及其磷吸附", 《北京师范大学学报（自然科学版）》 * |
| 朱一帆等: "2-氨基-5-巯基-1,3,4-噻二唑缓蚀剂", 《第十届全国缓蚀剂学术讨论会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115058177A (en) * | 2022-06-20 | 2022-09-16 | 中国船舶重工集团公司第七二五研究所 | Stainless steel anticorrosive paint and preparation method thereof |
| CN114920493A (en) * | 2022-06-22 | 2022-08-19 | 水利部交通运输部国家能源局南京水利科学研究院 | PH self-immune hydrotalcite rust inhibitor and preparation method and application thereof |
| CN115124270A (en) * | 2022-06-22 | 2022-09-30 | 水利部交通运输部国家能源局南京水利科学研究院 | Layered adsorption type hydrotalcite mortar rust-resistant layer and preparation method and application thereof |
| CN114933322A (en) * | 2022-06-28 | 2022-08-23 | 青岛理工大学 | Calcium-aluminum type hydrotalcite of intercalation rust inhibitor and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107986662A (en) | A kind of hydrotalcite intercalation 2- amino -5- sulfydryls -1,3,4- thiadiazoles corrosion inhibitor and its application | |
| Liu et al. | Polyether copolymer as an environmentally friendly scale and corrosion inhibitor in seawater | |
| CN107988601A (en) | A kind of hydrotalcite intercalation 5- methyl isophthalic acids, 3,4,-thiadiazoles -2- sulfydryls corrosion inhibitor and its application | |
| Desai et al. | Corrosion inhibitors for carbon steel: A review | |
| CN105256318A (en) | Novel imidazoline compound corrosion inhibitor and preparation method thereof | |
| CN101747866A (en) | Coal dust depressor and preparation method thereof | |
| CN106590089A (en) | Water-based potassium silicate zinc-rich primer used for surface treatment of long-acting anti-microbial section steel structures and preparation method of water-based potassium silicate zinc-rich primer | |
| Kuznetsov | Triazoles as a class of multifunctional corrosion inhibitors. Review. Part III. 1, 2, 3-Benzotriazole and its derivatives. Aluminum alloys | |
| CN105001688A (en) | Water-borne inorganic anti-corrosive paint added with lithium stearate | |
| CN108002730A (en) | A kind of hydrotalcite intercalation 5- methyl mercapto -1,3,4,-thiadiazoles -2- sulfydryls corrosion inhibitor and its application | |
| CN105568297A (en) | Environment-friendly carbon steel pickling inhibitor and application thereof | |
| CN104531087A (en) | Superpolymer composite antifreezing solution | |
| CN105132921A (en) | Green corrosion inhibitor for inhibiting carbon steel from corrosion in seawater medium and preparation method and application of green corrosion inhibitor | |
| CN108676029A (en) | The double trifluoromethanesulfonimide ionic liquids of Bian bases triphenyl phosphonium, synthetic method and its application as metal inhibitor | |
| CN105062277A (en) | Sodium stearate-containing inorganic anticorrosive paint and preparation technology thereof | |
| Yépez et al. | Study of sour corrosion mechanism under controlled pH | |
| CN108017305A (en) | A kind of thiadiazoles corrosion inhibitor compound of active group containing cinnamic acid of hydrotalcite intercalation chlorion probe modification and its application | |
| CN108002729A (en) | A kind of compound of corrosion inhibitor containing dimercaptothiodiazole of hydrotalcite intercalation chlorion probe modification and its application | |
| JPH0133552B2 (en) | ||
| CN107986663A (en) | A kind of corrosion inhibitor compound of triazole containing schiff bases of hydrotalcite intercalation chlorion probe modification and its application | |
| CN102219431A (en) | Composite reinforcement bar rust inhibitor containing nano copper oxide | |
| CN102199014A (en) | Composite steel bar corrosion inhibitor | |
| JP2014162899A (en) | Antifreezing agent | |
| Zhang et al. | Corrosion inhibitors used in alkaline environments | |
| Vernon | The corrosion of metals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180504 |