CN114481136A - Vapor phase corrosion inhibitor based on metal organic framework material and preparation method thereof - Google Patents
Vapor phase corrosion inhibitor based on metal organic framework material and preparation method thereof Download PDFInfo
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- CN114481136A CN114481136A CN202210027061.1A CN202210027061A CN114481136A CN 114481136 A CN114481136 A CN 114481136A CN 202210027061 A CN202210027061 A CN 202210027061A CN 114481136 A CN114481136 A CN 114481136A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
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Abstract
The invention provides a vapor phase corrosion inhibitor based on a metal organic framework material, which relates to the technical field of vapor phase corrosion inhibitors and comprises the following components, 5-50 mg of the metal organic framework material; 10-120 mmol/ml of triamterene acetonitrile solution. According to the invention, the metal organic frame and the triamterene are organically combined, so that the triamterene can be completely stored in the hole of the metal organic frame, self-starting release is realized according to the change of the environment, and a protective film is formed.
Description
Technical Field
The invention relates to the technical field of vapor phase corrosion inhibitors, in particular to a vapor phase corrosion inhibitor based on a metal organic framework material and a preparation method thereof.
Background
At present, a common problem of metal products in the manufacturing, using and transporting processes is corrosion, which becomes a trawl stone in the current industrial development, and can not only cause huge economic loss, but also pollute the environment and even cause catastrophic accidents.
The corrosion inhibitor technology has good effect and great economic benefit in practical application, so the technology becomes an important anticorrosion technology gradually.
In the metal with antiseptic liquid medium, water soluble corrosion inhibitor is usually selected, and in the metal exposed to atmosphere, small molecular compound capable of volatilizing automatically is usually selected as gas phase corrosion inhibitor. The micromolecule vapor phase inhibitor can protect the internal grooves, the surfaces and even the gaps of the metal products, so the vapor phase inhibitor becomes an effective method for improving the metal corrosion prevention effect.
The research of gas phase corrosion inhibitors can be roughly divided into three types, one is a ferrous metal gas phase corrosion inhibitor, such as dicyclohexylamine nitrite and cyclohexylamine carbonate, which has good antirust capability on ferrous metals such as iron, nickel, zinc and the like, and has no corrosion inhibition capability on nonferrous metals. One is a gas phase inhibitor obtained by compounding a plurality of metal synergistic gas phase inhibitors, such as benzotriazole and a plurality of compounds with different vapor pressures. Although the compounds such as benzotriazole, dicyclohexylamine nitrite and cyclohexylamine carbonate are proved to have good corrosion inhibition performance, the compounds have the common characteristics of high toxicity, no toxicity and rapid development of low-toxicity corrosion inhibitors, and mainly comprise inorganic acid salts and organic acid salts of amine, antirust paper antirust films loaded with gas phase corrosion inhibitors and the like.
At present, a lot of reports are provided about the use of vapor phase corrosion inhibitors, but the vapor phase corrosion inhibitors have undefined use conditions and can still volatilize under a low-corrosion environment, thereby causing certain waste.
Disclosure of Invention
The invention aims to provide a vapor phase corrosion inhibitor based on a metal organic framework material, which is used for providing another vapor phase corrosion inhibitor, wherein the vapor phase corrosion inhibitor can release the corrosion inhibitor according to humidity so as to form a protective film for protection, thereby achieving the purpose of effectively and controllably adjusting and releasing the corrosion inhibitor and reducing unnecessary waste.
The invention is realized by the following technical scheme: 5-50 mg of metal organic framework material; 10-120 mmol/ml of triamterene acetonitrile solution. The triamterene acetonitrile solution is prepared by dissolving triamterene in acetonitrile solution, and acetonitrile is used as solvent.
In order to better implement the invention, further, the metal-organic framework material is selected from metal-organic framework material MOF-5.
The invention also provides a preparation method of the vapor phase corrosion inhibitor based on the metal organic framework material, which comprises the steps of mixing the metal organic framework material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
In order to better implement the invention, further, the reaction conditions are as follows: stirring for 1-7 days at 25-100 ℃ and 1000r/min, then centrifuging for 10-45 minutes at 6000 revolutions, washing for 1-5 times by using an acetonitrile solution, and drying for 6 hours in vacuum at 60-100 ℃.
In order to better implement the invention, further, the reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 6 days, centrifuging at 6000 rpm for 30 min, washing with acetonitrile solution for 3 times, and vacuum drying at 80 deg.C for 6 hr.
A vapor phase corrosion inhibitor based on metal organic framework material is prepared by the preparation method.
The invention also provides an application of the vapor phase corrosion inhibitor based on the metal organic framework material in the metal corrosion prevention direction.
The invention provides a gas phase corrosion inhibitor based on a metal organic framework material, which is prepared by mixing an organic metal framework and a triptycene acetonitrile solution, wherein the metal organic framework is selected from a metal organic framework MOF-5, the structure of the metal organic framework is a porous pipe, the triptycene can enter holes of the metal organic framework MOF-5 through stirring and centrifugation after being mixed with the triptycene, then washing and drying are carried out, and the triptycene is stored in the holes of the metal organic framework MOF-5. In the using process, if the environment is dry, the metal organic framework MOF-5 cannot be decomposed, the triamterene existing in the metal organic framework MOF-5 cannot be in contact with metal, and cannot be adsorbed to form a protective film on the metal surface, so that waste cannot be caused, when the humidity of the using environment is high, the metal organic framework MOF-5 can be decomposed, and after decomposition, the triamterene existing in the metal organic framework MOF-5 can be released and adsorbed to the metal surface to form the protective film, so that the purpose of protection is achieved.
The invention has the beneficial effects that:
according to the invention, the metal organic frame and the triamterene are organically combined, so that the triamterene can be completely stored in the hole of the metal organic frame, self-starting release is realized according to the change of the environment to form a protective film, particularly, when the environment is dry, the metal organic frame is not decomposed, so that the triamterene is not released, the possibility of release is reduced, the service life of the corrosion inhibitor is prolonged, unnecessary waste is reduced, when the humidity of the environment is higher, the metal organic frame is decomposed, and the triamterene in the metal organic frame is also released to form the protective film, so that the purpose of protection is achieved, the corrosion inhibitor can realize self-adaptive adjustment according to the change of the environment, and the utilization rate of the corrosion inhibitor is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings that are required to be used in the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a photograph of a vapor phase corrosion inhibitor based on a metal organic framework material provided by the present invention;
FIG. 2 is an AC impedance spectrum of the loaded vapor phase corrosion inhibitor provided by the present invention;
FIG. 3 is a plot of the polarization of test carbon steel provided by the present invention;
FIG. 4 is a graph of the change of the charge transfer resistance with humidity of the vapor phase corrosion inhibitor of the present invention.
Detailed Description
The technical solution of the present invention will be described below with reference to the accompanying drawings.
Example 1:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; 10mmol of triamterene acetonitrile solution and 1ml of the triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 10 min, washing with acetonitrile solution for 1 time, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 2:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; 50mmol,1ml of triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 45 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 3:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; 100mmol,1ml of triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 15 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 4:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal organic framework material; 50mmol,1ml of triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 50 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 25 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80 deg.C for 6 hr.
According to the weight portion, 1 portion of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance performance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 5:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; 150mmol of triamterene acetonitrile solution and 1ml of the triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 30 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 35 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 6:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; the solution of triamterene pteridine in acetonitrile is 50 mmol/ml.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 20 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 7:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; 50mmol,1ml of triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 30 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Example 8:
a vapor phase corrosion inhibitor based on a metal organic framework material comprises the following components;
10mg of metal-organic framework material; 50mmol,1ml of triamterene acetonitrile solution.
The metal organic framework material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
and mixing the metal organic framework material with the triamterene acetonitrile solution, and stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80 deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 40 min, washing with acetonitrile solution for 3 times, and vacuum drying at 80 deg.C for 6 hr.
According to the parts by weight, 1 part of the prepared humidity controlled-release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance of the humidity controlled-release type vapor phase corrosion inhibitor is tested in a closed container with the humidity of 50%.
Results of the experiment
As shown in FIG. 2, FIG. 2 is an alternating current impedance spectrogram of a loaded vapor phase corrosion inhibitor, and it can be seen from the chart that the capacitive arc radius of the MOF-5 loaded with the triamterene is obviously larger than that of the metal organic framework MOF-5 not loaded with the triamterene, which shows that with the increase of humidity, the metal organic framework MOF-5 is decomposed, the triamterene slowly volatilizes, and is adsorbed on the metal surface, so as to improve the corrosion resistance of the metal.
As shown in FIG. 3, FIG. 3 is a polarization curve diagram, and it can be seen that the corrosion current density is reduced by 2 orders of magnitude after the triamterene is added, which indicates that the triamterene has certain corrosion resistance.
As shown in fig. 4, it can be seen that, with the increase of humidity, some triamterene is released, and the charge transfer resistance is increased, which indicates that the triamterene can play a certain corrosion inhibition role on the metal surface.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A vapor phase corrosion inhibitor based on a metal organic framework material is characterized by comprising the following components:
5-50 mg of metal organic framework material; 10-120 mmol/ml of triamterene acetonitrile solution.
2. The metal-organic framework material-based vapor phase corrosion inhibitor according to claim 1, wherein the metal-organic framework material is selected from metal-organic framework material MOF-5.
3. The preparation method of the vapor phase corrosion inhibitor based on the metal organic framework material as claimed in claim 2, characterized in that the vapor phase corrosion inhibitor is obtained by mixing the metal organic framework material and the triamterene acetonitrile solution, stirring, centrifuging, washing, and vacuum drying.
4. The method according to claim 3, wherein the reaction conditions are: stirring for 1-7 days at 25-100 ℃ and 1000r/min, then centrifuging for 10-45 minutes at 6000 revolutions, washing for 1-5 times by using an acetonitrile solution, and drying for 6 hours in vacuum at 60-100 ℃.
5. The method according to claim 4, wherein the reaction conditions are: stirring at 80 deg.C and 1000r/min for 6 days, centrifuging at 6000 rpm for 30 min, washing with acetonitrile solution for 3 times, and vacuum drying at 80 deg.C for 6 hr.
6. A vapor phase corrosion inhibitor based on a metal organic framework material, which is characterized by being prepared by the preparation method of any one of claims 3 to 5.
7. Use of a vapor phase corrosion inhibitor based on a metal organic framework material according to claim 6 for the protection of metals from corrosion.
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